42 WHC/WHE
GB - 10
Electric heaters
Electric heater
There are two, armoured heaters connected together in series.
The powers obtained are described in the table.
Operation with electric heaters at the same time as with hot
water is only possible if the temperature of the water entering
the coil is lower than 45°C; to enable the heater + hot water
function you must:
a) configure the relevant SW1 switch on the printed circuit;
b) install the coil maximum temperature protection thermostat
(accessory).
If the unit is configured for simultaneous heater and hot water
operation and the coil maximum temperature protection thermostat
is not installed, the unit cannot operate in heating mode.
햲 heater + hot water switch
햳 Only electric heaters
FAN MOTOR
M4
CN1
GND
PUMP M3 M2 M1 VALVE
L N TH HTR V1 V2
RL1
LN 12345678
M5
CN2
H 0 + HTR
2
ONLY HTR
SW1
HEATER
F1
햳
햲
Table VI: Technical data of electric heaters
Model 42WHE 016 020 028
Electric heater capacity W 2 x 500 2 x 500 2 x 500
Supply voltage V 230 ~ 50Hz 230 ~ 50Hz 230 ~ 50Hz
Max current drawn A 555
Automatically reset
safety thermostat
open 60°C ± 3°C; closed 45°C ±3°C
Manually reset
safety thermostat
open 75°C ±5°C
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