than
1
/
4
inch (6.4 mm) mesh. If the free area through
a particular design of louver or grille is known, it
should be used in calculating the size of opening
required to provide the free area specified. If the
design and free area is not known, it may be assumed
that wood louvers and grilles will allow 20-25% free
area and metal louvers and grilles will allow 60-75%
free area. Louvers and grilles must be installed in the
open position or interconnected with the water heater
so that they are opened automatically during water
heater operation.
Corrosive Atmospheres
If this water heater is to be installed in a beauty shop,
barber shop, photo processing lab, dry cleaning
establishment, a building with an indoor pool, or near
a chemical storage area, it is imperative that the
combustion and ventilation air be drawn from outside
these areas. These particular environments contain
products such as aerosol sprays, detergents, bleach-
es, cleaning solvents, refrigerants, and other volatile
compounds that, in addition to being highly flamma-
ble, become highly corrosive acid compounds when
burned. Exposure to such compounds can be
hazardous and lead to premature product failure.
Should the water heater fail, due to exposure to
such a corrosive atmosphere, the warranty is void.
Venting
When installing the venting system, make sure to
follow all local codes or, in the absence of local
codes, CAN/CSA B149.1, Natural Gas and Propane
Gas Installation Code, in Canada, and/or the
National Fuel Gas Code, ANSI Z223.1/NFPA 54, 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.
Before installing the vent piping, make sure that the
vent system layout has been properly planned. Verify
that the location of the water heater respects all clear-
ances from combustible material, all venting require-
ments (
see Table 1
), and that the vent terminal will be
installed as specified by all local codes or, in the
absence of local codes, CAN/CSA B149.1, Natural
Gas and Propane Installation Code, in Canada, and/
or the National Fuel Gas Code, ANSI Z223.1/NFPA
54, in the United States (
see Figure 9
).
This water heater must be vented directly to the out-
doors, 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.
Only three (3) inch (7.6 cm) or four (4) inch (10.2 cm)
schedule 40 PVC or CPVC, pipe and fittings may be
used to vent this water heater. For installations using
four (4) inch (10.2 cm) vent piping, a four (4) inch
(10.2 cm) to three (3) inch (7.6 cm) adaptor must be
installed as close as possible to the power venter. A
45˚ elbow must also be installed at the end of the
vent piping to serve as the vent termination. The grill
supplied by the manufacturer must be installed in this
INSTALLATION INSTRUCTIONS
2" min.
18'' min.
3'' min.
18'' min.
1/4"/foot
(21mm/m)
1/4"/pied
(21mm/m)
2" min.
18'' min.
3'' min.
18'' min.
Figure 8
6
MAXIMUM EQUIVALENT LENGTH OF PIPE
DO NOT EXCEED MAXIMUM
PIPE VENT DIAMETER
3 inch
4 inch
Maximum length plus one 45
o
or 90
o
termination elbow
50.0 feet (15.2 m)
100.0 feet (30.5 m)
Minimum length plus one 90
o
elbow and plus one 45
o
termination elbow
2.5 feet (0.8 m)
2.5 feet (0.8 m)
One 45
o
radius elbow is equivalent, in straight pipe, to
4.0 feet (1.2 m)
4.0 feet (1.2 m)
One 90
o
radius elbow is equivalent, in straight pipe, to
7.0 feet (2.1 m)
8.0 feet (2.4 m)
Table 1
WARNING
AVERTISSEMENT
DANGER
