Emerson 1A11-2 Manuel D’Utilisation
1A11-2 LIGHT DUTY FAN COIL THERMOSTAT
For Direct Control of Line Voltage Valves and/or Blower Motors on
Fan Coil Units Featuring Manual Changeover From Heat to Cool and
a 3-Speed Fan Switch, Subbase Included
FEATURES
• Mounts to a standard vertical outlet box or on a two-gang outlet box. May also be
mounted on a 4” x 4” junction box with an adapter (not provided).
• Wiring color coded for ease of installation.
• 3-speed manual fan switch: High – Medium – Low.
• System Switch: Heat – OFF – Cool. “OFF” breaks both valve and fan circuits.
• Beige color.
1A11-2
– Thermostat cycles both fan and valve
– Thermostat cycles fan only (if valve is not used tape orange lead)
– System “OFF” breaks both valve and fan circuits
– Thermostat cycles valve only with continuous fan (interchange valve and L1 leads)
– Thermostat cycles fan only (if valve is not used tape orange lead)
– System “OFF” breaks both valve and fan circuits
– Thermostat cycles valve only with continuous fan (interchange valve and L1 leads)
SPECIFICATIONS
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . 4
1
/
2
”
H x 4
1
/
2
”
W x 2
1
/
4
”
D
Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . U.L. listed and C.S.A. approved
PARTS AND ACCESSORIES
• Thermostat guards – see pages 24-25
LINE VOLTAGE
THERMOSTATS
TAN
BLUE
COOL
COOL
HEAT
HEAT
VALVE
(SOL)
L1*
(HOT) GND
HIGH
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
Model
Number
Range
Differential
Switch
Action
Contact Ratings
Pilot Duty
Motor Ratings (inductive) Full Load
Motor Ratings (inductive) Locked Rotor
120/240
120 VAC
240 VAC
277 VAC
120 VAC
240 VAC
277 VAC
277 VAC
1A11-2
36 to 90°F
(2 to 32°C)
1.5°F
SPDT
5.5A
2.75A
2.3A
33.0A
16.5A
13.8A
120A
THERMOST
ATS
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