CAUTION
Failure to use properly sized wiring and circuit
breaker may result in property damage. Size wiring
and circuit breaker(s) per Product Specications
bulletin (EHB) and unit rating plate.
WARNING
Fire Hazard. Use of aluminum wire with this product
may result in a re, causing property damage,
severe injury or death. Use copper wire only with
this product.
WARNING
Electric Shock Hazard. Can cause injury
or death. Unit must be properly grounded
in accordance with national and local
codes.
Electronic Ignition
-
NOTE - The ignition control thermostat selection DIP
switch is factory-set in the “TWO-STAGE” position.
Applications Using a Two-Stage Thermostat
See FIGURE 54 for ignition control sequence
A - Heating Sequence -- Integrated Control Thermostat
Selection DIP Switch 1 OFF in “Two-Stage” Position
(Factory Setting)
1 -
2 -
NOTE - If the low re pressure switch does not close
the combustion air inducer will switch to high re.
After a 15 second pre-purge the high re pressure
switch will close and the unit will begin operation on
high re. After 10 to 20 seconds of high re operation
the unit will switch to low re.
4 -
7 -
9 -
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