Installation Guide

Hydronic Air Handler Installaon and Operaon Manual 35
Gas Supply Line
Air Handler
Thermostat
Hot Water Supply Line
Building Outlets
Thermostac
Mixing Valve
Cold Water Supply Line
Condensate Drain Line as Appropriate
Recommended Rinnai
Domesc Priority Switch
Air handler models
with an internal
circulation pump
include an integrated
flow check.
1. Plumb the water out/supply of the Rinnai tankless water
heater or boiler to the inlet (top connection) of the air
handler.
2. Plumb the air handler water outlet (bottom connection) to
the water inlet/return of the Rinnai tankless water heater or
boiler.
• Refer to section “4.8 Plumbing Requirements” for complete plumbing requirements.
• For standard installations, refer to the piping diagrams in sections 5.7.1 and 5.7.2.
• For more information on the tankless water heater or boiler plumbing connections, refer to the
unit’s Installation and Operation Manual.
• Water connections to the air handler should follow all state and local plumbing codes.
This is not an engineering drawing; it is intended
only as a guide and not as a replacement for
professional engineering project drawings. This
drawing is not intended to describe a complete
system. It is up to the contractor or engineer to
determine the necessary components and
conguraon of the parcular system to be installed.
The drawing does not imply compliance with local
building code requirements. It is the responsibility of
the contractor or engineer to ensure the installaon
is in accordance with all local building codes. Confer
with local building ocials before installaon.
Water Inlet
Cold Water From Air
Handler Returning to
Water Heater/Boiler
Hot Water From
Water Heater/
Boiler into Air
Handler
Water Outlet
IMPORTANT
See next page for Legend