6.7
Final checks (with burner operating)
➤ Open the thermostat/pressure switch TL
➤ Open the thermostat/pressure switch TS
➤ Turn the gas maximum pressure switch knob to the mini-
mum end of scale position
➤ Turn the air pressure switch to the maximum end of scale
position.
➤ Turn off the burner and cut off the power.
➤ Disconnect the minimum gas pressure switch connector.
➤ Disconnect the QRI cell wire.
Make sure that the mechanical locking systems
on the various adjustment devices are fully tight-
ened.
WARNING
Start-up, calibration and operation of the burner
➮
The burner must stop
➮
The burner must stop in lockout
➮
The burner must not start
➮
The burner must stop in lockout due to ignition failure
29
GB
Tab. M
20058392