Rinnai N Series Manual page 15

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Quick start manual (4 pages)

Table of Contents

Venting

Maximum Vent Length Quick Reference

Vent Diameter / Vent Type / # of Units

3" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 2 Units

4" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 2 Units

4" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 3 Units

4" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 4 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 2 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 3 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 4 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 5 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 6 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 7 Units

6" Vent (Dual Pipe - Direct Vent / Single Pipe - Room Air) 8 Units

NOTE:

When calculating vent lengths, the termination configuration may have a length equivalency that will need to be added to the length of straight pipe and the elbow

equivalencies (listed below). For two-pipe vent installations, use the calculated length of the intake or exhaust, whichever is longer. Do not add them together. See installation

manual for specifics.

NOTE:

This document is meant as a guide and not as a replacement for the information contained in the applicable water heater and/or common vent installation manuals. Refer to

the appropriate manual for complete details.

PROPRIETARY and CONFIDENTIAL

PVC / CPVC / PP DIRECT COMMON VENT / NON - DIRECT COMMON VENT (Room Air), COMMERCIAL

4" Header

Equivalent lengths – 3", 4", 6" PVC/CPVC/PP Common vent

90⁰ Elbow = 10 feet

Enhancing Lives By Changing The Way Water Is Heated

CU160i

CU199i

Maximum Equivalent Length in Feet

3" Header

6" Header