Electrical Connection - Riello 40 GS20/M - HEATER Manuel D'entretien

4.2 ELECTRICAL CONNECTION,

WARNING
If the boiler has a the 7 pin plug, it should be replaced with the one supplied with the burner.
WITHOUT REGULATOR
PS
– Remote manual reset
MB
– Burner terminal block
X7
√ 7 pin plug
X4
√ 4 pin plug
X6
√ 6 pin plug
h2
√ 2nd stage hourcounter
TR
√ High-low mode control
device system
h1
√ 1st stage hourcounter
S
√ Remote lock-out signal
IN
– Manual burner stop switch
TL
– Limit control device system
ATTENTION
Do not connect any contact
between T6 and T8 at the
4 pin plug and between T1
and T2 at the 7 pin plug, in
order to avoid interference
with the regulator.
PS – Remote manual reset
MB
– Burner terminal block
X4 –
4 pin plug
2546001
(as set up by the installer)
WITH REGULATOR
X7 –
7 pin plug
BT
–
Temperature probe
BP
–
Pressure probe
(high-low progressive mode operation)
~ 60Hz 220V
T6A √ Fuse
TS
– Safety control device system
PG
– Min. gas pressure svitch
VR
– Adjustment valve
VS – Safety valve
(fully modulating mode operation)
7
GB
D7137