FloAire Compact Direct Fired Heater - Manual (Page 13)

13
Pilot Assembly
Pilot Adjustment
1. Restart the fan and check the gas supply pressure at the inlet
gas tap upstream of all electronic valves. The inlet pressure
should be 5 in. - 14 in. w.c. If the inlet pressure is too high,
install an additional pressure regulator external to the unit.
2. Open the field installed manual gas shut-off valve and the
manual main gas valve on the combination gas control valve.
3. Call for heat with the intake air thermostat (turn set-point to
temperature above outside air) and allow the pilot to light. If the
pilot does not light, purge the pilot line. If air purging is
required, disconnect the pilot line at the outlet of the pilot valve.
4. A weak pilot flame can be caused by low gas pressure, or a
dirty pilot orifice. To adjust the pilot flame, remove the cap from
the pilot adjustment screw on the combination gas valve.
Increase the pilot gas flow by turning the screw counter-
clockwise. Decrease the pilot gas flow by turning the screw
clockwise.
5. Once the pilot has been established, open the main manual gas
shut-off valve downstream of the electronic valves. Check to
make sure that the main gas valve opens, and gas flows to the
burner.