Rinnai 650 Operation & Installation Manual page 28

HEATER ENGINE - GENERAL INSTALLATION
Flue Installation Dimensions and Restrictions (all dimensions in mm)
Vertical
Vertical
Rinnai
Horizontal
Masonry Fireplace (Non-combustible ONLY)
False Fireplace
Max 2000
Off-Set
WARNING
255 Min 245
Max 410
Direct Horizontal
28
This method NOT suitable for
combustible material constructions.
Max 2000
255
Extended Horizontal
RDV 600_700 OIM