State Water Heaters 310C Installation Manual And Owner's Manual page 14

This is a Category III appliance and must be vented accordingly. For best results, a vent system should be
as short and straight as possible.
• This water heater is a Category III appliance and must be vented accordingly with concentric
vent approved for use with Category III or Special BH type gas vent.
• Follow the vent pipe manufacturer's instructions and the instructions in this manual when
installing the vent pipe.
• Do not common vent this appliance with any other vented appliance. (Do not terminate vent
inside a chimney. If the vent must go through the chimney, it must run through the top of the
chimney and terminate with the roof termination listed on page 10. Install per the vent manu-
facturer's instructions.)
• When the horizontal vent run exceeds 5 ft. (1.5 m), support the vent run at 3 ft. (0.9 m) intervals
with overhead hangers.
• The maximum length of exhaust vent piping must not exceed 43 ft. (13.1 m) (deducting 5 ft. (1.5
m) for each 87° elbow used in the venting system). Do not use more than 4 pieces of 87° elbows.
Vent type Diameter
3 in. / 5 in.
Concentric
(80 mm / 125 mm)
For each 87° elbow added, deduct 5 ft. (1.5m) from max. vent
length. Two 45° elbows are equivalent to one 87° elbow.
-DIP switch settings for Vent length-
Vent
length
0 to 10 ft.
(0 to 3 m)
DEFAULT
Model
ON 1 2 3 4 5 6 7 8 9 10
110C
and
OFF
310C
No. 6 : OFF
models
No. 7 : OFF
No. 8 : ON
1 2 3 4 5 6 7 8
510C ON
model
OFF
(Upper bank
No. 3 : OFF
of DIP
No. 4 : OFF
switches)
No. 5 : ON
The black squares indicate the positions of the DIP switches for vent length.
•
For the 110C and 310C : Only adjust DIP switch No. 6 , No. 7, and No. 8.
For the 510C : Only adjust DIP switch No. 3, No. 4, and No. 5
WARNING
DO NOT adjust the other DIP switches for vent length.
•
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-Vent length and No. of Elbows-
Max. Vertical and
Max. No. of
Horizontal (Total)
87° Elbows
Vent Length
4 43 ft. (13.1 m )
11 to 20 ft.
(3.1 to 6.1 m)
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : OFF
No. 8 : ON
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : ON
No. 4 : OFF
No. 5 : ON
14
Page
Installation Manual
No. of 87° Max. Vertical
Elbows or Horizontal Vent Length
0 43 ft. (13.1 m)
1 38 ft. (11.6 m)
2 33 ft. (10.1. m)
3 28 ft. (8.5 m)
4 23 ft. (7.0 m)
Excludes the Concentric termination
21 to 30 ft.
(6.2 to 9.1 m) (9.2 to 13.1 m)
ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10
OFF OFF
No. 6 : OFF
No. 7 : ON
No. 8 : ON
ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8
OFF OFF
No. 3 : OFF
No. 4 : ON
No. 5 : ON
on the upper bank
Installation
31 to 43 ft.
No. 6 : ON
No. 7 : ON
No. 8 : ON
No. 3 : ON
No. 4 : ON
No. 5 : ON
.