White Rodgers 1A11-2 User manual

PART NO. 37-4113E
Replaces 37-4113D
0547
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/
orblowermotorsonfancoilunitsinmanualchangeover,
heating/cooling systems. It features a system switch for
manualselectionofheat-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.
Color-coded leads are provided for connection to field
wiring. The thermostat can be wired to perform the
following functions:
- Thermostat cycles both fan and valve.
- Thermostat cycles fan only.
- Thermostat cycles valve only.
- System switch “OFF” breaks all circuits.
1A11-2
Fan Coil Heating-Cooling Thermostat
INSTALLATION INSTRUCTIONS
WHITE-RODGERS
6070
50
40
80
90
5060708090
HIGH
MED
LOW
FAN
HEAT
OFF
COOL
SYSTEM
PRECAUTIONS
Operator: Save these instructions for future use!
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.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical
codes and ordinances.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
CAUTION
!
To prevent electrical shock and/or equipment
damage,disconnectelectricpowertosystem,at
main fuse or circuit breaker box, until installa-
tion is complete.
Do not use on circuits exceeding specified volt-
age. Higher voltage will damage control - could
cause shock or fire hazard.
WARNING
!
White-Rodgers is a division
of Emerson Electric Co.
www.white-rodgers.com

2
NOTE
SELECTTHERMOSTATLOCATION
Proper location insures that the thermostat will provide
a comfortable home temperature. Observe the follow-
ing general rules when selecting a location:
1. Locate thermostat about 5 ft. above the floor.
2. 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.
4. Avoid locations close to windows, adjoining outside
walls, or doors that lead outside.
5. Avoid locations close to air registers or in the direct
path of air from them.
6. Make sure there are no pipes or duct work in that
part of the wall chosen for the thermostat location.
7. Never locate thermostat in a room that is warmer or
cooler than the rest of the home, such as the kitchen.
8. Avoid locations with poor air circulation, such as
behind doors or in alcoves.
9. Thelivingordiningroom isnormallyagoodlocation,
provided there is no cooking range or refrigerator on
opposite side of wall.
INSTALLTHERMOSTAT
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.
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.
SPECIFICATIONS
Contact Structure: Snap action
Electrical Rating:
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
Switch Action: SPDT
(Heating - open on rise)
(Cooling - close on rise)
Temperature Range: 36°F to 90°F (2°C to 32°C)
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.
System Switch: Heat - Off - Cool
Fan Switch : Low - Medium - High
FAN
SYSTEM
LOW
HEAT
5060
WHITE-RODGERS
708090
40
40
50
60 70
80
90
4 x 4
JUNCTION
BOX
ADAPTER PLATE
(NOT PROVIDED)
USE 2 x 4 OR 4 x 4
JUNCTION BOX
1A11-2
MOUNTING
SCREWS (2)
VOLTAGE (AC) 120V 240V 277V
Full Load Amps. 5.5 2.75 2.3
Locked Rotor Amps. 33.0 16.5 13.8
Pilot Duty 125VA
CAUTION
!
INSTALLATION
Install the thermostat as follows:
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.
2. Remove thermostat cover by grasping top and bottom
ofcoverandpullstraightout.Dresswiringintojunction
boxand secure thermostat to outlet box withmounting
screws.
DO NOT PUSH OR DAMAGE THE TEMPERATURE
KNOB DURING INSTALLATION.
3. Install thermostat cover, turn knob to desired set-
ting, and set selector switches for the appropriate
system function and fan speed.
CAUTION
!

3
INSTALLATION (cont’d)
WIRING
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.
Varying the wiring can alter the thermostat/system
operation as shown below:
- For the thermostat to cycle both fan and valve,
connect all wires as shown.
- 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.
- 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.
NOTE: With the system switch in the OFF position, the
thermostat will prevent both the fan and valve circuits
from turning on.
TAN
BLUE
COOL
COOL
HEAT
HEAT
VALVE
(SOL) L1*
(HOT) GNDHIGH
HIGH
FAN
SWITCH
SYSTEM
SWITCH
MED
FAN
MED
OFF
LOW
LOW
RED
BLUE
RED
ORANGE
BLACK
GREEN
1A11-2
5-wire with ground, for single valve,
manual heat/cool changeover
CUSTOMER
CONNECTIONS
Note: Above FAN and SYSTEM switches shown in
MED and HEAT positions respectively.
THERMOSTAT
SCHEMATIC
*L1 is Power In
CAUTION
!
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.
All wiring should be done according to local and national
electrical codes and ordinances.
The Emerson logo is a
trademark and a service mark
of Emerson Electric Co.