note t r-410a h p r s · attention to note 8 of table 310 regarding ampacity adjustment factors...

Manual 2100-455A

of 25

INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE HEAT PUMPS

Models:

CH3S1

CH4S1

CH5S1

Manual : 2100-455A

Supersedes: 2100-455

File: Volume III Tab 17

Date: 08-18-06

Bard Manufacturing Company, Inc.

Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.

© Copyright 2004

NOTE

THIS IS AN R-410A

HIGH PRESSURE

REFRIGERANT SYSTEM

Manual 2100-455A

of 25

CONTENTS

Figures

Figure 1 Unit Dimensions CH3S1 ...................... 5

Figure 2 Unit Dimensions CH4S1 & CH5S1 ...... 6

Figure 3 Mounting Instructions CH3S1 ............ 10

Figure 4 Mounting Instructions CH4S1/CH5S1 . 11

Figure 5 Electric Heat Clearance ..................... 12

Figure 6 Wall Mounting Instructions ................. 13

Figure 7 Wall Mounting Instructions ................. 13

Figure 8 Common Wall Mounting Installations . 14

Figure 9 Common Wall Mounting Installations . 15

Figure 10 Unit 24V Terminal Board .................... 15

Figure 11 Low Pressure Control Bypass Timer . 17

Figure 12 Defrost Control Board ........................ 19

Figure 13 Fan Blade Setting .............................. 22

Tables

Table 1 Electric Heat Table ................................ 4

Table 2 Electrical Specifications ........................ 7

Table 3 Thermostat Wire Size ......................... 15

Table 4 Wall Thermostat .................................. 16

Table 5 Troubleshooting .................................. 20

Table 6 Fan Blade Dimensions........................ 22

Table 7 Refrigerant Charge ............................. 23

Table 8 Indoor Blower Performance ................ 23

Table 9 Maximum ESP of Operation ............... 23

Table 10 Pressure Table - High Cooling ............ 24

Table 11 Pressure Table - Low Cooling ............. 24

Table 12 Pressure Table - High Heating ............ 25

Table 13 Pressure Table - Low Heating ............. 25

Getting Other Information and Publications

For More Information ............................................... 3

Wall Mount General

Heat Pump Wall Mount Model Nomenclature ....... 4

Shipping Damage ................................................. 8

General .............................................................. 8

Duct Work ............................................................. 8

Filters .............................................................. 8

Condensate Drain – Evaporator ........................... 8

Installation Instructions

Wall Mounting Information .................................... 9

Mounting the Unit .................................................. 9

Wiring – Main Power ........................................... 15

Wiring – Low Voltage Wiring ............................... 15

Low Voltage Connections ................................... 16

Start Up

Application .......................................................... 16

Safety Practices .................................................. 17

Important Installer Note....................................... 17

Pressure Service Ports ....................................... 17

High & Low Pressure Switch .............................. 17

Three Phase Scroll Compressor Start Up ... 17 & 18

Phase Monitor ..................................................... 18

Service Hints ....................................................... 18

Sequence of Operation ....................................... 18

Compressor Current & Pressure

Control Module ................................................... 18

Defrost Cycle ...................................................... 19

Troubleshooting

Solid State Heat Pump Control

Troubleshooting Procedure................................. 20

Checking Temperature Sensor

Outside Unit Circuit ............................................. 21

Temperature vs. Resistance of Temperature ...... 21

Compressor Solenoid ......................................... 22

Fan Blade Setting Dimensions ........................... 22

Removal of Fan Shroud ...................................... 22

Refrigerant Charge R-410A ................................ 22

Pressure Tables ............................................. 24-25

Manual 2100-455A of 25

Getting Other Information and Publications

These publications can help you install the air

conditioner or heat pump. You can usually find these at

your local library or purchase them directly from the

publisher. Be sure to consult current edition of each

standard.

National Electrical Code ...................... ANSI/NFPA 70

Standard for the Installation .............. ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air ...................... ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for ............................ ACCA Manual J

Residential Winter and Summer Air Conditioning

Duct Design for Residential .............. ACCA Manual D

Winter and Summer Air Conditioning and Equipment

Selection

FOR MORE INFORMATION, CONTACTTHESE PUBLISHERS:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Ave. N.W.

Washington, DC 20009

Telephone: (202) 483-9370

Fax: (202) 234-4721

ANSI American National Standards Institute

11 West Street, 13th Floor

New York, NY 10036

Telephone: (212) 642-4900

Fax: (212) 302-1286

ASHRAE American Society of Heating, Refrigerating,

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: (404) 636-8400

Fax: (404) 321-5478

NFPA National Fire Protection Association

Batterymarch Park

P.O. Box 9101

Quincy, MA 02269-9901

Telephone: (800) 344-3555

Fax: (617) 984-7057


WALL MOUNT GENERAL INFORMATION

HEAT PUMP WALL MOUNT MODEL NOMENCLATURE

CH 4S 1 – A 05 B P X X X X

TABLE 1

ELECTRIC HEAT TABLE

sledoMA-1S3HC B-1S3HC C-1S3HC

A-1S4HCA-1S5HC

B-1S4HCB-1S5HC

C-1S4HCC-1S5HC

1-042 1-802 3-042 3-802 3-064 1-042 1-802 3-042 3-802 3-064

WK A UTB A UTB A UTB A UTB A UTB A UTB A UTB A UTB A UTB A UTB

4 7.61 05631 4.41 04201

5 8.02 56071 1.81 00821 8.02 56071 1.81 00821

6 4.41 00502 5.21 06351 2.7 08402 4.41 00502 5.21 06351 2.7 08402

9 7.12 00603 7.81 03032 8.01 00703 7.12 00603 7.81 03032 8.01 00703

01 6.14 03143 2.63 00652 6.14 03143 2.63 00652

51 5.26 00215 1.45 00483 2.63 00215 2.13 00483 0.81 00215 5.26 00215 1.45 00483 2.63 00215 2.13 00483 0.81 00215

81 3.34 00416 5.73 05064 6.12 00416

02 2.38 05286 1.27 00215

MODEL NUMBER CONTROL MODULES

CAPACITY

3S - 3 ton

4S - 4 ton

5S - 5 ton VOLTS & PHASE

A - 230/208/60/1

B - 230/208/60/3

C - 460/60/3

REVISIONS

KW

VENTILATION OPTIONS

B - Blank-off Plate

R - Energy Recovery

V - Commercial Ventilator -

Motorized with Exhaust

FILTER OPTIONS

P - 2-Inch Pleated

COLOR OPTIONS

X - Beige (Standard)

4 - Buckeye Gray

5 - Desert Brown

8 - Dark Bronze

COIL OPTIONS

X - Standard

OUTLET OPTIONS

X - Front (Standard)

T - Top Outlet


FIG

UR

E 1

UN

IT D

IME

NS

ION

S

16"

16"

16"

16"

16"

31 5

/8"

32 3

/4"

84 1

1/16

"

43 7

/8"

42 3

/16"

13 3

/8"

48 1

/16"

5 13

/16"

"31

"

6 7/

8"

39 7

/8"

9 13

/16"

15 7

/8"

29 7

/8"

6 1/

8"

1 3/

8"

43"

6 9/

16"

7/8"

2 1/

4"8

9/16

"

Left

Sid

e V

iew

(12)

Wal

l

Rig

ht S

ide

Vie

wB

ack

Vie

w

Ent

ranc

es

Top

Rai

n

Out

let

Gril

le

Con

d.

