4
Pre-Installation
In hard water areas (more than 7 grains of
hardness) soften the cold domestic supply
water to the appliance to prevent scaling.
Any water conditioning system must be
installed and maintained in accordance with
manufacturer’s specifications.
Do not install the Excellence water heater on
any application if the boiler piping contains
non-oxygen barrier tubing or if the boiler
piping is considered an “open system”.
Exposing the outer tank of the Excellence
water heater to oxygen contamination will
lead to premature tank failure and denial of
the warranty.
Locating Water Heater
• The Excellence is not intended for outdoor
installations.
• Locate Excellence so that any leakage from the
tank or water connections will not cause dam-
age to the area adjoining the water heater or to
lower floors in the structure.
Recommended Clearances
The Excellence is approved for zero clearance to
combustibles, excluding vent and boiler piping.
- Vent & Boiler Piping - 1/4 inch from com-
bustible materials.
To provide serviceability to the unit it is rec-
ommended that the following clearances be
maintained:
Top boiler jacket - 24 inches.
Front - 24 inches.
Bottom boiler piping - 24 inches.
Rear - 0 inches
Sides - 6 inches
When maintaining zero clearance or less
than recommended clearances, some prod-
uct labeling may become hidden and
unreadable
When installing the Excellence in a confined
space, sufficient air must be provided for
proper combustion and venting and to
allow, under normal operating conditions,
proper air flow around the product to main-
tain ambient temperatures within safe limits
to comply with the National Fuel Gas Code
NFPA 54 - latest edition. Reference the
Excellence Boiler Manual for additional
guidelines.
Residential Garage Installations
When installing the Excellence in a residential
garage, the following special precautions per NFPA
54/ANSI Z223.1 must be taken:
- Mount the unit with a minimum 18 inches
above the floor level of the garage. Ensure
the burner and ignition devices / controls
are no less than 18 inches above the floor
level.
- Locate or protect the unit in a matter so it
cannot be damaged by a moving vehicle.
WARNING
NOTICE
BEST PRACTICE
NOTICE
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