6
WARNING
Adequate combustion and ventilation air must be
provided to assure proper combustion.
I. Pre-Installation
A.Installation must conform to the requirements of
the authority having jurisdiction. In the absence
of such requirements, installation must conform
to the National Fuel Gas Code, NFPA 54/ANSI
Z223.1, and/or CAN/CGA B149.1 Natural Gas
and Propane Installation Code. Where required
by the authority having jurisdiction, the installation
must conform to the Standard for Controls and
Safety Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1.
B. Thewaterheaterisnotdesigncertiedfor
installationoncombustibleooring.Thewater
heater must not be installed on carpeting.
C. Provide clearance between water heater jacket
and combustible material in accordance with local
reordinance.Refertopage4ofthismanual
for minimum listed clearance from combustible
material.
D. Installonleveloor.Forbasementinstallation
provideconcretebaseifoorisnotperfectlylevel
orifwatermaybeencounteredonooraround
water heater. Floor must be able to support
weight of water heater, water and all additional
system components.
E. Protect gas ignition system components from
water (dripping, spraying, rain, etc.) during
water heater operation and service (circulator
replacement, condensate trap service, control
replacement, etc.).
F. Provide combustion and ventilation air in
accordance with applicable provisions of local
building codes or: USA - National Fuel Gas
Code, NFPA 54/ANSI Z223.1, Section 5.3, Air for
Combustion and Ventilation; Canada - Natural Gas
Installation Code, CAN/CGA - B149.1, or Propane
Installation Code, CAN/CGA - B.149.2, Part 5,
Venting Systems and Air Supply for Appliances.
G. Locate the water heater in an area where leakage
of the appliance or connections will not result in
damage to the area adjacent to the appliance or to
loweroorsofthestructure.Whensuchlocation
cannot be avoided it is recommended that a
suitable drain pan, adequately drained, be
installed under the appliance; however, the
panmustnotrestrictcombustionairow.
H. Provide adequate combustion and ventilation air
required for operation of the water heater. Refer
to the venting and combustion air sections of this
manualforspecicinstructions.
I. Provide adequate clearance for servicing and
proper operation.
J. For other than direct vent applications, the
appliance must be located as close as possible to
a chimney or gas vent.
The following guideline is based on the National Fuel
Gas Code, NFPA 54/ANSI Z223.1.
1. Determine volume of space (boiler room).
Rooms communicating directly with space
(through openings not furnished with doors) are
considered part of space.
Volume [ft³] = Length [ft] x Width [ft] x Height [ft]
2. Determine Total Input of all appliances in
space. Round result to nearest 1,000 Btu per
hour (Btuh).
3. Determine type of space. Divide Volume by
Total Input.
a. If result is greater than or equal to 50 ft³
per 1,000 Btuh, space is considered an
unconned space.
b. If result is less than 50 ft³ per 1,000 Btuh,
space is considered a conned space.
4. Determine building type. A building of
unusually tight construction has the following
characteristics:
a. Walls and ceiling exposed to outside
atmosphere have a continuous water vapor
retarder with a rating of 1 perm or less with
openings gasketed and sealed, and;
b. Weather-stripping has been added on
openable windows and doors, and;
c. Caulking or sealants applied in joints around
window and door frames, between sole
platesandoors,betweenwall-ceiling
joints, between wall panels, at plumbing
and electrical penetrations, and at other
openings.
WARNING
Carefully read all instructions before installing
water heater. Failure to follow all instructions in
proper order can cause personal injury or death.
