Rinnai CAH Series, Instalation And Operating Manual

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Canadian Air Handler Installation and Operation Manual 21
Read section “4. Installation Preparation ”
before starting installation steps.
IMPORTANT
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, side (left or
right side), or back return
•
Vertical: Downflow with bottom, side (left
or right side), or back return
•
Horizontal: Upflow with bottom, side (left or
right side), or back return
1. Connect the supply air duct to the flange on
top of the blower section of the air handler.
Refer to section “4.5 Ductwork Requirements ”
for complete ductwork installation requirements.
•
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.
IMPORTANT
RETURN
SUPPLY
Example Vertical Installation
SUPPLY (Upflow)
RETURN
Air flows in through bottom,
back, or side (left or right side)
Vertical (Upflow with bottom, back, or side
return)
Air flows out through top
Horizontal (Upflow with bottom, back, or
side return)
RETURN
Air flows in
through
bottom, back,
or side return
SUPPLY
Air flows out
through “ top ”
SUPPLY (Upflow)
RETURN
Air flows in through
bottom, back, or side
(left or right side)
Vertical (downflow with bottom, back, or
side return)
Air flows out through top