127421-YIM-C-0606
22 Unitary Products Group
FACTORY INSTALLED OPTIONS/
FIELD INSTALLED ACCESSORIES
ELECTRIC HEAT ACCESSORY
Electric heaters are available as field installed accessories.
Refer to electric heat instructions for installation. These heat-
ers mount in the heat compartment with the heating elements
extending into the supply air chamber. All electric heaters are
fused and intended for use with single point power supply.
ELECTRIC HEAT OPTION
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 20 for
minimum CFM limitations and to Tables 9 through 18 for elec-
trical data.
TABLE 19: PHYSICAL DATA
Component
Model
078 090 102 120 150
Evaporator Blower
Blower, Centrifugal (Dia. X Wd. in.) 15x15 12 x 12 15x15 15 x 15 15 x 15
Motor, Standard (HP) 1-1/2 2 2 2 3
Motor, Optional (HP) 2 3 3 3 5
Evaporator Coil
Rows 3 3 3 4 4
Fins per Inch 15 15 15 15 15
Height (in.) 40 32 40 40 40
Face Area (ft.
2
each)
13.2 10.6 13.2 13.2 13.2
Condenser Fan
(2 per Unit)
Propeller Dia. (in., each) 24 24 24 24 24
Motor (HP, each) 1/3 1/3 3/4 3/4 3/4
CFM, Nominal (each) 1700 1700 2200 2200 2200
Condenser Coil
(2 per unit)
Rows (each) 1 2 2 2 2
Fins per Inch 20 20 20 20 20
Height (in., each) 44 36 44 44 44
Face Area (ft.
2
each)
14.5 11.9 14.5 14.5 14.5
Refrigerant Charge
System 1 (lb./oz.) 18/0 12/0 13/8 15/4 12/12
System 2 (lb./oz.) N/A 12/0 13/8 15/4 12/12
Compressors
Quantity 1 2 2 2 2
Type Scroll Recip Recip Recip Scroll
Air Filters
Size (Wd. x Ht. x Thickness in.) 25x20x2 25x16x2 25x20x2 25x20x2 25x20x2
Number Per Unit 4 4 4 4 4
TABLE 20: ELECTRIC HEAT MINIMUM SUPPLY AIR
HEATER
UNIT MODEL SIZE, NOMINAL TONS
kW
VOLTAGE
6.5
7.5 8.5 10 12.5
MINIMUM SUPPLY AIR CFM
9
208/230
1950 2250 2550 N/A N/A
18
1950 2250 2550 3000 3750
24
1950 2250 2550 3000 3750
36
1950 2250 2550 3000 3750
54
N/A N/A N/A 3500 4000
9
480
1950 2250 2550 N/A N/A
18
1950 2250 2550 3000 3750
24
1950 2250 2550 3000 3750
36
1950 2250 2550 3000 3750
54
N/A N/A N/A 3000 3750
9
600
1950 2250 2550 N/A N/A
18
1950 2250 2550 3000 3750
24
1950 2250 2550 3000 3750
36
1950 2250 2550 3000 3750
54
N/A N/A N/A 3500 3750
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