lp-441 Rev. 004 Rel. 000 Date 7.2.21
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2. Check for nearby connections to:
• System water piping
• Venting connections
• Gas supply piping
• Electrical power
• Condensate drain
3. Check area around heater. Remove any combustible materials,
gasoline, and other flammable liquids.
4. Gas control system components must be protected from dripping
water during operation and service.
5. If the heater is to replace an existing heater, check for and correct
any existing system problems, such as:
• System leaks
• Location that could cause the system and heater to freeze and
leak
• Incorrectly sized expansion tank
6. Clean and flush system when reinstalling a heater.
NOTE:
When installing in a zero clearance location, it may not be
possible to read or view some product labeling. It is recommended to
make note of the heater model and serial number.
NOTE:
A combustible door or removable panel is acceptable front
clearance.
The service life of the water heater’s exposed metallic surfaces,
such as the casing, as well as internal surfaces, such as the heat
exchanger, are directly influenced by proximity to damp and salty
marine environments. In such areas higher concentration levels of
chlorides from sea spray coupled with relative humidity can lead to
degradation of water heater components. In these environments,
heaters must not be installed using direct vent systems which
draw outdoor air for combustion. Such heaters must be installed
using room air for combustion. Indoor air will have a much lower
relative humidity, and hence potential corrosion will be minimized.
Failure of the water heater or components due to incorrect operating
conditions IS NOT covered by product warranty.
B. Leveling
In order for the condensate to properly flow out of the collection
system, the area where you locate the heater must be level. Location
must also fully support the weight of the filled water heater.
All appliances eventually leak. Locate the appliance where any
leakage from the relief valve, related piping, tank, or connections
will not result in damage to surrounding areas or lower floors of the
building. Any appliance should be installed in such a manner that if it
should leak the resulting flow of water will not cause damage to the
area in which it is installed. National Plumbing codes require a drain
pan for any appliance installation. This drain pan should be sized with
a maximum depth of 2”, and a minimum diameter 2” greater than the
diameter of the appliance. The drain pan should empty into an open
drain line. This drain line should be 3/4” ID minimum, piped to an
open drain. Leakage damages ARE NOT covered by warranty. Failure
to install a drain pan is the sole responsibility of the owner and/or
installer. Reference UPC 2000 (Uniform Plumbing Code) Section 510
- Protection from Damage or IPC 200 (International Plumbing code)
Section 504 - Safety Devices. Leakage damages ARE NOT covered by
warranty.
In addition, water leak detection devices and automatic water shutoff
valves are readily available at plumbing supply houses. IT IS HIGHLY
RECOMMENDED BY THE MANUFACTURER TO INSTALL WATER LEAK
DETECTION DEVICES AND AUTOMATIC SHUTOFF VALVES IN ANY
APPLIANCE INSTALLATION WHERE A LEAKAGE OF WATER COULD
RESULT IN PROPERTY DAMAGES.
• NOTE: To prevent condensing in the fan, it is recommended
to avoid prolonged exposure to temperatures below 45
o
F
Failure to keep the water heater area clear and free of combustible
materials, liquids, and vapors can result in substantial property
damage, severe personal injury, or death.
Do not connect the water heater to any heating systems or
components that have been previously used for non-potable
applications.
Do not introduce toxic chemicals, such as antifreeze or water
heater treatments, into the water heater or any piping meant for
potable water purposes.
Ensure that all piping and components connected to the water
heater are suitable for potable water applications.
Do not use this water heater for space heating applications.
Circulators suitable for DHW applications must be used.
Failure to follow these instructions could result in serious personal
injury or death.
Always take future maintenance into consideration when locating
the water heater. If the water heater is located in an installation
location with limited clearances, it may be necessary to remove
the water heater from the space to perform maintenance. Failure
to consider maintenance when determining installation location
could result in property damage.
C. Clearances for Service Access
The space must be provided with combustion / ventilation air
openings correctly sized for all other appliances located in the same
space as the heater. The heater cover must be securely fastened to
prevent the heater from drawing air from the heater room. This is
particularly important if the heater is in a room with other appliances.
Failure to comply with the above warnings could result in substantial
property damage, severe personal injury, or death.
