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Cod. 1910000001165 - nv01
7.11
Electronic board
Description of electronic board inputs/outputs
KEY
BLUE
blue wire
BLK
black wire
BRN
brown wire
RED
red wire
WHT
white wire
Y/G
yellow/green wire
Inputs
HP-GND
high pressure
KEIN-GND
Unit remote activation
T3
heating element water temperature
probe
T1
external air temperature probe
T4
condenser temperature probe
HTP-GND
Thermostat with manual reset T 80°C
T2
heat pump water temperature probe
T5
gas return temperature probe
Outputs
OUT1-3
compressor switch-on enabling signal
OUT2
heating element switch-on enabling
signal
OUT5
fan switch-on enabling signal
(3.15A 250V T fuses)
The temperature of the boiler water detected by T2 sensor is mainly used
to control the heat pump.
The temperature of the boiler water detected by T3 sensor is only for the
heating element.
In case of malfunction of one of the two sensors, a relevant error message
will be displayed and the other sensor will be used to control both the
heat pump and the electric heater
8. Bollyterm
®
HOME Operation
Bollyterm
®
HOME is managed by a control unit interfaced with the user
that allows:
• setting the operating mode;
• managing alarm conditions;
English
T1
T2
T3
BLK
BLK
BLK
BLK
C
R
S
RED
RED
RED
RED
RED
CN1
AC-N
OUT5
OUT4
OUT3
OUT1
OUT2
CN2
CN3
RED
BLK
BLK
WHT
N
L
5
CN19
WHT
BLK
BLK
GRN
WHT
BRN
BRN
BRN
BRN
BRN
YLW
BLK
BLU
Y/G
Y/G
BLU
BLU
BLU
BLU
BLK
T4
T5
CN4
~
12V
GND
GND
GND
GND
GND
NET
GND
KEIN
GND
HTP
GND
LP
GND
HP
GND
TIME
GND
BLU
Y/G
Transformer
Control unit
80° C T thermostat
Motherboard
High pressure switch
Ambient air
T probe
Water
T probe
Water
T probe
Condenser
T probe
Gas return
T probe
Resistor
Compressor
4-way valve
Fan
Fan condenser
Fuse
Thermostat with
manual reset
Compressor
condenser
Electronic expansion
valve
220-240V~50Hz mains
power supply