Laars LT Series, Installation And Operation Instruction Manual

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Page 15
NOTICE
The instructions for the installation of the venting
system shall specify that the horizontal portions of
the venting system shall be supported to prevent
sagging; the methods of and intervals for support
shall be specified. These instructions shall also
specify that the venting system:
Category IV water heaters must be installed so
that horizontal sections have a slope of at least ¼
inch per foot (21mm/m) to the appliance to prevent
accumulation of condensate; and
For Category IV water heaters, where necessary,
have means provided for drainage of condensate.
AVIS
Les instructions d'installation du système
d'évacuation doivent préciser que les sections
horizontales doivent être supportées pour prévenir
le fléchissement. Les méthodes et les intervalles
de support doivent être spécifiés. Les instructions
doivent aussi indiquer les renseignements
suivants:
les chaudières de catégories IV doivent présenter
des tronçons horizontaux dont la pente montante
est d'au moins ¼ po par pied (21 mm/m) entre la
chaudière et l'évent; les chaudières de catégories
IV doivent être installées de façon à empêcher
l'accumulation de condensat;
et si nécessaire, les chaudières de catégories
II et IV doivent être pourvues de dispositifs
d'évacuation du condensat.
The LT Series comes from the factory set to use
either Natural gas or Liquid Propane. Confirm the
installation gas type matches the gas type on the
rating plate.
Adequate drainage
• The appliance should be installed not to damage
the adjacent area. If such locations cannot be
avoided, it is recommended that a suitable drain
pan, adequately drained, be installed under the
appliance. The pan must not block combustion
air flow.
Connecting the Water Supply
• To conserve water and energy, insulate all water
piping—especially the hot and recirculation water
lines. Never cover the drain or pressure relief
valve.
Having a backflow preventer in the cold water
supply line means that it prevent from thermal
expansion backflow. Contact the water supplier
or local plumbing inspector for information about
how to control this situation. If overheating
occurs or the gas supply fails to shut off, turn off
the manual gas valve and check the installation.
This installation must conform with below section
• "Air for Combustion and Ventilation" of the
National Fuel Gas Code, ANSI Z224.1/NFPA 54,
or Sections 8.2, 8.3 or 8.4 of Natural Gas and
Propane Installation Code, CAN/CSA B149.1, or
applicable provisions of the local building codes.
CAUTION
4.4 Venting (Exhaust)
The flue temperature of the water heater changes
dramatically with changes in operating water
temperature. If the water heater is installed in an
application where the set point is greater than
140°F(60°C), ambient temperature is elevated,
and/or installed in a closet/alcove, CPVC,
polypropylene, or stainless steel material is
required. If the system temperatures are unknown
at the time of installation, stainless, polypropylene
or CPVC material is recommended.
The LT Series is a Category IV appliance and may
be installed with PVC, CPVC or polypropylene that
complies with ULC-S636, ANSI/ASTM D1785 F441
(see Table 3) or a PVC or stainless steel venting
system that complies with UL 1738.
INSTALLATIONS IN CANADA require the use
of venting material certified to ULCS636. All Gas
vents connected to the water heater, plastic,
stainless steel or otherwise must be certified to
this ULC standard. Appropriate selection of vent
material is very important for proper performance
and safe operation of the water heater.
The flue temperature of the water heater changes
dramatically with changes in operating water
temperature. Therefore, it is necessary to assess
the application of the water heater to determine
the required certified vent class. If the water
heater is installed in an application where the