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Table 4: Unit Dimensions
Model
PHE4B36
PHE4B48
PHE4B60
HIGH VOLTAGE
CONNECTION 7/8"
HIGH VOLTAGE
CONNECTION 1-3/32"
COMPRESSOR
ACCESS PANEL
CONDENSATE
DRAIN
BLOWER
ACCESS
PANEL
FIGURE 3: Unit Dimensions
Table 5: Unit Clearances
Direction
1
Top
Side Opposite Ducts
Duct Panel
1. There must be a minimum clearance of 1 in. on all sides of the supply air duct for the first 3 ft of the duct for 20 kW and 25 kW heaters (0 in. thereafter). For all other
heaters, there must be a 0 in. clearance on all sides for the entire length of the supply air duct.
2. Units must be installed outdoors. Overhanging structures or shrubs must not obstruct the outdoor air discharge outlet.
3. Units can be installed on combustible materials made from wood or class A, B, or C roof covering materials if factory base rails are left in place as shipped.
Note: For units with a roof curb, the minimum clearance between combustible roof curb material and the supply air duct can be reduced from 1 in. to 1/2 in.
Johnson Controls Ducted Systems
A
51-1/4
51-1/4
51-1/4
A
CONTROL ACCESS
PANEL
Distance (in.)
36
36
0
Dimensions (in.)
B
45-3/4
45-3/4
45-3/4
COIL GUARD
C
B
LOW VOLTAGE CONNECTION
Direction
Right Side
Left Side
2,3
Bottom
5151094-UIM-H-0220
C
49
53
55
HEAT SECTION
ACCESS PANEL
A0379-001
Distance (in.)
36
24
1
5
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