Rinnai AH083CP Installation And Operation Manual page 24

IMPORTANT
Read section "4. Installation Preparation"
before starting installation steps.
Refer to the previous section (section "4.
Installation Preparation") for more information
on location and configuration requirements.
1. Place the air handler in the desired location
and configuration. Approved configurations:
• Vertical: Upflow with bottom or side
(left or right side) return
• Horizontal: Upflow with bottom return
Vertical (upflow with bottom or side return)
SUPPLY (Upflow)
Air flows out through top
RETURN
Air flows in through bottom or
side (left or right side)
Horizontal (Upflow with bottom return)
SUPPLY
Air flows
out
through
"top"
24
Refer to section "4.5 Ductwork Requirements"
for complete ductwork installation
requirements.
1. Connect the supply air duct to the flange on
top of the blower section of the air handler.
RETURN
RETURN
•
Air flows in
through
"bottom
duct return"
•
Hydronic Air Handler Installation and Operation Manual
Example Vertical Installation
SUPPLY
Example Horizontal Installation
SUPPLY
IMPORTANT
A return air duct system is recommended.
If the unit is installed in a confined space
or closet, a return connection must be
run, full size, to a location outside the
closet.
The isolation connector (if used) must be
nonflammable.
RETURN