"C

H3

S1

" U

nit

Dim

en

sio

ns

Gril

leO

utle

tO

pt. H

igh

Vol

tage

Con

d.In

let

Sup

ply

Gril

le

Fla

shin

g

Ope

ning

Ope

ning

Slo

pe T

op

Con

d.

Ret

urn

Opt

iona

l Top

Out

let

Blo

wer

Acc

ess

Doo

r

Filt

er A

cces

sD

oor

Ven

t Opt

ion

Acc

ess

Doo

r

Hea

ter

Acc

ess

Doo

r

Con

trol

Pan

el

Acc

ess

Doo

r

Doo

r

C. B

reak

er

Low

Vol

tage

Ent

ranc

e

Ent

ranc

e

Hig

h V

olta

ge

Top

Vie

w

MIS

-214

6

Mou

ntin

g H

oles

Acc

ess

Doo

rE

vap.

Dra

inH

ose

Fro

nt V

iewDra

in fo

r op

tiona

ldr

ain

pan


FIG

UR

E 2

UN

IT D

IME

NS

ION

S

42 3

/4"

39 7

/8"

1 3/

8"6

7/8"

Rig

ht S

ide

Vie

wF

ront

Vie

w

MIS

-202

0 A

Left

Sid

e V

iew

"CH

4S1

and

CH

5S1"

Uni

t Dim

ensi

ons

Bac

k V

iew

Doo

rF

ilter

Acc

ess

Sup

ply

Ope

ning

Mou

ntin

g(1

2) W

all

Ret

urn

Ope

ning

Top

Rai

nF

lash

ing

Eva

p. D

rain

Hos

e

Hol

es

Opt

. Hig

hV

olta

geE

ntra

nces

16"

6 9/

16"

48 1

/16"

9 13

/16"

15 7

/8"

29 7

/8"

6 1/

8"

43"

16"

16"

16"

7/8" 16

"2

1/4"

8 9/

16"

Con

d.

Gril

leO

utle

t

Ent

ranc

e

Ent

ranc

e

Low

Vol

tage

Hea

ter

Acc

ess

Doo

r

Con

trol

Pan

elD

oor

C. B

reak

erA

cces

s D

oor

Hig

h V

olta

ge

Acc

ess

Doo

r

22 3

/16"31

"

Blo

wer

Acc

ess

Doo

r

Inle

t Gril

leC

onde

nser

Ven

t Opt

ion

Acc

ess

Doo

r

94 1

1/16

"

43 7

/8"

42 3

/16"

13 3

/8"

41 5

/8"

5 13

/16"

Dra

in fo

r op

tiona

ldr

ain

pan

Gril

le

Con

d.O

utle

t

Slo

pe T

op

Opt

iona

l Top

Out

let

Top

Vie

w


TABLE 2

ELECTRICAL SPECIFICATIONS

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

2 Based on 75°C copper wire. All wiring must conform to NEC and all local codes.

3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code

(latest revision), Article 310 for power conductor sizing.

CAUTION: When more than one field power conductor circuit is run through one conduit, the conductors must be derated. Pay special

attention to note 8 of table 310 regarding Ampacity Adjustment Factors when more than 3 conductors are in a raceway.

ledoM

TIUCRICELGNIS TIUCRICLAUD

detaR&stloVesahP

.oNdleiF

rewoPstiuriC

3

muminiMtiucriCyticapmA

1

mumixaMlanretxE

roesuFtiucriCrekaerB

2

dleiFrewoP

eriWeziS

2

dnuorGeriWeziS

3

tiucriCmuminiMyticapmA

1

mumixaMesuFlanretxE

tiucriCrorekaerB

2

rewoPdleiFeziSeriW

2

dnuorGeziSeriW

.tkCA

.tkCB

.tkCC

.tkCA

.tkCB

.tkCC

.tkCA

.tkCB

.tkCC

.tkCA

.tkCB

.tkCC

Z0A-1S3HC50A01A51A

1-802/0321-802/0321-802/0321-802/032

11

2ro12ro1

92551858

54060909

8644

0101

88

------9233

------2525

------------

------5454

------0606

------------

------01

8

------

66

------------

------0101

------0101

------------

Z0B-1S3HC60B90B51B

3-802/0323-802/0323-802/0323-802/032

1111

32140505

03540505

01888

01010101

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

Z0C-1S3HC60C90C51C

3-0643-0643-0643-064

1111

11024242

51025252

41210101

41210101

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

------------

Z0A-1S4HC40A50A01A51A02A

1-802/0321-802/0321-802/0321-802/0321-802/0321-802/032

11

2ro12ro12ro13ro1

7375369898311

0506070909021

866332

0101

8886

------73737325

------62252525

---------------62

------05050505

------03060606

---------------03

------

8886

------01

666

---------------01

------01010101

------01010101

---------------01

Z0B-1S4HC60B90B51B81B

3-802/0323-802/0323-802/0323-802/0323-802/032

11111

7254454555

5305060606

88666

0101010101

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

Z0C-1S4HC60C90C51C81C

3-0643-0643-0643-0643-064

11111

4132828282

0252030303

2101010101

2101010101

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

Z0A-1S5HC40A50A01A51A02A

1-802/0321-802/0321-802/0321-802/0321-802/0321-802/032

12ro12ro12ro12ro13ro1

4456076969411

060708001001021

644332

0188886

---4444444444

---1262252525

---------------62

---0606060606

---5203060606

---------------03

---88888

---0101

666

---------------01

---0101010101

---0101010101

---------------01

Z0B-1S5HC60B90B51B81B

3-802/0323-802/0323-802/0323-802/0323-802/032

11222

6345363646

0506070707

86444

0101

666

------636373

------828282

---------------

------050505

------030303

---------------

------

888

------010101

---------------

------010101

------010101

---------------

Z0C-1S5HC60C90C51C81C

3-0643-0643-0643-0643-064

11111

9182232333

5253535353

018888

0101010101

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------

---------------


SHIPPING DAMAGE

Upon receipt of equipment, the carton should be

checked for external signs of shipping damage. If

damage is found, the receiving party must contact the

last carrier immediately, preferably in writing,

requesting inspection by the carrier’s agent.

GENERAL

The equipment covered in this manual is to be installed

by trained, experienced service and installation

technicians.

The refrigerant system is completely assembled and

charged. All internal wiring is complete.

The unit is designed for use with or without duct work.

Flanges are provided for attaching the supply and return

ducts.

These instructions explain the recommended method to

install the air cooled self-contained unit and the

electrical wiring connections to the unit.

These instructions and any instructions packaged with

any separate equipment, required to make up the entire

air conditioning system should be carefully read before

beginning the installation. Note particularly “Starting

Procedure” and any tags and/or labels attached to the

equipment.

While these instructions are intended as a generalrecommended guide, they do not supersede any nationaland/or local codes in any way. Authorities havingjurisdiction should be consulted before the installation ismade. See Page 3 for information on codes andstandards.

Size of unit for a proposed installation should be basedon heat loss calculation made according to methods ofAir Conditioning Contractors of America (ACCA). Theair duct should be installed in accordance with theStandards of the National Fire Protection Associationfor the Installation of Air Conditioning and VentilatingSystems of Other Than Residence Type, NFPA No.90A, and Residence Type Warm Air Heating and AirConditioning Systems, NFPA No. 90B. Where localregulations are at a variance with instructions, installershould adhere to local codes.

