12.3 Specification
Heat pump type WPF 20 WPF 27 WPF 40 WPF 52 WPF 66
Part no. 223374 223375 223376 223377 223378
Type Compact
Operating mode Mono-mode
| dual mode alternative | dual-mode parallel
Dimension, weights, materials
Dimensions H/W/D mm 1154 x 1242 x 860
Weight: kg 345 367 415 539 655
Pipe connector WNA
1)
inch G 2" (male)
Pipe connector WQA
1)
inch G 2" (male)
Corrosion protection casing zinc-plated / painted
Evaporator material 1.4401/Cu
Condenser material 1.4401/Cu
Refrigerant
Type R410A
Fill weight kg 6.0 7.2 10 12 14.5
Permissible operating pressure MPa 4.3 4.3 4.3 4.3 4.3
Performance details heat pump (DIN EN 14511)
Heat output at B0/W35
2)
kW 21.88 29.69 45.70 55.83 69.04
Refrigerating capacity
at B0/W35
2
)
kW 17.35 23.57 36.28 44.22 54.60
Power consumption
at B0/W35
2
)
kW 4.53 6.12 9.42 11.61 14.44
Coefficient of Performance
at B0/W35
2
)
4.83 4.85 4.85 4.81 4.78
Heating water temperature spread at
nominal flow rate
at B0/W35
2
)
K5
Heat transfer medium WQA
Heat transfer medium Brine made from water with 33 % by vol. ethylene glycol
Brine volume l 11.2 13.0 16.6 20.2 23.8
Flow rate min. m
3
/h 5.0 7.0 10.5 13.0 16.1
Permissible operating pressure MPa 0.3
Internal pressure differential
3)
hPa 150 140 160 150 160
Heat transfer medium WNA
Heat transfer medium Softened water (see chapter 8.4)
Nominal flow rate to DIN EN 14511 'T = 5 K m
3
/h 3.7 5.0 7.5 9.2 11.51
Flow rate at 'T = 10 K m
3
/h 1.85 2.5 3.75 4.6 5.76
Permissible operating pressure MPa 0.3
Pressure differential of the WPF at nominal flow rate hPa 60 52 80 60 80
Temperature limits in use
WQA min./WQA max. °C –5 / 20, briefly (max. 30 min) source temperatures up to 40 °C are permissible
WNA min./WNA max. °C 15 / 60
Electrical details
Fuses
Mains compressor
A 35 gl 35 gl 35 gl 50 gl 50 gl
Control circuit
A 16 gl
Cable cross-section
5)
Mains compressor
mm² 5 x 6 5 x 6 5 x 6 5 x 10 5 x 10
Control circuit
mm² 3 x 1.5
Protection EN 60529 (DIN VDE 0470) IP 34 D
Voltage / frequency compressor V/Hz 3/PE~400/50
Voltage / frequency compressor V/Hz 1/N/PE ~400/50
Starting current A 55 60 60 65 80
Max. compressor power consumption
6
kW 8.2 10.7 17.4 20.5 25.5
Sound power level
7)
dB(A) 54 55 56 58 60
1)
WQA = heat source system
WNA = heat consumer system (on the heating side)
2)
B0/W35 = brine inlet temperature 0 °C, heating flow 35 °C
3)
At B0/W35
4)
Values refer to straight lines. Bends, valves, heat meters etc. must also be taken into account.
5)
Maintain the minimum cross-sections to ensure the equipment safety.
6)
At B20/W60
7)
At B10/W50 to DIN EN 14511
INSTALLATION
SPECIFICATION
23 | WPF 20/27/40/52/66 www.stiebel-eltron.com
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