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Part number 550-142-330/0421
8
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 4 — Boiler Manual
HOMEOWNERandSERVICETECHNICIAN—readandfollowcompletely.
Top View
Walls
Floor
Ceiling
Wall
Figure2 Recommended service clearances
24"
C
A
B
D D
D
24"
AProvide 6" minimum clearance for service, provide 12" minimum clearance for
burner door swing.
BProvide 6" minimum clearance for service.
CProvide 6" minimum clearance for service, provide 15" left side with tankless heater.
DMinimum clearance from vent pipe to combustible material: 6" for type “L” double-
wall vent, 9" for single-wall vent.
Before installing boiler
Installations must comply with
United States
•State and local plumbing, heating and electrical codes.
•National codes where applicable.
•Standard for Controls and Safety Devices for Automatically Fired
Boilers, ANSI/ASME CSD-1, – latest edition, when required.
•National Electrical Code, ANSI/NFPA 70, – latest edition
and any additional national, state or local codes.
Canada
•Canadian Standards Association, CSA B139, Installation Code for
Oil-Burning Equipment - latest edition.
•CSA C22.1 Canadian Electrical Code Part One - latest edition.
•Applicable local or provincial codes.
Before selecting boiler location
Check for nearby connections to:
•System water piping.
•Chimney. See page 18. Boiler can be top or back vented.
•Combustion and ventilation air supply. See page 9.
•Oil supply. See page 32 for oil line routing.
•Electrical power.
Check area around boiler. Remove any combustible materials, gasoline and
other flammable liquids.
Provide clearances around boiler
(see Figure 2)
Jacket cap must be in place on boiler to
avoid requiring an 9" minimum clearance
from back or top of boiler to combustible
material.
MINIMUM clearances from vent pipe to combustible
material:
•6 inches — Type “L” double-wall vent
•9 inches — Single-wall vent
Flue pipe clearances must take precedence
over jacket clearances.
Recommended SERVICE clearances:
•24 inches — Front and top
• 6 inches — Left side, back and right side
•15 inches — Left side with tankless heater
•12 inches — Right side for burner door swing
radius
Failure to keep boiler area clear and free of combustible materials, gasoline and other flammable liquids and vapors
can result in severe personal injury, death or substantial property damage.
Homeowner—STOP! The procedures and information on this and following pages are intended only for a quali-
fied service technician who has the necessary equipment to inspect and adjust boiler and burner. A homeowner
should never attempt these procedures. The service technician must also read pages 1 through 7 before proceeding.
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