ENGLISH
15 / 30
0006081041_201809
OPERATING DESCRIPTION
TWO-STAGE OPERATION
If when the main switch is turned on, the thermostats are on, the
voltage reaches the control box which starts the burner.
This turns on the fan motor for pre-ventilation of the combustion
chamber. At the same time, the servomotor commanding the air
lock opens in the position corresponding to the second flame, so
pre-ventilation takes place with the air lock in the second flame
position.
At the end of the pre-ventilation phase, the air lock is returned to
the first flame position, then the ignition transformer comes on and,
2 seconds later, the gas valves open.
The main valve, which has two stages, has a device for adjusting
gas delivery for the first and second flame.
The air damper is operated by a specific electric servomotor (see
SERVOMOTOR ADJUSTMENT CAMS). Keep in mind that when
the burner is locked out because the thermostat is tripped, the
servomotor returns the air lock to the closed position. The presence
of the flame, detected by the control device, permits continuation
and completion of ignition, turning off the ignition transformer. The
second flame then comes on (combustion air is increased and the
second stage of the main valve opens).
If there is no flame, the appliance shuts down in "safety lock-out"
mode (led 8 switches on) within 3 seconds of the opening of the first
flame on the main valve.
In “safety lock-out” mode the valves are closed again immediately.
To release the appliance from safety lock-out mode, press button
Reset button on the electrical panel.
3
4
6
2
8
7
1
5
sinotticoTBG85P
1 Main switch ON/OFF
2 Thermostat on indicator light
3 Fan motor indicator light
4 Ignition transformer indicator light
5 1st stage gas valve light
6 2nd stage gas valve light
7 Unlock button
8 Lock indicator light
Summary of Contents for TBG 85P
Page 2: ......
Page 31: ...ITALIANO 29 30 0006081041_201809 SCHEMI ELETTRICI ...
Page 61: ...ENGLISH 29 30 0006081041_201809 WIRING DIAGRAMS ...
Page 63: ......
