Attic Platform Back-To-Back Installations - Non-Condensing And Condensing Furnaces; Horizontal Suspended Installation - Condensing Models; Horizontal Suspended Installation - Non-Condensing Models - Carrier AGATWNPME01B Installation Instructions Manual

AGATWNPME01B: Installation Instructions
Attic Platform Back-to-Back Installations -
Non-Condensing and Condensing Furnaces
1. Construct a platform from 3/4 in. (19 mm) (nominal plywood),
extending out 30 inches (762 mm) from the front of each furnace,
see Fig. 11 and Fig. 12.
2. Maintain all clearances to combustibles per the furnace Installation,
Start-up and Operating Instructions.
3. Follow all additional building codes.
4. Long truss spans may require additional support along the bottom
chord of the truss. Consult the truss manufacturer's guidelines for
engineering assistance.
5. Long rafter or attic joist spans may require additional support along
the bottom of the rafter or joist. Consult local or regional building
codes for design and loading requirements.
6. Lay both furnaces in the required orientation with the knockouts in
the blower compartment facing upward.
7. Drill two 1/8 in. (3 mm) holes, approximately 1 in. (25 mm) below
return air flange, from inside top of return air opening and through
both furnaces, see Fig. 10.
8. Drive one factory-supplied No. 6 x 3/4 in. (19 mm) LG screw
through each hole and tighten until furnaces are secure and foam
strips have sealed gap between furnaces.
9. Drill two 1/8 in. (3 mm) holes, approximately 1 in. (25 mm) below
discharge air flange, from inside top of discharge opening and
through both furnaces, see
10. Drive one factory-supplied No. 6 x 3/4 in. (19 mm) LG screw
through each hole and tighten until furnaces are secure and foam
strips have sealed gap between furnaces.
11. Install indoor coil(s) and/or common supply plenum on supply air
outlet of furnace. Seal all duct connections to furnace with code
approved tape or sealant.
12. Connect common return plenum to furnaces. Seal all duct
connections to furnace with code approved tape or sealant.
13. Follow individual furnace installation instructions for horizontal
applications. This includes, but not limited to: condensate trap,
condensate/inducer housing tubing, pressure switch tubing venting
and electrical connections.
14. Go to Connect Electrical Components.
WARNING
!
UNIT DAMAGE AND FIRE HAZARD
Failure to follow this warning could result in unit damage, fire, personal
injury or death.
DO NOT use the back or side of the furnace for return-air duct
connections as limit cycling and unsafe operation will occur.
Horizontal Suspended Installation - Condensing
Models
1. Furnaces may be suspended using two (2) pieces of 1-1/2 in. x
1-1/2 in. x 1/4 in. (38 mm x 38 mm x 6 mm)thick cold rolled angle
iron underneath each furnace and four (4) 3/8 in. (10 mm) diameter
threaded rods. Angle iron must be positioned as shown in
2. Unistrut or similar material may be used, provided that the furnaces
do not sag in the middle or bend or twist at the support ends. The
support material must be secured to the bottom of each furnace in a
manner similar to securing angle iron to the furnace.
3. Each piece of angle iron must be secured to the bottom of each
furnace with at least two (2) #8 x 3/4 in. (19 mm) sheet metal
screws.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig. 9.
4. Drill four 5/16 in. (8 mm) holes through the angle iron and through
each side of the casing for the suspension rods as shown in
5. Lay furnaces back-to-back on a flat surface with 7/8 in. knock-outs
facing upward.
6. Drill two 1/8 in. (3 mm) holes, approximately 1 in. (25 mm) below
return air flange, from inside top of return air opening and through
both furnaces, see
7. Drive one factory-supplied No. 6 x 3/4 in. (19 mm) LG screw
through each hole and tighten until furnaces are secure and foam
strips have sealed gap between furnaces.
8. Drill two 1/8 in. (3 mm) holes, approximately 1 in. (25 mm) below
discharge air flange, from inside top of discharge opening and
through both furnaces, see
9. Drive one factory-supplied No. 6 x 3/4 in. (19 mm) LG screw
through each hole and tighten until furnaces are secure and foam
strips have sealed gap between furnaces.
10. Insert the 1/4 in. (6 mm) threaded rod through each hole in the
furnace and through the angle iron. Secure the threaded rod to the
angle iron with a washer, lock washer and nut.
11. To prevent the rod from falling out of the furnace, install a washer,
lock washer and nut on portion of the threaded rod above the
furnace.
12. Raise and suspend the furnaces using the appropriate lift and secure
the threaded rod with the appropriate field-supplied hardware. Use
locking hardware such as lock washers and jamb nuts to prevent
nuts or bolts from loosening.
13. Install indoor coil(s) and/or common supply plenum on supply air
outlet of furnace. Seal all duct connections to furnace with code
approved tape or sealant.
14. Connect common return plenum to furnaces. Seal all duct
connections to furnace with code approved tape or sealant.
15. Follow individual furnace installation instructions for horizontal
applications. This includes, but not limited to: condensate trap,
condensate/inducer housing tubing pressure switch tubing venting
and electrical connections.
16. Go to Connect Electrical Components.
UNIT DAMAGE AND FIRE HAZARD
Failure to follow this warning could result in unit damage, fire, personal
injury or death.
DO NOT use the back or side of the furnace for return-air duct
connections as limit cycling and unsafe operation will occur.
Horizontal Suspended Installation -
Non-Condensing Models
1. Furnaces may be suspended using two (2) pieces of 1-1/2 in. x
1-1/4-in x 1/4 underneath the furnaces and four (4) 3/8 in. diameter
threaded rods. Angle iron must be positioned as shown in
2. Allow for at least 9 inches (229 mm) in front of each door for door
removal.
3. Each piece of angle iron must be secured to the bottom of each
Fig. 14.
furnace with at least two (2) #8 x 3/4 in. sheet metal screws.
4. Maintain all clearances to combustibles per the furnace Installation,
Start-up and Operating Instructions.
5. Unistrut or similar material may be used, provided that the furnaces
do not sag in the middle or bend or twist at the support ends. The
support material must be secured to the bottom of each furnace in a
manner similar to securing angle iron to the furnace.
7
Fig. 10.
Fig. 9.
WARNING
!
Fig. 14.
Fig. 15.