Installing Unit in Duct Work
CAUTION: BE SURE TO WEAR APPROPRIATE PROTECTION AS CUTTING METAL IS LOUD AND
PIECES MAY BE SHARP AND HOT (I.E. HAND, EAR, EYE, AND FACE PROTECTION)
1.DisconnectpowertotheHVACsystembeforeinstallingtheunit.
2. Cut out the template from the back page and tape it to the duct work in
intended installation position.
3. For OS36: drill pilot holes 1- 5 with a 3/32” drill bit where indicated.
For OS72: drill pilot holes 1- 6 with a 3/32” drill bit where indicated.
4. For OS36: cut one (1) - 2 1/2” hole in
duct as where indicated.
For OS72: cut two (2) - 2 1/2” holes
where indicated. Remove any burrs
andbesureductsurfaceisatafter
cutting hole(s).
3