Fulton Pulse HW (PHW) Fully Condensing Hydronic Boiler - Manual (Page 42)

© The Fulton Companies 2013
OPERATION
PHW-IOM-2013-0214
SECTION 3
3-6
instructions to shut off the gas and call your service
technician and/or gas supplier:
9. Turn off all electric power to the boiler if service is
required.
10. Turn gas cock handle clockwise to “OFF”.
Sequence of Operation for Modulated
Pulse Hydronic Boilers
The following is a typical sequence of operation:
1. When the boiler receives a call for heat, the prepurge
cycle is initiated.
2. The mod motor is driven to high fi re.
3. After the high fi re switch in the mod motor is closed,
the prepurge count begins.
4. Following prepurge, the spark generator energizes and
the gas valves open.
5. Upon proof of fl ame, the fan and spark are turned off .
6. At this point, the modulation temperature controller
controls the mod motor and fi ring rate of the boiler.
7. When the boiler outlet temperature reaches set point,
the boiler is turned off and prepurge begins.
8. The boiler control then monitors the outlet temperature
and waits for the next call for heat.
General Operation of the Boiler
Excessive cycling will reduce the useful life of any piece of
mechanical equipment. Pulse boilers should be operated and
controlled so the boiler cycles less than 12,000 times per year.
Pulse boilers should be operated and controlled so that the
temperature diff erential across the boiler does not exceed
100 F (38 C).
Programming Instructions for the SOLA
Control
The SOLA control has been factory-programmed and requires
no alteration of program presets. Only factory trained
personnel should attempt to alter password protected
presets. Primary screens are shown on the following pages.