Install Vent And Combustion Air Piping; Air Inatke/ Vent Connections - Smith XWH 150 Instruction Manual

Breathing Hazard - Carbon Monoxide Gas
•
Install vent system in accordance with codes.
•
Do not operate water heater if exposed to flooding or
water damage
•
Special consideration must be taken with installations
above 10,000 feet (3,048 m) refer to high altitude
section of this manual.
•
Do not operate if soot buildup.
•
Do not obstruct water heater air intake with insulating
jacket or blanket.
•
Do not place chemical vapor emitting products near
water heater.
•
Gas and carbon monoxide detectors are available.
•
Never operate the heater unless it is vented to the
outdoors and has adequate air supply to avoid risks
of improper operation, fire, explosion or asphyxiation.
•
Analyze the entire vent system to make sure that
condensate will not become trapped in a section of
vent pipe and therefore reduce the open cross
sectional area of the vent.
Breathing carbon monoxide can cause brain damage or death.
Always read and understand the instruction manual.

INSTALL VENT AND COMBUSTION AIR PIPING

This water heater must be vented and supplied with combustion
and ventilation air as described in this section. Ensure the vent
and air piping and the combustion air supply comply with these
instructions regarding vent system, air system, and combustion
air quality.
Inspect finished vent and air piping thoroughly to ensure all are
airtight and comply with the instructions provided and with all
requirements of applicable codes. Failure to provide a properly
installed vent and air system will cause severe personal injury
or death.
This appliance requires a special venting system. Use only
approved stainless steel, PVC, CPVC or polypropylene pipe and
fittings listed in Tables 11, 12, and 14 for vent pipe, and fittings.
Failure to comply could result in severe personal injury, death, or
substantial property damage.
DO NOT mix components from different systems. The vent
system could fail, causing leakage of flue products into the living
space. Mixing of venting materials will void the warranty and
certification of the appliance.
Installation must comply with local requirements and with the
National Fuel Gas Code, ANSI Z223.1 for U.S. installations.
For closet and alcove installations, CPVC, polypropylene or
stainless steel material MUST BE used in a closet/alcove
structure. Failure to follow this warning could result in fire,
personal injury, or death.
Improper installation of venting systems may result in injury or
death.
Follow the instructions on Page 14 of this manual when removing
a water heater from an existing vent system.
Do not connect any other appliance to the vent pipe or multiple
water heaters to a common vent pipe. Failure to comply could
result in severe personal injury, death, or substantial property
damage.
This water heater vent and air piping can be installed through the
roof or through a sidewall. Follow the procedures in this manual
for the method chosen. Refer to the information in this manual to
determine acceptable vent and air piping length.
You may use any of the vent/air piping methods covered in this
manual. Do not attempt to install this water heater using any
other means.
You must also install air piping from outside to the water heater
air intake adapter unless following the Optional Room Air
instructions on Page 20 of this manual. The resultant installation
is direct vent (sealed combustion).

AIR INATKE/ VENT CONNECTIONS

1. Combustion Air Intake Connector (Figures 15 and 16) - Used
to provide combustion air directly to the unit from outdoors. A
fitting is provided on the unit for final connection. Combustion
air piping must be supported per guidelines listed in the
National Mechanical Code, Section 305, Table 305.4 or as
local codes dictate.
2. Vent Connector (Figure's 17 thru 21) - Used to provide a
passageway for conveying combustion gases to the outside.
A transition fitting is provided on the unit for final connection.
Vent piping must be supported per the National Building
Code, Section 305, Table 305.4 or as local codes dictate.
Figure 15. Near Water Heater Air Piping Models 150-200
Figure 16. Near Water Heater Air Piping Models 285-600
18