10 x Technical data
139
FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
M1F Motor upper fan PHC1 Optocoupler input circuit
M2F Motor lower fan Q1DI Contactor
MRM, MRC, MRW Magnet relay Q1L Thermal connector Backup Heater (BH)
PCB1...PCB2 Conductor board Q2L...Q3L Thermal connector Booster Heater (EHS)
PM1 Supply module R1T Temperature sensor (heat exchanger overflow water)
PS Switching power supply R2T
Temperature sensor (Backup Heater (BH) overflow
water)
Q1DI Contactor R3T Temperature sensor Liquid side refrigerant)
Q1L...Q2L Thermal circuit breaker R4T Temperature sensor (heat exchanger inlet water)
R1...R4 Resistance R5T Temperature sensor (water heating)
R1T Temperature sensor (air) S1L Current switch
R2T Temperature sensor (discharge) S1S Relay (ROTEX Solaris connection set)
R3T Temperature sensor (inlet pipe) SS2 DIP switch (hot water storage tank, room thermostat)
R4T Temperature sensor (heat exchanger) TR1 Transformer 24 V for conductor board
R5T Temperature sensor (heat exchanger middle) V1S...V2S Suppression of sparks
R6T Temperature sensor (Liquid side) X1A...X517A Plug connection
R7T Temperature sensor (Cooling fin on model W1) X1M...X4M Terminal block
R10T Temperature sensor (Cooling fin on model V3)
RC Switching circuit signal receiver
S1...S102 Plug connection
S1NPH High pressure sensor
S1PH High pressure switch
SS2 DIP switch
SW1 Pushbutton enforced cooling
SW4 DIP switch
TC Switching circuit signal transmission (on model V3)
V1R Voltage module (on model V3)
V1R...V2R Voltage module (on model W1)
V2R...V3R Diode module (on model V3)
V3R Diode module (on model W1)
V1T Insulated bipolar transistor (on model V3)
X1M...X3M Terminal block
X1Y Plug connection
Y1E Electric expansion valve
Y1S 4-W solenoid valve
Y3S Solenoid valve (on model W1)
Z1C-Z9C Noise filter
Z1F-Z4F Noise filter
Tab. 10-7 Key names for connection and circuit diagrams
Key names
External units Explanation Internal units Explanation
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