EngA ENGINEERED AIR base Technical Manual page 32

base
83
Open Air Proving
Shorted Air
84
Proving
Plugged
85
Condensate
86 High Limit
Flame Relay
87
Wiring
88 Flame Failure
89 Blocked Flue
90 60 Hz
DG Alarms
80 Gas Valve Wiring
Gas Valve out of
81
range
Air Actuator Out
82
of range
Open CB Air
83
Proving
Shorted CB Air
84
Proving
Plugged
85
Condensate
86
High Limit
Flame Relay
87
Wiring
88 Flame Failure
89 Blocked Flue
IOM74
Combustion blower does not exceed 3000 rpm during purge.
Combustion rpm speed sensor has a value greater than 500 rpm for 60 seconds
before the combustion blower has been commanded on.
Blocked condensate sensor reads less then 7kΩ for more than 5 minutes.
High limit safety tripped due to excessively high temperature.
Received a gas valve feedback within 500ms of activating the flame relay
output.
Gas valve feedback has no power after 1 minute of enabling the Flame relay
output.
Blocked flue sensor tripped.
Combustion blower frequency has exceeded 60 Hz (3590 RPM)
Gas valve feedback has power before the FR and SR contact are energized.
Gas valve actuator feedback is greater or less than the demand. Tolerances
and timing depending vary on mode of operation.
Air Actuator Feedback Is greater or less than the demand. Tolerances and
timing vary depending on mode of operation.
Combustion blower air switch input has no power for 60 seconds after
commanding the combustion blower on / Combustion blower air switch input
has no power for 2 seconds during main flame
Combustion blower air switch input has power for 10 seconds before the
combustion blower has been commanded on.
Blocked condensate sensor reads less than 7kohms for more than 5 minutes.
High limit safety tripped due to excessively high temperature.
Received a gas valve feedback within 500ms of activating the Flame relay
output.
Gas valve feedback has no power after 1 minute of enabling the Flame relay
output.
Blocked flue input has been enabled for 1 minute or more.
32
A
November 2020 R105