ing the vent piping, make sure that the vent system
layout has been properly planned. Make sure that
the flue baffle has been installed in the flue tube.
If the baffle is not present, immediately contact
the dealer where the water heater was purchased.
NEVER
operate the water heater without the flue
baffle installed. Verify that the location of the water
heater respects all clearances from combustible
material, all venting requirements (see Table 1),
and that the vent terminations will be installed as
specified by all local codes or, in the absence of local
codes, the latest edition of CAN/CSA B149.1, Natural
Gas and Propane Installation Code, in Canada, and/
or the latest edition of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54, in the United States (see
Figure 2)
.
This water heater must be vented directly to the
outdoors, either horizontally through the wall or
vertically through the roof. The venting must not be
attached to an existing chimney, or in common with
any other appliance, and must not be insulated. If
possible, locate the water heater so that the venting
length and number of elbows are kept to the mini-
mum necessary to reach the outside.
Only three (3) inch (7.6 cm) schedule 40 PVC or
CPVC pipe and fittings may be used to vent this
water heater. A 90˚ elbow (supplied in the box)
must also be installed at the end of the air intake
piping to serve as the termination. The piping
and all the fittings must be permanently joined
using the appropriate primer and solvent-based
cement. Horizontal runs of vent pipe must be sup-
ported every three (3) feet (91 cm) and vertical runs
of vent pipe must be supported every five (5) feet
(1.5 m).
Plastic vent systems installed in Canada must be
certified to the STANDARD FOR TYPE BH GAS
VENTING SYSTEMS, ULC S636. Components
of the certified vent system must not be inter-
changed with other vent systems or unlisted
pipe/fittings. Plastic components and specified
primers and glues of the certified vent system
must be from a single vent system manufac-
turer and not intermixed with other vent system
manufacturer’s vent system parts unless those
are certified to be used with this system. Plastic
vent systems shall also be installed such that the
first three (3) feet (91 cm) of pipe from the water
heater outlet is readily accessible for visual
inspection. The air intake system does not have
to meet the requirement of ULC S636, so regular
schedule 40 PVC or CPVC pipes and fittings can
be used to convey the flow of fresh air to the
water heater.
Vent Pipe Preparation and Joining
ALWAYS
read and obey all safety messages print-
ed on the primer, cleaner, and cement containers.
Primer, cleaner, and cements are extremely flammable.
DO NOT
store these products near heat, sparks, or
flames. They are harmful or fatal if swallowed. Their
vapours are also harmful. They may irritate eyes
and can be absorbed through the skin. Failure to fol-
low these instructions can result in property damage,
personal injury, or death.
Primers, cleaners, solvents, and cements are avail-
able for PVC and CPVC pipe/fittings. When cement-
ing the pipe/fittings, make sure to use only materials
approved for the type of pipe/fittings to be installed
and in all cases, follow the vent pipe/fittings manu-
facturers joining instructions. Never use all-purpose
cements, commercial glues and adhesives to join
PVC or CPVC pipe/fittings.
1) Cut pipe ends squarely, removing all burrs and dirt.
2) Dry fit the pipe/fitting to be connected to make
sure they fit properly.
3) Clean the pipe/fitting with the proper primer or
cleaner.
4) Apply a thin coat of cement to the fitting, avoiding
puddling inside.
5) Apply a liberal coat of cement to the pipe, leaving
no voids.
6) QUICKLY assemble parts while cement is fluid!
If you wait too long, re-coat pipe/fitting.
7) Push pipe completely into socket of fitting, turn-
ing as it goes until it bottoms out.
8) Hold pipe and fitting together for 30 seconds.
Then carefully clean off any excess material with
5
INSTALLATION INSTRUCTIONS
MAXIMUM EQUIVALENT LENGTH FOR VENT AND AIR INTAKE PIPES —
DO NOT EXCEED MAXIMUM LENGTH OF PIPE
VENT AND AIR INTAKE PIPE DIAMETER
3 inch
Maximum length plus one 90
o
termination elbow
60.0 feet
(15.2 m)
Minimum length plus one 90
o
elbow and plus one 90
o
termination elbow
2.5 feet
(0.8 m)
One 45
o
radius elbow is equivalent, in straight pipe, to
4.0 feet
(1.2 m)
One 90
o
radius elbow is equivalent, in straight pipe, to
7.0 feet
(2.1 m)
Concentric Vent Termination (optional)
40.0 feet
(12.2 m)
Table 1
WARNING
DANGER