Emerson 1A11 2 Thermostat User Manual

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1
A11-2  
Fan Coil Heating-Cooling Thermostat  
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  
The 1A11-2 thermostat controls line voltage valves and/  
or blower motors on fan coil units in manual changeover,  
heating/cooling systems. It features a system switch for  
manual selection of heat -off-cool, a three speed manual  
fan control switch, an adjustable temperature dial with  
a 36 to 90°F range, and an indicating thermometer, all  
combined in one deluxe-styled control.  
5
0
60  
70  
FAN  
80  
90  
HIGH  
MED  
LOW  
WHITE-RODGERS  
60  
7
0
5
0
8
0
HEAT  
Color-coded leads are provided for connection to field  
wiring. The thermostat can be wired to perform the  
following functions:  
OFF  
4
0
COO  
L
9
0
SYSTEM  
-
-
-
-
Thermostat cycles both fan and valve.  
Thermostat cycles fan only.  
Thermostat cycles valve only.  
System switch “OFF” breaks all circuits.  
PRECAUTIONS  
If in doubt about whether your wiring is millivolt, line, or  
low voltage, have it inspected by a qualified heating and  
airconditioningcontractor, electrician, orsomeonefamil-  
iar with basic electricity and wiring.  
CAUTION  
!
To prevent electrical shock and/or equipment  
damage, disconnectelectricpowertosystem, at  
main fuse or circuit breaker box, until installa-  
tion is complete.  
Do not exceed the specification ratings.  
All wiring must conform to local and national electrical  
codes and ordinances.  
WARNING  
Do not use on circuits exceeding specified volt-  
age. Higher voltage will damage control - could  
cause shock or fire hazard.  
!
This control is a precision instrument, and should be  
handled carefully. Rough handling or distorting compo-  
nents could cause the control to malfunction.  
White-Rodgers is a division  
of Emerson Electric Co.  
www.white-rodgers.com  
PART NO. 37-4113E  
Replaces 37-4113D  
0547  
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SPECIFICATIONS  
Switch Action: SPDT  
Contact Structure: Snap action  
(
(
Heating - open on rise)  
Cooling - close on rise)  
Electrical Rating:  
VOLTAGE (AC)  
Full Load Amps.  
Locked Rotor Amps.  
Pilot Duty  
120V  
5.5  
240V  
2.75  
277V  
2.3  
Temperature Range: 36°F to 90°F (2°C to 32°C)  
33.0  
16.5  
13.8  
CAUTION  
!
125VA  
When the thermostat is set below 40°F (5°C),  
damage to the building and/or contents may  
result due to freezing. This is possible due to  
factory calibration tolerances, thermostat loca-  
tion and operating characteristics of the heat-  
ing equipment.  
Mounting: Standard 2 x 4 inch outlet box or 2-ganged  
outlet boxes. Mounting screws are provided with the  
thermostat. With a standard adapter plate (not pro-  
vided), this thermostat may be mounted on a 4 inch  
square junction box  
System Switch: Heat - Off - Cool  
Fan Switch : Low - Medium - High  
INSTALLATION  
Install the thermostat as follows:  
SELECT THERMOSTAT LOCATION  
1
. Before mounting, connect system wiring to proper  
color-coded leads at rear of thermostat. Follow  
equipment manufacturer's instructions or refer to  
wiring diagram for typical system hookups.  
Proper location insures that the thermostat will provide  
a comfortable home temperature. Observe the follow-  
ing general rules when selecting a location:  
1
2
. Locate thermostat about 5 ft. above the floor.  
2
. Remove thermostat cover by grasping top and bottom  
of cover and pull straight out. Dress wiring into junction  
box and secure thermostat to outlet box with mounting  
screws.  
. Install thermostat on a partitioning wall, not on an  
outside wall.  
3
. Never expose thermostat to direct light from lamps,  
sun, fireplaces or any temperature radiating equip-  
ment.  
NOTE  
4
5
6
7
8
9
. Avoid locations close to windows, adjoining outside  
walls, or doors that lead outside.  
DO NOT PUSH OR DAMAGE THE TEMPERATURE  
. Avoid locations close to air registers or in the direct KNOB DURING INSTALLATION.  
path of air from them.  
3
. Install thermostat cover, turn knob to desired set-  
. Make sure there are no pipes or duct work in that  
part of the wall chosen for the thermostat location.  
ting, and set selector switches for the appropriate  
system function and fan speed.  
. Never locate thermostat in a room that is warmer or  
cooler than the rest of the home, such as the kitchen.  
. Avoid locations with poor air circulation, such as  
behind doors or in alcoves.  
ADAPTER PLATE  
(NOT PROVIDED)  
. The living or dining room is normally a good location,  
provided there is no cooking range or refrigerator on  
opposite side of wall.  
4
x 4  
JUNCTION  
BOX  
INSTALLTHERMOSTAT  
CAUTION  
FAN  
!
LOW  
To prevent electrical shock and/or equipment  
damage, disconnect electric power to system  
at main fuse or circuit breaker box until instal-  
lation is complete.  
HEAT  
7
0
8
0
90  
SYSTEM  
50  
60  
USE 2 x 4 OR 4 x 4  
JUNCTION BOX  
ODG  
ERS  
E-R  
HIT  
W
The thermostat may be mounted on a standard 2 x 4  
inch vertical outlet box or 2-ganged outlet boxes. When  
mounting to a 4 x 4 inch junction box is required, use of  
a standard adapter plate (not provided) is necessary.  
USE COPPER CONDUCTORS ONLY.  
7
0
60  
80  
1A11-2  
5
0
9
0
MOUNTING  
SCREWS (2)  
4
40  
0
2
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INSTALLATION (contd)  
WIRING  
NOTE  
This typical wiring diagram shows only the terminal  
identification and wiring hookup. Always refer to wiring  
instructions, provided by equipment manufacturer, for  
system hookup operation.  
CAUTION  
!
To prevent electrical shock and/or equipment  
damage, disconnect electric power to system  
at main fuse or circuit breaker box until instal-  
lation is complete.  
All wiring should be done according to local and national  
electrical codes and ordinances.  
FAN  
VALVE L1*  
HIGH MED LOW (SOL) (HOT) GND  
Varying the wiring can alter the thermostat/system  
operation as shown below:  
CUSTOMER  
CONNECTIONS  
-
For the thermostat to cycle both fan and valve,  
connect all wires as shown.  
THERMOSTAT  
SCHEMATIC  
-
For the thermostat to cycle fan only (if valve is  
not used), do not connect the thermostat orange  
wire to the system. Wrap orange lead with approved  
electrical tape or wire nut to prevent shorting.  
HIGH  
FAN  
SWITCH  
MED  
LOW  
-
For the thermostat to cycle the valve only (with  
fan on continuously), Connect orange wire to L1  
and black wire to VALVE. Connect all other wires as  
shown.  
HEAT  
COOL  
RED  
HEAT  
SYSTEM  
SWITCH OFF  
NOTE: With the system switch in the OFF position, the  
thermostat will prevent both the fan and valve circuits  
from turning on.  
COOL  
BLUE  
*L1 is Power In  
Note: Above FAN and SYSTEM switches shown in  
MED and HEAT positions respectively.  
1
A11-2  
5
-wire with ground, for single valve,  
manual heat/cool changeover  
The Emerson logo is a  
trademark and a service mark  
of Emerson Electric Co.  
3

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