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Weil-McLain SGO SERIES 4 OIL-FIRED STEAM BOILER SGO-7 Residential Boilers

User Manual - Page 12

For SGO SERIES 4 OIL-FIRED STEAM BOILER SGO-7.

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Part number 550-142-330/0421
12
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 4 — Boiler Manual
HOMEOWNER฀and฀SERVICE฀TECHNICIAN฀—฀read฀and฀follow฀completely.
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 combus-
tion chamber. Immediately 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.
Figure฀4 SGO boiler with probe-type low water cutoff (see Figure 3, page 11 for float-type low water cutoff)
Steam relief valve
(on back of boiler)
Gauge glass
Probe-type
low water
cutoff
Reset button
on burner
primary
control
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
Burner
disconnect
plug
Service
switch
on boiler
Operation (continued)
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