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Install guide 3M-22
Caution
• Your thermostat is a precise instrument, handle it with care.
• Turn off electricity to the appliance before installing or
servicing thermostat or any part of the system.
• Do not turn electricity back on until work is completed.
• Do not short (jumper) across electric terminals at control on
furnace or air conditioner to test the system. This will damage
the thermostat and void your warranty.
• All wiring must conform to local codes and ordinances.
• This therm
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Install guide 3M-22 To avoid electrical shock and to prevent damage to the furnace, air conditioner, and thermostat, disconnect the power supply before beginning work. Caution This can be done at the circuit breaker, or at the appliance. You will need a small Phillips screwdriver and possibly a drill Tools with 3/16-in. (4.8mm) bit for wall mounting. Location Replacement installations - mount the new thermostat in place of the old one. New installations - follow the guidelines listed belo
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Remove old unit IMPORTANT : LABEL ALL WIRES BEFORE DISCONNECTING THEM! • Switch electricity to the furnace and air conditioner OFF; then proceed with the following steps. • Remove cover from old thermostat. Most are snap-on types and simply pull off. Some have locking screws on the side or front. These must be loosened. Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification. Read instructions carefully before removing any wiring from e
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PG 5 Before you Connect Wires Please follow these guidelines for safe and secure wire connections. • Easy Terminals do not require stripping the wire. • Clip any bare wire from previous installation. • Take care not to damage the labels for each wire in handling. • Fan wires out as illustrated with 3M-22 below the wall opening. • Wires will dress behind the 3M-22 and up over the terminal area. • Use the Step-By-Step diagram as your guide. • Do not bunch wires behind 3M-22. Feed slack back into
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PG 7 Find the set-up diagram for your system • Find the referenece page with your wiring C W RH Go To Page 15 diagram and jumper set-up information. 2 Wire Remember, the C wire is optional. Heat C W RH G C W Y RH G C W Y RH RC G 3 Wire 4 Wire 5 Wire Heat Heat/Cool Heat/Cool W RH A 3 Wire Zoned W W W Hot Water Go To Go To Page 16 Go To Page 17 Go To Page 18 PAGE 22 C B or O Y RH G C B or O W2 Y RH G C W2 W Y Y2 RH G 5 Wire 4 Wire Heat Pump 2 stage Cool Heat Pump w/o Aux Heat 2
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Mount the 3M-22 Wall • Hold the 3M-22 against the wall, with the wires coming 3M-22 over the top above terminal block. The 3M-22 will cover the hole in the wall. • Position 3M-22 for best appearance. Use the optional stand- offs if more space for wires is needed behind the 3M-22. Wires • Attach the base to the wall with the screws provided. • If you are mounting the base to sheet rock or if you are using the old mounting holes, use the plastic anchors provided. Drill a 3/16-in.(4.8mm) hole
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PG 11 Check Unit Temperature Follow these procedures to verify you Display TEMP Mode have correctly installed the 3M-22. UP button Switch To check Fan: (If you connected the G wire - fan relay) • Switch the FAN switch to the ON position. Verify that air is blowing from the system. Return to AUTO position for normal operation. Fan To check HEAT mode: Switch Set the mode switch to HEAT. TEMP DOWN button Set the fan switch to AUTO. • Using the TEMP + button raise the Target Temp to 9
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PG 13 Power Options BATTERIES ONLY - This thermostat can run on batteries only using 2AAA alkaline batteries. The batteries will last at least 1 year; replace the batteries once a year or when the low battery icon comes on the display. If the batteries are not replaced, the thermostat will shut off the HVAC and then stop working. 24VAC - This thermostat can run on the HVAC 24VAC (C wire) if available. As shown in the wiring diagrams, the C wire is the other side of the 24VAC heating transfor
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2 WIRE HEAT Heating GAS MILLIVOLT or 24vac PG 15 STEP 1 - Connect the R (or RH) wire to the RH terminal on the 3M-22. This connects the Heater Power to the thermostat. 4 5 STEP 2 - Connect the W wire to the W on the 3M-22. 6 7 1 2 3 This connects the heater control line to the 3M-22. 8 SET JUMPERS STEP 3 - Set Config jumpers per this diagram. GAS Milivolt Heat Your Heater is now connected to the 3M-22. C W R OPTIONAL POWER Please Go To Page 9 3M-22 NOTE: Wires marked with dotted line are
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W Y RH G 4 Wire Heat/Cool PG 17 STEP 1 - Connect the W wire to the W terminal on the SET JUMPERS thermostat. This connects to the heater control line. 4 5 or STEP 2 - Connect the Y wire to the Y terminal on the 6 7 1 2 3 3M-22. This connects to the Cooler compressor. 8 STEP 3 - Connect the RH or R wire to the RH terminal on the thermostat. This connects the Heater/Cooler Power. STEP 4 - Connect the G wire to the G terminal on the Thermostat. This connects to the Fan. HVAC SYSTEM STEP 5
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B or O Y R G PG 19 4 Wire Heat Pump w/o Aux STEP 1 - Connect O wire to the O terminal or B wire to the B terminal on the 3M-22. (If you have both O and B - connect O wire to O terminal DO NOT connect B to B terminal - see pg 24 Trane for B wire terminal) This connects the change-over valve. SET JUMPERS STEP 2 - Connect the Y wire to Y on the 3M-22. 4 5 This connects the Compressor. 6 7 STEP 3 - Connect the R wire to RH on the 3M-22. 1 2 3 8 This connects to the 24vac power. STEP 4 - C
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W2 W Y Y2 RH RC G 2 Stage Heat and Cool PG 21 STEP 1 - Connect the W wire to the W terminal and W2 to W2 on the 3M-22. This connects 2 stages of heat. STEP 2 - Connect the Y wire to the Y terminal and Y2 wire to Y2 on the 3M-22. This connects 2 stages of cool. SET JUMPERS STEP 3 - Connect the RH or R wire to the RH terminal on 4 5 or the thermostat. This connects the Heater/Cooler Power. 6 7 1 2 3 STEP 4 - Connect the G wire to the G terminal on the 8 Thermostat. This connects to the Fa
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3M-22 Features PG 23 This thermostat can be used with all millivolt and 24VAC heating and cooling systems. It cannot be used with line voltage systems. This thermostat is digital and your desired heat or cool temperatures can easily be set on the large screen with the +/- buttons on the front. A minimum 4 minute off time protects heating and cooling systems from damage. This thermostat uses a new technique called sequential staging for more comfort with faster reaction to request
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PG 25 Wire Reference cont Zoned Systems Your Wires Filtrete Terminal Your Wires Filtrete Terminal 2 wire Zoned Hot Water R RH Lennox Heat Pump W W V or VR or R RH M or Y Y 3 Wire Zoned Hot Water Y or W or W2 W2 Motor Driven Valves F or G G R RH R or O O W W X or X2 or C C Y (the 3rd wire) A Trane Products [American Standard] 3 Wire Zoned Hot Water B C Solenoid Valves W or W1 W2 R RH W A Y (the 3rd wire) W PG 26 RESET UNIT Jump
