BLOWER
SHELF
FILLER
BRACKET
RACEWAY
PLUG ASSEMBLIES
Fig. 24 Ð Filler Bracket and Blower Shelf
HORIZONTAL DUCT OPENING
Fig. 25 Ð Housing Placed for Vertical Air¯ow
ACCESSORY DUCT FLANGE KIT INSTALLATION Ð Refer to Fig. 26 for duct adapter dimensions and hole locations.
1.Mark hole locations shown in Fig. 26.
2.At marked locations, drill holes using a no. 26 (.147-in.) twist drill.
3.Partially secure duct ¯anges using two of the no. 10, 1¤2-in. screws provided.
4.See the following caution. Using remaining holes in duct ¯anges as templates, drill the remaining holes with the no. 26 (.147-in.) drill.
Do not drill deeper than 1¤2-in. into shaded area shown in Fig. 26. Damage to refrigerant coil could result.
5.Fully secure the duct ¯anges using the remaining screws provided.
The ®nished kit installation accommodates a 143¤4-in. x
143¤4-in. duct.
NOTE: Do not drill more than 1¤2-in. deep in shaded area.
Fig. 26 Ð Duct Flange Kit Ð Locating Holes
(Typical)
Step 6 Ð Provide for Condensate Disposal
NOTE: Be sure that condensate-water disposal methods com- ply with local codes, restrictions, and practices.
Unit disposes of condensate through a 3¤4-in. NPT ®tting which exits through the compressor access panel. See Fig. 2-9 for location of condensate connection.
Condensate water can be drained directly onto the roof in rooftop installations (where permitted) or onto a gravel apron in ground-level installations. Install a ®eld-supplied conden- sate trap at end of condensate connection to ensure proper drainage. Make sure that the outlet of the trap is at least 1 in. lower than the drain-pan condensate connection to pre- vent the pan from over¯owing. See Fig. 27. Prime the trap with water. When using a gravel apron, make sure it slopes away from the unit.
If the installation requires draining the condensate water away from the unit, install a 2-in. trap using a 3¤4-in. FPT connection. See Fig. 27. Make sure that the outlet of the trap is at least 1 in. lower than the unit drain-pan condensate con- nection to prevent the pan from over¯owing. Prime the trap with water. Connect a drain tube using a minimum of 3¤4-in. PVC, 3¤4-in. CPVC, or 3¤4-in. copper pipe (all ®eld supplied). Do not undersize the tube. Pitch the drain tube downward at a slope of at least 1 in. for every 10 ft of horizontal run. Be sure to check the drain tube for leaks. Prime trap at the be- ginning of the cooling season start-up.
