TB-176 New Hydronic Air Handler Configuration

Air Flows In
(Return)
Bottom
Top
• Hydronic Air Handler (AH Series)
•
The Rinnai Hydronic Air Handler (AH Series) has been approved for vertical: downflow with bottom or
side (left or right side) return configuration.
In a downflow configuration, the air handler is installed upside down (Figure 1). Air flows in through the
bottom or sides of the air handler and flows out the top of the unit (Figure 2).
With Internal Circulation Pump:
AH083CP, AH084CP, AH125CP, AH166CP, AH206CP
Without Internal Circulation Pump: AH083P, AH084P, AH125P, AH166P, AH206P
Air Flows In
Air Flows In
Air Flows Out (Supply)
Figure 1
Figure 2
Top
Bottom
Bottom
Top
Upside
Down
Reference to “top” and “bottom”
are referring to the location in this
image and will not change based
on orientation of the product.
NOTE
• Refer to the “Hydronic Air Handler Installation and Operation Manual” for a complete list of
approved system configurations.
• The Vertical: Downflow configuration will be added to the next release of the “Hydronic Air Handler
Installation and Operation Manual.”