wr2 series g10 2nd · 2019. 2. 6. · hic circuit (hic: heat inter-changer) - - drawing external...

2 - 423

WR2 SERIES G10 2nd

HEAT SOURCE UNITS

HEAT SOURCE UNITSI.WR2 SERIES

1. SPECIFICATIONS........................................................................................................................................... 2 - 424

2. EXTERNAL DIMENSIONS .............................................................................................................................. 2 - 431

3. CENTER OF GRAVITY ................................................................................................................................... 2 - 433

4. ELECTRICAL WIRING DIAGRAMS ................................................................................................................ 2 - 434

5. SOUND LEVELS ............................................................................................................................................. 2 - 435

6. CAPACITY TABLES ........................................................................................................................................ 2 - 4376-1. Correction by temperature ....................................................................................................................... 2 - 4376-2. Correction by total indoor......................................................................................................................... 2 - 4456-3. Correction by refrigerant piping length..................................................................................................... 2 - 4496-4. Correction by port counts of the BC controller ......................................................................................... 2 - 4506-5. Operation temperature range .................................................................................................................. 2 - 451

7. SYSTEM DESIGN GUIDE............................................................................................................................... 2 - 4527-1. Designing of water circuit system ............................................................................................................ 2 - 4527-2. Water piping work .................................................................................................................................... 2 - 464

8. OPTIONAL PARTS.......................................................................................................................................... 2 - 4668-1. JOINT ...................................................................................................................................................... 2 - 4668-2. OUTDOOR TWINNING KIT..................................................................................................................... 2 - 4678-3. JOINT KIT "CMY-R160-J1" FOR BC CONTROLLER ............................................................................. 2 - 468

1. SPECIFICATIONS G10 2nd

HEAT SOURCE UNITS 2 - 424

WR

2

I.WR2 SERIES1. SPECIFICATIONS

Model PQRY-P200YHM-A PQRY-P250YHM-A Power source 3-phase 4-wire 380-400-415V 50/60Hz 3-phase 4-wire 380-400-415V 50/60Hz

Cooling capacity *1 kW 22.4 28.0

(Nominal) *1 kcal / h 19,300 24,100*1 BTU / h 76,400 95,500

Power input kW 3.96 5.51

Current input A 6.6-6.3-6.1 9.3-8.8-8.5EER kW / kW 5.65 5.08

Temp. range of Indoor W.B. 15.0 ~ 24.0°C(59 ~ 75°F) 15.0 ~ 24.0°C(59 ~ 75°F)

cooling Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) 10.0 ~ 45.0°C(50 ~ 113°F) Heating capacity *2 kW 25.0 31.5

(Nominal) *2 kcal / h 21,500 27,100

*2 BTU / h 85,300 107,500Power input kW 4.12 5.80

Current input A 6.9-6.6-6.3 9.7-9.3-8.9

COP kW / kW 6.06 5.43

Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) 10.0 ~ 45.0°C(50 ~ 113°F)

Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity 50 ~ 150 % of heat source unit capacity

connectable Model / Quantity P15 ~ P250 / 1 ~ 20 P15 ~ P250 / 1 ~ 25 Sound pressure level (measured in anechoic room) dB <A> 47 49

Refrigerant High pressure mm (in.) 15.88(5/8) Brazed 19.05(3/4) Brazed

piping diameter Low pressure mm (in.) 19.05(3/4) Brazed 22.2(7/8) BrazedCirculating water Water flow rate m3 / h 5.76 5.76

L / min 96 96

cfm 3.4 3.4Pressure drop kPa 17 17

Operating volume range m3 / h 4.5 ~ 7.2 4.5 ~ 7.2

Compressor Type x Quantity Inverter scroll hermetic compressor Inverter scroll hermetic compressor

Manufacture AC&R Works, MITSUBISHI ELECTRIC CORPORATION AC&R Works, MITSUBISHI ELECTRIC CORPORATION

Starting method Inverter InverterMotor output kW 4.6 6.3

Case heater kW 0.035(240 V) 0.035(240 V)

Lubricant MEL32 MEL32 External finish Acrylic painted steel plate Acrylic painted steel plate

External dimension HxWxD mm 1,160(1,100 without legs) x 880 x 550 1,160(1,100 without legs) x 880 x 550

in. 45-11/16(43-5/16 without legs) x 34-11/16 x 21-11/16 45-11/16(43-5/16 without legs) x 34-11/16 x 21-11/16

Protection devices High pressure protection High pressure sensor, High pressure switch at 4.15MPa (601 psi)

High pressure sensor, High pressure switch at 4.15MPa (601 psi)

Inverter circuit (COMP.) Over-heat protection, Over-current protection Over-heat protection, Over-current protectionCompressor Over-heat protection Over-heat protection

Refrigerant Type x original charge R410A x 5.0kg (12lbs) R410A x 5.0kg (12lbs)

Control Indoor LEV and BC controller Indoor LEV and BC controller Net weight kg (lbs) 181(400) 181(400)

Heat exchanger plate type plate type

Water volume in plate I 5.0 5.0Water pressure Max. MPa 2.0 2.0

HIC circuit (HIC: Heat Inter-Changer) - -

Drawing External KB94T146 KB94T146Wiring KE94C302 KE94C302

Standard attachment Document Installation Manual Installation Manual

Accessory Refrigerant conn. pipe Refrigerant conn. pipe Optional parts Joint: CMY-Y102SS-G2,CMY-Y102LS-G2,CMY-Y202S-G2,

CMY-R160-J1Joint: CMY-Y102SS-G2,CMY-Y102LS-G2,CMY-Y202S-G2,

CMY-R160-J1

BC controller: CMB-P104, 105, 106, 108, 1010, 1013,1016V-G1

BC controller: CMB-P104, 105, 106, 108, 1010, 1013, 1016V-G1

Main BC controller: CMB-P108,1010,1013,1016V-GA1Sub BC controller: CMB-P104,108V-GB1,CMB-P1016V-HB1

Main BC controller: CMB-P108,1010,1013,1016V-GA1Sub BC controller: CMB-P104,108V-GB1,CMB-P1016V-HB1

Remarks .Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual..Due to continuing improvement, above specifications may be subject to change without notice..The ambient temperature of the heat source unit needs to be kept below 40°C D.B..The ambient relative humidity of the heat source unit needs to be kept below 80%..The heat source Unit should not be installed at outdoor..Be sure to mount a strainer (more than 50 meshes) at the water inlet piping of the unit..Be sure to provide interlocking for the unit operation and water circuit.

Notes: Unit converter

1. Nominal cooling conditions (subject to JIS B8615-2) kcal/h =kW x 860Indoor: 27°CDB/19°CWB (81°FDB/66°FWB), Water temperature: 30°C (86°F) BTU/h =kW x 3,412

Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) cfm =m3/min x 35.31

2. Nominal heating conditions (subject to JIS B8615-2) lbs =kg/0.4536Indoor: 20°CDB (68°FDB), Water temperature: 20°C (68°F)

Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) *The specification data is

subject to rounding variation.

2 - 425


HEAT SOURCE UNITS

WR

2

Model PQRY-P300YHM-A Power source 3-phase 4-wire 380-400-415V 50/60Hz Cooling capacity *1 kW 33.5 (Nominal) *1 kcal / h 28,800

*1 BTU / h 114,300Power input kW 7.44Current input A 12.5-11.9-11.5EER kW / kW 4.50

Temp. range of Indoor W.B. 15.0 ~ 24.0°C(59 ~ 75°F) cooling Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Heating capacity *2 kW 37.5 (Nominal) *2 kcal / h 32,300

*2 BTU / h 128,000Power input kW 8.15Current input A 13.7-13.0-12.5COP kW / kW 4.60

Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 1 ~ 30 Sound pressure level (measured in anechoic room) dB <A> 50 Refrigerant High pressure mm (in.) 19.05(3/4) Brazed piping diameter Low pressure mm (in.) 22.2(7/8) BrazedCirculating water Water flow rate m3 / h 5.76

L / min 96cfm 3.4

Pressure drop kPa 17Operating volume range m3 / h 4.5 ~ 7.2

Compressor Type x Quantity Inverter scroll hermetic compressorManufacture AC&R Works, MITSUBISHI ELECTRIC CORPORATIONStarting method InverterMotor output kW 7.4Case heater kW 0.035(240 V)Lubricant MEL32

External finish Acrylic painted steel plate External dimension HxWxD mm 1,160(1,100 without legs) x 880 x 550

in. 45-11/16(43-5/16 without legs) x 34-11/16 x 21-11/16 Protection devices High pressure protection High pressure sensor, High pressure switch at 4.15MPa (601 psi)

Inverter circuit (COMP.) Over-heat protection, Over-current protectionCompressor Over-heat protection

Refrigerant Type x original charge R410A x 5.0kg (12lbs)Control Indoor LEV and BC controller

Net weight kg (lbs) 181(400) Heat exchanger plate type

Water volume in plate I 5.0Water pressure Max. MPa 2.0

HIC circuit (HIC: Heat Inter-Changer) - Drawing External KB94T146

Wiring KE94C302 Standard attachment Document Installation Manual

Accessory Refrigerant conn. pipe Optional parts Joint: CMY-Y102SS-G2,CMY-Y102LS-G2,CMY-Y202S-G2,CMY-R160-J1

BC controller: CMB-P104, 105, 106, 108, 1010, 1013, 1016V-G1Main BC controller: CMB-P108,1010,1013,1016V-GA1

Sub BC controller: CMB-P104,108V-GB1,CMB-P1016V-HB1 Remarks .Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual.

.Due to continuing improvement, above specifications may be subject to change without notice..The ambient temperature of the heat source unit needs to be kept below 40°C D.B..The ambient relative humidity of the heat source unit needs to be kept below 80%..The heat source Unit should not be installed at outdoor..Be sure to mount a strainer (more than 50 meshes) at the water inlet piping of the unit..Be sure to provide interlocking for the unit operation and water circuit.


