CleaverBrooks ClearFire CFH, Operation, Service And Parts Manual, Page: 67 / 120

Chapter 4 — Commissioning
Part No. 750-295 4-25
13. After closing the handholes and reinstalling safety or relief valves, fill the boiler and fire it until the water
is heated to at least 180
o
F to drive off any dissolved gases.
4.15-POST START-UP CHECKOUT PROCEDURE
1. After verifying correct water level, fire the boiler in manual low fire.
2. Ensure the control valves will not shut off flow to the boiler.
3. Set high gas pressure switch to 50% higher than operating gas pressure at low fire. Set low gas pressure
switch to 50% lower than operating gas pressure at low fire.
4. Verify the ability of the flame system to detect and respond to a loss of flame. This can be done by
removing the ionization electrode (flame rod) cable. For a successful test the boiler should shut down
and the gas safety shutoff valve close with the display indicating a lockout condition. Reconnect the
ionization cable to the electrode.
5. Adjust gas choke for high fire combustion to desired excess air level (6-7% O2 recommended). Using
offset screw, set low fire O2 same as high fire O2.
6. Check the draft on the outlet stack on each boiler, compare to acceptable limits (-.25 to +.25“ W.C.)
and record in start up form.
7. Switch to automatic operation and monitor flue gas to ensure consistent excess air.
8. Reassemble all panels and covers that were removed and replace any plugs that were removed to check
gas pressure.
9. If boiler is equipped with a High Air Pressure Switch, check switch operation.
10. Verify with customer that softened water is being used and that a proper water treatment program is in
place.
11. Provide instructions to owner and operators on operation, safety and maintenance of the equipment.
4.16-FALCON CONTROL FUNCTIONS AND CUSTOMER INTERFACE
Following is a brief overview of the Falcon control features on ClearFire
®
steam boilers.
• Set Point
• Time-of-Day (TOD) Set Point
• Hysteresis On and Hysteresis Off
• PID modulation control
• Remote Enable and Remote 4-20mA Input
• Remote Modulation
• Remote Set Point
• Configurable pump/auxiliary relay contacts
• Annunciator
• Diagnostics
• Alert/Lockout History
• Trend Analysis
• Modbus communications
Table 4-6 CFH Boiler Water Capacity
Boiler Horsepower
10-15 HP 20-25 HP 30 HP 40 HP 50-60 HP 70 HP 80 HP
Normal water
volume 15# Steam 110 gal 137 gal 204 gal 237 gal 301 gal 457 gal 445 gal
150# Steam 121 gal 149 gal 221 gal 256 gal 323 gal 457 gal 445 gal
Water volume flooded 140 gal 170 gal 260 gal 300 gal 386 gal 559 gal 547 gal