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ZU-A3 thru -A5 Two Stage Gas Physical Data (Continued)
Component
Nominal Tonnage
CONDENSER FAN DATA
Quantity of fans
Fan diameter (Inch)
Type
Drive type
Quantity of motors
Motor HP each
No. speeds
RPM
Nominal total CFM
BELT DRIVE EVAP FAN DATA
Quantity
Fan Size (Inch)
Type
Motor Sheave
Blower Sheave
Belt
Motor HP each
RPM
Frame size
FILTERS
Quantity - Size
st
1. 1
Stage Capacity is 75% of Full Capacity.
st
2. 1
Stage Capacity is 70% of Full Capacity.
3. 2 In. Throwaway, Standard, MERV (Minimum Efficiency Reporting Value) 3.
4. 2 In. Pleated, Optional, MERV 7.
5. 4 In. Pleated, Optional, MERV 13.
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.
Table 10: Electric Heat Minimum Supply Air
Size
(Tons)
-A3
(3)
-A4
(4)
-A5
(5)
Johnson Controls Unitary Products
1VM34
Model
Voltage
208/230-3-60
ZU
460-3-60
600-3-60
208/230-3-60
ZU
460-3-60
600-3-60
208/230-3-60
ZU
460-3-60
600-3-60
ZU-A3
3.0
1
24
Prop
Direct
1
1/3
1
850
3300
1
12 x 9
Centrifugal
1VL44
1VM34
AK69
AK69
A47
A47
1-1/2
1-1/2
1725
1725
56
56
3,4
4 - (24 x 16 x 2)
5
4 - (24 x 16 x 4)
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.
3
960
980
-
-
-
-
-
-
-
Models
ZU-A4
4.0
1
24
Prop
Direct
1
1/3
1
850
3700
1
12 x 9
Centrifugal
1VL44
AK56
AK56
A47
A47
1-1/2
1-1/2
1725
1725
56
56
3,4
4 - (24 x 16 x 2)
5
4 - (24 x 16 x 4)
Minimum Supply Air (CFM)
Heater kW
6
9
15
960
1020
1000
960
960
960
-
960
960
1280
1420
1400
1400
1400
1400
-
1400
1400
1600
1600
1600
1600
1600
1600
-
1600
1600
689670-BIM-A-0311
ZU-A5
5.0
2
24
Prop
Direct
2
1/3
1
850
6700
1
12 x 9
Centrifugal
1VL40
1VP56
AK61
AK74
A47
A51
1-1/2
2
1725
1725
56
56
3,4
4 - (24 x 16 x 2)
5
4 - (24 x 16 x 4)
20
24
-
-
-
-
-
-
1400
-
1400
-
1400
-
1600
1600
1600
1600
1600
1600
27
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