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LP-454 REV. 1.6.15
4. 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.
This water heater is designed to draw combustion air through the louver system in the front of the heater cabinet. Before a heater
installed outdoors is started, the end cap must be removed so that the heater draws combustion air through the louvers. 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:
Ensure the heater is located away from the building. 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.
Figure 16
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