PLUMBING - INSTALLATION
CLOSED SYSTEM – BASIC CONFIGURATION With Connection to an Existing Boiler System
This configuration shows the furnace connected to an existing boiler system with radiant heat. The sys-
tems are separated by a plate heat exchanger to prevent mixing of the heating fluids. Both systems
have combination heat exchanger/fan units and isolating solenoid valves which provide Thermal Protec-
tion Zones for over heat situations, where the fluids exceed 200˚F.The Furnace side is operated by the
temperature controller and the boiler side is operated by an aquastat. Both systems have auto fill and
backflow preventer devices for maintaining the fluid levels in the lines. To protect the furnace from possi-
ble condensation and creosote buildup, a mixing valve is used on the return side to keep the incoming
fluid above 150˚ F.
NOTE: Any installation requiring the connection of the WinterGreen Furnace to an existing boiler
system must comply with local building codes. Contact your local plumbing professional for ex-
pert advice prior to your installation.
All plumbing configuration drawings depicted in the “Plumbing Installation” section of this manual are for illustration purposes.
Due to the various safety and control devices that may be required for individual applications, it is recommended that you consult
your WinterGreen representative for the design configuration that meets your needs.
