Section 4 — CFC Commissioning
4-18
Part No. 750-263
I. INITIAL START-UP PROCEDURE
NOTE:
For LP gas-fired units or boilers with optional dual-fuel gas
train, see section
K - Procedures for LP gas.
1. Gas Train and Piping
The ClearFire burner is equipped with a combination servo-
regulated gas valve and venturi mixing unit. The gas valve consists
of a single body with dual solenoid shut off valves, filter screen, and
a built-in constant pressure gas/air servo controller. The blower
speed is controlled by the CB Falcon with airflow directly
proportional to the speed of the fan. The airflow creates a drop in
pressure due to the venturi effect. The modulating controller of the
valve actuator senses air pressure change and accordingly brings
about a change in the gas flow proportional to the air pressure. The
gas follows the airflow in a set ratio, so that fuel always matches
the air as the burner firing rate increases or decreases.
1. Check the gas delivery system to be sure it is properly piped and
wired.
2. Review available gas pressure to assure it is compatible with the
main gas regulators upstream of the Model CFC gas train.
Note:
The maximum rated inlet pressure to the CFC gas train is 1/2
psig (14.0" WC). An upstream regulator and overpressure
protection are required if building supply gas pressure is
greater than 1/2 psig.
3. To bleed air from the supply pipe, open the manual gas shut off
valve upstream of the burner gas train and bleed air from the
piping by loosening the union in the upstream piping.
4. The burner and its gas connection must be leak tested before
placing the boiler into operation.
5. Gas Pressure Regulator - Using the adjusting screw on the main
gas regulator, adjust the inlet pressure to the recommended
levels in Table 4-3.
!
Warning
Before initial startup, check for block-
ages in the flue venting or vent termi-
nations. Inspect the burner and
furnace for any contamination or
blockages.
Note: To measure supply pressure
at the CFC gas valve, use the
test port on the valve inlet
flange (see below). Do not
use the leak test cocks to
measure gas pressure.
Pressure
check
Figure 4-4 Premix Burner Technology - Full Modulation
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 ...
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Page 251: ...APPENDIX C GAS VALVE ...
Page 252: ......
Page 269: ...APPENDIX D CB FALCON MODBUS COMMUNICATION ...
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