Venting
When installing the venting system, make sure to
follow all local codes or, in the absence of local
codes, CSA B149.1 in Canada and/or the National
Fuel Gas Code, ANSI Z223.1 in the United
States. Never operate the water heater unless
it is properly ventilated to the outdoors and has
adequate air supply for proper operation. Failure
to properly install the venting system could result
in property damage, personal injury, or death.
Draft Hood installation
The water heater must be vented using the draft
hood provided by the manufacturer. Before installing
the draft hood, check to make sure that the flue baffle
has been installed in the flue tube. If the flue baffle
is missing, immediately contact the dealer where
the water heater was purchased. Never operate the
water heater without the flue baffle installed.
To install the draft hood, place it over the flue opening
on the top of the water heater. When installing the
draft hood do not alter it in any way.
UG30 and UG40 Models
Line up the holes in the draft hood’s legs with those of
the water heater’s top and secure the draft hood using
the two (2) sheet metal screws provided (see Figure 7a).
UG50 and UG60 Models
Line up the legs of the draft hood with the holes with
those of the water heater’s top and snap into position.
Then insert the two (2) sheet metal screws provided
into the same holes to secure legs down into place
(see Figure 7b).
Venting System
The venting system must be attached to the draft
hood to connect the water heater to the gas vent
or chimney. The vent pipe connecting to the water
heater must be of the same size as the draft hood.
It is highly recommended to install this water heater
on a separate venting system from other appliances.
In some installations, proper venting may require the
use of a larger diameter vent pipe and/or combined
venting with other appliances. Consult the vent tables
in the CSA B149.1 in Canada and/or the National
Fuel Gas Code, ANSI Z223.1 in the United States to
correctly size the vent pipe.
When connecting the vent pipe to the water heater
the following instructions must be followed:
• Install the vent pipe in such a way as to avoid any
unnecessary bends that could create resistance to
the flow of combustion gases.
• The horizontal length of the vent pipe must not
exceed 75% of the vertical vent height, in no case
shall it exceed twenty (20) feet (6.1 m) horizontally.
• All horizontal runs must have a minimum rise of
1/4 inch per foot (21 mm/m) of run (See Figure 8).
• All joints must be securely fastened with sheet
metal screws or other approved means.
• All single wall vent piping must maintain a minimum
of six (6) inches (15.2 cm) of clearance from
combustible materials.
• Venting systems made with single wall piping
cannot pass through any attic, inside wall,
crawlspace, confined space, or any floor.
• The vent piping must be accessible for inspection,
cleaning, and replacement.
When the installation is complete, visually inspect
the venting system to make sure that all joints are
properly connected and all instructions have been
followed. Failure to properly install the venting
system could result in property damage, personal
injury, or death.
Water Piping
Refer to Figure 8 for a typical installation. Use of
this layout should provide a trouble-free installation
for the life of the water heater. Before making the
plumbing connections, locate the COLD water inlet
and the HOT water outlet. These fittings are both
3/4” NPT male thread. Make sure that the dip tube is
installed in the cold water inlet. Install a shut-off valve
close to the water heater in the cold water line. It is
recommended that unions be installed in the cold and
hot water lines so that the water heater can be easily
disconnected, if servicing is required.
7
INSTALLATION INSTRUCTIONS
Draft Hood
Figure 7a
Draft Hood
Figure 7b
