New Yorker CG-A 30, Инструкция по установке, эксплуатации и обслуживанию

Страница: 14 / 28

14
J.
Sequence of Operation, Electronic Intermittent Ignition
(EI).
1. Normal Operation
a. Thermostat calls for heat. Vent Damper opens.
b. Ignition Module energized. Pilot Valve opens.
Igniter energized to ignite Pilot Burner.
c. Sensor proves presence of pilot flame. Main
Valve opens and ignites Main Burners.
d . Call for heat ends. Ignition Module is de-
energized. Main Valve and Pilot Valve close,
extinguishing pilot and main burners. Vent
Damper closes.
2. Safety Shutdown
a. Limit: Automatically interrupts main burner
operation when water temperature exceeds set
point. Maximum allowable temperature is 250°F.
Circulator continues to operate with call for heat
and Vent Damper closes. Normal operation
resumes when water temperature falls below set
point.
b . Blocked Vent Switch. Automatically interrupts
main burner operation when excessive vent
system blockage occurs. Circulator continues to
operate and Vent Damper remains open with call
for heat. If blocked vent switch is activated do
not attempt to place boiler in operation. The
source of blockage must be corrected by trained
and skilled personnel from a qualified service
agency before resetting switch.
c . Flame Roll-out Switch. Automatically interrupts
boiler operation when flames or excessive heat
are present in vestibule. Circulator continues to
operate and Vent Damper remains open with call
for heat. Control is single use device. If flame roll-
out switch is activated do not attempt to place
boiler in operation. The source of blockage must
be corrected and the flame roll-out switch
replaced by trained and skilled personnel from a
qualified service agency.
d . Sensor: senses pilot flame and causes ignition
module to turn off main burner and pilot burner
gas flow should pilot burner flame extinguish.
Ignition module will try to relight pilot for
approximately 85 seconds after pilot burner flame
is extinguished. If pilot burner flame can not be
reestablished, Ignition Module will shutdown.
Five to six minutes after shutdown, Ignition
Module automatically restarts ignition sequence.
Sequence continues until pilot burner flame is
reestablished or call for heat ends. Ignition
Module can be manually reset by adjusting
thermostat to end call for heat for one minute.
Circulator continues to operate and Vent Damper
remains open with call for heat.
For Electronic Ignition Troubleshooting Guide,
see Page 20.
Figure 13: Wiring Diagram, Electronic Intermittent Ignition (EI)