CB FALCON
750-265 94
Exchanger T-Rise
enable
This enables/disables temperature rise detection for the heat exchanger sensor S9 (J9
terminal 6).
44
Fan during off cycle
rate
If this parameter is non-zero for a control that is enabled as a LL slave, then it provides the
modulation rate (e.g. fan speed) that should be used when the LL master indicates this
burner should be off but should run its fan at the off cycle rate.
Fan gain down This parameter determines how aggressively the fan controller changes the fan duty cycle
when the fan should slow down. It is the gain of a first-order filter (e.g. it is the I gain of a PID
control in which the P and D gains are always zero).
52
Fan gain up This parameter determines how aggressively the fan controller changes the fan duty cycle
when the fan should speed up. It is the gain of a first-order filter (e.g. it is the I gain of a PID
control in which the P and D gains are always zero).
52
Fan min duty cycle Whenever a variable speed fan is on it will never receive a duty cycle less than this
parameter's value. It should be set to the duty cycle at which the fan is guaranteed to keep
spinning (after it has started) so that it will never stall.
52
Fan speed error
response
If fan 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
bring the fan up to speed again.
60
Firing rate control If one of the manual modes is chosen then the Manual Rate parameter controls the firing
rate during the specified states.
51
Flame sensor type Different kinds of flame detectors may be used. This parameter tells the control what type of
sensor is installed.
58
Flame threshold The flame threshold can be adjusted to match various kinds of flame detectors and
equipment. It is specified in tenths of volts, where 0.1V = 0.1 microamp for a flame rod.
Forced recycle
interval time
After scheduled time of continuous run, system is recycled, specifically if inversion detection
is used to provide Safe Start.
58
Frost protection
anticondensation
enable
When Frost Protection is in control, either the CH or DWH anticondensation function is
enabled.
50
Frost protection
method
Determines what happens when Frost Protection (from any source) becomes active. 42
Heat exchanger
high limit
This enables/disables temperature rise detection for the heat exchanger sensor S9 (J9
terminal 6).
45
Heat exchanger
high limit delay
Specifies the delay time that occurs whenever a recycle occurs due to a Heat exchanger
high limit event and the specified response includes “Recycle...” The burner will remain in
the Standby Hold condition until the delay expires.
45
Heat exchanger
high limit response
Specifies response should “Heat exchanger high limit setpoint” threshold is reached. 45
Heat exchanger
high limit setpoint
Provides the setpoint at which a response occurs if “Heat exchanger high limit” function is
enabled.
45
Heat exchanger
retry limit
If the “Heat exchanger high limit response” specifie
s a retry limit, then any recycles due to
reaching the heat exchanger high limit threshold are counted. If this count ever exceeds the
“n” value, then a lockout occurs.
45
Heat exchanger T-
rise enable
Enabled, Disabled 45
IAS start check
enable
This parameter enables a start check for the Interrupted Air Switch input. If enabled, this
input must be off before leaving Standby, to prove that it is not shorted.
57
Ignite failure delay When Recycle && hold after retries is selected as the response for an ignition failure, this
parameter provides the delay time for the hold.
60
Ignite failure
response
If ignition fails then several responses are possible. This parameter selects one of these
responses.
60
Ignite failure retries This parameter provides the number of retries for an ignition failure, if the response to
failure of ignition includes retries.
60
Igniter on during The igniter may be on throughout the pilot establishing period, or only during the first half of
it (early ignition termination). Ignored if DBI is selected.
59
Ignition source Several outputs may be selected as the ignition source. This parameter selects one of
these.
60
Table 47. Parameter Glossary.
Parameter Name Short Description Ref. Page
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