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Electric Preheater Models
Table 31: Electric Preheater Models.
Model No.
Capacity
ZWPREHTR01
10 kW
ZWPREHTR02
20 kW
Electric Preheater Specifications
Table 33:
Model No.
Power Supply
ZWPREHTR01
208 / 230V, 60Hz, 1Ph
ZWPREHTR02
208 / 230V, 60Hz, 1Ph
* Indicates an item automatically selected per ET/UL or NEC requirements.
Table 34: Electric Preheater Accessories.*
Accessories Code*
03
06
08
14
Minimum Entering Temperature by Airflow
Outdoor unit's operation range limit is -22°F. In the case of the ZWPREHTR02 (20 kW) model, the refrigerant cycle's operating limit extends to tem-
peratures below -22°F.
Table 35: ZWPREHTR01 (10 kW) Minimum Entering Temperatures.
Air Flow Rate (CFM)
900
1,000
1,100
1,200
1,300
1,400
1,500
1,600
1,700
1,800
1,900
2,000
ELECTRIC PREHEATER ACCESSORY
Power Supply
Control Step
208 / 230V, 60Hz, 1Ph
SCR 1:10
208 / 230V, 60Hz, 1Ph
SCR 1:10
Amps
48.1
95.7
Name
Disconnecting Contactors
Manual Backup Limits
Power Fusing
Control Transformer
Minimum Entering Temperature (°F)
-21
-18
-15
-12
-10
-9
-7
-6
-5
-4
-3
-2
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Minimum Airflow by Heater Capacity
Table 32:
Model No.
Capacity
ZWPREHTR01
10 kW
ZWPREHTR02
20 kW
MOCP
Control
70
24V AC
125
24V AC
Contactors provide full disconnection of all non-neutral voltage legs.
Manually resettable thermal overloads.
Protects each heater circuit from overvoltage / overcurrent.
Used when control voltage differs from line voltage.
Table 36: ZWPREHTR02 (20 kW) Minimum Entering Temperatures.
Air Flow Rate (CFM)
1,100
1,200
1,300
1,400
1,500
1,600
1,700
1,800
1,900
2,000
General Data
900
1,100
Stage
Mount
Accessories Code
1
Slip-In
1
Slip-In
*03, *06, *08, *14
Description
Minimum Entering Temperature (°F)
-40
-37
-33
-30
-27
-25
-23
-21
-19
-18
*03, *06, *08
51
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