Sterling QVOF - Manual (Page 3)

3
Figure 1 - Fuel Oil Piping.
Figure 2 - Piping Overhead System
NOTE: When two units are connected to a common
chimney, they should be connected as shown in
Figure 3.
Figure 3
4 – FLUE CONNECTIONS
Connect flue pipe to chimney. If chimney is masonry
type, be sure base is clean of debris and that opening
through tile is at least as large as flue pipe (see
specification sheet).
Chimney, either masonry or pre-fab, should be in
accordance with local requirements. The flue gas exit
of a chimney shall be at least 3 feet above the highest
point where the chimney passes through the roof of a
building, and at least 2 feet higher than any portion of a
building within 10 feet of the chimney. Chimney should
not be connected to an open fireplace, but could serve
two heating units.
Barometric draft regulator should be installed in flue
pipe, Regulator should be installed in run of flue pipe,
either horizontal or vertical. It is poor practice to install
in a tee that is substituted for an elbow as this has a
tendency to puff odors out of regulator on starts.
Special attention must be given to those installations
such as service stations and warehouses where units
are suspended at ceiling level. Because of the height
restrictions on the chimney, draft is not adequate.
Available for these installations is a draft inducer and
prover at additional cost.
VALVE
FILTER
CHECK VALVE
(ENLARGED)
GROUND LEVEL
RETURN LINE
BURNED
FUEL OIL
TANK
SUCTION AND
RETURN LINE
CLEARANCE FROM
BOTTOM OF TANK
MINIMUM 2"
MAXIMUM4"
90°
TO ROOF
BAROMETRIC
DRAFT
REGULATOR
"Y"
45° L
BAROMETRIC
DRAFT
REGULATOR
UNIT 1 UNIT 1
VACUUM BREAKER
2 – 4 FT.
LINE PRESSURE
NOT TO EXCEED 6 PSI
PRESSURE HEAD
35 FT
. MAX.
FURNACE
NO. 1
FURNACE
NO. 3
FURNACE
NO. 2
SUCTION LIFT
15 FT
. MAX.
1/2" O.D. COPPER TUBING
SUPPLY LINE
VALVE
(OPTIONAL)
COMPOUND
GAUGE
WALL
VALVE
CHECK VALVE
INLET
LINE
1/2" O.D. COPPER TUBING
PUMP
FILTER
RETURN LINE
TANK
SUCTION AND RETURN
LINE CLEARANCE FROM
BOTTOM OF TANK
MINIMUM 2"
MAXIMUM 4"