Technical specifications
3X400 V
F1355-28Model
Output data according to EN 14511 nominal (50 Hz)
0/35
20.77kWHeating capacity (P
H
)
4.56kWSupplied power (P
E
)
4.55-COP
0/45
19.87kWHeating capacity (P
H
)
5.54kWSupplied power (P
E
)
3.59-COP
10/35
26.68kWHeating capacity (P
H
)
4.76kWSupplied power (P
E
)
5.60-COP
10/45
25.71kWHeating capacity (P
H
)
5.84kWSupplied power (P
E
)
4.40-COP
Output data according to EN 14825
28kWP
designh
, 35 °C / 55 °C
5.4 / 4.2-SCOP cold climate, 35 °C / 55 °C
5.0 / 4.0-SCOP average climate, 35 °C / 55 °C
Energy rating, average climate
A++ / A++The product’s room heating efficiency class 35 °C / 55 °C
1)
A+++ / A+++Space heating efficiency class of the system 35 °C / 55 °C
2)
Electrical data
400V 3N ~ 50HzRated voltage
22.1A
rms
Max operating current, heat pump
3)
9.5 / 8.5A
rms
Max. operating current compressor EP14 / EP15
25ARecommended fuse rating
27.7A
rms
Starting current
-ohmMax permitted impedance at connection point
4)
6 – 360WTotal output, brine pumps
3)
5 – 174WTotal output, HM pumps
IP 21Enclosure class
Refrigerant circuit
R407C / R407CType of refrigerant EP14 / EP15
2.2 / 2.0kgFill amount EP14 / EP15
1,774GWP refrigerant
3.90 / 3.55tonCO
2
equivalent EP14 / EP15
3.2 (32 bar)MPaCut-out value pressostat HP
-0.7 (-7 bar)MPaDifference pressostat HP
0.15 (1.5 bar) / 0.08 (0.8 bar)MPaCut-out value, pressure switch LP EP14 / EP15
0.15 (1.5 bar) / 0.07 (0.7 bar)MPaDifference, pressure switch LP EP14 / EP15
0.13 (1.3 bar)MPaCut-out value, pressure transmitter LP
0.01 (0.1 bar)MPaDifference, pressure transmitter LP
Brine circuit
0.6 (6 bar)MPaMax system pressure brine
1.19l/sNominal flow
95kPaMax external avail. pressure at nominal flow
1.55l/sFlow at P
designh
80kPaExternal available pressure at P
designh
see diagram°CMin/Max incoming Brine temp
-12°CMin. outgoing brine temp.
Heating medium circuit
0.6 (6 bar)MPaMax system pressure heating medium
41Chapter 8 | Technical dataNIBE F1355
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