RKB

>50%

rowred

Heat recovery unit
from 100 to 5.400 m³/h

Sheet metal supporting frame and double shell curtain panels externally pre-painted, fully removable with 20 mm thick internal thermal and acoustic insulation.
Average efficiency static heat recovery, of the air-air type cross-flows with aluminium exchanger plates equipped with additional sealing; aluminium drain pan to collect the condensation, extended to the whole area dedicated to the thermal treatment. Cross-flow heat recovery unit certified by Eurovent according to UNI EN 308.
The unit comes without filters; optionally you can choose compact G4 filters 98 mm, or any combination of compact filters by type G4 48 mm, M6, F7, or F8, according to UNI EN 779:2012.
Filters can all be removed from the bottom of the unit.
Forward-curved blades centrifugal fans with double air inlet directly coupled with multi speed motors; the fans comply to the year 2013-2015 to the ErP directive 2009/125/EC, in accordance with the European regulation 327/2011. The unit comes complete with IP 56 electrical box and connection terminals for each fan.

  • G4 filter 98 mm thick G49
    G4 filter 48 mm thick G45
    High efficiency M6 filter FC6
    High efficiency F7 filter FC7
    High efficiency F8 filter FC8
    Unit conversion Kit from Horizontal to Vertical KVU
    External by-pass CDM
    Electric coil section SKE
    Water coil section SAF
    Adiabatic Cooler/Humidifier HCP
  • Roof coverage – Horizontal unit TPR
    Feet 180mm high (kit = 4 pieces) PD2
    3-position speed switch RCV
    3 step fan speed control CVU
    Control panel PCR
    Remote temperature sensor for PCR NTC
    Power relay board LVN
    Multi-function control panel LCE
    3-way modulating valve with actuator – SAF – V33
RKB 500 1000 2000 3200 4300
Airflow Max m³/h 500 1000 2000 3200 4300
Med 330 900 1500 2600
Min 220 800 1100 2100 3200
Static pressure (4) Max Pa 155 125 130 160 180
Med 100 105 115 150
Min 45 80 80 105 110
1 m sound pressure level Max dB(A) 51 52 58 59 62
Med 50 49 54 53
Min 44 45 42 51 55
Nom motor power W 2 x 60 2 x 147 2 x 420 2 x 550 2 x 750
Maximum total current A 2 x 0,70 2 x 1,40 2 x 3,80 2 x 5,40 2 x 3,30
Max. total power absorbed kW 2 x 0,22 2 x 0,27 2 x 0,80 2 x 1,20 2 x 1,89
Specific fan power (m³/s) 1019 720 1125 1170 1213
2009/125/EC ErP Compliance Free 2015 2015 2015 2015
Fan speed 3 3 3 3 2
Min degree of Protection IP 32 IP 44 IP 44 IP 44 IP 55
Min temperature class B F F F F
Power supply V-Ph-Hz 230-1-50 400-3-50
Efficiency (1) Max % 58,7 56,4 50,0 53,8 54,6
Med 61,6 57,2 51,7 55,5
Min 64,3 58,0 53,5 57,1 56,9
Recovered power (1) Max kW 2,40 4,70 8,30 14,3 19,5
Med 1,70 4,30 6,40 12,0
Min 1,20 3,90 4,90 10,0 15,1
Supply temperature (1) Max °C 8,3 7,8 6,3 7,2 7,4
Med 9,0 8,0 6,7 7,6
Min 9,6 8,2 7,1 8,0 7,9
Efficiency class according to UNI EN 13053 Max H4 H4 H5 H5 H5
SAF water cooling section
Total cooling capacity (2) kW 3,10 6,00 11,2 19,2 25,4
Sensible cooling capacity (2) Max kW 1,86 3,60 6,72 11,5 15,2
Supply temperature (2) Max °C 17,9 18,4 19,4 18,7 18,8
Heating capacity (3) Max kW 6,30 12,2 23,7 37,9 53,9
Supply temperature (3) Max °C 44,5 43,0 40,1 41,2 43,4
Water flow rate Max m³/h 0,53 1,03 1,91 3,29 4,37
Water side pressure drop Max kPa 11 17 11 29 22
Air pressure drop Pa 63 45 87 84 50
Coil rows Max 3 3 3 3 3
SKE electric heater for pre- or post-heating
Stages 1 1 1 1 1
Heating capacity Max kW 2,00 4,50 9,00 12,0 18,0
ΔT air side Max °C 11,8 13,2 13,2 11,8 13,2
Pressure drop Max Pa 5 5 13 12 9
Power supply V-Ph-Hz 230-1-50 400-3+N-50
High efficiency filters
G49  Pressure drop G4 Max Pa 35 48 66 85 56
G45  Pressure drop G4 Max Pa 50 69 95 122 81
FC6  Pressure drop  M6 Max Pa 78 108 149 191 127
FC7 Pressure drop F7 Max Pa 117 162 224 287 190
FC8  Pressure drop  F8 Max Pa 143 198 274 350 232

(1) External air Winter – 5°C, 80% RH ambient air at 20°C, 50% RH, Summer 32°C 50% RH, ambient air 26°C 50% RH
(2) Air outlet conditions of the recovery system, inlet water 7°C, outlet 12°C
(3) Air outlet conditions of the recovery system, inlet water 70°C, outlet 60°C
(4) Static pressure E.S.P. calculated with G49 mounted

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.

RKB

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)

500

78,6

79,4

77,6

69,0

70,4

71,4

66,9

62,2

84

77

63

52

46

60

49

43

51

40

34

1000

72,4

78,9

75,9

71,1

72,8

73,7

71,7

69,0

83

79

65

53

48

62

50

45

52

40

35

2000

90,7

82,9

90,1

79,4

78,6

79,5

79,3

75,5

94

87

72

61

56

69

58

53

58

47

42

3200

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

4300

95,4

89,0

92,5

87,7

81,5

82,6

83,5

79,0

99

91

76

65

60

72

61

56

62

51

46

RKB

500

1000

2000

3200

4300

P

mm

375

450

450

615

675

L

mm

400

700

700

700

850

H

mm

270

410

470

490

630

D

mm

200

315

355

450

500

WEIGHT SKE

kg

7

15

16

21

31

WEIGHT SAF

kg

9

20

21

25

40

WEIGHT HCP

kg

9

17

21

25

40

RKB

500

1000

2000

3200

4300

A

mm

750

900

1000

1300

1400

B

mm

750

900

1000

1300

1400

C

mm

295

410

470

530

705

D

mm

200

315

355

450

500

E

mm

145

205

235

265

352

F

mm

202

240

265

340

365

WEIGHT

kg

41

68

99

155

235

Drains

Inch

2 x 1/2″ F

2 x 1/2″ F

2 x 1/2″ F

2 x 1/2″ F

2 x 1/2″ F

H CDM

mm

75

75

100

150

175

RKB

RCV

CVU (*)

PCR (*)

LCE

Manual selection of 3 speed

Automatic/manual selection of speed

Manual ON-OFF

Cool/change over valve management

SAF+V33

Heat valve management

SAF+V33

Water coil anti-freeze management

ON-OFF electric heater management

SKE

Filter pressure switch management

Free-cooling damper management

CDM

Alarms management

Post ventilation

Weekly programming

Remote ON-OFF

Mode change (hot/cold) from digital input

Remote display with internal sensor

BMS Modbus RS485 protocol

Reference diagram
Click here
Click here
Click here
Click here

(*) to be combined with LVN.

Contact form

RKB