Bryant BW9 - Page 14

b. Sidewall terminations—Locate assembly through sidewall with rain shield positioned no more than 1-in. from wall
as shown in Fig. 11.
NOTE: Do not allow insulation or other materials to accumulate inside of pipe assembly when installing it through hole.
NOTE: For any additional questions concerning the Concentric Vent Kit, consult kit installation instructions.
5. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping.
6. Check required dimensions as shown in Fig. 10 and 11.
Fig. 10—Concentric Vent and Combustion-Air Roof Termination
A01381
COMBUSTION
AIR
MAINTAIN 12 IN.
(18 IN. FOR CANADA)
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF.
VENT
RAINSHEILD
Fig. 11—Concentric Vent and Combustion-Air Side Termination
A01382
MAINTAIN 12 IN.CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE
WHICHEVER IS
GREATER
COMBUSTION AIR
VENT
1″ MAXIMUM
ROOF
OVERHANG
12″ MINIMUM
RAINSHIELD
Table 5—BW9 Vent Table
MODEL VENT DIAMETER MINIMUM LENGTH
MAXIMUM LENGTH OF PIPE PER NUMBER OF ELBOWS
Number of 90 Degree Elbows
0123456
BW9–100
2-in. 7 ft 16 ft 14-1/2 ft 13 ft 11-1/2 ft 10 ft 8-1/2 ft 7 ft
3-in. 15 ft 83 ft 80 ft 77 ft 74 ft 71 ft 68 ft 65 ft
BW9–075
2-in. 7 ft 21-1/2 ft 20 ft 18-1/2 ft 17 ft 15-1/2 ft 14 ft 13-1/2 ft
3-in. 20 ft 97 ft 94 ft 91 ft 89 ft 86 ft 83 ft 80 ft
BW9–050
2-in. 7 ft 21-1/2 ft 20 ft 18-1/2 ft 17 ft 15-1/2 ft 14 ft 14 ft
3-in. 20 ft 97 ft 94 ft 91 ft 89 ft 86 ft 83 ft 80 ft
1. Vent pipe lengths include the first five (5) feet of factory-supplied CPVC.
2. Do not use more than size (6) elbows plus termination elbows.
3. Length of pipe is measured from the side of the boiler jacket or the exhaust vent tee.
4. (2) 45° elbows count as one 90° elbow.
5. Long radius elbows are recommended.
6. Any field supplied vent fittings used with 5 ft of factory-supplied CPVC must be same grade of CPVC.
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