1. Nominal cooling conditions (subject to JIS B8615-2) kcal/h =kW x 860

Indoor: 27°CDB/19°CWB (81°FDB/66°FWB), Water temperature: 30°C (86°F) BTU/h =kW x 3,412Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) cfm =m3/min x 35.31

2. Nominal heating conditions (subject to JIS B8615-2) lbs =kg/0.4536

Indoor: 20°CDB (68°FDB), Water temperature: 20°C (68°F)Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) *The specification data is




WR

2

Model PQRY-P400YSHM-A Power source 3-phase 4-wire 380-400-415V 50/60Hz Cooling capacity *1 kW 45.0 (Nominal) *1 kcal / h 38,700




Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 1 ~ 40 Sound pressure level (measured in anechoic room) dB <A> 50 Refrigerant High pressure mm (in.) 22.2(7/8) Brazed piping diameter Low pressure mm (in.) 28.58(1-1/8) Brazed Set Model Model PQRY-P200YHM-A PQRY-P200YHM-ACirculating water Water flow rate m3 / h 5.76 + 5.76

L / min 96 + 96cfm 3.4 + 3.4

Pressure drop kPa 17 17Operating volume range m3 / h 4.5 + 4.5 ~ 7.2 + 7.2

Compressor Type x Quantity Inverter scroll hermetic compressor Inverter scroll hermetic compressorManufacture AC&R Works, MITSUBISHI ELECTRIC CORPORATION AC&R Works, MITSUBISHI ELECTRIC CORPORATIONStarting method Inverter InverterMotor output kW 4.6 4.6Case heater kW 0.035(240 V) 0.035(240 V)Lubricant MEL32 MEL32

External finish Acrylic painted steel plate Acrylic painted steel plate External dimension HxWxD mm 1,160(1,100 without legs) x 880 x 550 1,160(1,100 without legs) x 880 x 550





Refrigerant Type x original charge R410A x 5.0kg (12lbs) R410A x 5.0kg (12lbs)Control Indoor LEV and BC controller

Net weight kg (lbs) 181(400) 181(400) Heat exchanger plate type plate type


HIC circuit (HIC: Heat Inter-Changer) - - Pipe between unit and High pressure mm (in.) 19.05(3/4) Brazed 19.05(3/4) Brazed distributor Low pressure mm (in.) - 22.2(7/8) Brazed Drawing External KB94T147

Wiring KE94C302 KE94C302 Standard attachment Document Installation Manual

Accessory Refrigerant conn. pipe Optional parts Heat Source Twinning kit: CMY-Q100VBK

Joint: CMY-Y102SS-G2,CMY-Y102LS-G2,CMY-Y202S-G2,CMY-R160-J1Main BC controller: CMB-P108,1010,1013,1016V-GA1


.Due to continuing improvement, above specifications may be subject to change without notice..The ambient temperature of the heat source unit needs to be kept below 40°C D.B..The ambient relative humidity of the heat source unit needs to be kept below 80%..The heat source Unit should not be installed at outdoor..Be sure to mount a strainer (more than 50 meshes) at the water inlet piping of the unit..Be sure to provide interlocking for the unit operation and water circuit..The heat source twinning kit (low pressure) should be connected to the low pressure side of the heat source unit.If the connected units are of different capacities, the heat source twinning kit (low pressure) should be installed in the unit with the largest capacity.







2 - 427


HEAT SOURCE UNITS

WR

2





Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 1 ~ 45 Sound pressure level (measured in anechoic room) dB <A> 51 Refrigerant High pressure mm (in.) 22.2(7/8) Brazed piping diameter Low pressure mm (in.) 28.58(1-1/8) Brazed Set Model Model PQRY-P250YHM-A PQRY-P200YHM-ACirculating water Water flow rate m3 / h 5.76 + 5.76

L / min 96 + 96cfm 3.4 + 3.4

























WR

2





Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 1 ~ 50 (Connectable branch pipe number is max. 48.) Sound pressure level (measured in anechoic room) dB <A> 52 Refrigerant High pressure mm (in.) 22.2(7/8) Brazed piping diameter Low pressure mm (in.) 28.58(1-1/8) Brazed Set Model Model PQRY-P250YHM-A PQRY-P250YHM-ACirculating water Water flow rate m3 / h 5.76 + 5.76

L / min 96 + 96cfm 3.4 + 3.4























2 - 429


HEAT SOURCE UNITS

WR

2





Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 2 ~ 50 (Connectable branch pipe number is max. 48.) Sound pressure level (measured in anechoic room) dB <A> 52.5 Refrigerant High pressure mm (in.) 28.58(1-1/8) Brazed piping diameter Low pressure mm (in.) 28.58(1-1/8) Brazed Set Model Model PQRY-P300YHM-A PQRY-P250YHM-ACirculating water Water flow rate m3 / h 5.76 + 5.76

L / min 96 + 96cfm 3.4 + 3.4
















.Due to continuing improvement, above specifications may be subject to change without notice .The ambient temperature of the heat source unit needs to be kept below 40°C D.B. .The ambient relative humidity of the heat source unit needs to be kept below 80%. .The heat source Unit should not be installed at outdoor. .Be sure to mount a strainer (more than 50 meshes) at the water inlet piping of the unit. .Be sure to provide interlocking for the unit operation and water circuit. .The heat source twinning kit (low pressure) should be connected to the low pressure side of the heat source unit.If the connected units are of different capacities, the heat source twinning kit (low pressure) should be installed in the unit with the largest capacity.









WR

2





Temp. range of Indoor D.B. 15.0 ~ 27.0°C(59 ~ 81°F) heating Circulating water °C 10.0 ~ 45.0°C(50 ~ 113°F) Indoor unit Total capacity 50 ~ 150 % of heat source unit capacity connectable Model / Quantity P15 ~ P250 / 2 ~ 50 (Connectable branch pipe number is max. 48.) Sound pressure level (measured in anechoic room) dB <A> 53 Refrigerant High pressure mm (in.) 28.58(1-1/8) Brazed piping diameter Low pressure mm (in.) 28.58(1-1/8) Brazed Set Model Model PQRY-P300YHM-A PQRY-P300YHM-ACirculating water Water flow rate m3 / h 5.76 + 5.76

L / min 96 + 96cfm 3.4 + 3.4















Sub BC controller: CMB-P104,108V-GB1,CMB-P1016V-HB1

Remarks .Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual. .Due to continuing improvement, above specifications may be subject to change without notice. .The ambient temperature of the heat source unit needs to be kept below 40°C D.B. .The ambient relative humidity of the heat source unit needs to be kept below 80%. .The heat source Unit should not be installed at outdoor. .Be sure to mount a strainer (more than 50 meshes) at the water inlet piping of the unit. .Be sure to provide interlocking for the unit operation and water circuit. .The heat source twinning kit (low pressure) should be connected to the low pressure side of the heat source unit.If the connected units are of different capacities, he heat source twinning kit (low pressure) should be installed in the unit with the largest capacity.

Notes: Unit converter 1. Nominal cooling conditions (subject to JIS B8615-2) kcal/h =kW x 860

Indoor: 27°CDB/19°CWB (81°FDB/66°FWB), Water temperature: 30°C (86°F) BTU/h =kW x 3,412

Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) cfm =m3/min x 35.31 2. Nominal heating conditions (subject to JIS B8615-2) lbs =kg/0.4536

Indoor: 20°CDB (68°FDB), Water temperature: 20°C (68°F)

Pipe length: 7.5m (24-9/16ft.), Level difference: 0m (0ft.) *The specification data issubject to rounding variation.

2 - 431

2. EXTERNAL DIMENSIONS G10 2nd

HEAT SOURCE UNITS

WR

2

2. EXTERNAL DIMENSIONS

Ser

vice

spa

ce(fr

ont s

ide)

Servi

ce sp

ace

(fron

t side

)

Top

view

550

6060

20

74

1160(60)

The

spac

e fo

rco

ntro

l box

repl

acem

ent

450

600

170

350

725

600450

170

1100550 (530)

(102

)(5

3)

506 (503~509)

470 (467~473)

834

720

1100

141213240

2 x

2-14

x 2

0 O

val h

ole

140

75

608

563

584

83 58

121226234

18

78 168

433 54

8

(550)2222

4040

550

880

2 x

2-14

x 2

0 O

val h

ole

(Inst

alla

tion

supp

ort h

ole)

(880

)

8080 23

23

Con

trol b

ox

Ser

vice

pane

l

(Inst

alla

tion

supp

ort h

ole

pitc

h) (M

ount

ing

pitc

h)

(Installation support hole pitch)

(Mounting pitch)

88

7654

3 2

Refrig

eran

t ser

vice

valve

<Lo

w pr

essu

re>

Refrig

eran

t ser

vice

valve

<Hi

gh pr

essu

re>

1

(fron

t and

bac

k, 2

poi

nts)

Not

e 8*

Det

acha

ble

leg

880

ø45

Kno

ckou

t hol

e

ø34

Kno

ckou

t hol

eø5

2 or ø

27 K

nock

out h

ole

For p

ipes

For w

ires

For t

rans

miss

ion ca

bles

Fron

t thr

ough

hol

e

Fron

t thr

ough

hol

eFr

ont t

hrou

gh h

ole

Fron

t thr

ough

hol

e

140

x 77

Knoc

kout

hole

ø65 o

r ø40

Kno

ckou

t hole

(Uses

when

twinn

ing kit

(optio

nal

parts

) is m

ounte

d.)

Fron

t thr

ough

hol

e

ø22.

2 Br

azed

ø19.

05 B

raze

d

ø19.

05 B

raze

dø1

5.88

Bra

zed

Low

pre

ssur

eH

igh

pres

sure

Con

nect

ion

spec

ifica

tions

for

the

refri

gera

nt s

ervi

ce v

alve

PQ

RY-

P30

0YH

M-A

PQ

RY-

P25

0YH

M-A

PQ

RY-

P20

0YH

M-A

Mod

el

Con

nect

ing

pipe

spe

cific

atio

ns

*2 *1

*2 *2

*1.E

xpan

d th

e fie

ld p

ipes

and

con

nect

dire

ctly

to th

e va

lve.

*2.C

onne

ct b

y us

ing

the

conn

ectin

g pi

pes

that

are

sup

plie

d.

Fig.

BFi

g. A

Wat

er p

ipe

Dra

in p

ipe

inle

tou

tlet

Rc1

-1/2

Scr

ewR

c1-1

/2 S

crew

Rc3

/4 S

crew

<Acc

esso

ries>

·Ref

riger

ant (

high

pre

ssur

e) c

onn.

pip

e ···

···1

pc.

