John Wood Commercial - AJWSC - Manual (Page 6)

Unpacking the Water Heater
Important: Do not remove any permanent instructions,
labels, or the data label from outside of the water heater or
on the inside of panels.
• Remove exterior packaging and place installation compo-
nents aside.
• Inspect all parts for damage prior to installation and start-
up.
• Completely read all instructions before attempting to
assemble and install this product.
If you observe damage to the water heater or any of its com-
ponents, DO NOT ASSEMBLE OR INSTALL IT OR MAKE
ANY ATTEMPT TO FIX THE DAMAGED PART(S). Contact
the place of purchase for further instructions.
• After installation, dispose of packaging material in the
proper manner.
Location Requirements
• Select a location near the center of the water piping sys-
tem. The water heater must be installed indoors and in a
vertical position on a level surface. DO NOT install in
bathrooms, bedrooms, or any occupied room normally
kept closed.
• Locate the water heater as close to the gas vent as prac-
tical. Consider the vent system piping and combustion air
supply requirements when selecting the water heater
location. The venting system must be able to run from the
water heater to termination with minimal length and
elbows.
• Locate the water heater near the existing gas piping. If
installing a new gas line, locate the water heater to mini-
mize the pipe length and elbows.
• The water heater should be located in an area not subject
to freezing temperatures. Water heaters located in
unconditioned spaces (i.e. attics, basements, etc.) may
require insulation of the water piping and drain piping to
protect against freezing. The drain and controls must be
easily accessible for operation and service. Maintain
proper clearances as specified on the data plate.
• The operation of air-moving devices such as exhaust
fans, ventilation systems, clothes-dryers, fire-places, etc.,
can affect the proper operation of the water heater. Note:
Special attention must be given to the location of these
devices and the conditions they may create. Flow rever-
sal of flue gases may cause an increase of carbon
monoxide inside of the dwelling.
In Earthquake Zones
Note: The water heater must be braced, anchored, or
strapped to avoid moving during an earthquake. Contact
local utilities for code requirements in your area.
Important: If installing over carpeting, the carpeting must
be protected by a metal or wood panel beneath the water
heater. The protective panel must extend beyond the full
width and depth of the water heater by at least 76mm (3 in.)
in any direction, or if in an alcove the entire floor must be
covered by the panel. The panel must be strong enough to
carry the weight of the water heater when full of water.
Figure 2 may be used as a reference guide to locate the
specific clearance locations. A minimum of 610mm (24 in.)
of front clearance and 102mm (4 in.) on each side should be
provided for inspection and service.
Clearances and Accessibility
Notice: Minimum clearances from combustible materials
are stated on the data plate located on the front of the water
heater.
III) INSTALLATION
WARNING
Excessive Weight Hazard
Use two or more people to move and install
water heater. Failure to do so can result in
back or other injury.
IMPORTANT:
This water heater must be installed strictly in accordance
with the instructions enclosed, and local electrical, fuel
and building codes. It is possible that connections to the
water heater, or the water heater itself, may develop
leaks. IT IS THEREFORE IMPERATIVE that the water
heater be installed so that any leakage of the tank or relat-
ed water piping is directed to an adequate drain in such a
manner that it cannot damage the building, furniture, floor
covering, adjacent areas, lower floors of the structure or
other property subject to water damage. This is particular-
ly important if the water heater is installed in a multi-story
building, on finished flooring or carpeted surfaces. GSW
WILL NOT ASSUME ANY LIABILITY for damage caused
by water leaking from the water heater, pressure relief
valve, or related fittings. Select a location as centralized
within the piping system as possible. In any location
selected, it is recommended that a suitable drain pan be
installed under the water heater. This pan must limit the
water level to a MAXIMUM depth of 45mm (1 3/4 in.) and
have a diameter that is a minimum of 50mm (2 in.) greater
than the diameter of the water heater. Suitable piping shall
connect the drain pan to a properly operating floor drain.
When used with a fuel-fired heater, this drain pan must not
restrict combustion air flow.
– 6 –
Figure 1 Drain Pan Installation
Pipe to
adequate
drain
45mm max.
(1¾ in.)
At least 50mm (2 in.) greater than
the diameter of the water heater.