PG 1Install Guide CT30Caution • Your thermostat is a precise instrument, handle it with care.• Turn off electricity to the HVAC system before install

PG 10PG 11HVAC Setup on Screen IMPORTANT: Make sure the CT30 is powered up and the mode switch is set to OFF. HVAC conguration switches must be set

PG 10PG 11PG 11Test Installation Follow these procedures to verify you have correctly installed the CT30.TO CHECK FAN (If you connected the G wire

PG 12PG 13Congratulations, you have successfully installed your unit. Please proceed to the OPERATING Guide to initialize the CT30. IMPORTANT: If you

PG 12PG 13PG 13Step-by-step wiring diagrams WIRES 2 Wire Heat GAS MILLIVOLT or 24VAC systemSTEP 1 - Connect the R (or RH) wire to the RH terminal.

PG 14PG 15 W Y RH G WIRES 4 Wire Heat/Cool STEP 1 - Connect the W wire to the W terminal. This connects the heat.STEP 2 - Connect the Y wir

PG 14PG 15PG 15 4 Wire Heat Pump (heat/cool) without Auxiliary HeatSTEP 1 - Connect O wire to the O or B wire to the B terminal. This connects the c

PG 16PG 17 2 Stage Heat and 2 stage CoolSTEP 1 - Connect the W wire to the W terminal. This connects the 1st stage of HEAT.STEP 2 - Connect the W2 wi

PG 16PG 17PG 17Wire Reference Chart Possible Wires What they controlR or V or VR RH and RC Single power for HEAT and COOLRH or 4 RH Power

PG 18PG 19Lennox Heat Pump V or VR or R RH Power for HEAT M or Y Y COOL controlY or W or W2 W2 2nd stage HEATF or G G Fan control

PG 18PG 19PG 19Notes on your system

PG 2PG 3TOOLS You will need a small Phillips screwdriver and a drill with 3/16-in. (4.8mm) bit for wall mounts. LOCATION Replacement installations - m

PG 2PG 3PG 3REMOVE OLD UNIT Switch OFF electricity to the HEATING and COOLING systems. Then follow these steps:• Remove cover from old thermostat. Mo

PG 4PG 5What wires do you have? Make sure your wires are labeled. This may require you to nd the ‘other end’ connection for each wire on your heating

PG 4PG 5PG 5Find the step-by-step diagram for your • Select the referenece page with your wiring diagram and set-up information below.• The C-wire i

PG 6PG 7• “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 ter

PG 6PG 7PG 7Mount the CT30 to wall 1. Hold the CT30 against the wall, with the wires coming over the top above terminal block. The CT30 will cover t

PG 8PG 9HVAC Selection • Set the HVAC TYPE switch in the NORM position if you have conventional natural gas, propane, oil, or electric heat. If you

PG 8PG 9PG 9Caution Special Battery WarningAlways replace the batteries as soon as the “Low Batt” ashes. The thermostat is a battery powered device,