CleaverBrooks CFC-500 Operation, Service And Parts Manual page 220

CB FALCON
Parameter Name
LL - Slave write This allows the slave to accept command messages from a master.
Manual firing rate This parameter specifies the analog output or fan speed during burner modulation, when
the Firing rate control parameter specifies Manual mode.
MFEP This parameter provides choices for the duration of the MFEP (main flame establishing
period) time. Flame must remain on throughout the MFEP or a response occurs. Not
needed and ignored unless the Pilot type is Interrupted.
MFEP flame failure If flame fails in the Main Flame Establishing Period and recycle is selected then the burner
response control recycles back to the beginning of Prepurge, then continues with the normal burner
startup process to attempt to light the burner again.
Minimum Provides the lower limit of analog output or fan speed during modulation (this is for both CH
modulation rate and DHW).
Modulation output This parameter selects the modulation output. The Falcon software responds by driving the
appropriate circuit to provide modulation of firing rate.
Modulation rate If the modulation rate source is Local, then the control's PID algorithm determines the
source modulation rate.
If the modulation rate source is S2 4-20mA, then the modulation rate is determined by the
S2 4-20mA modulation routine that exists in prior controls. If this sensor is invalid then the
control behaves as if Local were selected.
Modulation sensor The selected input provides the temperature clearance for modulation control.
As a startup check, if the CH Loop is enabled for a hydronic system, and if the select sensor
is not a temperature input, then this causes an alert and forces the CH loop to suspend.
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.
OEM identification The OEM may provide identification information here.
Outdoor Connector Designates the Sensor type connected to the control for proper reading.
Type
Outdoor frost This parameter provides the setpoint for frost protection based on outdoor temperature.
protection setpoint When the outdoor temperature falls below this threshold then frost protection will be active.
Outlet Connector Designates the Sensor type connected to the control for proper reading.
Type
Outlet high limit Used to set the Outlet high limit on or off.
enable
Outlet high limit If Recycle && hold is selected, the burner control recycles and waits for the outlet
response 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.
Outlet high limit If the outlet temperature reaches the value given by this parameter, a response will occur.
setpoint
Outlet T-Rise enable This enables/disables temperature rise detection for the outlet sensor S3 (J8 terminal 8).
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.
PII enable This parameter enables the Pre-Ignition Interlock input. If disabled the PII input is ignored.
PII long name The long name (up to 20 characters) of the PII annunciator input.
PII short name The short (3 letter) name of the contacts monitored by the PII annunciator input.
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.
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.
Plate preheat delay Whenever the Preheat block is false, it monitors the Tap demand block's output and
after tap operates a timer that ensures preheat will not begin too soon after a tap demand has
recently ended.
750-265
Table 47. Parameter Glossary.
Short Description
96
Ref. Page
76
51
60
60
51
51
26
26
57
21
20
20
46
46
46
44
59
57
61
61
57
58
37