CleaverBrooks CFC User Manual

61 750-265
Minimum stage off
time
Whenever the LL master turns off a stage, it will remain off for at least the amount of time
specified here, before it is requested to turn on again.
Not available
at this time.
Modulation output This parameter selects the modulation output. The Falcon software responds by driving the
appropriate circuit to provide modulation of firing rate.
41
NTC sensor type The sensors used may all be the 10K NTC type in which safety sensors are redundant, or
all be a 12K NTC type in which no sensors are redundant and external temperature limit
devices are required. The latter is for MCBA retrofit compatibility.
36
OEM identification The OEM may provide identification information here. 19
Outdoor frost
protection setpoint
This parameter provides the setpoint for frost protection based on outdoor temperature.
When the outdoor temperature falls below this threshold then frost protection will be active.
Outlet high limit
response
If Recycle && hold is selected, the burner control recycles and waits for the outlet
temperature to fall. It will remain in this holding condition until the outlet temperature is lower
than the outlet high limit temperature minus 5 degrees F.
30
Outlet high limit
setpoint
If the outlet temperature reaches the value given by this parameter, a response will occur. 30
Outlet T-rise
degrees
If the T-Rise limit is active and the outlet temperature rises faster than this number of
degrees per minute, then the burner will recycle and delay for a specified time.
34
Outlet T-rise delay This parameter provides the delay time before the burner will again attempt to fire, when an
outlet T-rise limit has occurred.
35
Outlet T-rise limit
enable
This parameter enables or disables the outlet T-rise limit. 35
PFEP This parameter provides choices for the duration of the pilot flame establishing period.
Flame must be on at the end of this period. This parameter is ignored if DBI (Direct Burner
Ignition) is selected.
39
PID iteration
frequency
PID iteration frequency. This parameter determines how many executions of the demand/
rate task occur between executions of the PID control algorithm.
PII enable This parameter enables the Pre-Ignition Interlock input. If disabled the PII input is ignored. 36
PII long name The long name (up to 20 characters) of the PII annunciator input. 48
PII short name The short (3 letter) name of the contacts monitored by the PII annunciator input. 48
Pilot test hold If the Pilot type is Interrupted or Intermittent and this parameter is enabled then the burner
control sequence will hold (forever) at 1 second into the Ignition state, while monitoring the
flame via a 15 second timer.
40
Pilot type Interrupted pilot turns off after MFEP (main flame establishing period). Intermittent pilot
remains on during the Run period (no MFEP). DBI (direct burner ignition) indicates the main
flame is lit directly using a 4 second ignition period.
37
Postpurge rate This parameter specifies the analog output or fan speed used during Postpurge. 41
Postpurge time This parameter sets the burner control's postpurge time. Setting this parameter to zero
disables prepurge.
40
Power up with
lockout
If Enable is chosen, then if the control is in the lockout condition when it powers up, it will
remain that way. Disable means that power cycling the control will clear a lockout.
36
Preignition time During the Preignition time the igniter output is energized and the occurrence of flame is a
fault condition. It can be used to heat up a hot-surface igniter or to prove that spark does not
simulate flame. Set to zero to disable.
37
Prepurge rate This parameter specifies the analog output or fan speed used during Prepurge. 41
Prepurge time This parameter sets the burner control's prepurge time. Setting this parameter to zero
disables prepurge.
37
Pulses per
revolution
The number of pulses per revolution of the fan is provided by this parameter. (Typically it is
the number of Hall-effect sensors that the fan contains.)
Pump exercise
interval
This parameter specifies the maximum number of days that a pump can be off. If this limit is
reached then the pump is turned on for the specified exercise time. If the interval is zero
then this exercise function is disabled.
47
Pump exercise time This parameter specifies the amount of time that a pump remains on, when it has been
turned on due to the exercise interval. If this time is zero then the exercise function is
disabled.
47
Table 30. Parameter Glossary.
Parameter Name Short Description Ref. Page

CleaverBrooks CFC Specifications

General

Brand	CleaverBrooks
Model	CFC
Category	Boiler
Language	English