FloAire FAV-M - Manual (Page 23)

23
Setting Low Fire
Use the Maxitrol amplifier to override the heater into low
fire.
Remove the 24V power source from amplifier
Adjust the low fire setting on the modulation valve so
the flame is 2-3 inches without dark spots
See the details for the low fire pressure adjustment
locations
Use the burner observation port on the end of the
unit to view the flame size
Replace all amplifier wires in the place they were
removed to set high and low fire
Additional capacity is provided via a low fire bypass
when MR212 low fire capacity is insufficient. Additional
adjustment is made via the R400S regulator installed in
the low fire bypass.
Final Start-Up
Set the Burner Intake On-Off Thermostat to the desired setting
This will automatically open the burner circuit when the outside air is above the selected
temperature
Turn the blower and burner service switches OFF
Now the unit will be operated from the control panel only
Operate the unit from the remote panel checking the lights, switches, set-points, and optional
thermostats or timers
Review the proper operation and sequence of operation with the customer to ensure that the unit is
operated properly and that the customer does not misuse the equipment
Complete the Start-Up Sheet and fax it to the service department to validate the warranty
Start-Up Complete
LOW FIRE
M511 & M611
LOW FIRE
MR212