Smith XWH 150, Инструкция по эксплуатации

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13
VENT AND AIR PIPING
The XP water heater requires a special vent system, designed
for pressurized venting.
The water heater is to be used for either direct vent installation
or for installation using indoor combustion air. When room air is
considered, see the Venting Installation section. Note prevention
of combustion air contamination below when considering vent/
air termination.
Exhaust vent and combustion air pipes must terminate near one
another and may be vented vertically through the roof or out a
side wall, unless otherwise specified. You may use any of the
vent/air piping methods covered in this manual. Do not attempt
to install the XP water heater using any other means.
Be sure to locate the water heater such that the vent and air piping
can be routed through the building and properly terminated. The
vent/air piping lengths, routing and termination method must all
comply with the methods and limits given in this manual.
PREVENT COMBUSTION AIR CONTAMINATION
Install air inlet piping for the XP water heater as described in
this manual. Do not terminate vent/air in locations that can allow
contamination of combustion air. Refer to the list on Page 14 for
products and areas which may cause contaminated combustion
air. In case, if any of these contaminants are stored in the
same room, the water heater must be installed in a direct vent
application.
You must pipe combustion air to the water heater air intake.
Ensure that the combustion air will not contain any of the
contaminants listed on Page 14. Contaminated combustion
air will damage the water heater, resulting in possible severe
personal injury, death or substantial property damage. Do not
pipe combustion air near a swimming pool, for example. Also
avoid areas subject to exhaust fumes from laundry facilities.
These areas will always contain contaminants.
PROVIDE AIR OPENINGS TO ROOM:
XP water heater alone in equipment room
1. No air ventilation openings into the equipment room are
needed when clearances around the XP water heater are at
least equal to the SERVICE clearances shown in Figure’s
2 and 3. For spaces that do NOT supply this clearance,
provide two openings as shown in Figure 2. Each opening
must provide one square inch free area per 1,000 Btu/hr of
water heater input.
XP water heater in same space with other gas or oil-fired
appliances
1. Follow the National Fuel Gas Code (U.S.) to size/verify size
of the combustion/ventilation air openings into the space.
The space must be provided with combustion/ ventilation air
openings correctly sized for all other appliances located in the
same space as the XP water heater.
Do not install the water heater in an attic.
Failure to comply with the above warnings could result in severe
personal injury, death, or substantial property damage.
2. Size openings only on the basis of the other appliances in
the space. No additional air opening free area is needed for
the XP water heater because it takes its combustion air from
outside (direct vent installation).
FLOORING AND FOUNDATION
Flooring
The XP water heater is approved for installation on combustible
flooring, but must never be installed on carpeting.
Do not install the water heater on carpeting even if foundation is
used. Fire can result, causing severe personal injury, death, or
substantial property damage.
If flooding is possible, elevate the water heater sufficiently to
prevent water from reaching the water heater.
RESIDENTIAL GARAGE INSTALLATION
Precautions
Take the following precautions when installing the appliance in
a residential garage. If the appliance is located in a residential
garage, it should be installed in compliance with the latest
edition of the National Fuel Gas Code, ANSI Z223.1 and/or CAN/
CGA-B149 Installation Code.
• Appliances located in residential garages and in adjacent
spaces that open to the garage and are not part of the
living space of a dwelling shall be installed so that all
burners and burner ignition devices are located not less
than 18 inches (46 cm) above the floor.
• The appliance shall be located or protected so that it is
not subject to physical damage by a moving vehicle.