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Example Vertical (Upflow with
Side Return) Configuration
Thermostat
A call for heat from the
thermostat activates the
air handler
Water Inlet
Water Outlet
RETURN
(Air Flows In)
The ductwork in the above image is for representation purposes only; it is not a
complete system. Please follow standard duct design protocols for installation.
8
(Air Flows Out)
Supply
Ductwork
Front
Panel
Return
Ductwork
IMPORTANT
SUPPLY
Air Handler
Hydronic Air Handler Installation and Operation Manual
Rinnai Tankless
Water Heater
or Boiler
Hot Water From
Water Heater/Boiler
into Air Handler
Cold Water From
Air Handler Returning
to Water Heater/Boiler
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