79
2.12.2 Room stat connection
To gain access to connector TA, remove
the control panel cover (7 fig. 9) and con-
nect the room stat to the terminals 22-23
after having removed the jumper.
The thermostat or timer-thermostat,
recommended for better room tempe-
rature control, must be class II as spe-
cified by standard EN 60730.1 (clean
contact).
2.12.3 “25 OF C - 30 OF C” wiring diagram with SIT control box
Fig. 20
KEY
EV1 Gas valve coil
EV2 Gas valve coil
EA Ignition electrode
ER Sensing electrode
A SIT 503 control box
TS 100°C safety stat
TF Smoke stat
FL Flowmeter
P Circulation pump
VP Divertor valve
TAG Antifreeze stat (optional)
C Rotary switch
TA Room stat
M Modulator
SM C.H. sensor
TL Limit stat
Note: The room stat (TA) must be connected to the terminals 22-23
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