Installation Manual

whl-007 Rev. 1.14.15
4
A. Locating the Water Heater
High heat sources (generating heat 100
o
F / 37
o
C or greater, such
as boiler ue pipes, space heaters, etc.) may damage plastic
components of the water heater as well as plastic vent pipe
materials. Such damages ARE NOT covered by warranty. It is
recommended to keep a minimum clearance of 8” from high
heat sources. Observe heat source manufacturer instructions,
as well as local, state, provincial, and national codes, laws,
regulations, and ordinances when installing this water heater
and related components near high heat sources.
This water heater is certied for indoor use only. DO NOT
INSTALL OUTDOORS. Outdoor installations ARE NOT covered
by warranty.
Choose a location for the water heater as centralized to the
piping system as possible. Also, locate the water heater and
domestic water piping where it will not be exposed to freezing
temperatures. All piping should be insulated. Additionally,
place the water heater so that the drain, controls, and inlets/
outlets are easily accessible.
Locate the water heater where any leakage from the relief valve,
related piping, tank, or connections will not result in damage
to surrounding areas or lower oors of the building. The water
heater should be located near a oor drain or installed in a drain
pan. Leakage damages ARE NOT covered by warranty.
NOTE: To save on heating costs and improve energy eciency
keep the distance between the boiler and water heater to a
minimum to reduce heat loss from excess piping and keep
friction loss at a minimum. Ensure all piping between the boiler
and water heater is properly insulated to minimize heat loss.
The water heater may be located some distance from the boiler
provided the circulator meets ow requirements through the
coil. The greater the distance from the water heater to the boiler
the longer the response will be to a call for hot water.
This water heater must be installed vertical on a level surface.
NOTE: In the State of California, the water heater must be
braced, anchored, or strapped to avoid moving during an
earthquake. Contact local utilities for code requirements in your
area. Visit http://www.dsa.dgs.ca.gov or call 1-916-445-8100
and request instructions.
However, applicable local codes shall govern installation.
For residential water heaters of a capacity of greater than 52
gallons, consult the local building jurisdiction for acceptable
bracing procedures.
NOTE: If you do not provide the minimum clearances shown
in Figure 1, it might not be possible to service the water heater
without removing it from the space.
Ensure the location can support the entire lled weight of the
water heater. Failure to properly support the water heater could
result in property damage, severe personal injury, or death.
This water heater must not be located near ammable liquids
such as gasoline, butane, liqueed propane, adhesives,
solvents, paint thinners, etc., as the controls of this water
heater could ignite these vapors and cause an explosion
resulting in property damage, severe personal injury, or death.
Figure 1 - Recommended Service Clearances
RECOMMENDED SERVICE CLEARANCES
CATCH PAN DIMENSIONS
B. Water Chemistry Requirements
Chemical imbalance of the water supply may aect eciency
and cause severe damage to the water heater and associated
equipment. Westinghouse recommends having water quality
professionally analyzed to determine whether it is necessary to
install a water softener. It is important that the water chemistry
on both the domestic hot water and central heating sides are
checked before installing the water heater, as water quality
will aect the reliability of the system. In addition, operating
temperatures above 135
o
F will further accelerate the build-
up of lime scale and may shorten the service life of the water
heater. Failure of a water heater due to lime scale build-up,
low pH, or other chemical imbalance IS NOT covered by the
warranty.
The following are water quality parameters that need to be
met in order for the system to operate eciently for many
years.
Water Hardness
Water hardness is mainly due to the presence of calcium and
magnesium salts dissolved in water. The concentration of these
salts is expressed in mg/L, ppm, or grains per gallon as a measure