Section 9, The Space Heating Module (optional)
•
The Hot Water Return connection from the Space Heating
Module to the WaterHeater™ is on the front upper right face of
the module and is a 1/2” NPT female fitting. This connects to
the 1/2” NPT female fitting on the cold water inlet tee
previously installed on the WaterHeater™. Two male 1/2” NPT
x 3/4” hose barbs (not supplied), 3/4” I.D. heavy duty rubber
hose, and good quality hose clamps are recommended for
connecting the two fittings together.
•
The space heating supply connection from the Space Heating
Module to the cabin fan heater is labeled “Space Heat Out” and
is a female 1/2” NPT fitting located on the upper left face of the
module. A male 1/2” NPT x 3/4” hose barb (not supplied), 3/4”
I.D. heavy duty rubber hose, and good quality hose clamps are
recommended for connecting the module to the cabin fan
heater.
•
The space heating return connection from the cabin fan heater
to the Space Heating Module is a female 1/2” NPT fitting
connected initially to the bottom fitting on the attached
expansion tank. Heavy duty, 3/4” I.D. rubber hose and good
quality hose clamps are recommended for connecting the
output of the cabin fan heater back to the top fitting of the
expansion tank.
•
A good quality overflow tank is recommended to be connected
to the expansion tank on the Space Heating Module.
Figure 9-2: Space Heating Module and Hot Water Heater Hookup
International Thermal Research
9-5
