Navien NR-180 Installation Manual page 33
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Also See for NR-180:
- Quick installation manual (4 pages) ,
- Service manual (179 pages) ,
- Operation & installation manual (89 pages)
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Navien Gas Water Heater Installation
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Venting:
CONCENTRIC VENT TERMINATION
1. Sidewall Installation
COMBUSTION AIR
VENT
2. Roof Installtion
COMBUSTION AIR
"A"
"B"
"C"
"D"
DIMENSION
38-7/8"
3"
4-1/2" 21-1/8"
COMBUSTION AIR
VENT
MAINTAIN 12" MIN. CLEARANCE
ABOVE HIGHEST ANTICIPATED
1" MINIMUM
NOW LEVEL OR GRADE, WHICHEVER
IS GREATER.
VENT
MAINTAIN 12" MIN.
(18" MIN. FOR CANADA)
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24" ABOVE ROOF.
COMBUSTION AIR
VENT
33
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