rkh

Sheet metal supporting frame and double shell curtain panels externally pre-painted, fully removable with average 20 mm thick internal thermal and acoustic insulation.High efficiency aluminium plated heat recovery, Eurovent certified, of static type with aluminium plate, and airflows separated by special seals.G4 efficiency class air filters, easily removable from every side (bottom, side, top) allowing their periodic cleaning; as an option, M6-F7-F8 efficiency class filters are available.Supply and exhaust centrifugal double suction fans, with electric motor directly coupled for more speeds, mounted on special supports.The unit is complete of electrical terminal box fitted with relay board, to aid the electrical connections and fan control.Aluminium condensate drain tray, with discharge from the bottom side.

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TECHNICAL FEATURES

>70%EFFICIENCY

PARTIAL OUTSIDE

V

H

HEAT RECOVERY UNIT high efficiencyfrom 400 to 5.700 m³/h

INSIDE

ERP 2015

46 Heat pump - Heat recovery unit

rkhHEAT RECOVERY UNIT

Pre-or post-heating elements complete with electrical power board

Direct driven 3 speed fans

Round adapter for circular duct BCCPre or post electric heater SKEWater cooling/heating section SAFDirect expansion section SEDAdjusting damper SKRFlexible connection GATRoof cover TPRClass M6 compact filter FC6Class F7 compact filter FC7Class F8 compact filter FC8Brushless EC engine DDBFan speed control for EC engines RDEExternal hood with wire mesh CFA Humidification/adiabatic cooling section HCPSolenoid valve VSAExternal by-pass for free-cooling CDM

Supports H=180 mm PD23 step fan speed control CVUControl panel PCRRemote temperature sensor for PCR NTCElectronic control LCE3 way valve with actuator V33Multifunction electronic control LC2Continuous modulation of speed MCVFilters differential pressure switch PSTDOn/off damper actuator SSERoom hygrostat HASDuctable hygrostat HCSAntifreeze thermostat TEGDifferential pressure transducer DPSDuct-type CO2 transducer AQS

