Takagi 540P Indoor User Manual

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.
 Do not mix parts or fittings of different material types, and do not mix pipe, fittings,
or joining methods from different manufacturers. Combustion exhaust can contain
carbon monoxide and must be properly vented outside. Breathing abnormal
amounts of carbon monoxide can result in serious injury or death.
Set DIP switches shown in the table below depending on the vent diameter and length.
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
WARNING
 To adjust vent length, adjust only the No. 3 and No. 4 DIP switches in the
LOWER bank of DIP switches. (See below.) DO NOT adjust the other DIP
switches.
 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 poison-
ing or death.

Takagi 540P Indoor Specifications

General

Brand	Takagi
Model	540P Indoor
Category	Water Heater
Language	English