750-265 62
Purge rate proving This parameter specifies the input used to confirm the Prepurge rate has been reached. 37
PWM frequency This parameter provides the frequency of the pulse-width modulation for variable speed fan
control.
41
Run flame failure
response
If flame fails in Run and recycle is selected then the burner control recycles back to the
beginning of Prepurge, then continues with the normal burner startup process to attempt to
light the burner again.
39
Run stabilization
time
During run stabilization the modulation rate is held at the Lightoff Rate parameter setting
and is released for modulation only after the hold time given by this parameter has expired.
If this parameter is zero then there is no stabilization time.
40
Slave mode Each slave burner can specify how it should be handled by the Lead Lag master's
sequencer. This parameter selects one of those methods.
Not available
at this time.
Slave priority When a slave burner is Used First or Used Last, it's order of use vs. other burners also
having the same slave mode can be set using this parameter, to give each slave a different
priority.
Not available
at this time.
Slow start ramp When slow start limiting is effective, the modulation rate will increase no more than the
amount per minute given by this parameter.
33
Slow start setpoint If slow start limiting is enabled and the outlet temperature is less than the temperature
provided by this parameter, slow start rate limiting is effective, whereas whenever the outlet
temperature is above this value, slow start limiting has no effect.
33
Spark Voltage Spark voltage configuration for Safety uC
Stack limit delay This parameter provides the delay time for the Stack limit. 30
Stack limit enable This parameter enables or disables the entire stack temperature limit function. 30
Stack limit response For Recycle and Delay, the burner control recycles and holds while waiting for a delay (see
the Stack Limit Delay parameter) to expire, and after the delay it tries again.
30
Stack limit setpoint If the stack temperature exceeds the temperature given by this parameter then the
response defined for the Stack Limit Response parameter will occur. As the temperature
approaches this limit, the Stepped Modulation Limiting function is active.
30
System pump
control
The Boiler pump can be turned on manually, or it can be set to operate automatically. If it is
turned on then it remains on until changed back to Auto. In Auto mode it operates according
to the demand and overrun time.
45
System pump cycle
count
System pump cycle count. Can be written to a new value (e.g. if the pump or controller is
replaced).
5
System pump
output
This parameter allows the System pump function to be disconnected or to be attached to
any of the pump outputs.
45
System pump
overrun time
This time indicates how long the System pump should remain on after demand ends. 45
Temperature units This parameter determines whether temperature is represented in units of Fahrenheit or
Celsius degrees.
18
Table 30. Parameter Glossary.
Parameter Name Short Description Ref. Page
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