ACCESSORIES

High efficiency aluminium heat exchanger

47Heat pump - Heat recovery unit

MODELSHEAT RECOVERY UNITrkh

rkh Fan speed 19 25 30 40 60

AirflowMax

m3/h1000 1800 3000 3900 4800

Med 900 1550 2600 - -Min 820 1060 2150 3000 4100

External Static PressureMax

Pa194 158 192 143 170

Med 168 116 119 - -Min 132 81 82 79 125

1m sound pressure levelMax

dB(A)52,0 56,0 56,0 60,0 64,0

Med 50,0 53,0 54,0 - -Min 45,0 48,0 48,0 53,0 56,0

Nom motor power W 2 x 420 2 x 420 2 x 550 2 x 750 2 x 1500

Maximum total current A 2 x 2,40 2 x 3,30 2 x 5,50 2 x 3,30 2 x 5,00

Max. total power absorbed kW 2 x 0,56 2 x 0,70 2 x 1,20 2 x 1,89 2 x 3,28

Specific fan power W/(m3/s) 1404 1120 1140 1132 1420

2009/125/EC ErP Compliance - 2015 2015 2015 2015 2015

Fan speed n° 3 3 3 2 2

Min degree of Protection IP 44 IP 44 IP 44 IP 55 IP 55

Min temperature class F F F F F

Power supply V-Ph-Hz 230-1-50 400-3+N-50

Efficiency (1)Max

%70,9 72,9 72,5 72,1 72,1

Med 71,4 73,6 73,2 - -Min 71,8 75,4 74,1 73,4 72,9

Recovered heating capacity (1)Max

kW6,4 11,8 19,5 25,2 31,1

Med 5,8 10,2 17,1 - -Min 5,3 7,2 14,3 19,8 26,8

Supply temperature (1)Max

°C10,2 10,7 10,6 10,5 10,5

Med 10,3 10,9 10,8 - -Min 10,5 11,3 11,0 10,8 10,7

Efficiency class according to UNI EN 13053. Nom H3 H3 H3 H3 H3

Water cooling accessory SAF

Rows 3 3 3 3 3

Air pressure drop Max Pa 49 53 77 80 80

Total cooling capacity (2) Max kW 8,20 14,0 18,6 24,0 29,9

Sensible cooling capacity (2) Max kW 3,94 7,04 9,79 12,7 16,2

Supply temperature (2) Max °C 16,8 16,8 18,6 18,6 18,3

Water flow rate (2) Max m3/h 1,40 2,39 3,19 4,13 5,11

Water pressure drop (2) Max kPa 6 16 27 29 12

Electric pre or post-heating accessory SKE

Stages 1 1 1 1 1

Heating capacity kW 3,00 4,50 9,00 12,0 12,0

∆T air side Max °C 8,8 7,4 8,8 9,0 7,4Pressure drop Max Pa 4 4 8 8 9Power supply V-Ph-Hz 400-3+N-50

High efficiency filters

FC6 Pressure drop Max Pa 48 48 69 80 62

FC7 Pressure drop Max Pa 113 114 163 190 146

FC8 Pressure drop Max Pa 156 160 228 283 203

Round adapter for circular duct BCC

Diameter mm 315 355 400 450 630

(1) Outdoor air -7°C 90% RH, ambient air 20°C 50% RH(2) Outdoor air 32°C 50% RH, ambient air 26°C 50% RH, water inlet 7°C outlet 12°C

48 Heat pump - Heat recovery unit

PERFORMANCEHEAT RECOVERY UNIT

rkh

Air flow (m3/h)

E.S.

P. (P

a)

66,0

67,0

68,0

69,0

70,0

71,0

72,0

73,0

74,0

0

50

100

150

200

250

300

350

400 600 800 1000 1200 1400 1600 1800

maxmin

med

eff %

Effici

ency

(%)

performance

Air flow (m3/h)

P.D

. (Pa

)

0

50

100

150

200

250

300

400 600 800 1000 1200 1400 1600 1800

AF

F

6

fc8

fc7

saf

ske

fc6

components pressure drop

RKh

19

Air flow (m3/h)

E.S.

P. (P

a)

70,0

71,0

72,0

73,0

74,0

75,0

76,0

0

50

100

150

200

250

300

350

400

450

500

1500 2000 2500 3000 3500 4000 4500

max

min

eff %

Effici

ency

(%)

performance

Air flow (m3/h)

P.D

. (Pa

)

0

50

100

150

200

250

300

1500 2000 2500 3000 3500 4000 4500

fc8

fc7

saf

ske

fc6

components pressure drop

RKh

40

Air flow (m3/h)

E.S.

P. (P

a)

70,0

71,0

72,0

73,0

74,0

75,0

76,0

77,0

78,0

0

50

100

150

200

250

300

350

400

500 700 900 1100 1300 1500 1700 1900 2100 2300

maxmin

med

eff %

Effici

ency

(%)

performance

Air flow (m3/h)

E.S.

P. (P

a)

70,0

71,0

72,0

73,0

74,0

75,0

76,0

0

50

100

150

200

250

300

350

400

450

1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600

max

min

med

eff %

Effici

ency

(%)

performance

Air flow (m3/h)

P.D

. (Pa

)

0

50

100

150

200

500 700 900 1100 1300 1500 1700 1900 2100 2300

fc8

fc7

saf

ske

fc6

components pressure drop

Air flow (m3/h)

P.D

. (Pa

)

0

50

100

150

200

250

300

1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600

fc8

fc7

saf

ske

fc6

components pressure drop

RKh

25RK

h 30

49Heat pump - Heat recovery unit

PERFORMANCErkhHEAT RECOVERY UNIT

DIMENSIONS AND WEIGHTS

Air flow (m3/h)

performance components pressure drop

E.S.

