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Part number 550-142-330/0421
19
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 4 — Boiler Manual
SERVICETECHNICIANONLY—readandfollowcompletely.
Figure10 Back outlet breeching connection for
SGO-3 through 7 with OVD damper.
Connect breeching (continued)
Figure11 Back outlet breeching connection for SGO-8 and
SGO-9
Figure12 Top outlet breeching connection for
SGO-8 and SGO-9
Figure13 Top outlet breeching connection for
SGO-3 through 7 with OVD damper.
Typical location for
barometric control
(Also see control
manufacturer’s
instructions)
Flue pipe
bracket
(One on each
side of pipe)
Typical location for
barometric control
(Also see control
manufacturer’s
instructions)
Flue pipe bracket
(One on each
side of pipe)
0251-056_OVD
OVD Damper
(Required)
BVSS
(WMO-1)
(Integrated with damper)
BVSS must be installed
upstream of the barometric
damper.
Typical location for
barometric control
(Also see control
manufacturer’s
instructions)
Flue pipe
bracket
(One on each
side of pipe)
0250-056_OVD
OVD
Damper
(Required)
Flue pipe
bracket
(One on each
side of pipe)
Typical location for
barometric control
(Also see control
manufacturer’s
instructions)
BVSS
(WMO-1)
(Integrated with damper)
BVSS must be installed
upstream of the
barometric damper.
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