White Rodgers 1F51N 619 Thermostat User Manual

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1F51N-619  
LowVoltage  
EvaporativeCoolerThermostat  
INSTALLATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
This low voltage thermostat is designed to operate with  
the White-Rodgers 8A18Z-2 Evaporative Cooler Control.  
For versatility, the thermostat subbase has a System  
Switch that lets you select VENT, COOL or OFF posi-  
tions. The Fan Switch offers the selection of LOW or  
HIGH fan speed.  
PRECAUTIONS  
If in doubt about whether your wiring is millivolt, line, or  
low voltage, have it inspected by a qualified heating and  
air conditioning contractor, electrician, or someone famil-  
iar with basic electricity and wiring.  
CAUTION  
!
Topreventelectricalshockand/orequipmentdam-  
age, disconnect electric power to system, at main  
fuse or circuit breaker box, until installation is  
complete.  
Do not exceed the specification ratings.  
All wiring must conform to local and national electrical  
codes and ordinances.  
Do not short out terminals on gas valve or primary  
control to test. Short or incorrect wiring will burn  
out heat anticipator and could cause personal  
injury and/or property damage.  
This control is a precision instrument, and should be  
handled carefully. Rough handling or distorting compo-  
nents could cause the control to malfunction.  
WARNING  
!
Do not use on circuits exceeding 30 volts. Higher  
voltagewilldamagecontrolandcouldcauseshock  
or fire hazard.  
SPECIFICATIONS  
THERMAL DATA  
ELECTRICAL DATA  
Temperature Scale Range: 1 to 5 (Cooler to Warmer)  
Switch Rating: 24VAC (30VAC max.)  
Cooling - 0 to 1.5 Amps  
Differential:  
1°F  
Switch Action: SPST - Snap Action switch  
ATTENTION!  
This product does not contain mercury. However, this product may replace a unit which contains mercury. Do not open mercury cells. If a  
cell becomes damaged, do not touch any spilled mercury. Wearing non-absorbent gloves, take up the spilled mercury with sand or other  
absorbent material and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded. Mercury must  
not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and refer to  
White-Rodgers is a division  
of Emerson Electric Co.  
PART NO. 37-6960A  
0822  
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INSTALLATION  
MOUNTING SCREWS  
ATTACH SUBBASE TO WALL  
1. Route wires from the cooling equipment to the thermostat  
location and pull wires through hole in wall so that 6 inches  
of cable protrudes.  
2. Pull wires through opening near center of subbase and  
connect wires beneath terminal screws as shown under  
wiring.  
CAPTIVE  
SCREW  
3. Push excess wiring into wall and plug hole with fire-resistant  
material (such as fiberglass insulation) to prevent drafts  
from affecting thermostat operation.  
SUBBASE  
CAPTIVE  
SCREWS  
4. Fasten subbase loosely to wall, as shown, using two mount-  
ing screws. Place a level against bottom of subbase, adjust  
until level, and then tighten mounting screws to secure  
subbase.  
THERMOSTAT  
BASE  
COVER  
3. Attach thermostat base to subbase, being sure that all  
captive screws are tightened snugly, since they serve as  
electrical connections between thermostat and subbase.  
ATTACH THERMOSTAT TO SUBBASE  
1. Remove cover from thermostat base by gripping the base in  
one hand. Use the other hand to pull gently at the top or  
bottom of the cover.  
4. Snap cover on thermostat base and set temperature lever to  
desired setting. The thermostat scale has numbers from 1 to  
5. The lower numbers represent cooler temperature and the  
higher numbers represent warmer temperature.  
2. Carefully remove the shipping protective packing from the  
switch.  
WIRING  
Take care when securing and routing wires so they  
do not short to adjacent terminals or rear of ther-  
mostat. Personal injury and/or property damage  
may occur.  
COOLING  
ANTICIPATOR  
THERMOSTAT  
SUBBASE  
All wiring should be installed according to local  
and national electrical codes and ordinances.  
COOL  
V
E
HI  
LO  
FF  
N
O
T
Refer to instruction sheet for 8A18Z-2, Evaporative  
Cooler Control for typical system hookup.  
Y
W
G
R
OPERATION  
The chart below illustrates system and thermostat function during various modes of operation.  
SUBBASE SWITCH POSITIONS  
FAN SYSTEM  
HI LO OFF COOL VENT  
SYSTEM FUNCTION  
FAN  
TIMER  
RELAY  
FAN  
SPEED  
RELAY  
COMPONENT OPERATION  
PUMP  
RELAY  
NO FAN - NO PUMP - NO COOL  
COOLING MODE - Pump relay and Fan timer relay energized by  
thermostat. Water begins circulating on cooler pads, fan will start  
on low speed after short time delay.*  
COOLING MODE - Pump relay and Fan timer relay energized by  
thermostat. Fan speed relay is energized by fan switch in "HI"  
position. Water begins circulating on cooler pads, fan will start on  
high speed after short time delay.*  
VENT MODE - Fan timer relay energized by thermostat. Fan speed  
relay is energized by fan switch in "HI" position. Fan will start on  
high speed after short time delay.*  
VENT MODE - Fan timer relay energized by thermostat. Fan  
will start on low speed after short time delay.*  
In "HI" position - No fan, but fan speed relay will  
remain energized  
* Fan timer relay energizes in approximately one minute. When  
system shuts off, relay de-energizes in approximately 1/2 minute.  
Indicates switch position on thermostat subbase and  
system function in operation.  
The Emerson logo is a  
trademark and a service mark  
of Emerson Electric Co.  
2

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