DUCT WORK

Any heat pump is more critical of proper operatingcharge and an adequate duct system than a straight airconditioning unit. All duct work, supply and return,must be properly sized for the design airflowrequirement of the equipment. Air ConditioningContractors of America (ACCA) is an excellent guide toproper sizing. All duct work or portions thereof not inthe conditioned space should be properly insulated inorder to both conserve energy and prevent condensationor moisture damage.

Design the duct work according to methods given by theAir Conditioning Contractors of America (ACCA).When duct runs through unheated spaces, it should beinsulated with a minimum of one inch of insulation.Use insulation with a vapor barrier on the outside of theinsulation. Flexible joints should be used to connect theduct work to the equipment in order to keep the noisetransmission to a minimum.

These units are suitable for 0 inch clearance tocombustible material. See Wall Mounting Instructionsand Figures 3, 4, 5, 6 & 7 for further details.

Ducts through the walls must be insulated and all jointstaped or sealed to prevent air or moisture entering thewall cavity.

Some installations may not require any return air duct.A metallic return air grille is required with installationsnot requiring a return air duct. The spacing betweenlouvers on the grille shall not be larger than 5/8 inch.

NOTE: If no return air duct is used, applicableinstallation codes may limit this cabinet toinstallation only in a single story structure.

Any grille that meets with 5/8 inch louver criteria maybe used. It is recommended that Bard Return Air GrilleKit RG2 through RG5 or RFG2 through RFG5 beinstalled when no return duct is used. Contactdistributor or factory for ordering information. If usinga return air filter grille, filters must be of sufficient sizeto allow a maximum velocity of 400 fpm.

FILTERS

A 2-inch pleated filter is supplied with each unit. Thefilter slides into position making it easy to service. Thisfilter can be serviced from the outside by removing the

filter access door.

CONDENSATE DRAIN – EVAPORATOR

A plastic drain hose extends from the drain pan at the

top of the unit down to the unit base. There are

openings in the unit base for the drain hose to pass

through. In the event the drain hose is connected to a

drain system of some type, it must be an open or vented

type system to assure proper drainage.


INSTALLATION INSTRUCTIONS

WALL MOUNTING INFORMATION

1. Two holes for the supply and return air openings

must be cut through the wall as shown in Figure 3.

2. On wood frame walls, the wall construction must be

strong and rigid enough to carry the weight of the

unit without transmitting any unit vibration.

3. Concrete block walls must be thoroughly inspected

to insure that they are capable of carrying the weight

of the installed unit.

MOUNTING THE UNIT

1. These units are secured by wall mounting brackets

which secure the unit to the outside wall surface at

both sides. A bottom mounting bracket is provided

for ease of installation, but is not required.

2. The unit itself is suitable for 0 inch clearance. If a

combustible wall use a minimum of 30" x 10"

dimensions for sizing. However, it is generally

recommended that a 1-inch clearance is used for

ease of installation. The supply air opening would

then be 32" x 12". See Figures 3 and 4 for details.

3. Locate and mark lag bolt locations and bottom

mounting bracket location. See Figure 3.

4. Mount bottom mounting bracket.

5. Hook top rain flashing under back bend of top. Top

rain flashing is shipped with unit attached to back of

unit on the right side.

6. Position unit in opening and secure with 5/16 lag

bolts; use 3/4 inch diameter flat washers on the lag

bolts.

7. Secure rain flashing to wall and caulk across entire

length of top. See Figure 3.

8. For additional mounting rigidity, the return air and

supply air frames or collars can be drilled and

screwed or welded to the structural wall itself

(depending upon wall construction). Be sure to

observe required clearance if combustible wall.

9. On side-by-side installations, maintain a minimum

of 20 inches clearance on right side to allow access

to control panel and heat strips, and to allow proper

airflow to the outdoor coil. Additional clearance

may be required to meet local or national codes.


7

0" m

in.

0" m

in.

"6

8

13 8

"

Uni

t Mou

ntin

g

Ret

urn

Ope

ning

Sup

ply

Ope

ning

Hol

es, 1

2 pl

aces

(Ins

tall

befo

re u

nit)

Bot

tom

Wal

l Bra

cket

Wal

l

B

43"

3

E

8

30"

16"

16"

16"

16"

16"

16"

C

8"

16"

C

16"

16"

16"

16"

"

D

A

16

5

D

Wall Section

MIS

-220

9

Ope

ning

Sup

ply

Duc

t

Acc

ess

Pan

elR

etur

n A

ir

Hea

ter

Opt

iona

lT

op O

utle

t

Rai

n F

lash

ing

(sup

plie

d)

flang

es Top

App

ly a

bea

d of

cau

lkal

ong

entir

e le

ngth

of t

opan

d be

hind

sid

e m

ount

ing

Foa

m

"CH

3S1"

Wal

l Mou

ntin

g In

stru

ctio

nsA

BC

DE

RE

QU

IRE

D D

IM. T

O M

AIN

TA

IN 0

"M

IN. C

LEA

RA

NC

E F

RO

MC

OM

BU

ST

IBLE

MA

TE

RIA

LS30

106

1/2

16

RE

QU

IRE

D D

IM. T

O M

AIN

TA

INO

PT

ION

AL

1" C

LEA

RA

NC

E F

RO

MC

OM

BU

ST

IBLE

MA

TE

RIA

LS32

125

1/2

25

FIG

UR

E 3

MO

UN

TIN

G IN

ST

RU

CT

ION

S


FIG

UR

E 4

MO

UN

TIN

G IN

ST

RU

CT

ION

S


FIGURE 5

ELECTRIC HEAT CLEARANCE

RECOMMENDED1" OPTIONAL CLEARANCE

Duct

Outside Sheeting

Unit

Inside Sheeting

Wall Frame

Supply Air

Typical Building

Supply Air DuctFlange of Wall

MIS-2210

Side section view of supply airduct for wall mounted unit showing

0" clearance to combustible surfaces.

Note: This unit is approved for 0" clearance, but the optional 1" clearance is recommended. See Figures 3 & 4.


FIGURE 6

WALL MOUNTING INSTRUCTIONS

FIGURE 7

WALL MOUNTING INSTRUCTIONS

MIS-2024

steel siding wall

Interior finished wall

Return opening

structural steel2x4's, 2x6's, and/orFraming material:

unit before installing.

"CH" Unit

flashing. Attach toFactory supplied rain

before installing unit.bracket. Mount on wall

when framing wall to support unit.

Supply opening

Exterior wood or

Bottom mounting

Follow all local building codes!

1" clearance

1" clearance

9 13/16"

6 1/8"

15 7/8"

29 7/8"

51 1/4"

44 7/8"

Supply Opening

Return Opening

These structuralmembers must beable to support theentire weight of theunit.

Locate stud to matchspacing for rest of wall.A second member maybe required for somewalls.

!Follow all local building codeswhen framing wall to support unit.

CL

MIS-2025


FIGURE 8

COMMON WALL MOUNTING INSTALLATIONS

Isolation CurbWM1CF5-X

Supply Air

Return AirSilencer WAPR11-X

RETURN AIR

Free Blow Supply Plenum WAFB51-X

Out

side

Wal

l

Unit (outside)

Note: duct maybe in attic or below rafters as shown.

Note: direction of return

Rafters

Supply Air

Return Air

Out

side

Wal

l

Unit (outside)

Rafters

Supply Air

Return Air

Unit (outside)

Finished Ceiling

Finished Ceiling

Finished Ceiling

Supply Air

Rafters

Out

side

Wal

l

False Wall Installation

Fal

se W

all

Return Air

Ret

urn

Air

for lowest sound level as shown.

