Instructions / Assembly

20
Vertical
12" (30cm)
Intake
2" (50mm)
or
3" (75mm)
Exhaust
2" (50mm)
or
3" (75mm)
Plastic Rain Cap*
(PRC-1)
*Not supplied with water
heater, order separately.
Increaser coupling**
**Not supplied with water heater,
order separately.
PVC-2CT
or
PVC-3CT***
*** 3" (75mm) pipe and 2"×3"Increaser couplings
require when using PVC-3CT.
Increaser couplings need to be used just prior
to PVC-3CT.
2" pipe
3" pipe
3" pipe
2"×3"Increaser
coupling
e.g.) PVC-2CT installation
＜Maximum Vent length when using PVC-2CT or PVC-3CT＞
Number of
pieces**
Number of
pieces**
Short length using 3" (75mm) pipe
Short length using 2" (50mm)pipe
Long length using 2" (50mm)pipe
Long length using 3" (75mm) pipe
** Table assumes straight vent pieces are 3’ (0.9m) each.
Shorter or longer vent pieces may also be used up to
the maximum allowed vent length.
** Table assumes straight vent pieces are 3’ (0.9m) each.
Shorter or longer vent pieces may also be used up to
the maximum allowed vent length.
Vent length condition
࠙
Dip Switch Adjustment
ࠚ
Dip switches
1
#7 #8
ON= OFF=
2
3
4
2” Pipe 3” Pipe
* Not including the termination.
* Not including the termination.
3 0.9 1
6 1.8 2
9 2.7 3
12 3.6 4
15 4.5 5
18 5.4 6
21 6.3 7
24 7.2 8
27 8.1 9
30 9.0 10
33 9.9 11
36 10.8 12
39 11.7 13
42 12.6 14
45 13.5 15
48 14.4 16
51 15.3 17
54 16.2 18
57 17.1 19
60 18.0 20
6
Vent length* Elbows
ft m0 45123
30.9 1
61.8 2
92.7 3
12 3.64
15 4.55
18 5.46
21 6.37
24 7.28
27 8.19
30 9.010
33 9.911
36 10.8 12
39 11.7 13
42 12.614
45 13.515
48 14.416
51 15.317
54 16.218
57 17.119
60 18.020
63 18.921
66 19.822
69 20.723
72 21.624
75 22.525
78 23.426
81 24.327
84 25.228
87 26.129
90 27.030
93 27.931
96 28.832
99 29.733
100 30.034
Vent length* Elbows
ft m0 56781234
1
2
1
3
4
3" (75mm) pipe and 2"×3" increaser
coupling requires when using PRC-1.
PRC-1
3" (75mm) pipe
2" (50mm) pipe
2"×3" increaser coupling