P. (P

a)

0

50

100

150

200

250

300

350

400

450

500

1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

max

min

EFF %

76,0

75,0

74,0

73,0

72,0

71,0

70,0

Air flow (m3/h)

P.D

. (Pa

)

0

50

100

150

200

250

1500 2000 2500 3000 3500 4000 4500 5000

fc8

fc7

saf

ske

fc6

RKh 60

RKH SWL [dB]octave band [Hz] SWL SPL supply SPL return SPL outside

1 m 5 m 10 m 1 m 5 m 10 m 1 m 5 m 10 m

63 125 250 500 1000 2000 4000 8000 dB dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A)

19 84,6 78,0 82,8 74,6 75,0 74,6 71,6 65,6 88 81 66 55 50 65 54 49 52 41 36

25 95,6 80,4 84,1 75,0 77,3 76,9 73,7 67,5 96 83 68 57 52 66 55 50 55 44 39

30 96,6 81,3 85,2 76,1 78,2 78,0 74,6 68,0 97 84 69 58 53 66 55 50 56 45 40

40 103,4 83,2 88,7 78,6 80,0 79,9 77,6 72,6 104 87 72 61 56 69 58 53 59 48 43

60 106,8 86,5 92,2 82,1 83,2 83,1 81,4 76,1 107 90 74 64 59 71 61 56 62 52 47

SPLSupply

SPLexternal

SPLReturn

The table lists the sound power values (SWL) in octave bands and totals; it also indicates the values of sound pressure level (SPL) at 1 m, 5 m and 10 m at supply, return and at the outside of the unit.All values refer to the operation of the ducted unit at FULL speed and at the nominal flow rate.

NOISE LEVELS

RKh 19 25 30 40 60A mm 1450 1700 1700 1700 1900

B mm 900 1230 1230 1230 1450

C mm 470 490 530 630 755

D mm 100 150 150 150 200

L mm 240 240 339 339 403

H mm 270 270 297 297 350

L1 mm 337 502 502 502 615

H1 mm 327 347 387 487 615

Weight kg 110 155 170 200 300

Horizontal unit Vertical unit

CDM

CD

L

H

L1

H1

A

BU

CDM

90A

BCDH

LL1

H1

U

Efficiency (%)

50 Heat pump - Heat recovery unit

components pressure drop

CONFIGURATIONS AND CONTROLS rkhHEAT RECOVERY UNIT

• Orientation Rkh (Horizontal version)

• Orientation Rkh (Vertical version)

CVU PCR LCE LC2Manual selection of 3 speed · · · ·Automatic/manual selection of speed · · ·Modulating fan management MCV ·EC fans management DDB ·Manual ON-OFF · · · ·Cool/change over valve management SAF+V33 · · ·Heat valve management SAF+V33 · · ·Cold/change over pump management SAF ·Heat pump management SKW ·Direct expansion coil management (0..10V) SED ·Defrost recovery management ·Water coil anti-freeze management · ·Antifreeze thermostat management TEG+SKR+SSE ·ON-OFF electric heater management SKE · · ·Remote probe management NTC ·Filter pressure switch management PSTD · ·Management of ventilation with CO2 probe AQS ·Management of ventilation with one or two pressure sensors DPS ·Free-cooling damper management CDM · ·Management of mixing chamber MS3 ·Management of mixing chamber with CO2 probe AQS+MS3 ·Management of motorized dampers SKR+SSE ·

Management of humidification HCS+HCP+VSA ·HAS+HCP+VSAManagement of Boost by keyboard ·Management of adiabatic cooling HCP+VSA ·Alarms management · ·Post ventilation · · ·Weekly programming · ·Remote ON-OFF · ·Digital input for PIR occupancy ·Digital input for fire alarm ·Mode change (hot/cold) from digital input · ·Minimum thermal hot water temperature ·Remote display with internal sensor · · ·BMS Modbus RS485 protocol · ·Reference diagram 1 2 3 4

exhaust

freshair

insideoutside TyPe A

M90

R90

supply

return

E90

A90

supply

return

exhaust

freshair

TyPe A

M90E90

supply

return

Exhaust

freshair

INside outsideTyPe B

M90

R90

E90

A90

Espulsione

exhaust

return

supply

TyPe B

E90

freshair

M90

51Heat pump - Heat recovery unit