Provide Air Openings To Room; Flooring And Foundation; Residential Garage Installation; Vent And Air Piping - Lochinvar ARMOR 151 Installation And Operation Manual

1
Determine water heater location

Provide air openings to room:

Armor water heater alone in equipment room
1. No air ventilation openings into the equipment room are
needed when clearances around the Armor water heater are
at least equal to the SERVICE clearances shown in FIG.'s
1-1 and 1-2. For spaces that do NOT supply this clearance,
provide two openings as shown in FIG. 1-1. Each opening
must provide one square inch free area per 1,000 Btu/hr of
water heater input.
Armor water heater in same space with other gas or
oil-fired appliances
1. Follow the National Fuel Gas Code (U.S.) or CSA B149.1
(Canada) to size/verify size of the combustion/ventilation
air openings into the space.
The space must be provided with combustion/
WARNING
ventilation air openings correctly sized for all
other appliances located in the same space as
the Armor 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 Armor water heater because it takes its combustion air
from outside (direct vent installation).

Flooring and foundation

Flooring
The Armor water heater is approved for installation on
combustible flooring, but must never be installed on carpeting.
Do not install the water heater on carpeting
WARNING
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.
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Installation & Operation Manual

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.

Vent and air piping

The Armor 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 General Venting Section. Note prevention
of combustion air contamination below when considering vent/
air termination.
Vent and air 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
Armor 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 Armor water heater as described
in this manual. Do not terminate vent/air in locations that
can allow contamination of combustion air. Refer to Table 1A,
page 11 for products and areas which may cause contaminated
combustion air.
You must pipe combustion air to the water
WARNING
heater air intake. Ensure that the combustion
air will not contain any of the contaminants
in Table 1A, page 11. 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.