Emerson 1A11-2 User's Manual
Contents
1. control to malfunction Ar uy EMERSON White Rodgers is a division of Emerson Electric Co www white rodgers com To prevent electrical shock and or equipment damage disconnect electric power to system 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 PART NO 37 4113E Replaces 37 4113D 0547 SPECIFICATIONS 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 INSTALLATION SELECT THERMOSTAT LOCATION 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 out2. lead with approved FAN MED electrical tape or wire nut to prevent shorting SWITCH ow 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 HEAT SYSTEM SWITCH OFF COOL BLUE L1 is Power In Note Above FAN and SYSTEM switches shown in MED and HEAT positions respectively 1A11 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
3. 1A11 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 White y Rodgers 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 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 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 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
4. side 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 The living or dining room is normally a good location provided there is no cooking range or refrigerator on opposite side of wall INSTALL THERMOSTAT 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 2 Contact Structure Snap action Electrical Rating Locked Rotor Amps Pilot Duty 125VA 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 Install the thermostat as follows 1 Before mounting connect system wiring to proper color coded leads at rear of thermostat Follow equipment manufacturer s instr
5. uctions or refer to wiring diagram for typical system hookups 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 NOTE 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 ADAPTER PLATE NOT PROVIDED 4x4 O USE 2x4OR4x4 JUNCTION BOX MOUNTING SCREWS 2 INSTALLATION cont d WIRING NOTE This typical wiring diagram shows only the terminal identification and wiring hookup Always refer to wiring To prevent electrical shock and or equipment instructions provided by equipment manufacturer for damage disconnect electric power to system system hookup operation 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 ASS i D VALVE L1 Varying the wiring can alter the thermostat system HIGH MED LOW SOL HOT GND operation as shown below W O CUSTOMER Z For the thermostat to cycle both fan and valve SONNECTIONS connect all wires as shown SMCS O ad ee eee SCHEMATIC For the thermostat to cycle fan only if valve is not used do not connect the thermostat orange HIGH wire to the system Wrap orange
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