S
ERIES
E
VEN
‐
T
UBE
34
J
ULY
/25/2012
Lighting & Shutdown Instructions
Lighting
1. Open manual gas supply valve (ensure gas supply lines have been purged).
2. Turn on switch to energize electric supply.
3. The blower motor will energize.
4. When the motor approaches nominal running RPM, the air-proving switch closes and
activates the ignition module.
5. The ignition module, after a pre-purge period of approximately 30 seconds, energizes the
igniter. Additionally, the gas valve is energized for this ignition trial period of 15 seconds.
6. If a flame is detected, the ignition sensing rod "reads" a rectification signal and the gas
valve remains open. The sparking stops when the flame signal is established.
7. If no flame is detected, the gas valve closes and a 30 sec inter-purge period begins. After
the inter-purge, the module repeats the trial for ignition period. If flame is still not
established, a third and final inter-purge followed by a final ignition trial cycle begins. After
three trials, the module will lockout for a period of approximately 1 hour or until reset.
(Reset is accomplished by removing power from the module for at least 5 seconds.)
After
this 1-hour period, the module re-attempts the full ignition sequence.
Shut Down
8. Turn off power to electronic control.
9. For longer periods of shut down, also close manual gas supply valve.
Note:
It is recommended to use a factory recommended “Hi-Lo switch” with this heater.
