Service manual

150158 Rev. 2 August - 2010
5
Better combustion is achieved by avoiding numerous elbows
in the vent piping. Horizontal piping must be sloped upward
at least 1/4 inch per linear foot of length. All connections in
venting system must be securely fastened with sheet metal
screws or other approved method. Check local codes and
ordinances.
Failure to install a proper venting system can result in fire,
injury, or death.
Flue Damper - Refer to Figure 4 and follow these
installation instructions:
1. Remove the damper from the accompanying box shipped
within the crate.
2. Locate the collector outlet on top of the water heater. Place
the damper over the collector outlet and rotate as necessary
to a position in which the damper wiring plug can be fully
engaged with the connector on the side of the water heater.
3. Remove clip which holds damper vane closed. The damper
will then open by itself.
4. Being certain that the damper vane will travel freely from
the “closed” to “open” position, secure the flue damper to
the jacket top with sheet metal screws.
5. Connect the damper wiring plug to the connector on the
side of the water heater. Note: The plug and connector can
only be engaged one way (polarized).
6. The Lighting/Operating instructions are outlined on Page
13. The damper must be in the open position when the
water heater main burner is operating (the arrow on the
damper plate is in the “up” position when open. Be certain
the arrow is in a visible position when installed.)
Note: Modification to the flue damper or the draft
diverter may result in personal injury, property damage or
death. The flue damper and draft diverter are to be placed
in position and operation exactly as stated in these instruc-
tions without modification.
WATER CONNECTIONS
Installation - Refer to Figure 5 for typical installation. Con-
nect the hot and cold water supply to the water heater, hot to
the location market “HOT” and cold to the location marked
“COLD”. Note: If making cold water connection on top,
determine that the dip tube is in place. If sweat connections are
used, sweat tubing to adapter before attaching adapter to the
top cold water inlet as it may contain a nonmetallic dip tube.
When making these connections, use a good grade of pipe
joint compound. Be familiar with the location of the shut-off
valve in the cold water line feeding the water heater (See
Figure 5). If a valve is not present, one shall be installed as
shown in Figure 5.
Do not install a check valve or other device that would prevent
reverse flow of water (“closed system”) unless required by
local codes. A closed system will result in frequent operation
of the relief valve. Provisions must be made for protection
against thermal expansion in the event of a closed system (See
Page 1). Warranties do not cover pressure bulges and/or
deformities.
This water heater is capable of delivering high temperature
hot water at any faucet in the system. Care must be taken
whenever using hot water to avoid scalding injury. Certain
appliances require high temperature hot water (such as
dishwashers and automatic clothes washers). In order to
prevent potential scald injury, install an anti-scald tempering
valve in the water system.
GAS PIPING
Use clean black iron pipe or equivalent material approved by
local codes and ordinances for gas piping. Install a ground-
joint-union in the supply line as close to the water heater as
possible. A manual gas shut-off valve should be at least 5 feet
above floor level and readily accessible. A drip leg (consisting
of a pipe tee, 4 inch nipple, and a cap) should be installed as
shown in Figure 5.
Make sure the gas supplied to the heater is the same type as
listed on the rating plate.
DO NOT ATTEMPT TO USE THIS
WATER HEATER WITH ANY GAS OTHER THAN THE
TYPE LISTED ON THE RATING PLATE.
Compound used for the connection of all gas piping should be
resistant to the action of liquefied petroleum (L.P.) gases.
Apply pipe dope sparingly to the male threads only. DO NOT
apply pipe dope to the gas valve inlet. Make certain that no
pipe dope has become lodged in the inlet screen of the gas
valve. This will restrict the flow of gas. When attachment of
gas piping to gas valve inlet is made, extreme care must be
taken to prevent pipe dope from entering the gas valve inlet
and to avoid excessive torque to prevent cracking of the gas
valve inlet housing. The suggested maximum torque is 31.5
ft. lbs. The manufacturer of this water heater will not be liable
for any damage or injury caused as a result of a cracked gas
inlet from excessive torque.
CAUTION
Do not turn on electrical power to water heater until flue
damper is installed and the water heater is filled with water
.