Lanair HI320 User Manual
Page 58
1. Jump the cad cell circuit. See Sec. 17,17.2.
2. Disable transformer, Caution Hazard of Electrical Shock. Disconnect neutral wire from terminal
and oil primary wire in burner electrical junction box.
3. Adjust burner air/filter regulator to 11-12 PSI.
4. Disconnect air line at air preheater.
5. Start burner, does the air valve open and allow air to exit air line
to preheater?
Yes
No
Is there air pressure
Is there voltage (115V)
to the air valve?
to the air valve?
Yes
No
Is the air valve plugged?
Is there pressure to
the burner air/filter regulator?
Yes
No
Yes
Check burner air/filter regulator for
Clean air valve.
Replace air Valve.
proper operation
.
No
Yes
Check primary air
regulator for
proper operation.
Does Air operated Fuel
Valve function properly?
Refer to Sec. 17, 17.9.
No
Is the 5/8" OD O-Ring
at diaphragm leaking?
No
Yes
Yes
Is the 1/4" OD O-Ring
Replace O-Ring
between adaptor. and air
preheater leaking?
No
Yes
Replace O-Ring
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