Grille

Grille

below rafters as shown.Note: duct maybe in attic or

grille louvers is pointed down

Grille

Duct

Free Air Flow - No Duct

Ducted Supply - Return At Unit

Duct

MIS-2027

Wall Sleeve

Free Air Flow - No DuctLow Sound With Acoustical Plenums

And Isolation Curbs


Nine (9) wires should be run from thermostat subbase tothe 24V terminal board in the unit. A nine conductor,18 gauge copper color-coded thermostat cable isrecommended. The connection points are shown inFigure 10.

TABLE 3

THERMOSTAT WIRE SIZE

remrofsnarTAV ALF eguaGeriW

mumixaMecnatsiDteeFnI

55 3.2

eguag02eguag81eguag61egaug41egaug21

5406001061052

IMPORTANT

Only the thermostat combinations as shownabove will work with this equipment.

C

G Y2

G

E

Rc

TERMINAL BLOCK

L

UNIT LOW VOLTAGE

L

Y1 W1

RC

A1

Y1

Y B

BARD PART #8403-052

W1 W3W2 DH

W1

G O1

BC

Y2

T7652H1000 THERMOSTAT

B

Y1

W3/A1

Rh

Factory Jumper

1F93-380 THERMOSTATBARD PART #8403-049

MIS-2026 A

R W2 E

FIGURE 10

UNIT 24V TERMINAL BOARD

WIRING – MAIN POWER

Refer to the unit rating plate for wire sizing informationand maximum fuse or “HACR” type circuit breakersize. Each outdoor unit is marked with a “MinimumCircuit Ampacity”. This means that the field wiringused must be sized to carry that amount of current.Depending on the installed KW of electric heat, theremay be two field power circuits required. If this is thecase, the unit serial plate will so indicate. All modelsare suitable only for connection with copper wire. Eachunit and/or wiring diagram will be marked “Use CopperConductors Only”. These instructions must be adheredto. Refer to the National Electrical Code (NEC) forcomplete current carrying capacity data on the variousinsulation grades of wiring material. All wiring mustconform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75° Ccopper) for all models including the most commonlyused heater sizes. Also shown are the number of fieldpower circuits required for the various models withheaters.

The unit rating plate lists a “Maximum Time DelayRelay Fuse” or “HACR” type circuit breaker that is tobe used with the equipment. The correct size must beused for proper circuit protection and also to assure thatthere will be no nuisance tripping due to the momentaryhigh starting current of the compressor motor.

The disconnect access door on this unit may be lockedto prevent unauthorized access to the disconnect. Toconvert for the locking capability, bend the tab locatedin the bottom left hand corner of the disconnect openingunder the disconnect access panel straight out. This tabwill now line up with the slot in the door. When shut, apadlock may be placed through the hole in the tabpreventing entry.

See “Start Up” section for important information onthree phase scroll compressor start ups.

WIRING – LOW VOLTAGE WIRING

230 / 208V, 1 phase and 3 phase equipment dualprimary voltage transformers. All equipment leaves thefactory wired on 240V tap. For 208V operation,reconnect from 240V to 208V tap. The acceptableoperating voltage range for the 240 and 208V taps are:

TAP RANGE

240 253 – 216

208 220 – 187

NOTE: The voltage should be measured at the fieldpower connection point in the unit and whilethe unit is operating at full load (maximumamperage operating condition).

FIGURE 9

COMMON WALL MOUNTING INSTALLATIONS

Out

side

Wal

l

Clo

set W

all

Clo

set W

all

Grille

Return Air

Ret

urn

Air

Supply Air Duct

Finished Ceiling

Raised Closet Floor

Rafters

Wall Sleeve

Closet Installation

Unit (outside)

Note: duct maybe in attic or below rafters as shown.

MIS-2240

Grille


LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

Fan Only Energize G

Cooling Mode 1st Stage Energize Y, G

Cooling Mode 2nd Stage Energize Y, Y1, G

Heat Pump Heating 1st Stage Energize Y, G, B

Heat Pump Heating 2nd Stage Energize Y, Y1, G, B

3rd Stage Heating Energize G, W2, Y, B, Y1

w/Heat Pump (if employed)

Ventilation Energize G, O1

Emergency Heat Energize B, W2, E, G

LOW VOLTAGE CONNECTIONS

These units use a grounded 24 volt AC low voltage

circuit and require at least a 2 stage heating and a 2

stage cooling thermostat.

The “R” terminal is the hot terminal and the “C”

terminal is grounded.

“G” terminal is the fan input.

“Y” terminal is the compressor Stage 1 input.

“Y1” terminal is the compressor Stage 2 input.

“B” terminal is the reversing valve input. The reversing

valve must be energized for heating mode.

“R” terminal is 24 VAC hot.

“C” terminal is 24 VAC grounded.

“L” terminal is compressor lockout output. This

terminal is activated on a high or low pressure trip by

the electronic heat pump control. This is a 24 VAC

output.

“W2” terminal is second stage heat (if equipped).

“O1” terminal is the ventilation input. This terminal

energizes any factory installed ventilation option.

“E” terminal is the emergency heat input. This terminal

energizes the emergency heat relay if equipped.

NOTE: For total and proper control using DDC, a

total of 7 controlled outputs are required (6 if

no ventilation system is installed). For proper

system operation under Emergency Heat

conditions where the compressor needs to be

deactivated, the B-W2-E outputs need to be

energized. Removing the Y (compressor) signal

alone turns the compressor off, but does not

activate the additional circuitry embedded in

the heat pump for proper and complete

operation.

TABLE 4

WALL THERMOSTAT

tatsomrehT serutaeFtnanimoderP

940-3048)083-39F1(

taeh.gts2;looc.gts2cinortcelEelbammargorP

revoegnahclaunaMrootuA

250-3048taeh.gts3;looc.gts2cinortcelEelbammargorP

revoegnahclaunaMrootuA

START UP

These units require R-410A refrigerant & Polyol Ester oil.

APPLICATION:

1. Use separate service and manufacturing equipment

to avoid cross contamination of oil and refrigerants.

2. Use recovery equipment rated for R-410A

refrigerant.

3. Use manifold gauges rated for R-410A (800 psi/250

psi low).

4. R-410A is a binary blend of HFC-32 and HFC-125.

5. R-410A is nearly azeotropic - similar to R-22 and

R-12. Although nearly azeotropic, charge with

liquid refrigerant.

6. R-410A operates at 40-70% higher pressure than

R-22, and systems designed for R-22 cannot

withstand this higher pressure.

7. R-410A has an ozone depletion potential of zero,

but must be reclaimed due to its global warming

potential.

8. R-410A compressors use Polyol Ester oil.

9. Polyol Ester oil is hygroscopic; it will rapidly

absorb moisture and strongly hold this moisture in

the oil.

10. A liquid line dryer must be used - even a deep

vacuum will not separate moisture from the oil.

11. Limit atmospheric exposure to 15 minutes -

MAXIMUM.

12. If compressor removal is necessary, always plug

compressor immediately after removal. Purge with

small amount of nitrogen when inserting plugs.


START UP CONT’D.

SAFETY PRACTICES:

1. Never mix R-410A with other refrigerants.

2. Use gloves and safety glasses, Polyol Ester oils can

be irritating to the skin, and liquid refrigerant will

freeze the skin.

3. Never use air and R-410A to leak check; the

mixture may become flammable.

