Section 4 — CFC Commissioning
4-26 Part No. 750-263
modulation rate according to Tabl e 4-1 . Return to Configuration
menu.
6. Select Burner Control Ignition configuration. Adjust ignition, or
lightoff, rate according to Ta b l e 4-1 . A warning will appear
noting that you are changing a safety parameter. After changing
the speed, return to Configuration menu.
7. Press <Verify> to check safety parameter change(s). Press
<Begin> and check that all changes are correct. Press <Yes>
if correct. If incorrect press <No> and return to appropriate
parameter configuration menu to correct. After all safety
parameter changes are checked, the controller requires a
manual reset. Open the panel and reset the control.
8. Follow normal startup and commissioning procedures in this
manual beginning with Section I - Initial Startup Procedure.
Proper combustion settings for LP gas on ClearFire boilers are
between 6.5 - 7.5% O2.
Table 4-4 Parts for LP Gas
Notice
When changing a single fuel unit from LP gas to natural gas, the
orifice gasket must be removed. The vortex breaker may remain in
place if desired. If the vortex breaker remains installed, fan speed
settings will need to be adjusted upward from the normal natural gas
settings.
2. Units with optional dual-fuel gas train
1. Shut down boiler.
2. Close the natural gas supply and open propane supply.
3. Turn fuel selector switch to ‘LP Gas’. The Falcon annunciator
should show natural gas OFF and LP gas ON.
4. Turn gas selector valve to the LP gas position (see Figure 4-11).
5. Depress gas pressure switches to reset.
6. Measure gas pressure at inlet to LP gas valve - should be 11”
W.C. minimum.
Gasket
Orifice P/N Dia. (in.)
Vortex
Breaker
CFC-1800 853-01309 0.625" N/A
CFC-2500 853-01294 0.750" 197-00311
Notice
When commissioning dual-fuel units, natural gas combustion setup
should be performed first.
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