Weil-McLain SGO Series, Maintenance And Service Manual

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6
2. Correct problems found in step #1. If burner
does not fire, press reset button on burner
primary control only once. Repeated presses
will deposit oil in combustion chamber.
Burner must never be fired
when oil is in combustion chamber. Immedi-
ately call qualified service technician.
3. If burner still does not fire, call qualified
service
technician.
SGO with probe-type low water cutoff:
1. If burner does not fire , check for:
Service switch on boiler or additional
switches turned off.
Fuses or breaker switch tripped.
Thermostat set below room temperature.
Fuel valves turned off.
Not enough oil in tank to supply burner.
No water in gauge glass.
Start-up
SGO Boiler with Probe-Type Low Water Cutoff
(See Page 5 for Float-Type Low Water Cutoff)
Figure 2
Steam Relief Valve
(on back of boiler)
Gauge Glass
Probe-Type
Low Water
Cutoff
Reset Button on
Burner Primary
Control
L
L
L
L
L
L
Tankless Heater
Control
Located in tankless heater
plate (sizes 3-5)
or in tapping in back
section (sizes 6-9)
Pressure Control
Pressure Gauge
Burner Primary
Control
n
n
n
n
n
n
n
n
n
n
n
Burner
Disconnect
Plug
Service Switch
on Boiler
Part No. 550-141-830/1202