Horizontal Applications
The G61MP furnace can be installed in horizontal applica- tions with either right− or left−hand air discharge.
The G61MP may also be installed as a unit heater. Either suspend the furnace as shown in figure 18, or install the furnace on a field−fabricated raised platform. The unit must be supported at both ends and beneath the blower deck to prevent sagging.
Refer to figure 17 for clearances in horizontal applications.
Horizontal Application
Installation Clearances
| Right−Hand Discharge |
| Top |
Left End | Right End |
| Bottom (Floor)** |
| Left−Hand Discharge |
| Top |
Left End | Right End |
| Bottom (Floor)** |
Top | 0 |
Front* | 0 |
Back | 0 |
Ends | 0 |
Vent | 0 |
Floor | 0‡ |
*Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. **A 5−1/2ained below the unit to
provide for servicing of the condensate trap.
‡For installations on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring.
FIGURE 17
Suspended Installation of Horizontal Unit
NOTE − If unit is suspended in attic or crawl space, horizon- tal support kit (Cat No. 56J18 ordered separately) must be used to ensure proper unit support and coil drainage.
1 − Select location for unit keeping in mind service and other necessary clearances. See figure 17.
2 − Provide service platform in front of unit.
3 − If unit is installed above finished space, fabricate a drain pan fitted with a 1/2 inch or 3/4 inch N.P.T. fitting.
4 − Using 3/8 inch rods and support frame kit or field−fabri- cated supports, fabricate suspension hangers, keep- ing in mind front service access clearances.
5 − Mount unit on support frame as shown in figure 18.
6 − Continue with exhaust, condensate and intake line piping instructions.
7 − If unit is suspended above finished space, hang the field−provided drain pan below the support frame as shown in figure 18. Leave 5−1/2 inches for service clearance below unit for condensate trap.
8 − Route auxiliary drain line so that water draining from this outlet will be easily noticed by the homeowner. If necessary, run the condensate line into a condensate pump to meet drain line slope requirements. The pump must be rated for use with condensing furnaces. Protect the condensate discharge line from the pump to the outside to avoid freezing.
TYPICAL HORIZONTAL CEILING APPLICATION | |||
BLOWER ACCESS PANEL | 3/8 in. RODS | ||
INTAKE/EXHAUST |
|
| |
CONNECTION |
|
| |
SUPPORT FRAME | DRAIN PAN | ||
(to protect finished space) | |||
| |||
FIGURE 18
Platform Installation of Horizontal Unit
1 − Select location for unit keeping in mind service and other necessary clearances. See figure 17.
2 − Construct a raised wooden frame and cover frame with a plywood sheet. Provide a service platform in front of unit. If unit is installed above finished space, fabricate a drain pan to be installed under unit.
When installing the unit in a crawl space, a proper sup- port platform may be created using cement blocks and the horizontal support frame kit (ordered separately,
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