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2. Installing the Boiler
2.1 Choosing an Installation Location
When choosing an installation location, you must ensure
that the location provides adequate clearance for the boiler,
adequate venting and drainage options, and sufficient access to
gas, water, and electrical supplies.
Carefully consider the following factors when choosing an
installation location:
Compliance Requirements
This boiler must be installed by qualified personnel in
compliance with the applicable Laws and Regulations.
In general, these Laws and Regulations are the Basic Gas
Installation Standards, the Heating, Air Conditioning and
Domestic Water Installation Regulation and all other local
regulations.
Access to Utilities
Water–the installation location should be near where the
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domestic water supply enters the building.
Gas–the installation location should be near where the gas
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supply enters the building.
Electricity–the installation location should be near where the
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electrical supply enters the building.
Humidity and Contact with Water
When installing the boiler, avoid places with excessive humidity.
The boiler has electric gas ignition components. Water spray or
droppings can get inside the boiler and damage the ignition
system. The boiler must be installed in a way to ensure that
the gas ignition system components are protected from water
(dripping, spraying, rain, etc.) during operation and service.
If the boiler is installed in a very humid room (a shower room
or bathroom, for example), the Low Voltage regulation and
the Technical Building Code must be observed for correct
installation.
Proximity to Fixtures and Appliances
Install the boiler near fixtures that deliver or use hot water,
such as bathroom, kitchen, and laundry room faucets. Select
a location that minimizes the water piping required between
major fixtures. If the distances are long or if the user requires
"instant" hot water, installation of a recirculation line which
circulates domestic hot water back to the boiler from the
furthest fixture is recommended. Insulate as much of the hot
water supply and recirculation lines as possible. For more
information about the water supply, refer to "3.2 Installing a
Domestic Hot Water (DHW) System" on page 24.
20
Installing the Boiler
Adequate Drainage
The boiler produces a significant amount of condensate during
operation. This condensate must be removed from the boiler,
and sutably treated if national legislation so requires. The boiler
should be located near a suitable drain and where damage from
a possible leak will be minimal. Installing the boiler in a location
without a drain will void the warranty and Navien will not be
responsible for water damages that occur as a result. For more
information about condensate drainage, refer to "3.3 Connecting
the Condensate Drain Line" on page 24.
The boiler must be located in an area where leakage of the unit
or connections will not result in damage to the area adjacent
to the appliance or to lower floors of the structure. When such
locations cannot be found, installation of an adequately drained
drain pan under the boiler is highly recommended. When
installing the drain pan, ensure that the installation does not
restrict combustion air flow.
Adequate Venting and Ventilation
The boiler must be installed in a sufficiently ventilated area with
openings directly to the outside of the building (as required by
the Gas Installations Regulation). The boiler must be located so
that the grilles of the premises are not obstructed and normal
boiler maintenance is possible even if installed between items
of furniture.
Select a location that requires minimal venting. Consider
venting restrictions caused by windows, doors, air intakes, gas
meters, foliage, and other buildings. For more information about
venting, refer to "5. Venting the Boiler" on page 30.
To ensure adequate venting and ventilation, follow these
guidelines:
Maintain proper clearances from any openings in the building.
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Install the boiler with a minimum clearance of 300 mm above
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an exterior grade or as required by local codes.
Do not enclose the vent termination.
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Install the exhaust vent in an area that is free from any
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obstructions, where the exhaust will not accumulate.
Do not install the boiler where moisture from the exhaust may
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discolor or damage walls.
Do not install the boiler in bathrooms, bedrooms, or any
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other occupied rooms that are normally kept closed or not
adequately ventilated.
The requirements and recommendations stipulated in the
Regulation for Heating Installations in Buildings (RITE) and any
other applicable legislation in this field must be observed.
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