4. Do not inhale R-410A – the vapor attacks the

nervous system, creating dizziness, loss of

coordination and slurred speech. Cardiac

irregularities, unconsciousness and ultimate death

can result from breathing this concentration.

5. Do not burn R-410A. This decomposition produces

hazardous vapors. Evacuate the area if exposed.

6. Use only cylinders rated DOT4BA/4BW 400.

7. Never fill cylinders over 80% of total capacity.

8. Store cylinders in a cool area, out of direct sunlight.

9. Never heat cylinders above 125°F.

10. Never trap liquid R-410A in manifold sets, gauge

lines or cylinders. R-410A expands significantly at

warmer temperatures. Once a cylinder or line is full

of liquid, any further rise in temperature will cause

it to burst.

IMPORTANT INSTALLER NOTEFor improved start-up performance, wash the indoor coil

with a dish washing detergent.

PRESSURE SERVICE PORTSR-410A requires high pressure hose connections and

gauges. High and Low pressure service ports are

installed on all units so that the system operating

pressures can be observed. Pressure tables can be found

later in the manual covering all models on both cooling

and heating cycles. It is imperative to match the correct

pressure table to the unit by model number.

HIGH & LOW PRESSURE SWITCHAll models are supplied with a remote reset high and low

pressure switch. If tripped, this pressure switch may be

reset by turning the thermostat off then back on again.

High/Low Pressure control provides protection for the

compressor. In the event system pressures go above 540

PSI or below 35 PSI, in either cooling or heating mode,

the compressor will be stopped. This will activate the

“L” terminal of the low voltage terminal strip. This

terminal can be used for remote indication of a pressure

lockout. The lockout circuit will hold compressor off

line. When the system problem is corrected, the unit

operation can be restored by turning the main power

supply off and then back on, or reset the room thermostat.

The low pressure control has a bypass to eliminate

nuisance lockout on cold start up.

The bypass timer should be set to 200 seconds, and this

is to assure there is no nuisance tripping of the low-

pressure control during startup in heating mode under

cold weather conditions. See Figure 10:

FIGURE 11

LOW PRESSURE CONTROL BYPASS TIMER

THREE PHASE SCROLL COMPRESSORSTART UP INFORMATIONScroll compressors, like several other types of

compressors, will only compress in one rotational

direction. Direction of rotation is not an issue with

single phase compressors since they will always start

and run in the proper direction.

However, three phase compressors will rotate in either

direction depending upon phasing of the power. Since

there is a 50-50 chance of connecting power in such a

way as to cause rotation in the reverse direction,

verification of proper rotation must be made. All three

phase units incorporate a phase monitor to ensure proper

field wiring. See the “Phase Monitor” section later in

this manual.

Verification of proper rotation must be made any time a

compressor is changed or rewired. If improper rotation

is corrected at this time there will be no negative impact

on the durability of the compressor. However, reverse

operation for over one hour may have a negative impact

on the bearing due to oil pump out.

NOTE: If compressor is allowed to run in reverse

rotation for several minutes, the compressor’s

internal protector will trip.

All three phase ZR3 compressors are wired identically

internally. As a result, once the correct phasing is

determined for a specific system or installation,

connecting properly phased power leads to the same

Fusite terminal should maintain proper rotation

direction.


Verification of proper rotation direction is made by

observing that suction pressure drops and discharge

pressure rises when the compressor is energized. Reverse

rotation also results in an elevated sound level over that

with correct rotations, as well as, substantially reduced

current draw compared to tabulate values.

The direction of rotation of the compressor may be

changed by reversing any two line connections to the unit.

PHASE MONITORAll units with three phase compressors are equipped with

a 3 phase line monitor to prevent compressor damage due

to phase reversal.

The phase monitor in this unit is equipped with two

LEDs. If the Y signal is present at the phase monitor and

phases are correct, the green LED will light. If phases are

reversed, the red fault LED will be lit and compressor

operation is inhibited.

If a fault condition occurs, reverse two of the supply leads

to the unit. Do not reverse any of the unit factory wires

as damage may occur.

SERVICE HINTS1. Caution homeowner to maintain clean air filters at all

times. Also, not to needlessly close off supply and

return air registers. This reduces airflow through the

system, which shortens equipment service life as well

as increasing operating costs.

2. Switching to heating cycle at 75° F or higher outside

temperature may cause a nuisance trip of the remote

reset high pressure switch. Turn thermostat off then

on to reset the high pressure switch.

3. The heat pump wall thermostats perform multiple

functions. Be sure that all function switches are

correctly set for the desired operating mode before

trying to diagnose any reported service problems.

4. Check all power fuses or circuit breakers to be sure

they are the correct rating.

5. Periodic cleaning of the outdoor coil to permit full

and unrestricted airflow circulation is essential.

SEQUENCE OF OPERATION

COOLING STAGE 1 – Circuit R-Y makes at thermostat

pulling in compressor contactor, starting the compressor

and outdoor motor. The G (indoor motor) circuit is

automatically completed on any call for cooling operation

or can be energized by manual fan switch on subbase of

constant air circulation.

COOLING STAGE 2 – Circuit R-Y1 makes at the

thermostat energizing the 2nd stage solenoid in the

compressor. Default position is not energized.

Compressor will run at low capacity until this solenoid is

energized.

HEATING STAGE 1 – A 24V solenoid coil on reversing

valve controls heating cycle operation. Two thermostat

options, one allowing “Auto” changeover from cycle to

cycle and the other constantly energizing solenoid coil

during heating season and thus eliminating pressure

equalization noise except during defrost, are to be used.

On “Auto” option a circuit is completed from R-W1 and

R-Y on each heating “on” cycle, energizing reversing

valve solenoid and pulling in compressor contactor

starting compressor and outdoor motor. R-G also make

starting indoor blower motor. Heat pump heating cycle

now in operation. The second option has no “Auto”

changeover position, but instead energizes the reversing

valve solenoid constantly whenever the system switch on

subbase is placed in “Heat” position, the “B” terminal

being constantly energized from R. A thermostat demand

for Stage 1 heat completes R-Y circuit, pulling in

compressor contactor starting compressor and outdoor

motor. R-G also make starting indoor blower motor.

HEATING STAGE 2 – Circuit R-Y2 makes at the

thermostat energizing the 2nd stage solenoid in the

compressor.

COMPRESSOR CURRENT & PRESSURECONTROL MODULE

The compressor control module monitors compressor

current and pressure and prevents internal overload trips

due to low voltage or extremely high ambient

temperatures by de-energizing the full capacity

compressor solenoid. The control monitors current to the

compressor and discharge pressure. If current is sensed

that is in excess of 93% of the compressor, maximum

continuous current rating or pressure is sensed greater

than 525 PSI, the compressor control module de-

energizes for a time as determined by the time

potentiometer on the compressor control module. This

will drop the current draw and pressure and allow the

compressor to run at 75 percent of capacity rather than

not at all. Once the time period has elapsed the full

capacity compressor solenoid will re-energize and try

again to run at full capacity. If the pressure or current is

exceeded again, the coil will again de-energize. This

sequence will repeat until the ambient temperature drops

or the line voltage increases enough that the trip values

are not exceeded.

The relay on the compressor control module is a single

pole double throw relay. The full capacity compressor

solenoid connects to the common terminal of the relay.

Once current is sensed by the compressor control module,

the relay closes and the second stage cooling call (if

present) is sent to the full capacity compressor solenoid.

