66389-BIM-C-1208
20
Johnson Controls Unitary Products
OPTIONAL ELECTRIC HEAT
The factory-installed heaters are wired for single point power
supply. Power supply need only be brought into the single
point terminal block.
These CSA approved heaters are located within the central
compartment of the unit with the heater elements extending
into the supply air chamber.
Fuses are supplied, where required, by the factory. Some kW
sizes require fuses and other do not. Refer to Table 11 for
minimum CFM limitations and to Tables 8 through 9 for elec-
trical data.
TABLE 10: PHYSICAL DATA
Component
Model
DW-12
Evaporator
Blower
Blower, Centrifugal (Dia. X Wd. in.)
15 x 15
Motor, Standard (HP)
3
Motor, Optional (HP)
5
Evaporator
Coil
Rows
4
Fins per Inch
15
Height (in.)
40
Face Area (ft.
2
each)
13.2
Condenser
Fan
(4 per Unit)
Propeller Dia. (in., each)
24
Motor (HP, each)
1/3
CFM, Nominal (each)
3500
Condenser
Coil
(2 per unit)
Rows (each)
2
Fins per Inch
15
Height (in. each)
36
Face Area (ft.
2
each)
11.88
Refrigerant
Charge
System 1 (lb./oz.)
21/0
System 2 (lb./oz.)
20/8
Compressors
Quantity
2
Type
Scroll
Air Filters
Size (Wd. x Ht. x Thickness in.)
25x20x2
Number Per Unit
4
TABLE 11: MINIMUM SUPPLY AIR CFM
Heater
Unit Model Size, Nominal Tons
kW
Voltage
12.5
Minimum Supply Air CFM
18
208/230
3750
24
36
54
18
480
3750
24
36
54
18
600
3750
24
36
54
