Installation Guide

17
Explosion Hazard
• Use a new CSA approved gas supply line.
• Install a shut-off valve.
• Do not connect a natural gas water heater to an
L.P. gas supply.
• Do not connect an L.P. gas water heater to a
natural gas supply.
• Failure to follow these instructions can result in
death, explosion, or carbon monoxide poisoning.
WARNING
GAS REQUIREMENTS
IMPORTANT: Read the rating plate to be sure the water heater is made
for the type of gas you will be using in your home. This information
will be found on the rating plate located near the gas control valve/
thermostat. If the information does not agree with the type of gas
available, do not install or light. Call your dealer.
NOTE: An odorant is added by the gas supplier to the gas used by
this water heater. This odorant may fade over an extended period of
time. Do not depend upon this odorant as an indication of leaking gas.
GAS PIPING
The gas piping must be installed according to all local and state
codes or, in the absence of local and state codes, the “National Fuel
Gas Code”, ANSI Z223.1 (NFPA 54)-current edition. Manufactured
home manufacturers must conform with “The Manufactured Home
Construction and Safety Standard, Title 24 CFR, Part 3280”.
Tables 3 and 4 on page 19 provide a sizing reference for commonly
used gas pipe materials. Consult the “National Fuel Gas Code” for
the recommended gas pipe size of other materials.
NOTE: Use pipe joint compound or Tefl on
®
tape marked as be-
ing resistant to the action of petroleum [Propane (L.P.)] gases.
Refer to Figure 27 as you review the following items:
1. Install a readily accessible manual shut-off valve in the gas
supply line as recommended by the local utility. Know the
location of this valve and how to turn off the gas to this unit.
2. Install a sediment trap (if not already incorporated as part of
the water heater) as shown. The sediment trap must be no
less than three inches long for the accumulation of dirt, foreign
material, and water droplets. See also Sediment Traps.
3. Install a ground joint union between the gas control valve/
thermostat and the manual shut-off valve. This is to allow easy
removal of the gas control valve/ thermostat.
4. Turn the gas supply on and check for leaks. Test all connections
by brushing on an approved noncorrosive leak-detection
solution. Bubbles will show a leak. Correct any leak found.
Tefl on
®
is a registered trademark of E. I. du Pont de Nemours and Company.
CHECK WITH
LOCAL UTILITY
FOR MINIMUM HEIGHT
3” (7.62cm) MINIMUM
SEDIMENT TRAP
GROUND
JOINT
UNION
MANUAL GAS
SHUT-OFF VALVE
FIGURE 27.
GAS PRESSURE
WARNING
Explosion Hazard
• Gas leaks can not always be detected by smell.
• Gas suppliers recommend that you use a gas
detector approved by UL or CSA.
• For more information, contact your gas supplier.
• If a gas leak is detected, follow the “What to do if you
smell gas” instructions on the cover of this manual.
IMPORTANT: The gas supply pressure must not exceed the maxi-
mum supply pressure as stated on the water heater’s rating plate.
The minimum supply pressure is for the purpose of input adjustment.
GAS PRESSURE TESTING
IMPORTANT: This water heater and its gas connection must be leak
tested before placing the appliance in operation.
• If the code requires the gas lines to be tested at a pressure
exceeding 14” W.C. (3.5 kPa), the water heater and its manual
shut-off valve must be disconnected from the gas supply piping
system and the line capped.
• If the gas lines are to be tested at a pressure less than 14” W.C.
(3.5 kPa), the water heater must be isolated from the gas supply
piping system by closing its manual shut-off valve.
U.L. recognized fuel gas and carbon monoxide (CO) detectors are
recommended in all applications and should be installed using the
manufacturer’s instructions and local codes, rules and regulations.
NOTE: Air may be present in the gas lines and could prevent the pilot
from lighting on initial start-up. The gas lines should be purged of air
by a qualifi ed technician after installation of the gas piping system.
While purging the gas piping system of air, ensure that the fuel is not
spilled in the area of the water heater installation, or any source of
ignition. If the fuel is spilled while purging the piping system of air
follow the “WHAT TO DO IF YOU SMELL GAS” instructions on the
cover of this manual.