Installation of B-W Gas Vent
for one-story buildings or for
first floor of multi-story
buildings.
Ceiling plate spacers to center
B-W Gas Vent in stud space -
nail securely at both ends.
Plate cut away for full
width of stud space to
provide ventilation.
Studs on
16 inch centers
Sheet metal screw base
plate to header
Use manufacturer’s method of
fastening pipe to base plate.
Header plate of vented wall furnace
(also acts as firestop)
Installation of B-W Gas Vent
for each subsequent ceiling or
floor level of multistory buildings.
Firestop spacers supplied
by manufacturer of B-W
Gas Vent
Plate cut away
to provide passage
of B-W Gas Vent
Nail firestop spacer securely
FIGURE B
FIGURE C
CONTROLS
All controls are pre-assembled at the factory. The normal
manifold pressure should be 3.5” w.c. for Natural Gas and
10” w.c. for L.P. Gas. The maximum inlet pressure in the
gas supply pipe should never exceed 7.0” w.c. for Natural
Gas or 14” w.c. for L.P. Gas. The minimum inlet pressure
in the gas supply pipe should never be lower than 4.5”
w.c. for Natural Gas or 11” w.c. for L.P. Gas.
Pilot Adj.
Screw
ROBERTSHAW
7200ER-SO4
STANDING PILOT
Pilot Adj.
Screw
ROBERTSHAW
7200IPER-SO4
I.I.D. PILOT
FIGURE 10-A
FIGURE 10-B
The appliance is orificed at the factory for elevations up
to 2,000 feet. If installed above 2,000 feet, the BTU input
must be reduced 4% per 1,000 feet. See the following
orifice chart for the proper orifice for a specific elevation.
NATURAL GAS
SPECIFIC ELEVATIONS
Model 0 to 2,000 - 4,000 - 6,000 - 8,000 -
No. 2,000’ 4,000’ 6,000’ 8,000’ 10,000’
CF353C 34 36 37 38 41
CF357C 34 36 37 38 41
CF503C 3.4mm 31 31 32 35
CF557C 29 30 30 31 32
CF653C 26 27 28 29 30
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT
L.P. GAS
SPECIFIC ELEVATIONS
Model 0 to 2,000 - 4,000 - 6,000 - 8,000 -
No. 2,000’ 4,000’ 6,000’ 8,000’ 10,000’
CF354C 50 52 52 53 54
CF358C 50 52 52 53 54
CF504C 45 47 48 49 50
CF558C 2.15mm 45 47 48 49
CF654C 42 43 44 45 47
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT
PILOT ADJUSTMENT
Locate the pilot adjustment screw on the valve. The pilot
flame should surround at least the top 3/8” of the powerpile
(pilot generator) or flame sensor (see Figure 8). The pilot
is unregulated so it will be operating at inlet line pressure
(maximum 7” w.c. for Natural Gas and 11” w.c. for
Propane Gas). To decrease the pilot flame, turn the screw
clockwise (approximately six full turns to bottom of pilot
light channel) until you produce sufficient flame at the
minimum noise level.
PILOT FLAME ADJUSTMENT
PILOT FLAME SHOULD ENVELOP 3/8 TO ½ INCH
OF THE TIP OF THE GENERATOR.
3/8” TO 1/2”
STANDING PILOT
FIGURE 8-A
3/8” TO
1/2”
I.I.D. PILOT
FIGURE 8-B
Page 9
Summary of Contents for CF353C-R and
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