HI 400 Setting up the Burner
ghi_tx001464gb.fm 65
Continued from the previous page.
3. Install the G 1/8-in. adapter (d) into the pressure port. Install a tube onto the
adapter. The tube (e) must be long enough to reach outside of the heater. Install
a 300-psig (20 bar) pressure gauge (f) onto the tube.
4. Close the access cover (a).
Checking fuel
pressure
5. Reconnect the power source.
6. Set the low fire/high fire switch to the low fire position.
7. Set the mode switch to the ON (I) position. The burner will start. With the
machine running, record the value on the gauge. This is the low fire reading.
8. Set the low fire/high fire switch to the high fire position. Wait approximately
30–40 seconds to allow the burner to switch from low fire to high fire.
9. With the machine running, record the value on the gauge. This is the high fire
reading.
10.Set the mode switch to the OFF (I) position.
11.Compare your readings with the recommended pressures.
Recommended fuel pressures:
Low fire (stage I) = 181 psi (12.5 bar); High fire (stage II) = 217 psi (15 bar)
This procedure continues on the next page.
wc_gr012098
f
b
a
e
e
d
WARNING
High voltage, cutting, and hot surface hazards exist inside the machine. High
voltage can cause severe injury or death.
f Use extreme care when working inside the machine.
f Only start/run the machine when the pressure gauge is outside of the machine.
f Only start/run the machine when the cover is in place.
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