For horizontal left hand applications no conversion is required to an MC coil when used with a downflow/horizontal furnace. A mounting plate, supplied with every coil should always be installed on the side desig- nated as top side. See Figures 4 & 5.
Mounting Plate
Furnace
FIGURE 5: Horizontal Left Application
FURNACE ASSEMBLY - PC SERIES COILS
These upflow coils are designed for installation on top of upflow fur- naces only.
If the coil is used with a furnace of a different size, use a 45° transition to allow proper air distribution through the coil.
1.Position the coil casing over the furnace opening as shown in Fig- ure 6, "PC Series Upflow Coil Installation".
2.Place the ductwork over the coil casing flange and secure.
3.Check for air leakage between the furnace and coil casing and seal appropriately.
Do not drill any holes or drive any screws into the front duct flange on the coil in order to prevent damaging coil tubing. See Figure 6, "PC Series Upflow Coil Installation"
C
D(Min)
|
| Flexible | |
|
| Duct Collar | |
Field |
|
| |
Fabricated |
|
| |
Ductwork |
| Do not drill | |
|
| or Screw | |
Upflow |
| this flange | |
Coil |
|
| |
Upflow |
|
| |
Furnace |
|
| |
Primary | Secondary | Alternate | |
Drain | Drain Location | ||
Drain | |||
|
|
FIGURE 6: PC Series Upflow Coil Installation
Table 2: Coil Projection Dimensions - PC Series Coils
COIL SIZE | DIMENSION “C” INCH |
PC18 | |
PC24 | |
PC30, PC32, PC35 | |
PC42, PC43, PC36, PC37 | |
PC48 | |
PC60 | 9 |
NOTE: Dimension “C” should be at least 2/3 of dimension “D”. See Fig- ure 6, "PC Series Upflow Coil Installation"
CRITICAL COIL PROJECTION
The coil assembly must be located in the duct such that a minimum dis- tance is maintained between the top of the coil and the top of the duct. Refer to Table 2, "Coil Projection Dimensions - PC Series Coils".
COIL / FURNACE ASSEMBLY - HC SERIES COILS
These coils are supplied ready to be installed in a right hand position or a left hand position. When used in conjunction with a horizontal furnace (blow through) application, the coil should be oriented with the opening of the “A” coil closest to the furnace. See Figures 7.
NOTE: Each coil is shipped with an external tie plate that should be used to secure the coil to the furnace. It should be installed on the back side of the coil using the dimpled pilot holes. See Figures 7.
Use tie plate |
supplied with coil |
Gas Furnace |
FIGURE 7: Horizontal Left or Right application (Right Shown)
DOWNFLOW DUCT CONNECTORS
All downflow installations must use a suitable duct connector approved by the furnace manufacturer for use with this furnace. The duct connec- tors are designed to be connected to the rectangular duct under the floor and sealed. Refer to the instructions supplied with the duct con- nector for proper installation. Refer to the separate accessory parts list at the end of these instructions for the approved accessory duct con- nectors.
FURNACE
WARM AIR PLENUM
WITH 1” FLANGES
FIBERGLASS
INSULATION
FIBERGLASS TAPE
UNDER FLANGE
COMBUSTIBLE FLOOR
BASE ACCESSORY
FIGURE 8: Combustible Floor Base Accessory
RESIDENTIAL AND MODULAR HOME UPFLOW RETURN PLENUM CONNECTION
Return air may enter the furnace through the side(s) or bottom depend- ing on the type of application. Return air may not be connected into the rear panel of the unit.
6 | Johnson Controls Unitary Products |
