Riello NXHM - Technical Specifications

119
ENGLISH
L0
DC compressor inverter module fault
1. Check the Heat pump system pressure.
2. Check the phase resistance of compressor.
3. Check the U, V, W power line connection sequence between the inventer board
and the compressor.
4. Check the L1, L, L3 power line connection between the inventer board and the
Filter board.
5. Check the inventer board.
L1
DC bus low voltage protection (from in-
verter module mostly when compressor
running)
L2
DC bus high voltage protection from DC
driver
L4
MCE fault
L5
Zero speed protection
L7
Phase sequence fault
L8
Compressor frequency variation greater
than 15Hz within 1 second protection
L9
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from target frequency by more than
15Hz protection
14 TECHNICAL SPECIFICATIONS
14.1 General
Unit 18kW 22kW 26kW 30kW
Power supply 380-415V 3N~ 50Hz
Rated input kW 10,6 12,5 13,8 14,5
Rated Current A 16,8 19,6 21,6 22,8
Norminal capacity Refer to the technical data
Dimensions (W×H×D) [mm] 1129x1558x528
Packing (W×H×D) [mm] 1220x1735x565
Heat exchanger Plate heat exchanger
Electric heater 
Internal water volume l 3,5
Safety valve MPa 0,3
Filter mesh 60
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Pump
Type Fixed speed pump
Max. head m 12
Power input W 262
Expansion vessel
Volume l 8
Max. operating pressure MPa 1,0
Pre-charge pressure MPa 0,1
Weight
Net weight kg 177
Gross weight kg 206
Connections
:DWHULQOHWRXWOHW %63
Operation range - water side
Heating model °C +5~+60
Cooling model °C +5~+25
Operation range - air side
Heating model °C -25~+35
Cooling mode °C -5~+46
Domestic hot water °C -25~+43