Form I-RA/D 350/500, P/N 131090R12, Page 21
Check-Test
Check Test -
After Start-up
Heater
Start-Up
Start-Up Procedure
After installing and testing your unit, follow the procedure below to start
the system.
• Turn on the main electrical supply to the heater.
• Set the manual disconnect switch to the “ON” position.
• Set the thermostat to a temperature above room temperature.
NOTE: When the low oil temperature limit senses the proper oil tem-
perature, the green light on the burner junction box will come on and
the heater will re.
A 10-minute delay may occur before ring depending on the system and
the oil temperature. The delay only occurs on initial start-up or after an
electrical power interruption.
If the system does not automatically try to re-light, then the controller is
in the “lockout” condition (Sizes 350 and 500 models) and must be reset
by depressing the red button on the controller and holding it down for
three seconds.
Once the system is purged of all air and oil reaches the nozzle, ignition
will occur.
Observation Door
Remove plug on bottom
half of door and insert
draft gauge into port.
Check that there is sufcient draft for proper combustion. A negative draft
of .01”-.02” w.c. is required in the combustion chamber over the re.
NOTE: Draft measurements must be checked anytime there is a change
in the air band setting.
RA500
Instructions for Measuring
Draft Over Fire:
• Remove the metal plug in the
observation door.
• Insert draft gauge (such as Dwyer
pressure gauge). Measurement
must read at least a negative .01”
w.c. to negative .02” w.c.
• If measurement is not as required,
adjust draft regulator until
measurement is within the proper
limits (see page 16).
• Replace the metal plug in the
observation door.
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