Installation Sheet

24 Page
Installaon
Installaon Manual

4" (102 mm)
stainless steel
vent straight pipe
Exhaust vent collar
of the Indoor models
(Female)
Intake vent collar
(Female)
4" (102 mm)
stainless steel
vent straight pipe

1. Connect 4" (102 mm) stainless steel vent
straight pipes directly on the exhaust/
intake vent collar of the water heater.
Exhaust vent collar
of the Indoor models
(Female)
4" (102 mm)
stainless steel
vent straight pipe
Intake vent collar
(Female)
4" (102 mm)
elbow with
bird screen
1. Connect a 4" (102 mm) stainless steel vent
straight pipes directly on the exhaust vent
collar of the water heater.
2. Connect a 4" (102 mm) elbow directly on
the intake vent collar of the water heater.

WARNING
 Regarding the clearances from the exhaust terminal to the air inlet or opening, refer
to pp. 28 to 30.
 Follow all vent system manufacturer’s instructions and all local codes.
 Use 4” (102 mm) Category III/IV approved or Special BH, single or double wall
stainless steel vent pipe.
Set DIP switches shown in the table below depending on the vent diameter and length.
WARNING
 DO NOT adjust any other DIP switches except the No. 3 and No. 4 of
the lower bank of DIP switches for the vent length.
 Turn off the power supply to the water heater before changing the
DIP switch settings.
 Failure to observe these warnings could lead to carbon monoxide
poisoning or death.
DIP switch settings :
Single pipe and Direct vent installations
Vent diameter
4" (102 mm)
venting
5 to 50 ft
(1.5 to 15.2m)
(DEFAULT)
51 to 100 ft
(15.3 to 30.5 m)
Lower bank
of
DIP switches
1 2 3 4 5 6 7 8
ON
No. 3 : O N
No. 4 : OFF
1 2 3 4 5 6 7 8
ON
No. 3 : OFF
No. 4 : OFF
Vent
length
DIP
switches
Lower bank of DIP switches