(P20

0 ; P

acka

ged

in th

e ac

cess

ory

kit)

·Ref

riger

ant (

low

pre

ssur

e) c

onn.

pip

e ···

··1 p

c.(P

200/

P25

0 ; P

acka

ged

in th

e ac

cess

ory

kit)

Not

e 1.

Clo

se a

hol

e of

the

wat

er p

ipin

g, th

e re

frige

rant

pip

ing,

th

e po

wer

sup

ply,

and

the

cont

rol w

iring

and

unu

sed

knoc

kout

h

oles

with

the

putty

etc

. so

as n

ot to

infil

trate

rain

wat

er

etc

. (fie

ld e

rect

ion

wor

k)N

ote

2. A

t the

tim

e of

pro

duct

shi

pmen

t, th

e fro

nt s

ide

pipi

ng

spe

cific

atio

n se

rves

as

the

loca

l dra

inag

e co

nnec

tion.

W

hen

conn

ectin

g on

the

rear

sid

e, p

leas

e re

mov

e th

e

rear

sid

e pl

ug s

ealin

g co

rks,

and

atta

ch a

fron

t sid

e.

Ens

ure

ther

e is

no

leak

afte

r the

atta

chm

ent h

as b

een

fitte

d.N

ote

3. T

ake

notic

e of

ser

vice

spa

ce a

s Fi

g. A

. (In

cas

e of

sin

gle

in

stal

latio

n, 6

00m

m o

r mor

e of

bac

k sp

ace

as fr

ont s

pace

m

akes

eas

ier a

cces

s w

hen

serv

icin

g th

e un

it fro

m re

ar s

ide)

Not

e 4.

If w

ater

pip

es o

r ref

riger

ant p

ipes

stre

tch

upw

ard,

re

quire

d sp

ace

for s

ervi

ce a

nd m

aint

enan

ce d

ue to

repl

acem

ent o

f con

trol b

ox is

sho

wn

in F

ig. B

.N

ote

5. E

nviro

nmen

tal c

ondi

tion

for i

nsta

llatio

n; -2

0~40

°C (D

B)

a

s in

door

inst

alla

tion.

Not

e 6.

In c

ase

the

tem

pera

ture

aro

und

the

heat

sou

rce

unit

has

p

ossi

bilit

y to

dro

p un

der 0

°C, b

e ca

refu

l for

the

follo

win

g

poi

nt to

pre

vent

the

pipe

bur

st b

y th

e w

ater

pip

e fre

eze-

up.

·

Circ

ulat

e th

e w

ater

all

the

time

even

if th

e he

at s

ourc

e

un

it is

not

in o

pera

tion.

·

Dra

in th

e w

ater

from

insi

de o

f the

hea

t sou

rce

unit

whe

n

th

e he

at s

ourc

e un

it w

ill n

ot o

pera

te fo

r a lo

ng te

rm.

Not

e 7.

Ens

ure

that

the

drai

n pi

ping

is d

ownw

ard

with

a p

itch

of

m

ore

than

1/1

00.

Not

e 8.

The

det

acha

ble

leg

can

be re

mov

ed a

t site

.N

ote

9. A

t bra

zing

of p

ipes

, wra

p th

e re

frige

rant

ser

vice

val

ve

w

ith w

et c

loth

and

kee

p th

e te

mpe

ratu

re o

f

refri

gera

nt s

ervi

ce v

alve

und

er 1

20°C

.

Spe

cific

atio

nsU

sage

NO

.

PQRY-P200, 250, 300YHM-AUnit : mm

2. EXTERNAL DIMENSIONS G10 2nd


WR

2

1100

550

1780

880

880

20

ce

d

To B

C c

ontro

ller

To B

C c

ontro

ller

ba

Twin

ning

pip

e (H

igh

pres

sure

)<o

ptio

nal p

arts

>

Twin

ning

pip

e(L

ow p

ress

ure)

<opt

iona

l par

ts>

Hig

hpr

essu

reLo

wpr

essu

rec

or e

d

P25

0P

200

P30

0

Uni

t m

odel

Twin

ning

pip

e ~

Hea

t sou

rce

unit

(fron

t and

bac

k, 2

poi

nts)

Det

acha

ble

leg

CM

Y-Q

100V

BK

PQRY

-P60

0YSH

M-A

PQRY

-P30

0YHM

-APQ

RY-P

300Y

HM-A

Not

e 1.

Con

nect

the

pipe

s as

sho

wn

in th

e fig

ure

abov

e. R

efer

to th

e ta

ble

belo

w fo

r the

pip

e si

ze.

2.

The

det

acha

ble

leg

can

be re

mov

ed a

t site

.

3. T

win

ning

pip

e (H

igh

pres

sure

) sho

uld

not b

e til

ted

mor

e th

an 1

5 de

gree

s fro

m th

e gr

ound

.

4. S

ee th

e In

stal

latio

n M

anua

l for

the

deta

ils o

f Tw

inni

ng p

ipe

inst

alla

tion.

PQRY

-P25

0YHM

-APQ

RY-P

250Y

HM-A

PQRY

-P50

0YSH

M-A

Low

press

ure

Twin

ning

pip

e co

nnec

tion

size

Heat

Sou

rce

unit

1Co

mpo

nent

unit

nam

e

Pac

kage

uni

t nam

e

BC

con

trolle

r ~Tw

inni

ng p

ipe

a b

PQRY

-P40

0YSH

M-A

PQRY

-P20

0YHM

-APQ

RY-P

200Y

HM-A

High

pres

sure

Twin

ning

pip

e K

it (o

ptio

nal p

arts

)He

at S

ourc

e un

it 2

PQRY

-P45

0YSH

M-A

PQRY

-P25

0YHM

-APQ

RY-P

200Y

HM-A

ø19.

05ø2

2.2

PQRY

-P55

0YSH

M-A

PQRY

-P30

0YHM

-APQ

RY-P

250Y

HM-A

116060

ø28.

58ø2

2.2

ø28.

58

Hea

t Sou

rce

unit

2H

eat S

ourc

e un

it 1

PQRY-P400,450,500,550,600YSHM-AUnit : mm

2 - 433

3. CENTER OF GRAVITY G10 2nd

HEAT SOURCE UNITS

WR

2

3. CENTER OF GRAVITY

PQRY-P200,250,300YHM-A

Model X Y Z423(16-11/16) 253(10)423(16-11/16) 253(10)

524(20-11/16)524(20-11/16)

PQRY-P200YHM-A

423(16-11/16) 253(10) 524(20-11/16)PQRY-P300YHM-APQRY-P250YHM-A

Unit : mm[in.]

1100

(43-

5/16

)60

(2-6

/16)

550(21-11/16)880(34-11/16)

506(19-15/16)

YX

Z

1160

(45-

11/1

6)

80(3-3/16)

720(28-6/16)

4. ELECTRICAL WIRING DIAGRAMS G10 2nd


WR

2

4. ELECTRICAL WIRING DIAGRAMS

~

CNAC

4

31

CN83

CNOU

T2 43

21

65

CNPW

42

1

75

CN51

0ye

llow

CN50

9blu

e3

CNOU

T1ye

llow

blue

yellow

red

orange

41

1 2 3 4 5 6

6 5 4 3 2 1

CNLV

ELE

VINV

tTH

812

CN99

2ye

llow

12

4

blue

CN63

PW

MF1

SV4d

156X1

2156

SV4b

SV7b

SV7a

3

DCL

t

M1M2

SV1a

Z3

21

-+

C5

SC-L1

SC-L2

SC-W

1Z5

R1R2R3

C3 C2F3 F2 F1Z1

Z2

R5D1

R4 R6C1

7

Diod

eBr

idge

C7C8C9C10

C4

C1

C6

TB1

L

F4 AC25

0V6.3

A T black

white

red

31 CN3

green

TB24

TB23

TB22

TB21

CN1B

41

31

CN1A

UU

U

F1,F2

,F3AC

250V

6.3A T

UZ4

DSA

CN2

6 5 3 1

UZNR0

1

U

+

31

CN5

red3

CN4

blue

1

C100

R1R5

black

red2 4

31

72C bla

ckred

SC-P

1SC

-P2

4CN

1 1

CN6

21CN

412

CN2

157 1CN

TYP

black

C1 RSH1

t THHS

FT-P

FT-N

P N

++++

++++

R34

C30

C32

C34

C36

R30

R32

C31

C33

C35

C37

R31

R33

black

white

redR3

5

CT3

SC-L3

IGBT

SC-U

SC-V

CT12

CT22

redwh

itebla

ck

black

white

red

UV

W

TP2

TP1

TB7

SM2

M1TB3

13

CN04

redCN

102

4321

CNS2

yello

w

2154

32CN

ITred

1

63H1

P

3 1CN

TYP2

black

Z24

3 2 1

Z25

CNTY

P5gre

en

CNTY

P4gre

en4 2 1

CN21

3red CN

990

2 1

TH7

TH5

t t

21 363

LS

63HS

121 3

THIN

V

tTH

4

3 2 1CN

202

red CN20

123 1

CN21

5bla

ck2 1

CN21

121

red CNIT

yello

wCN

S25

12

34

14

14

CN41

CN40

CN10

2 43

21

CN3D 1

23

blue

CN3N 1

23

yello

w C

N3K 1

2CN

ACred

21

3

F01

AC25

0V3.1

5A T

6 3 1

SV9

X09

CN50

8bla

ck

SV4a

X08

X07

1356

CN50

7red

6 5 3 1

CN50

6

X13

X05

3 121

S4a

CN50

4gre

enX0

4

X03

CH11

3 1CN

503

blue

2 1CN

502

X02

12

CNAC

2bla

ck

65 72C

12CN

72red

31

CNDC

pink

12CN

T01

13

1221

CN80

1ye

llow

CNT0

2CN

4

CN2

7 5 1

SW1ON

OFF 1 10

SW2ON

OFF 1 10

SW3ON

OFF 1 10

SW4ON

OFF 1 10

ONOF

F 1 10SW

5

543

12V

1CN

51SWU2

SWU1

10's

digit

1's digit

<Sym

bol e

xpla

natio

n>

*1.

Sing

le-d

otte

d lin

es in

dica

te w

iring

no

t sup

plie

d w

ith th

e un

it.*2

. D

ot-d

ash

lines

indi

cate

the

cont

rol

bo

x bo

unda

ries.

*3.

