Installation; General - Takagi 110 Outdoor Installation Manual And Owner's Manual

INSTALLATION

1. Follow all local codes, or in the absence of local codes, follow the current edition of the National
Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or B149.1 Natural Gas, Propane Installation Code
in Canada.
2. All gas water heaters require careful and correct installation to ensure safe and efficient operation.
This manual must be followed exactly. Read the "Safety Guidelines" section.
3. The manifold gas pressure is preset at the factory. It is computer controlled and should not need
adjustment.
4. Maintain proper space for servicing. Install the unit so that it can be connected or removed easily.
Refer to the "Clearances" section on p. 9 for proper clearances.
5. The water heater must be installed in a location where the proper amount of combustible air will
be available to it at all times without obstructions.
6. Electrical service to the water heater requires a means of disconnection. This will allow power to
the water heater to be shut off for servicing and safety purposes.
7. Do not install the unit where the exhaust vent is pointing into any opening in a building or where
the noise may disturb your neighbors. Make sure the vent termination meets the required distance
from any doorway or opening to prevent exhaust from entering a building. (Refer to pp. 21 and 22.)
Check local code requirements to prior to installation.
8. Carefully plan the installation location of the heater and vent terminations. Contaminants such as
aerosols, lint, and fine powders (including flour) can clog the air intake and reduce the operation
of the fan. This, in turn, can cause improper combustion and reduce the life of the water heater.
Regularly ensure that the area around the water heater, vent termination, and air intake is free of
dust, debris, and other contaminants. In environments with a high level of contaminants (laundry
facilities, hair salons, pet salons, chemical plants, commercial kitchens, etc.), direct venting is
required.
9. If you will be installing the water heater in a contaminated area with a high level of dust, sand, flour,
aerosols or other contaminants/chemicals, they can become airborne and enter and build up within
the fan and burner causing damage to the water heater.
10. 110 Indoor, 310 Indoor, and 510 Indoor models:
• These units may be converted to a direct-vent (sealed combustion) appliance by installing a
direct-vent conversion kit 100112184 (TK-TV10), which will bring in all required combustible
air from outside the building. When installing the direct-vent conversion kit, please follow all
instructions included with the kit.
• If the water heater is used as a direct-vent appliance, the unit requires a 3 in. (76 mm)
combustible air supply pipe. The intake pipe must be sealed airtight. Air supply pipe can be
made of ABS, PVC (solid core), CPVC (solid core), Polypropylene, corrugated stainless steel, or
Category lll / IV stainless steel.
• Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel® (polyphenylsulfone) in
non-metallic venting systems is prohibited. Covering non-metallic vent pipe and fittings with
thermal insulation is prohibited.
• Terminating the venting through a sidewall is recommended for the direct-vent system.
• Running the exhaust vent and the intake pipe parallel is recommended.
• Terminating the exhaust and intake on the same wall/surface is recommended. Terminating
in the same pressure zone allows for pressure balancing, which prevents nuisance shutdowns.
11. 110 Outdoor, 310 Outdoor, and 510 Outdoor models are only to be installed outdoors and only in
areas with mild, temperate climates.

GENERAL

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Installation Manual
Installation