11
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT / M) WITH
INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT*
UNIT SIZE
WINTER DESIGN MAXIMUM PIPE DI-
INSULATION THICKNESS†
TEMPERATURE AMETER (IN.)
0 3/8 1/2 3/4 1
042060
20_F / --- 6 . 7 _C 2 30 / 9.1 55 / 16.8 61 / 18.6 70 / 21.3 70 / 21.3
0_F / --- 1 7 . 8 _C 2 16 / 4.9 33 / 10.1 38 / 11.6 46 / 14.0 53 / 16.2
--- 2 0 _F / --- 2 8 . 9 _C 2 9/2.7 23 / 7.0 26 / 7.9 33 / 10.1 38 / 11.6
042080
060080
20_F / --- 6 . 7 _C 2 37 / 11.2 65 / 19.8 70 / 21.4 70 / 21.3 70 / 21.3
0_F / --- 1 7 . 8 _C 2 20 / 6.1 39 / 11.9 45 / 13.7 55 / 16.8 63 / 19.2
--- 2 0 _F / --- 2 8 . 9 _C 2 11 / 3.4 27 / 8.3 31 / 9.4 39 / 11.9 45 / 13.7
060100
20_F / --- 6 . 7 _C 2 --- 1 / 2 41 / 12.5 70 / 21.3 70 / 21.3 70 / 21.3 70 / 21.3
0_F / --- 1 7 . 8 _C 2 --- 1 / 2 21 / 6.4 42 / 12.8 48 / 14.6 59 / 18.0 68 / 20.7
--- 2 0 _F / --- 2 8 . 9 _C 2 --- 1 / 2 11 / 3.4 28 / 8.5 33 / 10.1 41 / 12.5 49 / 14.9
060120
20_F / --- 6 . 7 _C 3 49 / 14.9 70 / 21.3 70 / 21.3 70 / 21.3 70 / 21.3
0_F / --- 1 7 . 8 _C 3 26 / 7.9 51 / 15.5 58 / 17.7 70 / 21.3 70 /21.3
--- 2 0 _F / --- 2 8 . 9 _C 3 15 / 4.6 35 / 10.7 40 / 12.2 50 / 15.2 59 / 18.0
* Pipe length (ft/m) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cann ot exceed total allowable
pipe length as specified in Table.
†Insulation thickness based on R value of 3.5 per in.
CONCENTRIC VENT (DIRECT VENT/2--PIPE ONLY) (ALL MODEL SIZES)
C IN. DIA
B IN. DIA PVC
VENT/EXHAUST
1
3
/
16
B IN. DIA PVC
INTAKE/COMBUSTION AIR
D
E
F
A
1
1
/2
A97110
Dimensions (in.)
KIT PART NO. A* B C D{ E F
KGAVT0701CVT 33---3/8 2 3 --- 1 / 2 16--- 5/8 6 --- 1 / 4 5 --- 3 / 4
KGAVT0801CVT 38---7/8 3 4 --- 1 / 2 21--- 1/8 7 --- 3 / 8 6 --- 1 / 2
* Dimension A will change proportionally as dimension D is lengthened or shortened.
{ Dimension D may be lengthened to 60 in. maximum. Dimension D may also be shortened by cutting the pipes provided in the kit to 12 in. minimum.
355BAV
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