Ref

er to

the

Dat

a bo

ok fo

r con

nect

ing

in

put/o

utpu

t sig

nal c

onne

ctor

s.*4

. D

aisy

-cha

in te

rmin

als

(TB3

) on

the

he

at s

ourc

e un

its in

the

sam

e

refri

gera

nt s

yste

m to

geth

er.

*5.

Fast

on te

rmin

als

have

a lo

ckin

g

func

tion.

Mak

e su

re th

e te

rmin

als

ar

e se

cure

ly lo

cked

in p

lace

afte

r

inse

rtion

. Pre

ss th

e ta

b on

the

te

rmin

als

to re

mov

ed th

em.

*6.

Con

trol b

ox h

ouse

s hi

gh-v

olta

ge p

arts

.

Befo

re in

spec

ting

the

insi

de o

f the

co

ntro

l box

, tur

n of

f the

pow

er, k

eep

th

e un

it of

f for

at l

east

10

min

utes

,

and

conf

irm th

at th

e vo

ltage

bet

wee

n

FT-P

and

FT-

N o

n IN

V Bo

ard

has

drop

ped

to

20V

DC

or l

ess.

*7.

Ref

er to

the

Dat

a bo

ok fo

r wiri

ng

te

rmin

al b

lock

for P

ump

Inte

rlock

(TB8

).

Out

let t

emp.

det

ect o

f hea

t ex

chan

ger f

or in

verte

rTH

INV

Wat

er o

utle

t tem

pera

ture

TH8

Hea

t exc

hang

er c

apac

ity c

ontro

lSV

7a, b

Hea

t exc

hang

er c

apac

ity c

ontro

lSV

4a, b

, d

Hea

t exc

hang

er fo

r inv

erte

rLE

VIN

V

For o

peni

ng/c

losi

ng th

e by

pass

circ

uit u

nder

the

O/S

Fan

mot

or (R

adia

tor p

anel

)M

F1SV

1a

For o

peni

ng/c

losi

ng th

e by

pass

circ

uit

Sole

noid

valv

e

Z24,

25

Ther

mis

tor

Ope

ratio

n O

N s

igna

l, Pu

mp

Inte

rlock

Dis

char

ge p

ipe

tem

pera

ture

ACC

inle

t pip

e te

mpe

ratu

reW

ater

inle

t tem

pera

ture

IGBT

tem

pera

ture

Func

tion

setti

ng c

onne

ctor

THH

S

TH7

TH5

TH4

TB8

Pow

er s

uppl

y

Expl

anat

ion

Indo

or/H

eat s

ourc

e tra

nsm

issi

onca

ble

Cen

tral c

ontro

l tra

nsm

issi

onca

ble

Term

inal

bloc

k

TB7

TB3

TB1Sy

mbo

l

DC

reac

tor

DC

LLi

near

expa

nsio

nva

lve

Sole

noid

valv

e

CT1

2, 2

2, 3

CH

11C

rank

case

hea

ter (

for h

eatin

g th

e co

mpr

esso

r)C

urre

nt s

enso

r (AC

)M

agne

tic re

lay

(inve

rter m

ain

circ

uit)

72C

Low

pre

ssur

eH

igh

pres

sure

Hig

h pr

essu

re p

rote

ctio

n fo

r the

heat

sou

rce

unit

Pres

sure

switc

hPr

essu

rese

nsor

63LS

63H

1Sym

bol

Expl

anat

ion

4-w

ay v

alve

21S4

aSV

9

63H

S1

RELA

Y Bo

ard

Noise

Filte

r

INV

Boar

d

M-N

ET B

oard

Cont

rol B

oard

*7

*5

*6

*4OFF

ON

*3

LED1

Unit a

ddre

ssse

tting

LED1

Disp

layse

tting

Func

tion

settin

g

Comp

ress

or O

N/OF

F ou

tput

Erro

r dete

ction

outpu

t

TB7 P

ower

selec

ting

conn

ector

LED3

:Lit w

hen p

ower

ed

LED2

:CPU

in op

erati

on

CPU

pow

ersu

pply

circ

uit

Pow

er fa

ilure

dete

ctio

n ci

rcui

t

*3

M-N

ET p

ower

supp

ly c

ircui

t

Cen

tral c

ontro

ltra

nsm

issi

onca

ble

Indo

or/

Hea

t sou

rce

trans

mis

sion

cabl

e

LED

1:Po

wer

sup

ply

to In

door

/Hea

t sou

rce

trans

mis

sion

line

M

° °° ° °

M

Pum

p In

terlo

ckO

pera

tion

ON

sig

nal

M

otor

(Com

pres

sor)

MS 3~

1TB

82

34

°

LED

1 : N

orm

al o

pera

tion(

lit)

/ E

rror(b

link)

L3L2

L1

NL3

L2L1

NL3

L2L1

Powe

r Sou

rce

3N~

50/6

0Hz

380/

400/

415V

N

PQRY-P200, 250, 300YHM-A

2 - 435

5. SOUND LEVELS G10 2nd

HEAT SOURCE UNITS

WR

2

5. SOUND LEVELS

1m

1m

Measurementlocation

Measurement conditionPQRY-P200,250,300YHM-A

63 125 250 500 1k 2k 4k 8k dB(A)Standard 50/60Hz 65.0 55.5 49.0 44.0 42.5 39.5 43.5 36.5 50.0Low noise mode 50/60Hz 60.5 53.0 47.5 43.0 38.0 37.0 40.5 28.5 47.0When Low noise mode is set,the A/C system's capacity is limited. The system could return to normal operationfrom Low noise mode automatically in the case that the operation condition is severe.

10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70

Octave band central frequency (Hz)

Oct

ave

band

sou

nd le

vel (

dB)

Approximate minimumaudible limit oncontinuous noise

Stand 50/60HzLow 50/60Hz

Sound level of PQRY-P300YHM-A


10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)





10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)




5. SOUND LEVELS G10 2nd


WR

2

1m

1m

Measurementlocation

Measurement conditionPQRY-P400,450,500,550,600YSHM-A


10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)



Sound level of PQRY-P500YSHM-A


10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)





10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)





10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)





10

20

30

40

50

60

70

80

90

63 125 250 500 1k 2k 4k 8k

NC-40

NC-30

NC-20

NC-60

NC-50

NC-70


Oct

ave

band

sou

nd le

vel (

dB)




2 - 437

6. CAPACITY TABLES G10 2nd

HEAT SOURCE UNITS

WR

2

6. CAPACITY TABLES6-1. Correction by temperatureCITY MULTI could have various capacities at different designing temperatures. Using the nominal cooling/heating capacity values and the ratios below, the capacity can be found for various temperatures.

Inlet-water temp. [°C]

Rat

io

Rat

ioR

atio

Intake air temp. (Room temp.) [°CWB] Water-volume [m3/h]

Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]

Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]


Rat

io

Rat

io

Water-volume [m3/h]

Rat

io

Intake air temp. (Room temp.) [°CDB]

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

Inlet-water temp. Water volume

Intake air temp.


Intake air temp.

Water-pressure drop

Water-pressure drop

NominalCoolingCapacityInput

kW 22.476,400

3.92BTU/hkW

PQHY-P200YHM-A22.4

76,4003.96

PQRY-P200YHM-A

NominalHeatingCapacityInput

kW 25.085,300

4.12BTU/hkW

PQHY-P200YHM-A25.0

85,3004.12

PQRY-P200YHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26



WR

2


Rat

io

Rat

ioR

atio


Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]

Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]


Rat

io

Rat

io

Water-volume [m3/h]

Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.

Water-pressure drop

Water-pressure drop


kW 28.095,500

5.45BTU/hkW

PQHY-P250YHM-A28.0

95,5005.51

PQRY-P250YHM-A


kW 31.5107,500

5.80BTU/hkW

PQHY-P250YHM-A31.5

107,5005.80

PQRY-P250YHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26

2 - 439


HEAT SOURCE UNITS

WR

2


Rat

io

Rat

ioR

atio


Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]

Water-volume [m3/h]

Wat

er-p

ress

ure

drop

[kPa

]


Rat

io

Rat

io

Water-volume [m3/h]

Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.

Water-pressure drop

Water-pressure drop


kW 33.5114,300

7.36BTU/hkW

PQHY-P300YHM-A33.5

114,3007.44

PQRY-P300YHM-A


kW 37.5128,000

8.15BTU/hkW

PQHY-P300YHM-A37.5

128,0008.15

PQRY-P300YHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26



WR

2


Rat

io

Rat

ioR

atio

Intake air temp. (Room temp.) [°CWB] Water-volume [m3/h (/unit)]

Water-volume [m3/h (/unit)]

Wat

er-p

ress

ure

drop

[kPa

]


Wat

er-p

ress

ure

drop

[kPa

]

*The drawing indicates characteristic per unit.



Rat

io

Rat

io


Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

Inlet-water temp. Water volume*

Intake air temp.


Intake air temp.

Water-pressure drop*



kW 45.0153,500

8.25BTU/hkW

PQHY-P400YSHM-A45.0

153,5008.32

PQRY-P400YSHM-A


kW 50.0170,600

8.65BTU/hkW

PQHY-P400YSHM-A50.0

170,6008.65

PQRY-P400YSHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26

2 - 441


HEAT SOURCE UNITS

WR

2


Rat

io

Rat

ioR

atio



Wat

er-p

ress

ure

drop

[kPa

]


Wat

er-p

ress

ure

drop

[kPa

]




Rat

io

Rat

io


Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.




kW 50.0170,600

9.84BTU/hkW

PQHY-P450YSHM-A50.0

170,6009.94

PQRY-P450YSHM-A


kW 56.0191,100

10.42BTU/hkW

PQHY-P450YSHM-A56.0

191,10010.42

PQRY-P450YSHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26



WR

2


Rat

io

Rat

ioR

atio



Wat

er-p

ress

ure

drop

[kPa

]


Wat

er-p

ress

ure

drop

[kPa

]




Rat

io

Rat

io


Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.




kW 56.0191,100

11.45BTU/hkW

PQHY-P500YSHM-A56.0

191,10011.57

PQRY-P500YSHM-A


kW 63.0215,000

12.06BTU/hkW

PQHY-P500YSHM-A63.0

215,00012.06

PQRY-P500YSHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26

2 - 443


HEAT SOURCE UNITS

WR

2




Rat

io

Rat

ioR

atio



Wat

er-p

ress

ure

drop

[kPa

]


Wat

er-p

ress

ure

drop

[kPa

]


Rat

io

Rat

io


Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.




kW 63.0215,000

13.46BTU/hkW

PQHY-P550YSHM-A63.0

215,00013.60

PQRY-P550YSHM-A


kW 69.0235,400

14.65BTU/hkW

PQHY-P550YSHM-A69.0

235,40014.65

PQRY-P550YSHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26



WR

2




Rat

io

Rat

ioR

atio



Wat

er-p

ress

ure

drop

[kPa

]


Wat

er-p

ress

ure

drop

[kPa

]


Rat

io

Rat

io


Rat

io


CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput

CapacityInput


Intake air temp.


