A.O. Smith BTH 300 - INTAKE AIR CONDENSATE TEE INSTALLATION; VERTICAL TERMINATION INSTALLATION; DIRECT VENT AIR INTAKE MOISTURE PROTECTION

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3” PIPE FACTORY
INSTALLED
6” PIPE FIELD
SUPPLIED
4” PIPE FIELD
SUPPLIED
6” x 4” REDUCER
FIELD SUPPLIED
4” x 3” REDUCER
FACTORY INSTALLED
INTAKE AIR CONNECTION
INTAKE AIR CONNECTION
INTAKE AIR
COMBUSTION
BLOWER
Figure 18
DIRECT VENT AIR INTAKE MOISTURE PROTECTION
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VERTICAL TERMINATION INSTALLATION
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INTAKE AIR CONDENSATE TEE INSTALLATION
INSTALL TEE FITTING AS CLOSE
TO WATER HEATER INTAKE AIR
CONNECTION AS POSSIBLE
FIELD SUPPLIED
4” x 4 ” x 1/2” TEE
WITH HOSE BARB
FITTING INSTALLED
FACTORY
INSTALLED
INTAKE AIR
CONNECTION
(4” x 3” REDUCER)
INTAKE AIR
CONNECT FIELD
SUPPLIED FLEXIBLE
DRAIN HOSE TO BARB
FITTING AND FORM A
LOOP WATER TRAP IN
DRAIN HOSE
RUN DRAIN HOSE
TO SUITABLE FLOOR
DRAIN SEPARATELY
FROM OTHER
CONDENSATE DRAINS
Figure 16
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Do not obstruct water heater air intake.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
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INTAKE AIR CONNECTION DETAIL
4” x 3” REDUCER
COUPLING - FACTORY INSTALLED
INTAKE AIR SCREEN
(remove for Direct Vent)
Figure 17