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292447-YIM-A-0507
Unitary Products Group 27
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 in
to the supply air chamber.
Fuses are supplied, where required, by the factory. Some kW
sizes require fuses and others do not. refer to Table 10 for
minimum CFM limitations and to Table 8 for electrical data.
CONDENSER FAN DATA
Quantity 2 2 2 2 4
Fan diameter (Inch) 24 24 24 24 24
Type Prop Prop Prop Prop Prop
Drive type Direct Direct Direct Direct Direct
No. speeds 1 1 1 1 1
Number of motors 2 2 2 2 4
Motor HP each 1/3 1/3 1/3 1/3 1/3
RPM 850 850 850 850 850
Nominal total CFM 6800 6800 6800 6800 14000
BELT DRIVE EVAP FAN DATA
Quantity 1 1 1 1 1
Fan Size (Inch) 12 x 12 12 x 12 15 x 15 15 x 15 15 x 15
Type Centrifugal Centrifugal Centrifugal Centrifugal Centrifugal
Motor Sheave 1VM50 1VM50 1VM50 1VM50 1VM50 1VM50 1VM50 1VM50 1VM50 1VP56
Blower Sheave AK74 AK64 AK74 AK61 AK89 AK74 AK84 AK74 AK74 BK77
Belt A49 A49 A49 A49 A56 A54 A56 A54 A54 BX55
Motor HP each 1-1/2 2 1-1/2 3 2 3 2 3 3 5
RPM 1725 1725 1725 1725 1725 1725 1725 1725 1725 1725
Frame size 56 56 56 56 56 56 56 56 56 184T
FILTERS
Quantity - Size 4 - 25 x 16 x 2 4 - 25 x 16 x 2 4 - 25 x 20 x 2 4 - 25 x 20 x 2 4 - 25 x 20 x 2
Table 9: ZR078-150 Physical Data (Continued)
Component
Models
ZR078 ZR090 ZR102 ZR120 ZR150
Nominal Tonnage 6.5 7.5 8.5 10 12.5
Table 10: Electric Heat Minimum Supply Air
Size
(Tons)
Model Voltage
Minimum Supply Air (CFM)
Heater kW
9 18243654
078
(6.5)
ZR
208/230-3-60 1950 1950 1950 1950 -
460-3-60 1950 1950 1950 1950 -
600-3-60 1950 1950 1950 1950 -
090
(7.5)
ZR
208/230-3-60 2250 2250 2250 2250 -
460-3-60 2250 2250 2250 2250 -
600-3-60 2250 2250 2250 2250 -
102
(8.5)
ZR
208/230-3-60 2550 2550 2550 2550 -
460-3-60 2550 2550 2550 2550 -
600-3-60 2550 2550 2550 2550 -
120
(10)
ZR
208/230-3-60 - 3000 3000 3000 3500
460-3-60 - 3000 3000 3000 3000
600-3-60 - 3000 3000 3000 3500
150
(12.5)
ZR
208/230-3-60 - 3750 3750 3750 4000
460-3-60 - 3750 3750 3750 3750
600-3-60 - 3750 3750 3750 3750