Clearances from appliance, Attachment of the water heater – Rinnai RC80HPI User Manual
Page 18

18
Manual - Rinnai Condensing Water Heaters
Clearances
from
Appliance
1. Identify the installation location and confirm that
the installation will meet all required clearances.
2. Securely attach the water heater to the wall using
any of the holes in the wall installation brackets 
which are at the top and bottom of the water 
heater. Ensure that the attachment strength is 
sufficient to support the weight. Refer to the 
weight of the water heater in the Specifications 
section. 
Attachment of the Water Heater
wall installation
brackets
to Com-
bustibles
to Non-
Combus-
tibles
Top of 
Heater 
12 inches 
(305 mm) 
2 inches 
(51 mm) 
Back of 
Heater 
0 (zero)
0 (zero)
Front of 
Heater 
6 inches 
(152 mm) 
6 inches 
(152 mm) 
Sides of 
Heater 
2 inches 
(51 mm) 
1/2 inch 
(13 mm) 
Floor/
Ground 
12 inches 
(305 mm) 
2 inches 
(51 mm) 
Vent
4 inches * 0 (zero)
* 4 inches (102 mm) for enclosed area; 1 inch (26 mm) for unenclosed area.
The clearance for servicing is 24 inches in front of the water heater.
For closet installation: clearance is 6 inches (152 mm) from the front.
** 0 inches from vent components and condensate drain line.
to Com-
bustibles
to Non-
Combus-
tibles
Top of 
Heater 
12 inches 
(305 mm) 
2 inches 
(51 mm) 
Back of 
Heater 
0 (zero)
0 (zero)
Front 
(Panel) 
24 inches 
(610 mm) 
0 inches
(0 mm)
Sides of 
Heater 
6 inches
(152 mm)
1/8 inch
(3.2 mm)
Floor/
Ground 
12 inches 
(305 mm) 
2 inches 
(51 mm) 
Front 
(Exhaust) 
24 inches 
(610 mm) 
24 inches 
(610 mm) 
RC80HPi, RC98HPi
RC80HPe, RC98HPe
to side
to front
to top
to floor/ground