This sequence prevents damage to the full capacity

compressor solenoid by ensuring that the solenoid is not

energized when the compressor is not running. A brief

time delay in this sequence also prevents locked rotor

amperage during start-up from tripping the device and

engaging the time delay period.


DEFROST CYCLE

The defrost cycle is controlled by temperature and timeon the solid state heat pump control. See Figure 12.

When the outdoor temperature is in the lower 40° Ftemperature range or colder, the outdoor coiltemperature is 32° F or below. This coil temperature issensed by the coil temperature sensor mounted near thebottom of the outdoor coil. Once coil temperaturereaches 30° F or below, the coil temperature sensorsends a signal to the control logic of the heat pumpcontrol and the defrost timer will start.

After 60 minutes at 30° F or below, the heat pumpcontrol will place the system in the defrost mode.

During the defrost mode, the refrigerant cycle switchesback to the cooling cycle, the outdoor motor stops,electric heaters are energized, and hot gas passingthrough the outdoor coil melts any accumulated frost.When the temperature rises to approximately 57° F, thecoil temperature sensor will send a signal to the heatpump control which will return the system to heatingoperations automatically.

If some abnormal or temporary condition such as a highwind causes the heat pump to have a prolonged defrostcycle, the heat pump control will restore the system toheating operation automatically after 10 minutes.

The heat pump defrost control board has an option of30, 60 or 90-minute setting. All models are shippedfrom the factory on the 60-minute pin. If specialcircumstances require a change to another time, removethe wire from the 60-minute terminal and reconnect tothe desired terminal. The manufacturer'srecommendation is for 60-minute defrost cycles. Referto Figure 12.

There is a cycle speed up jumper on the control. Thiscan be used to reduce the time between defrost cycleoperation without waiting for time to elapse.

Use a small screwdriver or other metallic object, oranother 1/4 inch QC, to short between the SPEEDUPterminals to accelerate the HPC timer and initiatedefrost.

Be careful not to touch any other terminals with theinstrument used to short the SPEEDUP terminals. Itmay take up to 10 seconds with the SPEEDUP terminalsshorted for the speedup to be completed and the defrostcycle to start.

As soon as the defrost cycle kicks in remove theshorting instrument from the SPEEDUP terminals.Otherwise the timing will remain accelerated and runthrough the 1-minute minimum defrost length sequencein a matter of seconds and will automatically terminatethe defrost sequence.

There is an initiate defrost jumper (sen jump) on thecontrol that can be used at any outdoor ambient duringthe heating cycle to simulate a 0° coil temperature. Thiscan be used to check defrost operation of the unitwithout waiting for the outdoor ambient to fall into thedefrost region.

By placing a jumper across the SEN JMP terminals (a1/4 inch QC terminal works best) the defrost sensormounted on the outdoor coil is shunted out and willactivate the timing circuit. This permits the defrostcycle to be checked out in warmer weather conditionswithout the outdoor temperature having to fall into thedefrost region.

In order to terminate the defrost test the SEN JMPjumper must be removed. If left in place too long thecompressor could stop due to the high pressure controlopening because of high pressure condition created by

operating in the cooling mode withoutdoor fan off. Pressure will risefairly fast as there is likely noactual frost on the outdoor coil inthis artificial test condition.

There is also a 5-minute compressortime delay function built into theHPC. This is to protect thecompressor from short cyclingconditions. In some instances, it ishelpful to the service technician tooverride or speed up this timingperiod, and shorting out theSPEEDUP terminals for a fewseconds can do this.

FIGURE 12

DEFROST CONTROL BOARD


TROUBLESHOOTING

SOLID STATE HEAT PUMP CONTROLTROUBLESHOOTING PROCEDURE

1. Turn on AC power supply to indoor and outdoor

units.

2. Turn thermostat blower switch to fan on. The indoor

blower should start. (If it doesn’t, troubleshoot

indoor unit and correct problem.)

3. Turn thermostat blower switch to auto position.

Indoor blower should stop.

4. Set system switch to heat or cool. Adjust thermostat

to call for heat or cool. The indoor blower,

compressor, and outdoor fan should start.

NOTE: If there was no power to 24 volt transformer,

the compressor and outdoor fan motor will not

start for 5 minutes. This is because of the

compressor short cycle protection.

TABLE 5

TROUBLESHOOTING

MOTPMYS SESUACELBISSOP KCEHCOTTAHW RIAPERROKCEHCOTWOH

rosserpmoCtonseodrotcatnoc

rognitaeh(ezigrene.)gnilooc

gniriwtiucriclortnoC tinutanoitcennocRrofkcehCC-Rneewtebtlov42dna

taehrewopottinuroodtuootnoitcennocRnuR.lortnocpmup

tuokcolrosserpmoC .1

.2

neewtebV42rofkcehC.lortnocpmuptaehnoC-1L

hgihssorcakcehChctiwserusserp

.1

.2

tatsomrehtnrut,C-1LneewtebegatlovonfIerusserphgihteserotniaganodnaffo

.hctiwstonlliwdnaneposihctiwserusserphgihfI

.hctiwserusserphgihecalper,teser

elcyctrohsrosserpmoCnoitcetorp

C-CCneewtebV42rofkcehC.lortnocpmuptaehnoC-Ydna

pudeepsrepmuj,C-CCneewtebegatlovonfIdluohsrewopsdnoces01nihtiwdna,lanimret

pudeepsevomeR.C-CCneewtebraeppa.sdnoces01retfarepmuj

lortnocpmuptaeHevitcefed

elbissoprehtollakcehC.560-0012launaM.sesuac

.lortnocpmuptaehecalpeR

evitcefedrotcatnoC liocdetrohsroneporofkcehC.gnidniw

.rotcatnocecalpeR

tongnisahprewoPtcerroc

esahpnoDELderrofkcehC.)ylnostinuesahp3(rotinom

.tinuehtotsdaelrewopowthctiwS

rotomroodtuonaFnurtonseod

gnitaehrognilooc(gnirudtpecxe

.)tsorfed

evitcefedrotoM detrohsroneporofkcehC.gnidniwrotom

.rotomecalpeR

roticapacrotoMevitcefed

kcehC.gnitarroticapackcehC.roticapacdetrohsroneporof

.roticapacecalpeR


noyalernafssorcakcehC.)CN-moC(lortnocpmuptaeh

.lortnocpmuptaehecalpeR

evlavgnisreveRezigrenetonseod

.)ylnognitaeh(

dionelosevlavgnisreveRevitcefedlioc

.liocdetrohsroneporofkcehC .liocdionelosecalpeR


C-VRneewtebV42rofkcehC.C-Bdna

.1

.2.gniriwtiucriclortnockcehC.lortnocpmuptaehecalpeR

otniogtonlliwtinUtsorfed

.)ylnognitaeh(

rorosneserutarepmeTlortnocpmuptaeh

evitcefed

erutarepmettcennocsiDrepmujdnadraobmorfrosnesdnaslanimretpudeepsssorca

sihT.slanimretpmujnesogottinuehtesuacdluohs

nihtiwelcyctsorfedahguorht.etunimeno

.1

.2

ecalper,elcyctsorfedhguorhtseogtinufI.rosneserutarepmet

,elcyctsorfedhguorhtogtonseodtinufI.lortnocpmuptaehecalper

emoctonlliwtinUtsorfedfotuo.)ylnognitaeh(

rorosneserutarepmeTlortnocpmuptaeh

evitcefed

pudeepsssorcarepmuJesuacdluohssihT.slanimret

tsorfedfotuoemocottinueht.etunimenonihtiw

.1

.2

ecalper,elcyctsorfedfotuosemoctinufI.rosneserutarepmet

,elcyctsorfedfotuoemoctonseodtinufI.lortnocpmuptaehecalper


CHECKING TEMPERATURE SENSOROUTSIDE UNIT CIRCUIT

1. Disconnect temperature sensor from board and from

outdoor coil.

