Control Timings - Bradford White UPV75 Series Service Manual

UPV75 Series

Control Timings

Ignition State
Pre-purge
Trial for Ignition
Flame Stabilization Period
Inter-purge
Flame Failure Response Time
Post-purge
PS Fault Delay (failed open/close)
Soft Lockout
ECO Limit Lockout
Verify Resistive Delay
Flammable Vapor Sensor/Simulated Resistive
Load Lockout
Hardware Status Lockout
Wiring Diagram
8
Timing
15 seconds
90 seconds
3 seconds
15 seconds
1.5 seconds (2 second. maximum; 1 second
minimum.)
15 Seconds
Retry after 2 minutes
Retry after 5 minutes
Indefinite (see page 27)
Retry after 2 minutes (repeats 5 times)
Indefinite (cycle power to restart)
Indefinite (self clears if fault clears for at least 15
seconds)
8