
lp-673 Rev. 000 Rel. 001 Date 8.30.18
26
Outdoor Installation
When drawing combustion air from the outdoors, care must be taken to provide adequate freeze protection. Failure to do so could result in
property damage and premature product failure. Such damages and failures ARE NOT covered by product warranty.
CAUTION
This water heater is designed to draw combustion air through the louver system in the water heater cabinet. This combustion air also serves
to cool the internal electronics when the heater is installed in very warm climates.
To prevent combustion air contamination or exhaust recirculation:
• Flue gas can cause damage to exterior walls and other devices.
• Locate the heater at least 48” below or horizontally from any window, door, walkway, or gravity air intake.
• Locate the heater 10’ away from any public area, outdoor sitting area, or forced air inlet.
• Locate the heater away from areas that may change over time. Do not allow the growth of trees, shrubs, or plants to obstruct proper
operation of the exhaust vent system.
• If the heater is located in a fenced area, ensure the unit exhaust extends level with or above the top of the fence to ensure flue gas does
not get trapped and possibly recirculated into the louver system, which could contaminate the combustion air.
INLET
NOTE: DIMENSIONS GIVEN ARE IN FEET.
WINDOW
FORCED AIR
ENTRY DOOR
EXISTING BUILDING
10' MIN.
4' MIN.
4' MIN.
4' MIN.
RECOMMENDED CLEARANCE FOR OUTDOOR INSTALLATION
LP-672-E
4/5/18
Figure 17 - Recommended Outdoor Installation Clearances
LP-672-F
04/5/18
NOTE: IN EXTREMELY HOT CLIMATES IT IS RECOMMENDED TO PLACE THE UNIT ON THE NORTH SIDE
OF THE BUILDING TO EXTEND THE LIFE OF THE CONTROLS.
RECOMMENDED OUTDOOR ENCLOSURE
FENCING SHOULD
NOT EXCEED HEIGHT
OF THE UNIT
TOP VIEW
4' MIN.
4' MIN.
4' MIN.
Figure 18 - Recommended Outdoor Enclosure
Heaters must not be installed under an overhang
unless clearances are in accordance with local
codes, the requirements of the gas supplier / utility,
and the AHJ. At a mininum, do not install this
water heater under an overhang less than 3 ft
(915 mm) from its top or eaves. The area under an
overhang must be open to three sides. Roof water
drainage must be diverted away from heaters
installed under overhangs. Failure of heater or
components due to incorrect operating conditions
IS NOT covered by product warranty.
3 ft
(915 mm)
lp-672-C
Rev. 5.18.18