lp-505 Rev. 000 Rel. 015 Date 1.7.20
10
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.
See Table 6 for recommended service clearances. If these minimum
clearances are not provided, it may not be possible to service the water
heater without removing it from the space.
Minimum Clearances
Installation Clearances from Non-
Combustibles / Combustibles
Recommended Service
and Proper Operation
Clearances
Top 9” (228.6 mm)
Back 0” (0 mm)
Bottom 12” (304.8 mm)
Front 6” (152.4 mm) 24” (60.9 cm) or more
Right Side
3” (76.2 mm)
Left Side
Table 6 - Minimum Installation and Service Clearances
NOTE: For closet installations, a combustible door or removable
panel is acceptable front clearance. A 3” minimum clearance must be
provided from the appliance front cover to the removable panel or
combustible door.
NOTE: If you do not provide the minimum clearances shown in Table
6 it might not be possible to service the heater without removing it
from the space.
MINIMUM CLEARANCES FROM COMBUSTIBLE MATERIALS
• Hot water pipes - at least 1” from combustible materials
• Exhaust vent pipe - at least 1” from combustible materials
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.
D. Residential Garage and Closet Installations
Precautions
If the heater is located in a residential garage, per ANSI Z223.1:
• Mount the bottom of the water heater a minimum of 18”
above the oor of the garage to ensure the burner and
ignition devices are well o the oor.
• Locate or protect the water heater so it cannot be damaged
by a moving vehicle.
Check with your local Authority Having Jurisdiction for
requirements when installing the water heater in a garage
or closet. Please read the entire manual before attempting
installation. Failure to properly take factors such as venting,
piping, condensate removal, and wiring into account before
installation could result in wasted time, money, and possible
property damage and personal injury.
The space must be provided with correctly sized combustion/
ventilation air openings for all other appliances located in the
space with the water heater. For power venting installations using
room air for combustion, refer to the venting section, this manual,
for descriptions of conned and unconned spaces. Do not install
the water heater in an attic. Failure to comply with these warnings
could result in substantial property damage, severe personal
injury, or death.
E. Exhaust Vent and Intake Pipe
The heater is rated Category IV (pressurized vent, likely to form
condensate in the vent) and requires a special vent system designed
for pressurized venting.
NOTE: The venting options described here (and further detailed
in the Venting section, this manual) are the lone venting options
approved for this water heater. Failure to vent the water heater
in accordance with the provided venting instructions will void
the warranty.
The exhaust discharged by this water heater may be very hot.
Avoid touching or other direct contact with the exhaust gases of
the vent termination assembly. Doing so could result in severe
personal injury or death.
Do not attempt to vent this water heater by any means other than
those described in this manual. Doing so will void the warranty
and may result in severe personal injury or death.
Vents must be properly supported. Heater exhaust and intake
connections are not designed to carry heavy weight. Vent support
brackets must be within 1’ of the heater and the balance at 4’
intervals. Heater must be readily accessible for visual inspection
for rst 3’ from the water heater. Failure to properly support vents
could result in property damage, severe personal injury, or death.
Failure to vent the water heater properly will result in serious
personal injury or death.
All water heaters eventually leak. 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. Any water heater should be installed in such a manner that
if it should leak the resulting ow of water will not cause damage to
the area in which it is installed. National Plumbing codes require a
drain pan for any water heater installation. Such a drain pan must
have a clearance of at least 1.0” (2.5 cm) greater than any point on
the water heater’s outer jacket and must be piped to an adequate
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
shuto 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 WATER HEATER INSTALLATION WHERE A LEAKAGE OF WATER
COULD RESULT IN PROPERTY DAMAGES.
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