To access the 6-core cable for remote connection, remove the
upper cover of the boiler and run to the outside the cable, al-
6.8 Wiring diagram
EMC
YE-GN
Filter
YE-GN
Power
Supply
YE-GN
YE-GN
YE-GN
YE-GN
YE-GN
Solar / Hot
Water Pump
Fan Motor
Compressor
Tank Jacket
Water Tank
L
L
Solar drain v.
N
N
Description of connections available on the power board
CN1
Air, defrost and water NTC probes
CN2
Not usable
Probe for solar thermal management - Only for
CN3
models PCV3
CN4
Not usable
CN5
Solar digital inputs, PV, Off-peak
CN6
High pressure switch
Flow switch for solar thermal/DHW circulating
CN7
pump (not supplied)
CN8
Electronic fan PWM control (EC)
CN9+CN12 Not usable
CN10
Fan power supply EC, AC
Solar thermal/DHW circulating pump (ON/OFF
CN11
type), drain valve or solar collector shutter - Only
for models PCV3
CN13
Hot gas defrost valve power supply
User, Installations and Maintenance Manual
Helectric
COMP
S
Heater
R
Safety
Thermostat
C15uF
L
N
N
(N)
CN18
CN16
CN20 CN15
(L)
T5AL250V
CN19
MAIN BOARD
CN3
CN27
CN2
Solar thermal cut-out
Solar / Hot
Water Pump
Solar collector
CN11
Probe
fig. 26- Equipment wiring diagram
ready present inside the unit, through the special cable gland
installed in the back cover.
Compressor
Hot Gas
Coil
YE-GN
C
L
N
L
CN11
CN13
CN26
CN10
CN14
CN17
CN8
CN9
CN12
CN25
CN23
CN22
CN21
CN1
CN4
CN5
CN6
CN7
CN14
Not usable
CN15
Compressor power supply
CN16
Heating element power supply
CN17
Not usable
CN18
Main power supply 230 V - 1 PH - 50 Hz
CN19
Earth connections
230 Vac power supply for impressed current
CN20
anode converter
CN21
Connection with end of line inspection/test
CN22
WI-FI card connection (not supplied)
CN23
User interface connection
CN25
Not usable
N
L
EC Fan
Motor
M
YE-GN
U.I.
Board
WI-FI
Board
F.C.T.
Connection
HPSW
Page 21