PG 1 Install Guide CT30 designed for Caution • Your thermostat is a precise instrument, handle it with care. • Turn off electricity to the HVAC system 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 the control on the furnace or air conditioner to test the system. This may damage the thermostat. • All wiring must conform to local codes and ordinances.
PG TOOLS You will need a small Phillips screwdriver and a drill with 3/16-in. (4.8mm) bit for wall mounts. LOCATION Replacement installations - mount the CT30 in place of the old thermostat. A new location will require moving your wiring. For new installations and for re-locating the CT30 - follow the guidelines listed below: • Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor, and in a room that is used often.
REMOVE OLD UNIT Switch OFF electricity to the HEATING and COOLING systems. Then follow these 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. DO NOT remove wires. Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification. Caution • Label the wires one at a time. You must label all the wires before you proceed.
PG 4 5 What wires do you have? Make sure your wires are labeled. This may require you to find the ‘other end’ connection for each wire on your heating or air conditioning equipment and read the label there. Refer to the Wire Reference page at end of install section for better understanding of wire labels from different HVAC system makers. IMPORTANT: The CT30 runs on 3 AA alkaline batteries and/or the C wire if available.
Find the step-by-step diagram for your WIRES C W RH m from Fro HVAC urnace F 2 Wire Heat Go To Page 13 C W RH G rom Ffrom HVAC Furnace RH 3 Wire Heat C W Y RH G rom Ffrom HVAC Furnace 4 Wire Heat/Cool WIRES W WIRES WIRES C C W Y RH RC G from m Fro HVAC Furnace 5 Wire Heat/Cool WIRES W RH A 3 Wire Zoned Hot Water from m Fro HVAC Furnace W C Go To A Page 16 RH O Y RH or Go To Page 15 G W Y RH 5 Wire Heat Pump w/ Aux Heat C B O W2 Y RH G W Y RH RC G Go To Page 14
From • “Fan out” wires as illustrated with CT30 below the wall opening. As in the example: fan out the wires so that the C wire is above the C terminal, the W above the W. This allows the CT30 to fit snug to the wall. Caution Do not allow wires to touch each other or parts on thermostat. C W Y RH G C B O W W2 Y Y2 RHRCG A • Wires will position behind the CT30 and up over the terminal area. • Do not bunch wires behind the CT30. Feed any slack back into the wall opening.
Mount the CT30 to wall Wall 1. Hold the CT30 against the wall, with the wires coming over the top above terminal block. The CT30 will cover the hole in the wall. CT30 2. Position CT30 for best appearance. 3. Attach the CT30 to the wall with the screws provided. 4. If you are mounting the CT30 to sheet rock or if you are using the old mounting holes, use the plastic anchors provided. 5. Mark first and drill a 3/16-in. From Furnace (4.8mm) hole for the insert at each screw location, then mount the unit.
PG NORM HP GAS ELEC RESET HVAC Selection • Set the HVAC TYPE switch in the NORM position if you have conventional natural gas, propane, oil, or electric heat. If you have a HEAT PUMP system set the HVAC TYPE switch to HP. HVAC TYPE HEAT SOURCE • Set the HEAT SOURCE switch in the GAS position if you have normal gas or oil heat or if you have a heat pump with gas or oil auxiliary heat.
Caution Special Battery Warning Always replace the batteries as soon as the “Low Batt” flashes. The thermostat is a battery powered device, you must be responsible to replace batteries before they run out. Failure to replace batteries can result in overheating or excessive cooling of your house. • Even if the “Low Batt” indicator does not flash, you should always replace the batteries at least once a year. Replacing the batteries also helps to prevent leakage that can corrode and damage the thermostat.
PG HVAC Setup on Screen IMPORTANT: Make sure the CT30 is powered up and the mode switch is set to OFF. HVAC configuration switches must be set first [pg 8]. • With mode in OFF press MENU and touch HVAC SET UP. • Use +/- icons to select HVAC SET UP number on screen. The LCD display will show your selection and indicate the number of stages you have selected. During setup, 2nd stage will blink when both heat and cool have 2nd stages. If you have a Normal HVAC system and you want fast temperature recovery...
