Installation and Operating Instructions
NCB
Built Like A Tank With Laser Precision
Page
17
of 29
WARNING! Metal edges are very sharp! Wear protective gloves and use caution!
Slide the heat exchanger into the hole for a test fit. Ideally the tubes (D and E) should stick
out of the plenum [see diagram on previous page]. The header and tubes (F) can stick out
of the plenum as well, if necessary.
As long as the whole coil surface (B) is in the plenum, you should be good even if a little
more of the header (F and even G) sticks out.
While test fitting it, try to determine how much tape is needed around it. A different amount
(thickness) may be needed on different sides. You can purchase different thicknesses of
tape so that it will fit and seal properly.
Place foam tape around the outside of the heat exchanger to seal it off so that it fits tight
and air can’t blow by it.
The heat exchanger needs to be installed so it won’t move around. The easiest way is to
fabricate some pieces of metal into an ‘L’ shape, approx. the length of the heat exchanger
like shown above.
Install the braces as shown above. Simply put them in place, the proper width apart
(Dimension C). Drill through the duct work and your newly made ‘L’ pieces and pop rivet or
screw them into place. You will need four pieces, two each on the top and bottom.
Slide the heat exchanger carefully into the plenum to check the fit again. If all looks good,
you can seal off the ends of the heat exchanger and the hole you made in the plenum with
foil tape made for ductwork.
