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Important Safety Information

WARNING!

Always turn off power at the main power supply before installing, cleaning, 
or removing thermostat.

• This thermostat is for 24 VAC applications only; do not use on voltages over 30 VAC
• Do not short across terminals of gas valve or system control to test operation; this will damage your 

thermostat and void your warranty

• All wiring must conform to local and national electrical and building codes
• Do not use air conditioning when the outdoor temperature is below 50 degrees; this can damage 

your A/C system and cause personal injuries

• Use this thermostat only as described in this manual

Specifications

Electrical rating:

 

• 24 VAC (18-30 VAC)
• 3.0 VDC (2 “AAA” batteries) 
• 1 amp maximum per terminal 
• 3 amp maximum total load

Temperature control range: 

45°F to 90°F (7°C to 32°C)   

Accuracy:

 ± 1°F (± 0.5°C)

System configurations:

 1-stage heat, 1-stage cool, heat pump, gas, oil, electric

Timing:

 

Anti-short Cycle: 4 minutes

 

Backlight Operation:

 5 seconds (configurable ON or OFF)

Terminations:

 G, B, O, Y, RH, RC, W, C

Package Contents/Tools Required

Package includes:

 

MP2010L

 thermostat on base, thermostat cover, wiring labels, screws and wall 

anchors, 2 “AAA” batteries, Installation, Operation and Application Guide

Tools required for installation:

 Drill with 3/16” bit, hammer, screwdriver

ELECTRICAL SHOCK HAZARD

 – Turn off power at the main service panel by removing 

the fuse or switching the appropriate circuit breaker to the OFF position before 
removing the existing thermostat.

1.  Turn off power to the heating and cooling system by removing the fuse or switching the appropriate 

circuit breaker off.

2.  Remove cover of old thermostat. This should expose the wires.
3.  Label the existing wires with the enclosed wire labels before removing wires.
4.  After labeling wires, remove wires from wire terminals.
5.  Remove existing thermostat base from wall.
6.  Refer to the following section for instructions on how to install this thermostat.

To Remove Existing Thermostat

Parts Diagram

Down button

Up button

RC/RH Jumper

Left switch

Reset switch

Gas/Elec

Battery 

compartment

High 

Temperature 

Protection

Freeze 

Protection

Mode switch

Fan switch

HP/Non-Heat 

Jumper

Right switch

To Install Thermostat

ELECTRICAL SHOCK HAZARD

 – Turn off power at the main service panel by removing 

the fuse or switching the appropriate circuit breaker to the OFF position before 
removing the existing thermostat.

 

IMPORTANT:

 

Thermostat installation must conform to local and national building and 
electrical codes and ordinances. 

 

Note:

 

Mount the thermostat about five feet above the floor. Do not mount the thermostat on an 
outside wall, in direct sunlight, behind a door, or in an area affected by a vent or duct.

1.  Turn off power to the heating and cooling system by removing the fuse or switching the 

appropriate circuit breaker off.

2.  To remove cover, pull gently at the seam at the top.
3.  Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through 

the wire opening in the base of the thermostat).

4.  Mark the placement of the mounting holes.
5.  Set thermostat base and cover away from working area.
6.  Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
7.  Use a hammer to tap supplied anchors in mounting holes.
8.  Align thermostat base with mounting holes and feed the control wires through slit in thermal 

intrusion barrier and into wire opening.

9.  Use supplied screws to mount thermostat base to wall.
10. Insert stripped, labeled wires in matching wire terminals. 
 

CAUTION!:

 

Be sure exposed portion of wires does not touch other wires.

11. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the 

proper terminal. 

12. Place gas/elec jumper in correct position.
 

 

gas

 = gas/oil systems     

 

elec

 = electric heat or heat pump systems

13. Remove RC/RH jumper for 2-transformer systems.
14. Non-heat pump jumper must be in Non-HP unless the system is a heat pump.
15. Insert 2 “AAA” batteries into battery holder. Orient them in the proper direction.
16. Turn on power to the system at the main service panel.
17. Configure thermostat (see Configuration Mode Settings) to match the type of system you have.
18. Replace cover on thermostat by snapping it in place.
19. Test thermostat operation as described in “Testing the Thermostat”.

Wiring Diagrams

 Common wire connection optional with batteries installed.

Hardwired

4-Wire, Single Transformer

Hardwired

3-Wire, Single Transformer

Optional

Optional

Hardwired

4 or 5-Wire, Single Transformer

Optional

Hardwired

5-Wire, Two Transformer

(Both transformers must be in phase)

IMPORTANT

: Before wiring, remove pre-installed 

RC/RH jumper.

Heating

Transformer

Cooling

Transformer

 Common wire connection optional with 

batteries installed.

Hardwired

Cool or Heat Active Reversing Valve

 Common wire connection optional with batteries 

installed.

 

Note:

 

Non-HP jumper must be installed on the 
HP pin for heat pump systems

Optional

Hardwired

4-Wire, Single Transformer

 Common  wire connection optional with 

batteries installed.

Optional

Installation, Operation & Application Guide

For more information on our complete range of American-made 
products – plus wiring diagrams, troubleshooting tips and more, 
visit us at 

www.icmcontrols.com

MP2010L

1 Heat/1 Cool

Manual Changeover

Battery or Hardwire

Managed Property Thermostat

•  Non-Programmable
•  One-Time Configurable Temperature Set Points
•  Patent-pending Abnormal Rate of Change  

(ARC) Detection Technology

•  Placebo Option
•  Single Stage Heat/Cool Systems
•  Single Stage Heat Pump Systems
•  Large Display With Backlight
•  Selectable Fahrenheit or Celsius
•  Compatible with Gas, Oil, or Electric
•  Patented Thermal Intrusion Barrier
•  Relay Outputs (minimum voltage drop in 

thermostat)

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