Intake air temp.




kW 69.0235,400

15.48BTU/hkW

PQHY-P600YSHM-A69.0

235,40015.62

PQRY-P600YSHM-A


kW 76.5261,000

17.12BTU/hkW

PQHY-P600YSHM-A76.5

261,00017.12

PQRY-P600YSHM-A

04 5 6 7 8

10

20

30

04 5 6 7 8

10

20

30

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.7

0.6

0.8

0.9

1.0

1.1

1.2

1.3

1.4

10 15 20 25 30 35 40 45

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.9

0.95

1

1.05

1.1

4.5 5.0 5.5 6.0 6.5 7.0 7.5

0.7

0.8

0.9

1.0

1.1

1.2

1615 17 18 19 20 21 22 23 24

0.7

0.8

0.9

1.0

1.1

1.2

2715 16 17 18 19 20 21 22 23 24 25 26

2 - 445


HEAT SOURCE UNITS

WR

2

6-2. Correction by total indoorCITY MULTI system have different capacities and inputs when many combinations of indoor units with different total capacities are connected. Using following tables, the maximum capacity can be found to ensure the system is installed with enough capacity for a particular application.

Cap

acity

(kW

)In

put(k

W)

Total capacity of indoor units

10.0

10.0

20.0

30.0

40.0

50.0

0.0

5.0

100 200 300 400

100 200 300 400 500

Cap

acity

(kW

)In

put(k

W)


10.0

20.0

30.0

40.0

50.0

0.0

5.0

10.0

PQRY-P200YHM-A

PQRY-P250YHM-A

CoolingHeating

P200

CoolingHeating

P250



WR

2

PQRY-P300YHM-A

PQRY-P400YSHM-A

100 200 300 400 500

Cap

acity

(kW

)In

put(k

W)


10.0

20.0

30.0

40.0

50.0

0.0

5.0

10.0

CoolingHeating

P300

100 200 300 400 500 600 700

Cap

acity

(kW

)In

put(k

W)


20.0

30.0

40.0

50.0

60.0

0.0

2.50

7.50

10.0

5.00

CoolingHeating

P400

2 - 447


HEAT SOURCE UNITS

WR

2

200 300 400 500 600 700 800

Cap

acity

(kW

)In

put(k

W)


30.0

40.0

50.0

60.0

70.0

0.0

5.0

15.0

20.0

10.0

CoolingHeating

P500

200 300 400 500 600 700 800

Cap

acity

(kW

)In

put(k

W)


30.0

40.0

50.0

60.0

70.0

0.0

5.0

15.0

20.0

10.0

CoolingHeating

P450

PQRY-P450YSHM-A

PQRY-P500YSHM-A



WR

2

Cap

acity

(kW

)In

put(k

W)


50.0

40.0

30.0

20.0

60.0

70.0

80.0

90.0

0.0

10.0

200 300 400 500 600 700 800 900

CoolingHeating

P550

PQRY-P550YSHM-A

PQRY-P600YSHM-A

Cap

acity

(kW

)In

put(k

W)


50.0

40.0

30.0

20.0

60.0

70.0

80.0

90.0

0.0

10.0

300 400 500 600 700 800 900 1000

CoolingHeating

P600

2 - 449


HEAT SOURCE UNITS

WR

2

6-3. Correction by refrigerant piping lengthCITY MULTI systems can have extended piping lengths if certain limitations are followed, but cooling/heating capacity could be reduced. Using following correction factor by equivalent piping length shown at 6-3-1 and 6-3-2, capacity can be found. 6-3-3 shows how to obtain the equivalent piping length.

6-3-1. Cooling capacity correction

Piping equivalent length (m)

1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

PQRY-P200YHM-A100

150

200300

0 20 40 60 80 100 120 140 160 180

Total capacity of indoor unit


1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P450YSHM-A225

338

450675



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P250YHM-A125

188

250375



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P500YSHM-A250

375

500750



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P300YHM-A150

225

300450



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P550YSHM-A275

413

550825



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P400YSHM-A200

300

400600



1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Coo

ling

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P600YSHM-A300

450

600900




WR

2

6-3-2. Heating capacity correction

6-3-3. How to obtain the equivalent piping length

6-4. Correction by port counts of the BC controllerIndoor unit sizes P200 and P250 must be connected to 2 ports on the BC controller.Indoor unit sizes from P100 to P140 should normally be connected to 2 ports on the BC controller (set BC controller DIP-SW 4-6 to its ON position).In cases whereby indoor unit sizes from P100 to P140 are connected to only 1port on the BC controller (set BC controller DIP-SW 4-6 to its OFF position), the cooling capacity of the indoor unit should be multiplied by a correction factor of 0.97.


1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Hea

ting

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P200YHM-A


1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Hea

ting

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P400, 450, 500YSHM-A


1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Hea

ting

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P250, 300YHM-A


1

0.90

0.80

0.95

0.85

0.75

0.65

0.70

Hea

ting

capa

city

cor

rect

ion

fact

or

0 20 40 60 80 100 120 140 160 180

PQRY-P550, 600YSHM-A

1 PQRY-P200YHMEquivalent length = (Actual piping length to the farthest indoor unit) + (0.35 x number of bends in the piping) m

2 PQRY-P250, 300YHMEquivalent length = (Actual piping length to the farthest indoor unit) + (0.42 x number of bends in the piping) m

3 PQRY-P400, 450, 500, 550, 600YSHMEquivalent length = (Actual piping length to the farthest indoor unit) + (0.50 x number of bends in the piping) m

2 - 451


HEAT SOURCE UNITS

WR

2

6-5. Operation temperature range

30

25

20

15

10

5-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50-4 5 14 23 32 41 50 59 68 77 86 95 104 113 122

-4 5 14 23 32 41 50 59 68 77 86 95 104 113 122

Indo

or te

mpe

ratu

re

Circulating water temperature

30

25

20

15

10

5

86

77

68

59

50

41

86

77

68

59

50

41-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50

Indo

or te

mpe

ratu

re

Circulating water temperature

Water temperature

10 to 45 C (50 to 113 F) 15 to 27 CDB (59 to 81 FDB)

Indoor temperature

Cooling Heating

15 to 24 CWB (59 to 75 FWB)

Combination of cooling/heating operation (Cooling main or Heating main)

• Cooling

• Heating

7. SYSTEM DESIGN GUIDE G10 2nd


WR

2

7. SYSTEM DESIGN GUIDE7-1. Designing of water circuit system

E.H

S.T

T T

C.T.P

C.T

P

3-way valve

1) Example of basic water circuit

Example of basic water circuit for water heat source CITY MULTI

The water circuit of the water heat source CITY MULTI connects the heat source unit with the cooling tow-er/auxiliary heat source/heat storage tank/circulation pump with a single system water piping as shown in the figure below. The selector valve automatically controls to circulate water toward the cooling tower in the cooling season, while toward the heat storage tank in the heat-ing season. If the circulation water temperature is kept in a range of 10~45°C[50~113°F]* regardless of the building load, the water heat source CITY MULTI can be operated for either cooling or heating. Therefore in the summer when only cooling load exists, the tempera-ture rise of circulation water will be suppressed by oper-ating the cooling tower. While in the winter when heat-ing load increases, the temperature of circulation water may be dropped below 10°C[50°F]. Under such situa-tion, the circulation water will be heated with the auxili-ary heat source if it drops below a certain temperature.When the thermal balance between cooling and heating operation is in a correct proportion, the operation of the

auxiliary heat source and cooling tower is not required.In order to control the above thermal balance properly and use thermal energy effectively, utilizing of heat stor-age tanks, and night-time discounted electric power as a auxiliary heat source will be economical.Meantime as this system uses plural sets of heat source unit equipped with water heat exchangers, water quality control is important. Therefore it is recommended to use closed type cooling towers as much as possible to pre-vent the circulation water from being contaminated.When open type cooling towers are used, it is essential to provide proper maintenance control such as that to install water treatment system to prevent troubles caused by contaminated circulation water.

S.T : Heating tank (Heat storage tank)C.T : Cooling towerC.T.P : Cooling water pumpP : Circulation water pumpT : Thermostat for waterE.H : Electric heater : Heat source unit for cooling operation : Heat source unit for heating operation

The indoor unit and refrigerant piping system are excluded in this figure.

2 - 453


HEAT SOURCE UNITS

WR

2

2) Cooling tower a) Types of cooling tower

Types of cooling towersThe cooling towers presently used include the open type cooling tower, open type cooling tower + heat ex-changer, closed type cooling tower, and air-cooled type cooling tower. However, as the quality control of circula-tion water is essential when units are installed in decen-tralized state inside a building, the closed type cooling tower is generally employed in such case.Although the circulation water will not be contaminated by atmospheric air, it is recommended to periodically blow water inside the system and replenish fresh water instead.In a district where the coil may be frozen in the winter, it is necessary to apply antifreeze solution to the circula-tion water, or take freeze protection measures such as to automatically discharge water inside the cooling coil at the stopping of the pump.When the open type cooling tower is used, be sure to install a water quality control device in addition to the freeze protection measures, as the water may be deter-iorated by atmospheric contaminants entered into the cooling tower and dissolved into the circulation water.

Closed type

Air-cooled type

b) Calculation method of cooling tower capacityAll units of the water heat source CITY MULTI may pos-sibly be in cooling operation temporarily (at pulling down) in the summer, however, it is not necessary to determine the capacity according to the total cooling ca-pacity of all CITY MULTI units as this system has a wide operating water temperature range.

It is determined in accordance with the value obtained by adding the maximum cooling load of an actual build-ing, the input heat equivalent value of all CITY MULTI units, and the cooling load of the circulating pumps. Please check for the values of the cooling water volume and circulation water volume.

