CB FALCON
750-265
44
T-Rise
A limit may be imposed on the rate of temperature rise for
either the outlet or exchanger temperature, or both.
Delta-T inlet/exch degrees
Degrees, none
Delta-T exch/outlet degrees
Degrees, none
This is the temperature at which a Delta-T response occurs, measured as the signed value
(hi-lo) if the result is negative then it is treated as zero (inversion detection may be enabled to
handle this, but that is a different function which does not use this parameter).
All of the Delta-T functions will share the following parameters:
Delta-T response
Lockout, Recycle & Delay, Recycle & delay with retry limit
This specifies the type of response that occurs when the Delta-T degrees threshold is met.
The Recycle & delay with retry limit will limit the number of retries as specified by the Delta-T
retry limit.
Delta-T delay
mm:ss, none
Specifies the delay time that occurs whenever a recycle occurs due to a Delta-T or Delta-T
inverse event occurs and the specified response includes “Recycle...” The burner will remain
in the Standby Hold condition until the delay expires.
Delta-T retry limit
number of tries
If either the Delta-T response or the Delta-T inverse limit response specify a retry limit, then
any recycles due to reaching the corresponding response threshold are counted. If this count
ever exceeds the “n” value, then a lockout occurs.
A single counter is used for Delta-T and Inversion Detections, so it could be that different
causes occurred to make the counter exceed its final retry limit count of “n” Only the final
event that causes the count to exceed the retry limit is annunciated as the cause of the
lockout, although each of the reasons for recycling abnormally always generates an alert, as
usual, so the presence of other events will be visible in that log.
The retry counter is cleared when a normal recycle (burner turn-off) occurs due to satisfying
all of the demands.
A limit of zero is equivalent to selecting “lockout.”
Delta-T rate limit enable
Disable, Enable
Disable then no modulation limiting occurs as the delta-T threshold is approached.
Enable, then the Stepped Modulation Limiting feature is active for Delta-T.
Delta-T inverse limit time
mm:ss or None
This provides the time limit during which inverted temperature is tolerated when one of the
two inverse detection option is enabled.
Delta-T inverse limit response
Lockout, Recycle & Delay, Recycle & delay with retry limit
If temperature inversion detection is enabled and it persists for the time given by the Delta-T
inverse limit time, then the response described by this parameter occurs.
The delay time used is the time specified by the Delta-T delay and the retry limit is the count
specified by the Delta-T retry limit.
Table 18. Delta-T Limit Parameters. (Continued)
Parameter
Comment
Table 19. T-Rise Parameters.
Parameter
Comment
Outlet T-Rise enable
Disable, Enable
This enables/disables temperature rise detection for the outlet sensor S3 (J8 terminal 8).
Exchanger T-Rise enable
Disable, Enable
This enables/disables temperature rise detection for the heat exchanger sensor S9 (J9
terminal 6).
If this selection is “Enable” then the Stack Connector Type must be either “10K single non-
safety NTC” or “12K single non-safety NTC.” If this condition is not met then a lockout occurs
because the exchanger input requires using the Stack sensor as two separate sensors. Stack
being S8 (J9 terminal 4) and heat exchanger being S9 (J9 terminal 6).
Summary of Contents for CFC-1000
Page 35: ...Section 2 Installation Part No 750 263 2 21 Figure 2 23 Gas Piping ...
Page 47: ...Section 2 Installation Part No 750 263 2 33 Figure 2 41 Electrical Connection Diagram ...
Page 49: ...Section 2 Installation Part No 750 263 2 35 Figure 2 43 CFC Wiring Diagram dual fuel units ...
Page 50: ...Section 2 Installation 2 36 Part No 750 263 ...
Page 70: ...Section 3 Stack and Intake Vent Sizing and Installation 3 20 Part No 750 263 ...
Page 102: ...Section 4 CFC Commissioning 4 32 Part No 750 263 ...
Page 108: ...Section 5 Service and Maintenance 5 6 Part No 750 263 ...
Page 113: ...Section 6 Parts Part No 750 263 6 5 Figure 6 3 Casing Table 6 5 Casing parts ...
Page 117: ...Section 6 Parts Part No 750 263 6 9 Figure 6 7 Electrical assemblies single fuel ...
Page 123: ...APPENDIX A CB FALCON CONTROLLER ...
Page 124: ......
Page 244: ...CB FALCON 750 265 120 ...
Page 245: ...APPENDIX B CB FALCON PLUG IN MODULE ...
Page 246: ......
Page 250: ......
Page 251: ...APPENDIX C GAS VALVE ...
Page 252: ......
Page 269: ...APPENDIX D CB FALCON MODBUS COMMUNICATION ...
Page 270: ......