FURNACE ASSEMBLY - MC SERIES COILS ONLY
MC coils are supplied ready to be installed in a horizontal position. A horizontal pan is factory installed. MC coils should be installed in all hor- izontal applications with the horizontal drain pan side down.
Mounting Plate |
Furnace |
FIGURE 4: Horizontal Right Application
For horizontal left hand applications no conversion is required to an MC
C
D(Min)
Field
Fabricated 
Ductwork
Upflow 
Coil
Upflow |
Furnace |
Flexible 
Duct Collar
Do not drill or Screw this flange
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 Figures 6.
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 Figures 6
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 Figures 6
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 6.
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 Figure 6.
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 Figure 6.
Use tie plate |
supplied with coil |
Gas Furnace |
FIGURE 7: Horizontal Left or Right application (Right Shown)
6 | Johnson Controls Unitary Products |
