Form 44201360
36
Oct 2019
Direct Burner Spark Ignition Modules.
1.
Turn on the gas supply to the appliance.
2.
Set any time switch or thermostats to demand heat.
3.
Switch on the electrical supply to the appliance.
4.
Following a 1.5 second pre-purge the burner should ignite within 10 seconds.
5.
If the burner fails to light, or flame is not detected during the first trial for ignition (a period of 10 seconds)
the gas valve is de-energized and the control goes through an inter-purge delay of 15 seconds before
another ignition attempt. The control will attempt two additional ignition trials before going into lockout.
6.
If 'Lockout' occurs, switch off the electrical supply to the appliance, wait for 5 minutes before switching on
the electrical supply to the appliance to repeat the ignition sequence.
7.
If the appliance fails to ignite after a second sequence, switch off the electricity supply to the appliance
and call the service engineer.
8.
If gas failure occurs after successful ignition, the appliance will attempt one re-ignition before going to
"Lockout" conditions.
9.
To shut down the appliance for short periods of time, switch off the electrical supply to the appliance.
10.
To shut down the appliance for longer periods of time switch off the electrical supply to the appliance and
turn off the gas supply at the gas isolation valve.
SEQUENCE OF OPERATION
18.1)
Normal operation:
The chart below shows the sequence of operation for the normal operating cycle of the heater turned on and off by
a remote 230V thermostat.
SERVICING AND ANNUAL MAINTENANCE
19.0)