2. Use an ohmmeter and measure the resistance of the

sensor. Also use ohmmeter to check for short or

open.

3. Check resistance reading to chart of resistance use

sensor ambient temperature. (Tolerance of part is

± 10%)

4. If sensor resistance reads very low, then sensor is

shorted and will not allow proper operation of the

heat pump control.

5. If sensor is out of tolerance, shorted, open, or reads

very low ohms then it should be replaced.

F R F R F R

-25.0

-24.0

-23.0

-22.0

-21.0

-20.0

-19.0

-18.0

-17.0

-16.0

-15.0

-14.0

-13.0

-12.0

-11.0

-10.0

-9.0

-8.0

-7.0

-6.0

-5.0

-4.0

-3.0

-2.0

-1.0

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15.0

16.0

17.0

18.0

19.0

20.0

21.0

22.0

23.0

24.0

196871

190099

183585

177318

171289

165487

159904

154529

149355

144374

139576

134956

130506

126219

122089

118108

114272

110575

107010

103574

100260

97064

93981

91008

88139

85371

82699

80121

77632

75230

72910

70670

68507

66418

64399

62449

60565

58745

56985

55284

53640

52051

50514

49028

47590

46200

44855

43554

42295

41077

25.0

26.0

27.0

28.0

29.0

30.0

31.0

32.0

33.0

34.0

35.0

36.0

37.0

38.0

39.0

40.0

41.0

42.0

43.0

44.0

45.0

46.0

47.0

48.0

49.0

50.0

51.0

52.0

53.0

54.0

55.0

56.0

57.0

58.0

59.0

60.0

61.0

62.0

63.0

64.0

65.0

66.0

67.0

68.0

69.0

70.0

71.0

72.0

73.0

74.0

39898

38757

37652

36583

35548

34545

33574

32634

31723

30840

29986

29157

28355

27577

26823

26092

25383

24696

24030

23384

22758

22150

21561

20989

20435

19896

19374

18867

18375

17898

17434

16984

16547

16122

15710

15310

14921

14544

14177

13820

13474

13137

12810

12492

12183

11883

11591

11307

11031

10762

75.0

76.0

77.0

78.0

79.0

80.0

81.0

82.0

83.0

84.0

85.0

86.0

87.0

88.0

89.0

90.0

91.0

92.0

93.0

94.0

95.0

96.0

97.0

98.0

99.0

100.0

101.0

102.0

103.0

104.0

105.0

106.0

107.0

108.0

109.0

110.0

111.0

112.0

113.0

114.0

115.0

116.0

117.0

118.0

119.0

120.0

121.0

122.0

123.0

124.0

10501

10247

10000

9760

9526

9299

9077

8862

8653

8449

8250

8057

7869

7686

7507

7334

7165

7000

6840

6683

6531

6383

6239

6098

5961

5827

5697

5570

5446

5326

5208

5094

4982

4873

4767

4663

4562

4464

4367

4274

4182

4093

4006

3921

3838

3757

3678

3601

3526

3452

TEMPERATURE F VS RESISTANCE R OF TEMPERATURE


REMOVAL OF FAN SHROUD

1. Disconnect all power to the unit.

2. Remove the screws holding both grilles, one on each

side of unit, and remove grilles.

3. Remove screws holding fan shroud to condenser and

bottom. Nine (9) screws.

4. Unwire condenser fan motor.

5. Slide complete motor, fan blade, and shroud

assembly out the left side of the unit.

6. Service motor/fan as needed.

7. Reverse steps to reinstall.

R-410A

REFRIGERANT CHARGE

The correct system R-410A charge is shown on the unit

rating plate. Optimum unit performance will occur with

a refrigerant charge shown on the unit serial plate.

If correct charge is in doubt, recover the refrigerant and

recharge per the charge on the unit rating plate. See

Table 7 for proper subcooling levels for evaluation of

proper charge.

TABLE 6

FAN BLADE DIMENSION

ledoM AnoisnemiD

LLA 0.1

COMPRESSOR SOLENOID

A nominal 24-volt direct current coil activates the

internal compressor solenoid. The input control circuit

voltage must be 18 to 28 volt ac. The coil power

requirement is 20 VA. The external electrical

connection is made with a molded plug assembly (PN

029-0311-00). This plug contains a full wave rectifier

to supply direct current to the unloader coil.

Compressor Solenoid Test Procedure – If it is

suspected that the unloader is not working, the

following methods may be used to verify operation.

1. Operate the system and measure compressor

amperage. Cycle the compressor solenoid on and

off at ten-second intervals. The compressor

amperage should go up or down at least 25 percent.

2. If step one does not give the expected results, shut

unit off. Apply 18 to 28 volt ac to the solenoid

molded plug leads and listen for a click as the

solenoid pulls in. Remove power and listen for

another click as the solenoid returns to its original

position.

3. If clicks can’t be heard, shut off power and remove

the control circuit molded plug from the compressor

and measure the solenoid coil resistance. The

resistance should be 32 to 60 ohms depending on

compressor temperature.

4. Next, check the molded plug.

Voltage check: Apply control voltage to the plug wires (18

to 28 volt ac). The measured dc voltage at the female

connectors in the plug should be around 15 to 27 vdc.

Resistance check: Measure the resistance from the end of

one molded plug lead to either of the two female

connectors in the plug. One of the connectors should read

close to zero ohms, while the other should read infinity.

Repeat with other wire. The same female connector as

before should read zero, while the other connector again

reads infinity. Reverse polarity on the ohmmeter leads and

repeat. The female connector that read infinity previously

should now read close to zero ohms.

Replace plug if either of these test methods does not

show the desired results.

FAN BLADE SETTING DIMENSIONS

Shown in Figure 13 are the correct fan blade setting

dimensions for proper air delivery across the outdoor

coil.

Any service work requiring removal or adjustment in

the fan and/or motor area will require that the

dimensions below be checked and blade adjusted in or

out on the motor shaft accordingly.

FIGURE 13

FAN BLADE SETTING


TABLE 9

MAXIMUM ESP OF OPERATION

deepShgiH

LLA 5.

TABLE 7 1

REFRIGERANT CHARGE - SUBCOOLING LEVEL

GNILOOC GNITAEH

ledoMdetaRwolfriA

DO59erutarepmeT

DO08erutarepmeT

DO74erutarepmeT

DO53erutarepmeT

1S3HC 0011 02-61 91-51 23-82 03-62

1S4HC 0051 22-81 12-71 42-02 91-51

1S5HC 0071 03-62 42-02 53-13 13-72

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjusts itself to maintainapproximately the same rate of indoor airflow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts.

1 Maximum ESP (inches WC) shown is with 2" thick disposable filter.

2 Rated CFM for 2nd Stage Operation – required for maximum performance rating.

3 1st Stage – the CFM output on 1st Stage Heating or Cooling.