Cooling tower capacity = (Refrigeration ton)

Qc : Maximum cooling load under actual state (kcal/h)Qw : Total input of water heat source CITY MULTI at simultaneous operation under

maximum state (kW)Pw : Shaft power of circulation pumps (kW)

Qc + 860 x (ΣQw + Pw)3,900

Cooling tower capacity = (Refrigeration ton)

Qc : Maximum cooling load under actual state (BTU/h)Qw : Total input of water heat source CITY MULTI at simultaneous operation under

maximum state (kW)Pw : Shaft power of circulation pumps (kW)

* 1 Refrigerant ton of cooling tower capacity ≈ US refrigerant ton x (1+0.3) = 3,900 kcal/h = 15,500 BTU/h

Qc + 3,412 x (ΣQw + Pw)15,500



WR

2

Determining the auxiliary heat source capacity

When heat storage tank is not used

For the CITY MULTI water heat source system, a heat storage tank is recommended to use. When employ-ment of the heat storage tank is difficult, the warming up operation should be arranged to cover the starting up heating load. Since the holding water inside the piping circuit owns heat capacity and the warming up opera-tion can be assumed for about one hour except that in a cold region, the heat storage tank capacity is required to

be that at the maximum daily heating load including the warming up load at the next morning of the holiday. However the auxiliary heat source capacity should be determined by the daily heating load including warming up load on the week day.For the load at the next morning of the holiday, heat storage is required by operating the auxiliary heat source even outside of the ordinary working hour.

3) Auxiliary heat source and heat storage tankWhen the heating load is larger than the cooling load, the circulation water temperature lowers in accordance with the heat balance of the system. It should be heated by the auxiliary heat source in order to keep the inlet wa-ter temperature within the operating range of the water heat source CITY MULTI.Further in order to operate the water heat source CITY MULTI effectively, it is recommended to utilize the heat storage tank to cover the warming up load in the morn-ing and the insufficient heat amount.Effective heat utilization can be expected to cover insuffi-cient heat at the warming up in the next morning or peak load time by storing heat by installing a heat stor-age tank or operating a low load auxiliary heat source at the stopping of the water heat source CITY MULTI. As it can also be possible to reduce the running cost through the heat storage by using the discounted night-time elec-tric power, using both auxiliary heat source and heat storage tank together is recommended.

The effective temperature difference of an ordinary heat storage tank shows about 5deg. even with the storing temperature at 45°C[113°F].However with the water heat source CITY MULTI, it can be utilized as heating heat source up to 15°C[59°F] with an effective temperature of a high 30deg°C[54deg°F]. approximately, thus the capacity of the heat storage tank can be minimized.

a) Auxiliary heat sourceThe following can be used as the auxiliary heat source.

• Boiler (Heavy oil, kerosine, gas, electricity)• Electric heat (Insertion of electric heater into heat stor-

age tank)• Outdoor air (Air-heat source heat pump chiller)• Warm discharge water (Exhaust water heat from ma-

chines inside building and hot water supply)• Utilization of night-time lighting• Solar heat

Please note that the auxiliary heat source should be se-lected after studying your operating environment and economical feasibility.

QH = HCT ( 1 - ) - 1000 x Vw x ΔT - 860 x Pw

QH : Auxiliary heat source capacity (kcal/h)HCT : Total heating capacity of each water heat source CITY MULTI (kcal/h)COPH : COP of water heat source CITY MULTI at heatingVW : Holding water volume inside piping (m3)ΔT : Allowable water temperature drop = TWH - TWL (°C)TWH : Heat source water temperature at high temperature side (°C)TWL : Heat source water temperature at low temperature side (°C)PW : Heat source water pump shaft power (kW)

1COPh

QH = HCT ( 1 - ) - 8.343 x Vw x ΔT - 3412 x Pw

QH : Auxiliary heat source capacity (BTU/h)HCT : Total heating capacity of each water heat source CITY MULTI (BTU/h)COPH : COP of water heat source CITY MULTI at heatingVW : Holding water volume inside piping (G)ΔT : Allowable water temperature drop = TWH - TWL (°F)TWH : Heat source water temperature at high temperature side (°F)TWL : Heat source water temperature at low temperature side (°F)PW : Heat source water pump shaft power (kW)

1COPh

2 - 455


HEAT SOURCE UNITS

WR

2

When heat storage tank is not used

HQ1T • ( 1 - ) - 860 x Pw x T2

QH = x K (kcal) T1

QH1T : Total of heating load on weekday including warming up (kcal/day)T1 : Operating hour of auxiliary heat source (h)T2 : Operating hour of heat source water pump (h)K : Allowance factor (Heat storage tank, piping loss, etc.) 1.05~1.10

HQ1T is calculated from the result of steady state load calculation similarly by using the equation below.HQ1T = 1.15 x (ΣQ'a + ΣQ'b + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ (ΣQe1 + ΣQe2 + ΣQe3) (T2 - 1)

Q'a : Thermal load from external wall/roof in each zone (kcal/h)Q'b : Thermal load from glass window in each zone (kcal/h)Q'c : Thermal load from partition/ceiling/floor in each zone (kcal/h)Q'd : Thermal load by infiltration in each zone (kcal/h)Q'f : Fresh outdoor air load in each zone (kcal/h)Q'e1 : Thermal load from human body in each zone (kcal/h)Q'e2 : Thermal load from lighting fixture in each zone (kcal/h)Q'e3 : Thermal load from equipment in each zone (kcal/h)ψ : Radiation load rate 0.6~0.8T2 : Air conditioning hour

1COPh

HQ1T • ( 1 - ) - 3,412 x Pw x T2

QH = x K (BTU) T1

QH1T : Total of heating load on weekday including warming up (BTU/day)T1 : Operating hour of auxiliary heat source (h)T2 : Operating hour of heat source water pump (h)K : Allowance factor (Heat storage tank, piping loss, etc.) 1.05~1.10

HQ1T is calculated from the result of steady state load calculation similarly by using the equation below.HQ1T = 1.15 x (ΣQ'a + ΣQ'b + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ (ΣQe1 + ΣQe2 + ΣQe3) (T2 - 1)

Q'a : Thermal load from external wall/roof in each zone (BTU/h)Q'b : Thermal load from glass window in each zone (BTU/h)Q'c : Thermal load from partition/ceiling/floor in each zone (BTU/h)Q'd : Thermal load by infiltration in each zone (BTU/h)Q'f : Fresh outdoor air load in each zone (BTU/h)Q'e1 : Thermal load from human body in each zone (BTU/h)Q'e2 : Thermal load from lighting fixture in each zone (BTU/h)Q'e3 : Thermal load from equipment in each zone (BTU/h)ψ : Radiation load rate 0.6~0.8T2 : Air conditioning hour

1COPh



WR

2

b) Heat storage tankHeat storage tank can be classified by types into the open type heat storage tank exposed to atmosphere, and the closed type heat storage tank with structure separated from atmosphere. Although the size of the tank and its installation place should be taken into ac-count, the closed type tank is being usually employed

by considering corrosion problems.The capacity of heat storage tanks is determined in ac-cordance with the daily maximum heating load that in-cludes warming up load to be applied for the day after the holiday.

HQ2T ( 1 - ) - 860 x Pw x T2 - QH x T2

V = (ton) ΔT x 1,000 x ηV

1COPh

HQ2T ( 1 - ) - 3,412 x Pw x T2 - QH x T2

V = (Ibs) ΔT x ηV

1COPh

When auxiliary heat source is operated during operation and even after stopping of water heat source CITY MULTI unit

HQ2T ( 1 - ) - 860 x Pw x T2

V = (ton) ΔT x 1,000 x ηV

HQ2T : Maximum heating load including load required for the day after the holiday (kcal/day)ΔT : Temperature difference utilized by heat storage tank (deg°C)ηV : Heat storage tank efficiency

HQ2T : 1.3 x (ΣQ'a + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ(ΣQe2 + ΣQe3) (T2 - 1)

1COPh

HQ2T ( 1 - ) - 3,412 x Pw x T2

V = (Ibs) ΔT x ηV

HQ2T : Maximum heating load including load required for the day after the holiday (BTU/day)ΔT : Temperature difference utilized by heat storage tank (deg°F)ηV : Heat storage tank efficiency


1COPh

HQ2T : Maximum heating load including load required for the day after the holiday (kcal/day)ΔT : Temperature difference utilized by heat storage tank (deg°C)ηV : Heat storage tank efficiency


HQ2T : Maximum heating load including load required for the day after the holiday (BTU/day)ΔT : Temperature difference utilized by heat storage tank (deg°F)ηV : Heat storage tank efficiency


When auxiliary heat source is operated after stopping of water heat source CITY MULTI unit

2 - 457


HEAT SOURCE UNITS

WR

2

4) Piping system

System example of water circuit

The following items should be kept in your mind in planning / designing water circuits.

a) All units should be constituted in a single circuit in principle.

b) When plural numbers of the water heat source CITY MULTI unit are installed, the rated circulating water flow rate should be kept by making the piping resistance to each unit almost same value. As an example, the reverse return system as shown below may be employed.

c) Depending on the structure of a building, the water circuit may be prefabricated by making the layout uniform.

d) When a closed type piping circuit is constructed, install an expansion tank usable commonly for a make-up water tank to absorb the expansion/contraction of water caused

by temperature fluctuation.

e) If the operating temperature range of circulation water stays within the temperature near the normal temperature (summer : 29.4°C[85°F], winter : 21.1°C[70°F]), thermal insulation or anti-sweating work is not required for the piping inside buildings.

In case of the conditions below, however, thermal insulation is required.

• When well water is used for heat source water.• When piped to outdoor or a place where freezing may

be caused.• When vapor condensation may be generated on piping

due to an increase in dry bulb temperature caused by the entry of fresh outdoor air.

Heatsource

unit

BC controller

Backflow prevention valvePump Strainer

3-way valve

3-way valve

Cooling tower Heating tank

Flexible joint

Refrigerant piping

Refrigerant piping

To indoor unit

ValveJoint

Drain

Y-shape strainer

Heatsource

unit

BC controller

Heatsource

unit

BC controller

Heatsource

unit

BC controller



WR

2

5) Practical System Examples and Circulation Water Control

Example-1 Combination of closed type cooling tower and hot water heat storage tank (using underground hollow slab)

Since the water heat source CITY MULTI is of water heat source system, versatile systems can be constitut-ed by combining it with various heat sources.The practical system examples are given below.Either cooling or heating operation can be performed if the circulation water temperature of the water heat source CITY MULTI stays within a range of 15~45°C

[59~113°F]. However, the circulation water temperature near 32°C[90°F] for cooling and 20°C[68°F] for heating is recommended by taking the life, power consumption and capacity of the air conditioning units into considera-tion. The detail of the control is also shown below.