Test Installation Follow these procedures to verify you have correctly installed the CT30. TO CHECK FAN (If you connected the G wire): Press the fan button to tur the fan ON. Verify that air is blowing from the system. Press the fan button again to return to AUTO. TO CHECK HEAT Set the mode to HEAT by pressing the MODE button until HEAT is displayed. Touch the temperature display to bring up the MANUAL screen. Touch the + icon and raise the target temp to 90 F; allow the system 2 minutes to respond.
PG 12 13 Congratulations, you have successfully installed your unit. Please proceed to the OPERATING Guide to initialize the CT30. IMPORTANT: If you have labeled and connected your wires and followed the correct HVAC setup, and your system still does not operate, contact technical support at support@radiothermostat.com or call 1-877-602-5028 8amMidnight EST.
Step-by-step wiring diagrams WIRES 2 Wire Heat GAS MILLIVOLT or 24VAC system STEP 1 - Connect the R (or RH) wire to the RH terminal. This connects the heat power. STEP 2 - Connect the W wire to the W terminal. This connects the heat. C W R RADIO POWER STEP 3 - Set HVAC selections switches to NORMAL and GAS Your heater is now connected to the 3M-30. Please Go To Page 6 C H B O W2 W Y Y2 RH RC G A WIRES 3 Wire Heat STEP 1 - Connect the R (or RH) wire to the RH terminal. This connects the heat power .
PG WIRES W Y RH G 4 Wire Heat/Cool STEP 1 - Connect the W wire to the W terminal. This connects the heat. STEP 2 - Connect the Y wire to the Y terminal. This connects the cooling compressor. STEP 3 - Connect the RH or R wire to the RH terminal. This connects the power. STEP 4 - Connect the G wire to the G terminal on the Thermostat. This connects the fan. HVAC SYSTEM STEP 5 - Set HVAC selection switches to NORMAL and: C W Y R G REMOTE POWER If you have gas or oil heat, set the HEAT TYPE switch to GAS.
4 Wire Heat Pump (heat/cool) without Auxiliary Heat STEP 1 - Connect O wire to the O or B wire to the B terminal. This connects the change-over valve. If you have both O and B - connect the O wire to the O terminal. WARNING: DO NOT connect B to B terminal (see wire reference under Trane for B wire terminal). STEP 2 - Connect the Y wire to Y terminal. This connects the compressor. HEAT PUMP SYSTEM STEP 3 - Connect the R wire to RH. This connects the power. C O B Y R G STEP 4 - Connect the G wire to the G.
PG 2 Stage Heat and 2 stage Cool STEP 1 - Connect the W wire to the W terminal. This connects the 1st stage of HEAT. STEP 2 - Connect the W2 wire to the W2 Terminal. This connects the 2nd stage of HEAT. STEP 3 - Connect the Y wire to the Y terminal. This connects the 1st stage of COOL. STEP 4 - Connect the Y2 wire to the Y2 terminal. This connects the 2nd stage of COOL. STEP 5 - Connect the RH or R wire to the RH terminal.This connects HVAC SYSTEM the power.
Wire Reference Chart Possible Wires R or V or VR RH or 4 RC W W2 W3 Y Y2 G or F C or X H DH EX B O B and O E L T What they control RH and RC Single power for HEAT and COOL RH Power for HEAT (RH not connected to RC jumper clip removed) RC Power for COOL (RH not connected to RC jumper clip removed) W Heat control W2 2nd stage HEAT or heat pump auxiliary heat W3 3rd stage HEAT or 2nd stage of 2 stage auxiliary heat Y COOL control or 1
PG Lennox Heat Pump V or VR or R M or Y Y or W or W2 F or G R or O X or X2 RH Power for HEAT Y COOL control W2 2nd stage HEAT G Fan control O C Trane Products [American Standard] B C 24VAC power (to power thermostat ) W or W1 W2 2nd stage HEAT X2 Emergency heat (do not connect, tape off) Zoned Hot Water 2 wire Your Wires R W Thermostat Terminal RH W 3 Wire Motor Driven Valves R or 5 W or 4 Y or G or 6 (the 3rd wire) Customer support: RH (power) W (heat ON
Notes on your system PG 19