4 Blower only CFM is the total air being circulated during continuous fan mode.

TABLE 8

INDOOR BLOWER PERFORMANCE

ledoMdetaR

PSE

1

xaMPSE

2

gnilooCegatSdn2gnitaeHegatSdn2

3

gnilooCegatSts1gnitaeHegatSts1

4

ylnOrewolBedoMtneVro

taeHcirtcelE

1S3HC 51. 5. 0011 008 008 0011

1S4HC 2. 5. 0051 0011 058 0071

1S5HC 2. 5. 0071 0031 058 0071

1 Expected subcooling levels during high capacity Stage 2 operation. Above subcooling levels are provided to troubleshoot low

charge or overcharged conditions. If charge is in doubt, evacuate and recharge the unit to the refrigerant charge listed on the

serial plate.


TABLE 10

PRESSURE TABLE

TABLE 11

PRESSURE TABLE

GNILOOCYTICAPACHGIH

LEDOMRIANRUTER

ERUTAREPMETERUSSERP 57 oF 08 oF 58 oF 09 oF 59 oF 001 oF 501 oF 011 oF 511 oF

1S3HC

BD°57BW°26

EDISWOLEDISHGIH

431892

431813

431933

531363

731883

831514

041544

341674

641015

BD°08BW°76

EDISWOLEDISHGIH

341603

341623

341843

441273

641893

841624

051654

351884

651325

BD°58BW°27

EDISWOLEDISHGIH

841713

841733

841063

941583

151214

351144

551274

851505

161145

1S4HC

BD°57BW°26

EDISWOLEDISHGIH

131803

331233

531653

731083

831604

931134

931654

041384

041905

BD°08BW°76

EDISWOLEDISHGIH

041613

241043

441563

641093

841614

941244

941864

051594

051225

BD°58BW°27

EDISWOLEDISHGIH

541723

741253

941873

151404

351134

451754

451484

551215

551045

1S5HC

BD°57BW°26

EDISWOLEDISHGIH

031633

131953

131183

231604

431034

531554

731284

831015

041835

BD°08BW°76

EDISWOLEDISHGIH

931543

041863

041193

141614

341144

441764

641494

841325

051255

BD°58BW°27

EDISWOLEDISHGIH

441753

541183

541504

641134

841654

941384

151115

351145

551175

GNILOOCYTICAPACWOL FEERGEDLIOCROODTUOGNIRETNEERUTAREPMETRIA

LEDOMRIANRUTER

ERUTAREPMETERUSSERP 57 oF 08 oF 58 oF 09 oF 59 oF 001 oF 501 oF 011 oF 511 oF

1S3HC

BD°57BW°26

EDISWOLEDISHGIH

931952

041482

141803

241333

341953

541583

741014

941834

151464

BD°08BW°76

EDISWOLEDISHGIH

941662

051192

151613

251243

351863

551593

751124

951944

161674

BD°58BW°27

EDISWOLEDISHGIH

451572

551103

651723

751453

851183

061904

261634

561564

761394

1S4HC

BD°57BW°26

EDISWOLEDISHGIH

731182

731103

931323

041543

141073

341493

441914

641744

741574

BD°08BW°76

EDISWOLEDISHGIH

641882

741903

941133

051453

151973

351404

451034

651854

751784

BD°58BW°27

EDISWOLEDISHGIH

151892

251023

451343

551663

651293

851814

951544

161474

261405

1S5HC

BD°57BW°26

EDISWOLEDISHGIH

631392

731613

931043

141463

241983

341314

441934

541464

541984

BD°08BW°76

EDISWOLEDISHGIH

541003

741423

941943

151373

251993

351424

451054

551674

551205

BD°58BW°27

EDISWOLEDISHGIH

051113

251533

451163

651683

751314

851934

951664

061394

061025

Low side pressure ± 2 PSIG

High side pressure ± 5 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge

being in the system, the charge should be removed, system evacuated and recharged to serial plate instruction.

Low side pressure ± 2 PSIG

High side pressure ± 5 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge

being in the system, the charge should be removed, system evacuated and recharged to serial plate instruction.


TA

BL

E 1

2

PR

ES

SU

RE

TA

BL

E

TA

BL

E 1

3

PR

ES

SU

RE

TA

BL

E

GNI

TA

EH

YTI

CA

PA

CH

GIH

FE

ER

GE

DLI

OC

RO

ODT

UO

GNI

RET

NE

ER

UTA

RE

PM

ETRI

A

LE

DO

MRI

AN

RUT

ER

ER

UTA

RE

PM

ETE

RU

SS

ER

P0o F

5o F01

o F51

o F02

o F52

o F03

o F53

o F04

o F54

o F05

o F55

o F06

o F56

o F

S3H

C°07

EDI

SW

OLE

DIS

HGI

H44092

64592

05003

45303

95403

46903

17813

87033

68643

59463

501783

611314

721244

931574

S4H

C°07

EDI

SW

OLE

DIS

HGI

H45082

55182

65382

65482

75882

16492

66403

47713

38433

49353

801673

321204

141134

061364

S5H

C°07

EDI

SW

OLE

DIS

HGI

H44272

64772

94482

35392

75403

36613

86033

57643

28463

09383

99404

801724

911254

921874

GNI

TA

EH

YTI

CA

PA

CW

OL

FE

ER

GE

DLI

OC

RO

ODT

UO

GNI

RET

NE

ER

UTA

RE

PM

ETRI

A

LE

DO

MRI

AN

RUT

ER

ER

UTA

RE

PM

ETE

RU

SS

ER

P0o F

5o F01

o F51

o F02

o F52

o F03

o F53

o F04

o F54

o F05

o F55

o F06

o F56

o F

S3H

C°07

EDI

SW

OLE

DIS

HGI

H64572

94082

35382

75382

26682

86192

57892

38803

19023

101433

111053

221963

431983

641214

S4H

C°07

EDI

SW

OLE

DIS

HGI

H06072

56172

36172

16372

26872

46482

07392

77303

78613

99133

311843

031763

941883

071114

S5H

C°07

EDI

SW

OLE

DIS

HGI

H85572

65472

65572

85972

06582

46492

07603

77123

58833

59853

601183

911604

331434

841564

Lo

w s

ide

pre

ssu

re ±

2 P

SIG

Hig

h s

ide

pre

ssu

re ±

5 P

SIG

Ta

ble

s a

re b

ase

d u

po

n r

ate

d C

FM

(a

irflo

w)

acro

ss t

he

eva

po

rato

r co

il.

If t

he

re is a

ny d

ou

bt

as t

o c

orr

ect

op

era

tin

g c

ha

rge

be

ing

in

th

e s

yste

m,

the

ch

arg

e s

ho

uld

be

re

mo

ve

d,

syste

m e

va

cu

ate

d a

nd

re

ch

arg

ed

to

se

ria

l p

late

in

str

uctio

n.

Lo

w s

ide

pre

ssu

re ±

2 P

SIG

Hig

h s

ide

pre

ssu

re ±

5 P

SIG

Ta

ble

s a

re b

ase

d u

po

n r

ate

d C

FM

(a

irflo

w)

acro

ss t

he

eva

po

rato

r co

il.

If t

he

re is a

ny d

ou

bt

as t

o c

orr

ect

op

era

tin

g c

ha

rge

be

ing

in

th

e s

yste

m,

the

ch

arg

e s

ho

uld

be

re

mo

ve

d,

syste

m e

va

cu

ate

d a

nd

re

ch

arg

ed

to

se

ria

l p

late

in

str

uctio

n.

note t r-410a h p r s · attention to note 8 of table 310 regarding ampacity adjustment factors...

Documents