By detecting the circulation water temperature of the water heat source CITY MULTI system with T1 (around 32°C[90°F]) and T2 (around 20°C[68°F]), the temperature will be controlled by opening/closing V1 in the summer and V2 in the winter.In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will open to lower the circulation water temperature. While in the winter, as the circulation water temperature drops, V2 will open following the command of T2 to rise the circulation water temperature.The water inside the heat storage tank will be heated by the auxiliary heat source by V3 being opened with timer op-eration in the night-time. The electric heater of the auxiliary heat source will be controlled by T3 and the timer. The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control of the fan and pump following the command of the auxiliary switch XS of V1, that operates only the fan at the light load while the fan and pump at the maximum load thus controlling water temperature and saving motor power.

Heatsource

unit

Heat exchanger

Heat storagetank pump

T1~T4 : ThermostatV1~V2 : Proportional type motor-driven 3-way valveV3 : Motor-driven 3-way valveXS : Auxiliary switchMG : Magnetic switchEH : Electric heater

Heat storage tank

Auxiliaryheat source

T2

V2

EH

T4

MG

V3

T3

Cooling water pumpClosed typecooling tower

Expansion tank

Circulation water pump

V1

T1XS

2 - 459


HEAT SOURCE UNITS

WR

2

Example-2 Combination of closed type cooling tower and hot water heat storage tank

In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will open to lower the circulation water temperature. In the winter, if the circulation water temperature stays below 25°C[77°F], V2 will open/close by the command of T2 to keep the circulation water temperature constant.The temperature of the hot water inside the heat storage tank will be controlled through the step control of the electric heater by step controller operation following the command of T3.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking thus pre-venting the high temperature water from entering into the system at the starting of the pump.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control of the fan and pump following the command of the auxiliary switch XS of V1, that operates only the fan at the light load while the fan and pump at the maximum load thus controlling water temperature and saving motor power.

Heatsource

unit

Closed typecooling tower

T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatT3 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveV2 : Proportional type, motor-driven 3-way valveXS : Auxiliary switch (Duplex switch type)SC : Step controllerR : RelayMG : Magnetic

SC MG

T3

CV

V1

XS

R

V2

T2

Hot water heatstorage tank

Heat sourcewater pumpPump interlock



WR

2

Example-3 Combination of closed type cooling tower and boiler

In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will close to lower the circulation water temperature. In the winter, if the circulation water temperature drops below 25°C[77°F], V2 will conduct water temperature control to keep the circulation water temperature constant.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control following the command of the auxiliary switch XS of V1, thus controlling water temperature and saving motor power.

Heatsource

unit


T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatT3 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveS : Selector switchR : RelayXS : Auxiliary switch (Duplex switch type)

Relay board

Boiler

XSV1

T1

V2

R

T2

Heat sourcewater pump

Pump interlock

2 - 461


HEAT SOURCE UNITS

WR

2

Example-4 Combination of closed type cooling tower and heat exchanger (of other heat source)

In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will close to lower the circulation water temperature. In the winter, if the circulation water temperature drops below 26°C[79°F], V2 will conduct water temperature control to keep the circulation water temperature constant.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control following the command of the auxiliary switch XS of V1, thus controlling water temperature and saving motor power.

Heatsource

unit


T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveV2 : Proportional type, motor-driven 3-way valveS : Selector switchR : RelayXS : Auxiliary switch (Duplex switch type)

Relay board

XSV1

T1

V2

T2


Heat exchanger

Other heat source water



WR

2

Indoorunit

Heat sourceequipment

Watercircuit


(MP)

Site control panel

Refrigerant piping

Transmission lineBC controller

Remote controllerRoom-A

Indoorunit

Room-B

Room-E

Indoorunit

Room-C

Indoorunit

Room-D

Room-F(Remote controller

operation at two spot)Room-G

6) Pump interlock circuit

TM1

TM2

1TB8

Heat source equipment

Heat source equipment

To next equipment

2

3

4

1TB8

2

3

4

52P

MP

Site control panel ~ / N 240/230/220V

X : RelayTM1, 2 : Timer relay (closes after elapsing the set time when it is powered, while opens promptly when it is not powered)52P : Magnetic contactor for heat source water pumpMP : Heat source water pumpMCB : Circuit breaker

*Remove the short circuit wire between 3 and 4 when wiring to TB8.

52P

TM1

MCB

TM2

• Plural indoor units (8HP:15sets, 16HP:16sets maximum) being connected to a single refrigerant system can be controlled individually.• The transmission line is of a jumper wiring system using non-polar 2 wires.

This circuit uses the “Terminal block for pump interlock (TB8)“ inside the electrical parts box of the heat source equipment.This circuit is for interlocking of the heat source equipment operation and the heat source water pump.

Wiring diagram

L1 N

2 - 463


HEAT SOURCE UNITS

WR

2

Operation ON signal

Pump Interlock

Terminal No.

Output

Operation

TB8-1, 2

Relay contacts output Rated voltage : L1 - N : 220 ~ 240VRated load : 1A

• When Dip switch 2-7 is OFFThe relay closes during compressor operation.

• When DIP switch 2-7 is ON.The relay closes during reception of cooling or the heating operation signal from the controller.(Note : It is output even if the thermostat is OFF (when the compressor is stopped).)

Terminal No.

Input

Operation

TB8-3, 4

Level signal

If the circuit between TB8-3 and TB8-4 is open, compressor operation is prohibited.



WR

2

7-2. Water piping work

Installation example of heat source unit

Although the water piping for the CITY MULTI WR2 system does not differ from that for ordinary air conditioning systems, pay special attention to the items below in conducting the piping work.

1) Items to be observed on installation work• In order to equalize piping resistance for each unit, adapt

the reverse return system.• Mount a joint and a valve onto the water outlet/inlet of the

unit to allow for maintenance, inspection and replacement work. Be sure to mount a strainer at the water inlet piping of the unit. (The strainer is required at the circulation water inlet to protect the heat source unit.)

* The installation example of the heat source unit is shown right.

• Be sure to provide an air relief opening on the water piping properly, and purge air after feeding water to the piping system.

• Condensate will generate at the low temperature part inside the heat source equipment. Connect drain piping to the drain piping connection located at the bottom of the heat source equipment to discharge it outside the equip-ment.

• At the center of the header of the heat exchanger water inlet inside the unit, a plug for water discharge is being provided.Use it for maintenance work or the like.

• Mount a backflow prevention valve and a flexible joint for vibration control onto the pump.

• Provide a sleeve to the penetrating parts of the wall to prevent the piping.

• Fasten the piping with metal fitting, arrange the piping not to expose to cutting or bending force, and pay sufficient care for possible vibration.

• Be careful not to erroneously judge the position of the inlet and outlet of water.(Lower position : Inlet, Upper position : Outlet)

• When connecting heat source unit water piping and water piping on site, apply liquid sealing material for water piping over the sealing tape before connection. (for Maximum water pressure above 1.0MPa)

• Wrap the sealing tape as follows.Wrap the joint with sealing tape in the direction of the threads (clockwise), and do not let the tape run over the edge.Overlap the sealing tape by two-thirds to three-fourths of its width on each turn. Press the tape with your fingers so that it is pressed firmly against each thread.Leave the 1.5th through 2nd farthest threads away from the pipe end unwrapped.

• Hold the pipe on the unit side in place with a spanner when installing the pipes or strainer. Tighten screws to a torque of 150N·m.

2) Thermal insulation workThermal insulation or anti sweating work is not required for the piping inside buildings in the case of the CITY MULTI WR2 system if the operating temperature range of circulation water stays within the temperature near the normal (summer : 29.4°C[85°F], winter : 21.1°C[70°F]).In case of the conditions below, however, thermal insula-tion is required.

• Use of well water for heat source water• Outdoor piping portions• Indoor piping portions where freezing may be caused in

winter• A place where vapor condensation may be generated on

piping due to an increase in dry bulb temperature inside the ceiling caused by the entry of fresh outdoor air

• Drain piping portions

3) Water treatment and water quality controlFor the circulation water cooling tower of the CITY MULTI WR2 system, employment of the closed type is recom-mended to keep water quality. However, in the case that an open type cooling tower is employed or the circulating water quality is inferior, scale will adhere onto the water heat exchanger leading to the decreased heat exchange capacity or the corrosion of the heat exchanger. Be sufficiently careful for water quality control and water treatment at the installation of the circulation water system

• Removal of impurities inside pipingBe careful not to allow impurities such as welding fragment, remaining sealing material and rust from mixing into the piping during installation work.

• Water treatmentThe water quality standards have been established by the industry (Japan Refrigeration, Air Conditioning Industry Association, in case of Japan) for water treatment to be applied.

1

2

3

pH (25°C[77°F])Electric conductivity

Chloride ion (mg Cl-/ )Sulfate ion (mg SO4 2-/ )Acid consumption (pH4.8)

(mg CaCO3/ )Total hardness (mg CaCO3/ )Calcium hardness (mg CaCO3/ )Ionic silica (mg SiO2/ )Iron (mg Fe/ )Copper (mg Cu/ )

Sulfide ion (mg S2-/ )

Ammonium ion (mg NH4+/ )

Residual chlorine (mg Cl/ )Free carbon dioxide (mg CO2/ )Ryzner stability index

Standarditems

Refer-enceitems

Items

Lower mid-rangetemperature water system

7.0 ~ 8.030 or less

[300 or less]50 or less50 or less

50 or less

70 or less50 or less30 or less1.0 or less1.0 or lessnot to bedetected

0.3 or less0.25 or less0.4 or less

–

7.0 ~ 8.030 or less

[300 or less]50 or less50 or less

50 or less

70 or less50 or less30 or less0.3 or less0.1 or lessnot to bedetected

0.1 or less0.3 or less4.0 or less

–

TendencyRecirculating

water

[68<T<140°F][20<T<60°C]

Make-upwater

Corrosive Scale-forming

Reference : Guideline of Water Quality for Refrigeration and Air ConditioningEquipment. (JRA GL02E-1994)

(mS/m) (25°C[77°F])(μS/cm) (25°C[77°F])

Main circulatingwater pipe

Shutoff valve

Y-type strainer

Shutoffvalve

Refrigerant pipes

Drain pipe

Water outlet (lower)

Water inlet (upper)

2 - 465


HEAT SOURCE UNITS

WR

2

In order to keep the water quality within such standards, you are kindly requested to conduct bleeding-off by overflow and periodical water quality tests, and use inhibitors to suppress condensation or corrosion. Since piping may be corroded by some kinds of inhibitor, consult an appropriate water treatment expert for proper water treatment.

