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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)
➀
1°F
Off – Cool – Vent
Hi – Lo
➀
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
➀
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
➀
U.L. listed
CONTACT RATINGS
EVAPORATIVE
COOLING
www.white-rodgers.com85
COOLING /
REFRIGERATION