Installation Manual
Hydronic Air Handler Installaon and Operaon Manual   7 
120V Power Supply 
Knockout Access Port 
1
24V Thermostat Cable 
Knockout Access Port 
(available on left or right 
side) 
Left or Right Side HVAC 
Duct Return 
Corrosion Resistant Cabinet 
(made of heavy gauge 
galvanized steel) 
3-Speed PSC Blower 
Motor and Housing 
Control Panel  
Water Inlet  
Hot Water From Water Heater/
Boiler into Air Handler 
Hydronic  
Coil 
Circulation Pump (for models 
with integrated pump). 
Circulates hot water between 
the air handler and tankless 
water heater/boiler.  
Water Outlet  
Cold Water Returning to  
Water Heater/Boiler 
Bottom HVAC  
Duct Return 
•  Reference to the "top" and "bottom" 
are referring to the location in this 
image and will not change based on 
orientation of the product. 
•  Cover is removed in above image to 
show the air handler internal 
components.  
           NOTE 
TOP 
BOTTOM 
1
 120V Power Supply Knockout Access Port:  
•  Located on right side panel for air handler 
models AH083P/CP, AH084P/CP, AH125P/
CP, and AH166P/CP. 
•  Located on left side panel for air handler 
models AH206P/CP.  
A-Coil and Ductwork  
(Field-Supplied) 
Control Panel 
Air Handler 
Water Outlet to  
Water Heater/Boiler 
Water Inlet From  
Water Heater/Boiler 
Refrigerant Lines (Field-
Supplied) to Condensing Unit  










