Technical Guide

718432-YTG-E-0314
Johnson Controls Unitary Products 67
Note: For units applied with a roof curb, the minimum clearance may be reduced from 1 inch to 1/2 inch
between combustible roof curb material and this supply air duct.
Unit Dimensions Front and Bottom
Table 6: DEX Unit Dimensions Front
Unit Model
Dimensions
“A”
DEX 024, 030, 036 33-1/2
DEX 042, 048 41-1/2
DEZ/DEQ/DEX Cooling Only 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.
36 Right 24
Front 12 Left 24
Rear 0 Bottom
2 3
2. Units may be installed on combustable floors made from wood or class A, B or C roof covering
materials.
3. Minimum Clearance of 1inch all sides of supply air duct for the first 3 foot of duct for 20 & 25 kW., zero
inches there after. For all other heaters, zero inch clearance all sides for entire length of duct.
0
6
19-1/4
11-7/8
8-7/8
FRONT
GAS SUPPLY 1-5/8"
DIA. KNOCKOUT (1/2"
NPTF CONNECTION)
LOW VOLTAGE
CONN. 7/8" DIA.
KNOCKOUT
4-5/8
26-3/4
CONDENSATE
DRAIN 3/4" NPTF
HIGH VOLTAGE
CONN. 1-3/32"
DIA. KNOCKOUT
LOW VOLTAGE
CONN. 7/8" DIA.
KNOCKOUT
HIGH VOLTAGE
CONN. 1-31/32" x 7/8"
KNOCKOUT
22-1/2
43-1/2
40-1/2