John Wood Atmospheric Gas (Standard) - Manual (Page 18)

18
IMPORTANT INFORMATION ABOUT THIS WATER HEATER
This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor
ignition incident. The new technology used in meeting these standards makes this product more sensitive to installation
errors. Please review the following checklist and make any required installation upgrades or changes.
Questions? Contact Residential Technical Assistance by referencing the phone number on the front of the Installation
Instructions and Use & Care Guide.
Installation Checklist
Water Heater Location
Water heater location is important and can affect system
performance. Please check the following:
□
Installation area free of corrosive elements and
flammable materials.
□
Centrally located with the water piping system.
Located as close to the gas piping and vent pipe
system as possible.
□
Located indoors and in a vertical position. Protected
from freezing temperatures.
□
Proper clearances from combustible surfaces
maintained and not installed directly on a carpeted
floor.
□
Provisions made to protect the area from water
damage. Metal drain pan installed and piped to an
adequate drain.
□
Sufficient room to service the water heater. See
“Clearances and Accessibility” section of this
manual.
□
Water heater not located near an air moving device.
□
Is the installed environment dirty (excessive amounts
of lint, dirt, dust, etc.)? If so, the flame arrestor
located on the bottom of the water heater will need to
be cleaned periodically. Refer to the “Maintenance
of your Water Heater” section of this manual for
information on cleaning the flame arrestor.
Combustion Air Supply and Ventilation
Check for sufficient combustion air supply. Insufficient air
for the combustion of gas will result in the flame becoming
“lazy”, thereby allowing heat to build up in the combustion
chamber. This excessive heat will cause a thermal switch
on the door assembly to trip. Is the water heater installed in
a closet or other small, enclosed space? If so:
□
Are there openings for make-up air to enter and
exit the room/area?
□
Are the openings of sufficient size? Remember,
if there are other gas-fired or air-consuming
appliances in the same room, you need more
make-up air. Refer to the “Location Requirements”
section of this water heater manual for specific
requirements.
Fresh air not taken from areas that contain negative
pressure producing devices such as exhaust fans,
fireplaces, etc.
□
Is there a furnace/air handler in the same room
space as the water heater? If so, has a return air
duct system been attached that exits the room?
If so, check for leaks on the air duct system. If no
air duct system is present, correct immediately
by contacting a local Heating, Ventilation, Air-
Conditioning & Refrigeration (HVAC-R) authorized
service provider.
□
Fresh air supply free of corrosive elements and
flammable vapors.
□
Fresh air openings sized correctly with consideration
given to the blocking effect of louvers and grilles.
□
Ductwork is the same cross-sectional area as the
openings.
Vent Pipe System
Check for proper drafting at the water heater draft hood.
Refer to the “Checking the Draft” section of this manual for
the test procedure. If the procedure shows insufficient draft
is present, please check the following.
□
Draft hood properly installed.
□
Vent connectors securely fastened with screws and
supported properly to maintain six inch clearance.
□
Vent connector made of approved material and
sized correctly.
□
Vent pipe system installed according to all local
and provincial codes or, in the absence of local and
provincial codes, the “Natural Gas and Propane
Installation Code,” CAN/CSA B149.1-current edition.
□
Flue baffle properly positioned in the flue tube.
□
Check the vent system for restrictions/obstructions
and check the vent termination height. Refer to the
“Air Supply and Ventilation” section of this water
heater manual for specific requirements.
□
Recheck for sufficient combustion air supply.
Water System Piping
□
Temperature and pressure relief valve properly
installed with a discharge line run to an open drain
and protected from freezing.
□
All piping properly installed and free of leaks.
□
Heater completely filled with water.
□
Closed system pressure build-up devices installed.
□
Mixing valve (when applicable) installed
per manufacturer’s instructions (see “Water
Temperature Regulation” section).
Gas Supply and Piping
□
Gas type is the same as that listed on the water
heater data plate.
□
Gas line equipped with shut-off valve, union, and
drip leg.
□
Adequate pipe size and approved pipe material.
□
An approved noncorrosive leak detection solution
used to check all connections and fittings for
possible gas leaks. If such a solution is not
available, use a mixture of dish washing soap and
water (one part soap to 15 parts water) or children’s
soap bubble solution. Bubbles forming indicate a
leak. Correct any leak found.
TEFLON ® is a registered trademark of E.I. Du Pont De Nemours and
Company.