CB
Built Like A Tank With Laser Precision
Page
18
of 24
Slide the heat exchanger through the front hole to the back hole so it protrudes out the front and
back of the plenum.
Ideally the core of the heat exchanger will be entirely within the plenum.
Crimp the sheet metal to the edge of the heat exchanger. This is item G in the diagram on page
16 using channel-lock pliers to crimp.
This not only forms a virtually airtight seal, but it also supports the heat exchanger as well.
K. Bleeding the Heat Exchanger
With the pump running (Prime first and turn the thermostat up so that the pump comes on),
simply close the brass valve on the return side, holding for 2-3 seconds, then open quickly.
Repeat the procedure four times or until you cannot hear air rushing through the line.
L. Air Flow through Plenum
The motors on most force air furnaces have three speeds to provide various rates of air
movement. Please consult a local furnace specialist if you want to change the airflow of your
existing furnace system.
M. Thermostat Wiring Layout
This setup is for controlling your furnace blower independently of your existing heat source.
