4
GENERAL
The installation must conform to these instructions and the local
code authority having jurisdiction. In the absence of local codes,
the installation must comply with the latest editions of the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 and the National Electrical
Code, NFPA 70. The former is available from the Canadian
Standards Association, 8501 East Pleasant Valley Road,
Cleveland, OH 44131, and both documents are available from
the National Fire Protection Association, 1 Batterymarch Park,
Quincy, MA 02269.
The appliance, when installed, must be electrically grounded in
accordance with local codes or in the absence of local codes with
the latest edition of the National Electrical Code, ANSI/NFPA 70.
LOCATION OF HEATER
The heater is design certified by the American Gas Association
for installation on combustible flooring in a closet having minimum
clearances from combustible material of: 0" clearance from sides
and rear, 4" from the front and 21" from the top. (Standard
clearance.) If clearances stated on the heater differ from standard
clearances, install water heater according to clearances stated
on heater.
A minimum clearance of 4" must be allowed for access to
replaceable parts such as the thermostats, drain valve and relief
valve.
Adequate clearance for servicing this appliance should be
considered before installation, such as changing the anodes, etc.
When installing the heater, consideration must be given to proper
location. Location selected should be as close to the wall as
practicable and as centralized with the water piping system as
possible.
CAUTION
In cold climates provide protection against freeze-up. THE
HEATER SHOULD BE LOCATED IN AN AREA WHERE
LEAKAGE OF THE TANK OR CONNECTIONS WILL NOT
RESULT IN DAMAGE TO THE AREA ADJACENT TO THE
HEATER OR TO LOWER FLOORS OF THE STRUCTURE.
When such locations cannot be avoided, a suitable drain pan
should be installed under the heater, see fig. 1. The pan should
have a minimum length and width of at least 2 inches greater
than the diameter of the heater and should be piped to an adequate
drain. Drain pans suitable for these heaters are available from
your dealer or A. O. Smith Water Products Company, 5621 W.
115th Street, Alsip, Illinois 60803.
WARNING
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A
CARPETED FLOOR. A FIRE HAZARD MAY RESULT.
Instead
the water heater must be placed on a metal or wood panel
extending beyond the full width and depth by at least 3 inches
(76.2mm) in any direction. If the heater is installed in a carpeted
alcove or closet, the entire floor shall be covered by the panel.
Also, see DRAINING.
WATER CONNECTIONS
Refer to figure 1 for typical installation. A suitable pipe thread
sealant must be used to prevent leakage.
WATER (POTABLE) HEATING AND SPACE
HEATING
1.
All piping components connected to this unit for space heating
applications shall be suitable for use with potable water.
2.
Toxic chemicals, such as those used for boiler treatment,
shall NEVER be introduced into this system.
3.
This unit may NEVER be connected to any existing heating
system or component(s) previously used with a non-potable
water heating appliance.
4.
When the system requires water for space heating at
temperatures higher than required for domestic water
purposes, a tempering valve must be installed. Please refer
to Fig. 2 for suggested piping arrangement.
FIGURE 2
Installation:
Do not install water heater
where flammable products will
be stored or used unless the
main burner and pilot flames are
at least 18" above the floor. This
will reduce, but not eliminate, the
risk of vapors being ignited by the
main burner or pilot flame.
