Use and Care Manual

INSTALLATION INSTRUCTIONS
Turn on the gas and water to the water heater by
opening the shut-off valves.
Minimum / Maximum vent lengths at B-1, B-2, C-1
and C-2 setting are as follows:
Minimum Vent Length (intake/out-
let) each at B-1 and C-1 Setting
Maximum Vent Length (intake/out-
let)each at B-1 and C-1 Settings
Minimum / Maximum Vent Length
(intake/outlet)each at B-2 and
C-2 Settings
WARNING:
This water heater requires the correct DIP switch
adjustments per vent length and altitude for proper
operation. Incorrect DIP switch adjustments may cause
improper water heater operation resulting in serious injury
or death.
NOTICE:
It is recommend to have a vent length as short as possible.
Input rate at high altitude naturally is derated. In addition
to that, input rate of the water heater decreases more if
there is restriction (pressure drop) in the venting system.
Refer to input rate reduction table due to vent length on
page 36. Actual input rate reduction may be different at
each installation.
High-Altitude DIP Switch Adjustments (cont.)
76
10
Number of
90° Elbows
Maximum Length of 2"
Straight Pipe
Maximum Length of 3"
Straight Pipe
1 22.0 ft (6.7 m) 148.5 ft (45.3 m)
2 19.0 ft (5.8 m) 147.0 ft (44.8 m)
3 16.0 ft (4.9 m) 145.5 ft (44.3 m)
4 13.0 ft (4.0 m) 144.0 ft (43.9 m)
5 10.0 ft (3.0 m) 142.5 ft (43.4 m)
6 7.0 ft (2.1 m) 141.0 ft (43.0 m)
Number of
90° Elbows
Maximum Length of 2"
or 3" Straight Pipe
1 1.0 ft (0.3 m)
Number
of 90°
Elbows
Minimum Length of
2" Straight Pipe
Maximum Length of
2" Straight Pipe
3" Pipe
1 22.0 ft (6.7 m) 57.0 ft (17.4 m) Not allowed
2 19.0 ft (5.8 m) 54.0 ft (16.5 m) Not allowed
3 16.0 ft (4.9 m) 51.0 ft (15.5 m) Not allowed
4 13.0 ft (4.0 m) 48.0 ft (14.6 m) Not allowed
5 10.0 ft (3.0 m) 45.0 ft (13.7 m) Not allowed
6 7.0 ft (2.1 m) 42.0 ft (12.8 m) Not allowed