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evaporative cooling THERMOSTAT

& control BOX

Functions as a Switching Device for the Thermostat to Provide

an Even Level of Cooling Plus a Choice of High and Low Speed

Control of the Fan on Evaporative Coolers

FEATURES

• Grey plastic case is lightweight, weather-resistant and meets all code requirements.

• Fully automatic, system designed with a fan delay (approximately 60 seconds) to

pre-wet the cooler pads before the fan starts.

• Separate fan and pump relays. High or low fan speed selection.

• Relay panel is removable from enclosure to facilitate field wiring.

• Integral transformer 120 / 240 VAC to 24 VAC 60 Hz.

SPECIFICATIONS

Dimensions 1F51N-619 . . . . . . . . . . 3

1

/

4

H x 4

1

/

2

W x 1

5

/

8

D

Dimensions 8A18Z-2 . . . . . . . . . . . 8

H x 6

W x 3

D

Electrical Rating 1F51N-619

. . . . . . . . . . . . . . . 24 VAC (30 VAC maximum)

Fixed anticipator

21D28-6

Model

Package

Number

Consists of:

21D28-6

1F51N-619 / 8A18Z-2

Model

System Switch Positions

Number

Color

Range

Differential

System Fan

1F51N-619

Classic White Scale 1-2-3-4-5 (55 to 95°F)

1°F

Off – Cool – Vent

Hi – Lo

No thermometer

Model

Input

Combined Relay Loads

Pump Relay

Fan Relay

Number

Voltage Full Load Locked Rotor Full Load Locked Rotor Full Load Locked Rotor

8A18Z-2

120 VAC 16.0A

96.0A

10.0A

60.0A

12.0A

72.0A

240 VAC 8.0A

48.0A

5.0A

30.0A

6.0A

36.0A

U.L. listed

CONTACT RATINGS

EVAPORATIVE

COOLING

www.white-rodgers.com

85

COOLING /

REFRIGERATION