4) Pump interlockOperating the heat source unit without circulation water inside the water piping can cause a trouble. Be sure to provide interlocking for the unit operation and water circuit. Since the terminal block is being provided inside the unit, use it as required.

8. OPTIONAL PARTS G10 2nd


WR

2

8. OPTIONAL PARTS8-1. JOINTCITY MULTI units can be easily connected by using Joint sets and Header sets provided by Mitsubishi Electric. Three kinds of Joint sets are available for use. Refer to section 3 in "System Design" or the Installation Manual that comes with the Joint set for how to install the Joint set.

For Gas pipe:

*Pipe diameter is indicated by inside diameter.

CMY-Y102SS-G2<Deformed pipe(Accessory)>

ø15.88

ø19.05ø19.05

30

58 (2 Pcs.)

(Outside diameter)

(Outside diameter)

(Outside diameter)

ø19.05

ø19.05

ø12.7ø15.88

ø15.88

ø12.7

28

30

37

36

18

ø9.52

ø9.52

ø9.52(Outside diameter)

ø9.52

(2 Pcs.)

ø6.35

20

For Liquid pipe:mm

<Deformed pipe(Accessory)>

For Gas pipe: For Liquid pipe:


mmCMY-Y102LS-G2



ø25.4 ø25.4

ø19.05

76

39

(2 Pcs.)

(2 Pcs.)

(2 Pcs.)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

54

41

45

42

54

30

37

ø22.2ø25.4

ø25.4 ø28.58

ø19.05ø25.4

ø15.88ø25.4ø19.05

ø19.05

ø12.7ø19.05

ø15.88

ø22.2ø9.52

ø12.7 ø12.7

40

20

(2 Pcs.)

(Outside diameter)

(Outside diameter)

ø12.7

ø9.52

23

20

ø9.52

ø6.35

For Gas pipe:


mmCMY-Y202S-G2





(Outside diameter)

(Outside diameter)

ø12.7

ø15.88

28

23

28

23

ø9.52

ø6.35

ø9.52

ø12.7

ø12.7ø15.88 ø15.88

49

23

ø25.4 ø25.4ø19.05

76

39

(3 Pcs.)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

(Outside diameter)

54

54

42

54

30

37

ø22.2ø25.4

ø25.4 ø28.58

ø25.4ø19.05

ø19.05

ø19.05

ø12.7ø19.05

ø15.88

ø22.2

For Liquid pipe:

2 - 467


HEAT SOURCE UNITS

WR

2

8-2. OUTDOOR TWINNING KITThe following optional Outdoor Twinning Kit is needed to use to combine multiple refrigerant pipes. Refer to the chapter entitled System Design Section for the details of selecting a proper twinning kit.

High-pressure twinning pipe

Low-pressure pipe twinning kitCMY-Q100VBK


<Pipe for routing through the front (Accessory)>

(Outside diameter)

61

15454

41

35

80

62

<Pipe for routing through the front (Accessory)>

<Elbow pipe(Accessory)>

(Outside diameter)

(Outside diameter) 95

132

2846

23108

23122432

160

50

50

36

36

The angle of the branch pipe for hign pressure is within against the horizontal plane. 2. Use the attached pipe to braze the port-opening of the distributer.3. Pipe diameter is indicated by inside diameter.

Note 1. Reference the attitude angle of the branch pipe below the fig.

Distributer

15

15



WR

2

8-3. JOINT KIT "CMY-R160-J1" FOR BC CONTROLLER

Ref.: WT05840X01_01

2 Joint pipe (for liquid side) 3 Joint pipe (for gas side) mm(in.)

PQRY-P-Y(S)HM-A

Joint kitCMY-R160-J1

CMY-Y102SS-G2Joint BC controller

Fig.1. CMY-R160-J1 applying scheme

IU IU IU

IU IU IU IU

Group1Total Indoor Capacity<=P80

Group2Total Indoor CapacityP81 to P250

Group3Indoor CapacityP100 to P250

Ref.: WT05840X01_02

Piping to indoor unit(Non-oxidized brazing)

Joint pipe (for liquid side)2

Joint pipe(for gas side)3

Fig.2. Connecting CMY-R160-J1 Ref.: WT05840X01_03

1. Designing CMY-R160-J1 to a PQRY-P-Y(S)HM-A systemThe maximum down-stream Indoor capacity for 1 port of BCcontroller is P80. When the down-stream Indoor capacity isabove P80, Joint kit CMY-R160-J1 is needed to combined 2ports of BC controller to enlarge the capacity, like Group 2 and3 in Fig. 1.Maximum 3 Indoor units are allowed to connect to 1 port of BCcontroller or 2 combined ports of BC controller using CMY-R160-J1.When connecting Indoor units to 1 port of BC controller or 2combined ports of BC controller using CMY-R160-J1 or CMY-Y102SS-G2 is applicable, like Group 1 and 2 in Fig. 1

Caution: Mixed cooling and heating mode at the same time forIndoor units connecting to 1 port or 2 combined ports is notavailable.

2. Piping at the installation siteThe connection of CMY-R160-J1 to BC controller and pipe leading to Indoor units is referable to Fig. 2. Non-oxidized brazing isnecessary. All piping must be careful to avoid foreign material getting inside.After piping and air-tight testing, insulation work to the Joint and pipe should be done. Details is available at the Installation Manual.

Joint kit "CMY-R160-J1" for BC controller is used to combine 2 ports of the BC controller at a PQRY-P-Y(S)HM-A system so as to enable down-stream Indoor capacity above P80 as shown in Fig. 1.

Ref: CMY_R160_J_DOC_EUDB

ø15.88(5/8")ø9.52(3/8")

ø19.

05(3

/4")

ø9.5

2(3/

8")

ø15.88(5/8")ø9.52(3/8")

226(8-29/32")226(8-29/32")

60(2

-3/8

")

60(2

-3/8

")

Instruction

This sheet

Please prepare the following items in the field. Tape for insulation material sealing Extension pipe for refrigerant circuit1pc 1pc 1pc 1pc for gas side 1pc for Iiquid side 8pcs 1pc 1pc2pcs

Cover 1 Cover 2 Cover 3 Band Reducer 2Joint pipe(Small) Joint pipe(Large) 7 9Reducer 1865432

2

1

1

OD19.05-ID22.2 OD19.05-ID15.88

The Joint kit include following items:

Cutting point

Have pipe expansion of indoor unit connecting port by cutting the piping at the cutting point.Remove burr after cutting the piping to prevent entering the piping.Check that there is no crack at the pipe expansion part.

3 - 1

CITY MULTI

G10 2nd

CONTROLLER

3. CONTROLLER

1. MITSUBISHI ELECTRIC's Air-conditioner Network System. (MELANS) ........................................................ 3 - 21-1.Function table of controllers ...................................................................................................................... 3 - 3

2. Local remote controller .................................................................................................................................... 3 - 42-1.MA remote controller [PAR-31MAA].......................................................................................................... 3 - 42-2.Smart ME Controller [PAR-U02MEDA] ..................................................................................................... 3 - 52-3.Simple MA remote controller [PAC-YT52CRA] ......................................................................................... 3 - 62-4.Wireless remote controller [PAR-FL32MA / PAR-FA32MA / PAR-SA9FA / PAR-SL94B-E] ..................... 3 - 72-5.LOSSNAY remote controller [PZ-52SF] .................................................................................................... 3 - 82-6.LOSSNAY remote controller for LGH-RX5-E [PZ-60DR-E]....................................................................... 3 - 9

3. System remote controller................................................................................................................................. 3 - 103-1.ON/OFF remote controller [PAC-YT40ANRA]........................................................................................... 3 - 103-2.Advanced touch controller [AT-50B].......................................................................................................... 3 - 123-3.Centralized controller [AG-150A]............................................................................................................... 3 - 203-4.Centralized controller [EB-50GU-J] ........................................................................................................... 3 - 293-5.Centralized controller [GB-50ADA-J]......................................................................................................... 3 - 373-6.Power supply unit [PAC-SC51KUA] .......................................................................................................... 3 - 443-7.Expansion Controller [PAC-YG50ECA] ..................................................................................................... 3 - 463-8.Integrated centralized control software [TG-2000A] .................................................................................. 3 - 493-9.Electric amount count software [PAC-YG11CDA] ..................................................................................... 3 - 543-10.PLC software for general equipment [PAC-YG21CDA]........................................................................... 3 - 553-11.BACnet® interface [BAC-HD150] ............................................................................................................ 3 - 563-12.PLC software for demand input [PAC-YG41CDA]................................................................................... 3 - 583-13.LONWORKS® interface [LMAP04-E].......................................................................................................... 3 - 603-14.Transmission booster [PAC-SF46EPA]................................................................................................... 3 - 633-15.AHC ADAPTER [PAC-IF01AHC-J].......................................................................................................... 3 - 643-16.PI controller [PAC-YG60MCA]................................................................................................................. 3 - 693-17.DIDO controller [PAC-YG66DCA] ........................................................................................................... 3 - 753-18.AI controller [PAC-YG63MCA]................................................................................................................. 3 - 85

4. System component .......................................................................................................................................... 3 - 944-1.S, Y, HP, R2 series.................................................................................................................................... 3 - 944-2.Outdoor unit input/output connector .......................................................................................................... 3 - 964-3.WY, WR2 series ........................................................................................................................................ 3 - 984-4.Heat source unit input/output connector.................................................................................................... 3 - 1004-5.Indoor unit "-E" type input/output connector .............................................................................................. 3 - 101

wr2 series g10 2nd · 2019. 2. 6. · hic circuit (hic: heat inter-changer) - - drawing external...

Documents