5168275-JIM-I-1121
12 Johnson Controls Ducted Systems
Figure 10: J15/20XP Unit Dimensions Rain Hood
Note: Units and ductwork are approved for zero clearance to combustible material when equipped with electric
heaters.
Figure 11: J15/20XP Roof Curb
Table 4: J15/20XP Unit Clearances
Direction Distance (in.) Direction Distance (in.)
Top
1
1. Units must be installed outdoors. Over hanging structure or shrubs should not obscure condenser air discharge outlet.
72 With 36 Maximum Horizontal Overhang
(For Condenser Air Discharge)
Right 36
Front 36 Bottom
2
2. Units may be installed on combustable floors made from wood or class A, B or C roof covering materials.
0
Rear
24 (W/O Economizer)
Left
24 (W/O Economizer)
49 (W/Economizer) 36 (W/Economizer)
3
3. If economizer is factory installed, the unassembled rain hood must be removed from its ride along position in front of the
evaporator coil, or in the outdoor air compartment, prior to final installation.
LH View
92”28-3/16”
36-5/8”
5”
16-1/8”
Rear View
Supply Air
Compartment
Power Exhaust
Rain Hood
(on Return
Air Compartment)
Economizer Motorized
Damper Rain Hood
(on Outdoor
Air Compartment)
Economizer/Motorized Damper
and Power Exhaust Rain Hood
Fixed
Outdoor Air
Intake Hood
(Located on
Return Air
Compartment)
1” Condensate
Drain (Must be
Trapped)
Detail “Y”
Unit with Rain Hoods
25-1/4"
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