Installation Guide
Polypropylene (PP) Common Venting Installation Instructions 8
Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
Topics in this Secon:
• 4” Direct Vent and Room Air
• 4” Inline Add-On and Starter Kits
• 4” Back-to-Back Add-On and Starter Kits
4” Direct Vent and Room Air
4” Common Venng
Direct Vent
• Maximum 4 Units
Room Air
• Maximum 4 Units
• Refer to the Combuson Air secon of this manual for room air
requirements
Inline Back-to-Back
Inline
Cutting Line table applicable up to 4 units.
Back-to-Back
Inline
# of Appl
L =
Back-to-Back
# of Appl
L =
1 5.5” 1+1a 5.5”
2 6.5” 2+2a 6.5”
3 7.5” 3+3a 7.5”
4 8.5” 4+4a 8.5”