5803642-TIM-B-0620
Johnson Controls Ducted Systems 25
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 11 for
minimum CFM limitations and to Table 9 for electrical data.
CONDENSER FAN DATA
Quantity of fans 1 1 2
Fan diameter (Inch) 24 24 24
Type Prop Prop Prop
Drive type Direct Direct Direct
Quantity of motors 1 1 2
Motor HP each 1/3 1/3 1/3
No. speeds 1 1 1
RPM 850 850 850
Nominal total CFM 3300 3700 6300
BELT DRIVE EVAP FAN DATA
Quantity 1 1 1
Fan Size (Inch) 12 x 9 12 x 9 12 x 9
Type Centrifugal Centrifugal Centrifugal
Motor Sheave 1VM34 1VL44 1VM34 1VL44 1VL40 1VP56
Blower Sheave AK69 AK69 AK56 AK56 AK61 AK74
Belt A47 A47 A47 A47 A47 A51
Motor HP each 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 2
RPM 1725 1725 1725 1725 1725 1725
Frame size 56 56 56 56 56 56
FILTERS
Quantity - Size
4 - (24 x 16 x 2)
4,5
4 - (24 x 16 x 2)
4,5
4 - (24 x 16 x 2)
4,5
4 - (24 x 16 x 4)
6
4 - (24 x 16 x 4)
6
4 - (24 x 16 x 4)
6
1. 1st Stage Capacity is 75% of Full Capacity.
2. 1st Stage Capacity is 70% of Full Capacity.
3. ZWTA3, ZWTA4, ZWTA5 have crankcase heaters standard.
4. 2 In. Throwaway, Standard, MERV (Minimum Efficiency Reporting Value) 3.
5. 2 In. Pleated, Optional, MERV 8.
6. 4 In. Pleated, Optional, MERV 13.
ZWTA3 thru TA5 Two Stage Gas Heat Physical Data (Continued)
Component
Models
ZWTA3 ZWTA4 ZWTA5
Nominal Tonnage 3.0 4.0 5.0
Table 11: Electric Heat Minimum Supply Air
Size
(Tons)
Model Voltage
Minimum Supply Air (CFM)
Heater kW
369152024
TA3
(3)
ZW
208/230-3-60 960 960 1020 1000 - -
460-3-60 980 960 960 960 - -
600-3-60 - - 960 960 - -
TA4
(4)
ZW
208/230-3-60 - 1280 1420 1400 1400 -
460-3-60 - 1400 1400 1400 1400 -
600-3-60 - - 1400 1400 1400 -
TA5
(5)
ZW
208/230-3-60 - 1600 1600 1600 1600 1600
460-3-60 - 1600 1600 1600 1600 1600
600-3-60 - - 1600 1600 1600 1600
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