If The Boiler Doesn't Start; Sequence Of Operation - FULTON PulseHW Series Installation, Operation And Maintenance Manual

3. If the Boiler Doesn't Start

a) Adjust blocked air intake switch (BIS)
1. Screw the switch fully in. Do not over tighten the screw.
2. With the boiler running in manual and 100% high fire, back the switch out until the
boiler switches off.
3. Turn the BIS in one full turn.
4. Re-start the boiler.
Do not change the Flame Pressure Switch settings.
b) Check that the temperature control is set higher than water temperature in the boiler.
Check for tripped circuit breaker or blown fuse.
c) Check for possible restrictions (foreign objects, snow, rags, leaves, etc.) in either the air
supply inlet or the exhaust outlet on the outside of the building. For all models, check
reset switch. Check for proper water level in the boiler (low water cutoff).
d) If the boiler still does not operate, follow these instructions to shut off the gas and
call your service technician and/or gas supplier:
1. Turn off all electric power to the boiler if service is required.
2. Turn gas cock knob clockwise to "OFF".

4. Sequence of Operation

a) INITIATE: The RM7865 enters the five second INITIATE sequence when the Relay
Module is powered. The RM7865 can also enter the INITIATE sequence if the Relay
Module verifies voltage fluctuations of +/ 10-15% or frequency fluctuations of +/-10%
during any part of the operating sequence. The INITIATE sequence lasts for five seconds
unless the voltage or frequency tolerances are not met. When the tolerances are not met,
a hold condition will be initiated and will be displayed on the optional display module for
at least five seconds. When the tolerances are met, the INITIATE sequence will restart. If
the condition is not corrected and the hold condition exists for four minutes, the RM7865
will lockout.
b) Causes for hold conditions in the INITIATE sequence are:

AC line dropout is detected.

AC line frequency error caused by using a 60 Hz device on a 50 Hz line or vice
versa.

AC line noise that can prevent a sufficient reading of the line voltage inputs.

Brownouts caused by a low line voltage.
Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Note
Page 58