Справочник Пользователя для Empire Comfort Systems DVF-42-2

R-5627

Page 29

START

System Check

END

Trial for

Ignition

Main Burner

Operation

Apply 24 VAC

to Appliance

Thermostat

Calls for Heat

Flame Signal

Detected

Internal Check

OK

• Pilot Valve Opens
• Ignitor Powered

Pilot Light and Flame is

Sensed During Trial

For Ignition  (1)

• Ignitor OFF
• Main Valve Opens

Flame Signal

Lost?

Thermostat Call

for Heat Ends

NO

NO

NO

NO

5 Minute Retry

Delay

3 Second Flame

Failure Recycle

Delay

YES

YES

YES

NO

• Pilot Valve Ignition OFF
• Wait for Flame Signal to

Disappear

(1) Ignitor will turn OFF about 30 seconds into the trial for ignition if the pilot flame has not lit.  It will turn back ON for the final 30 seconds

of the 90 second trial for ignition.  The pilot valve will be energized during the entire trial for ignition.  This is normal operation for this gas
ignition system.

• Pilot Valve Closes
• Ignition OFF

Main Pilot Valves

Close

Flame Lost More

Than 5  Times in

One Call for Heat

Main Pilot

Valves Close

YES

YES

Switch "ON"

Switch "OFF"

Apply 24 VAC

to Fireplace