Control timings, Specifications – Bradford White M-2-TW-75T6BN User Manual
Page 9
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Control Timings
Ignition State
Timing
Pre-purge
2 Seconds
Trial for Ignition
90 Seconds
Flame Stabilization Period
3 Seconds
Inter-purge
15 Seconds
Flame Failure Response Time
1.5 Seconds (2 second. Maximum; 1 second minimum.)
Post-purge
15 Seconds
PS Fault Delay (failed open/close)
Retry after 2 Minutes
Soft Lockout
Retry after 5 Minutes
TCO Limit Lockout
Indefinite (See Page 24 to reset)
Simulated Resistive Load Lockout
Indefinite (cycle power to reset)
Hardware Error Lockout
Indefinite (self clears if fault clears for at least 15 seconds)
Verify Resistive Delay
Retry after 2 Minutes (repeats 5 times)
Specifications
Page 9
A
C
B
Blower
Motor
Blower
Temperature
Switch
Pressure
Switch
Pilot
Blower
Housing
Wiring Diagram
Simulated
Resistive
Device
Thermal
Well
Page 9
Blower
Motor
Blower
Temperature
Switch
Pressure
Switch
Pilot
Blower
Housing
Wiring Diagram
Flammable
Vapor
Sensor
Thermal
Well
A
C
B
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