Tempstar F97CMN Installation, Start-Up, Operating And Service And Maintenance Instructions page 19

F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
Fig. 25 – Working Platform for Attic Installation
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
Fig. 26 – Suspended Furnace Installation
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used,
see Fig. 27. Install field-supplied, 5/16 x 1-1/2 in. (8 x 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
NOTE: Bottom closure must be used when leveling legs are used. It
may be necessary to remove and reinstall bottom flash to install leveling
legs. To remove bottom closure panel, see
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each bottom
corner of furnace.
2. For each leg, install nut on bolt and then install bolt with nut in
hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install flat washer
if desired.)
4. Adjust outside nut to provide desired height, and tighten inside nut
to secure arrangement.
5. Reinstall bottom closure panel if removed.
5/ 16
(8mm)
A150580
(44mm)
(8mm)
Location Relative to Cooling Equipment
The cooling coil must be installed parallel with, or on the downstream
side of the unit to avoid condensation in the heat exchangers. When
installed parallel with the furnace, dampers or other flow control must
prevent chilled air from entering the furnace. If the dampers are
manually operated, they must be equipped with means to prevent
operation of either unit unless the damper is in the full-heat or full-cool
position.
Platform Furnace Support
Construct working platform at location where all required furnace
clearances are met, see
mm) clearance requirement on side, set furnace on non-combustible
A150581
blocks, bricks or angle iron. For crawlspace installations, if the furnace
is not suspended from the floor joists, the ground underneath furnace
must be level and the furnace set on blocks or bricks.
Suspended Furnace Support
The furnace must be supported under the entire length of the furnace
with threaded rod and angle iron, see
bottom of furnace as shown.
Roll-Out Protection
Provide a minimum 12-in. x 22-in. (305 x 559 mm) piece of sheet metal
for flame roll-out protection in front of burner area for furnaces closer
19
Fig. 23.
"
(8mm)
"
5/ 16
"
3
1 /
4
"
1 3 /
4
(44mm)
"
5
/
16
(8mm)
"
5/ 16
"
3/ 4
(44mm) 1
"
3/ 4
1
(44mm)
Fig. 27 – Leveling Legs
Table 1 and Fig. 25. For furnaces with 1-in. (25
Fig. 26. Secure angle iron to
A89014