HC

M

R

Hot Supply

Water-to-WaterHeat Exchanger

Bypass Line

Hot Supply from Pumpon Outdoor Furnace

Return to Outdoor Furnace

Thermostatic Valve (optional)

Thermostatic Mixing Valve

This horizontal assemblymust not exceed a height

of 4 inches above topof water heater.

ExistingWaterHeater

1" Central

PEX®

Optional 3-WayBypass Valve

HeatExchanger

Plenum

ExistingForced AirFurnace

NOTEInstaller must comply withall applicable codes andregulations.

NOTEOutdoor furnace watertemperature setpoint shouldbe set at 185˚F minimum.

For illustration purposes only, water heater styles may vary.

NOTEA pump must be installed in the hot supply line between the outdoor furnaceand thermostatic valve.

Forced Air System