Rinnai Tankless Water Heater Installation and Operation Manual
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4.5.9 Termination Clearances for External (Outdoor) Water
Heaters
36 in. (0.91 m) to ventilated or unventilated
soffit or eve vent; or to a deck or porch
60 in. (1.52 m) vertically between terminals
2 in.
12 in.
(0.30 m)
Corner
Figure 27
12 in. (0.30 m) from
ground anticipated
snow line
4.5.10 Adjustment for High Altitude Installations
Use parameter settings to select the appropriate altitude for your installation. The default setting for the
appliance is 0-2,000 ft. (0-610 m), Parameter Setting 2A. Refer to section "4.10.1 Configure Parameter
Settings" for specific details on setting parameters..
Altitude
Parameter Setting
0-2,000 ft (0-610 m)
02A
2,001-5,400 ft (610-1,646 m)
02b
5,401-7,700 ft (1,646-2,347 m)
02C
7,701-10,200 ft (2,347-3,109 m)
02d
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DO NOT use room air for combustion.
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Installation complies with National Fuel Gas Code, ANSI Z223.1/NFPA 54 as well as local and
state regulations therein.
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For indoor models verify that the parameters have been adjusted for vent length if necessary.
Refer to the section on Maximum Vent Length.
□
Confirm high altitude settings are correct for installation location requirements. See Parameter
Settings Table for more information.
Checklist for Venting Requirements
