Eco Power Equipment IAQH Series, Installation And User Instructions Manual

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IAQH-1000 Manual
9. Set Pilot Pressure:
a. With the burner and fuel off, install a barb fitting on the 1⁄8
′′
NPT
pressure tap downstream of the pilot regulator, this tap is located on the
side of the solenoid valve, always pull from the downstream solenoid
closest to the burner pilot (See Figure GT1, Item 14)
b. Use flexible tubing to hook up a manometer to the barb fitting
c. Open the pilot manual valve
d. Turn on the heat enable function, this will start the pre purge cycle.
After the pre-purge, the pilot valve will open momentarily. Set the
pressure to 1.5-2 inH2O (3.7–5 mBar) on natural gas, and set the
pressure to 1 inH20 (2.48 mBar) on propane
Note: if adjustment is necessary the adjustment must be made while the
pilot solenoid valve is open and pilot gas is flowing. Keep in mind that on
interrupted pilot systems the pilot solenoid valve closes after the main
gas is turned on, you may need to cycle the unit on and off multiple
times to set this value.
e. View the burner sight glass with the burner on and inspect the burner
for pilot ignition.
10. Set Low Fire Adjustment:
a. Open the manifold manual valve (item 4)
b. At the main controller, set the power level to 3.1%
c. Use the sight glass on the burner to view the low fire. If flame is visible
through all holes in the burner plate, the lowfire is set within the range
of operation of the burner. Use the sight glass on the back plate of the
burner to look at the low fire. If light is visible through all of the holes in
the burner plate, the low fire is set within the range of operation of the
burner. If light is not visible through all of the holes, then the low fire is
too low and the low fi re bypass located on the side of the ratio
regulator,
see Figure GT1 item 7a, needs to be opened
(counter-clockwise to open, clockwise to close).
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