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Une remise extérieure (au Canada seulement)
est un endroit inoccupé qui ne communique pas
directement avec les endroits occupés. Toutes les
installations intérieures et remises extérieures exigent
l’addition d’une cheminée approuvée par le
manufacturier. La cheminée doit être installée sans
aucune modification et selon les exigences fournies
par le manufacturier.
These codes, standards and Waterpik Technolo-
gies require that the heater be properly vented as
outlined in this manual. Proper ventilation of exhaust
and combustion air are essential for the safe and
efficient operation of the heater (See Section 3).
2.3.5.1 Converting the Grill to a Vent
Collar
If the LX or LT Low NOx is to be installed
either indoors or in an outdoor shelter, its exhaust
discharge grill must be converted to a collar for vent
pipe connection. The necessary vent collar, gasket and
screws can be ordered as parts kit R0331403 for
model 250 or R0331405 for model 400 (see parts list in
Section 11 of this manual). The conversion can be
done quite simply as follows:
1.
Remove the vent exhaust grill by removing the
four screws which retain it. The grill and the
screws may be discarded (See Figure 5).
2.
Replace the grill with the vent collar. Place the
vent collar and gasket over the hole and fasten it
in place with the 4 screws provided. Be sure that
all components are properly aligned
(See Figure 6).
3.
Install the vent pipe on the indoor vent collar. The
collar will accommodate vent piping of nominal 7"
or 9" diameter (see Table 4), depending upon the
model of your heater (See Figure 7). See vent
installation section for important information on
selecting proper pipe size.
SECTION 3.
Venting
3.1 Combustion Air Supply
The heater location must provide sufficient air
supply for proper combustion and ventilation of the
surrounding area as outlined in the latest edition of
ANSI standard Z223.1 or in Canada, CAN/CSA-
B149.1, and any local codes that may be applicable.
In general, these requirements specify that the
room in which a heater is installed should be provided
with two permanent air supply openings; one within 12
inches (305mm) of the ceiling, the other within 12
inches (305mm) of the floor. All indoor installations
must have openings to outside air for combustion,
ventilation, and dilution of flue gases from inside the
building (see Figure 7 and Table 3). Waterpik Tech-
nologies does not recommend indoor installations that
do not provide combustion air from outside the build-
ing.
All outdoor shelter installations (Canada only)
must have uninterrupted openings to outside air for
combustion and ventilation. The installation must be in
accordance with the latest edition of CAN/CSA B149.
Waterpik Technologies does not recommend outdoor
shelter installations that depend on internal air for
combustion. Combustion air should be ducted to the
heater from outside the structure.
Figure 7. Vent Pipe Installation
Figure 5. Removal of Outdoor Exhaust Grill
OUTDOOR
VENT GRILL
Figure 6. Vent Collar Assembly for Indoor and Outdoor
Shelter Installation
INDOOR
VENT
COLLAR
GASKET
