DIGITAL INSTALLATION Mount Wallplate and Thermostat What You Need • Remove the wallplate from your thermostat by pressing the release tab on the bottom of the thermostat. See Figure 2. THERMOSTAT This thermostat includes two #8 slotted screws and two wall anchors for mounting. To install your thermostat, you should have the follow- ing tools and materials. • Slotted Screwdriver(s) • Small Philips screwdriver • Hammer • Electric drill and 3/16” bit • Two 1.5 V (AA) size alkaline batteries (included) Remove Old Thermostat CAUTION: Do not remove any wiring from existing thermostat before reading the instructions carefully. Wires must be labeled prior to removal. IMPORTANT! Turn off the power to the furnace at the main power panel or at the furnace. Owners Manual Remove existing thermostat cover and thermostat. See Figure 1. Some Figure 2 Model 43054 thermostats will have screws or other locking devices that must first • Position wallplate on wall and pull existing wires through large open- be removed. Once the wall mounting plate is exposed, look for wires. ing. Then level for appearance. Mark holes for plastic anchors pro- If wires are not visible, they may be connected to the back of the Congratulations! vided, if your existing holes do not line up with those on the wallplate. wallplate. Again, look for screws, tabs, etc. Some models have doors • Drill holes with 3/16” bit and gently tap anchors into the holes until Your new Climate Technology thermostat will provide years of reliable that open to expose wires and mounting screws. See Figure 1. flush with wall. service. Using this digital thermostat will provide more uniform com- • Reposition wallplate to wall, pulling wires through large opening. fort in your home through the seasons. Thank you for buying a Cli- Typical Home Thermostats Insert mounting screws provided into wall anchor and tighten. See mate Technology product! Figure 3. Please read this manual for complete instructions on installing and operating your thermostat. If you require further assistance, call Cli- mate Technology Technical Support at 1-800-676-7861 from 8am to 5pm Central Time. IMPORTANT INFORMATION Wall Mounting Plate Thermostat Cover 1. This thermostat is designed to work on the following sys- tems: • Gas - Standing Pilot • Oil - Fired Furnace • Gas - Electronic Ignition • Single Stage Heat Pumps - with no • Gas - Fired Boilers auxiliary heat • Gas - Milivolt Systems • Electric Furnace • Oil - Fired Boilers • Electric Air Conditioning Wall Mounting Plate Thermostat Cover Figure 1 R This thermostat will NOT control multistage heat pumps or 110/220 V Rh/O baseboard electric heating systems. Wire Labeling 2. Temperature Range G • Each wire coming from the wall to the existing thermostat is con- This thermostat can be set between 45°F and 95°F (7°C and 35°C). Y nected to a terminal point on that thermostat. Each of these termi- However, it will display room temperatures from 30°F to 99°F (0°C W nal points is usually marked with a code letter as shown in Table A Rc/B and 37°C). “HI” will be displayed if the temperature is higher than below. 99°F (37°C), and “LO” will be displayed if the temperature is lower • Note that this thermostat has multiple function terminals that allow than 30°F (0°C). Single-Stage Heat Pump capability. Standard systems use: Rh, Rc, This thermostat will automatically cutoff in Heat mode if the tempera- G, Y, W. [Single-Stage Heat Pumps use: R, Y, G, and O or B.] Table A Figure 3 ture rises above 95°F (35°C), and automatically cutoff in Cool mode if below shows the multiple functions of the terminals. Use the termi- NOTE: 5-wire Systems the temperature drops below 45°F (7°C). nals that match your system. If your thermostat has one wire marked R or Rh (2, 3, or 4-wire system), 3. Compressor Protection • The number of wires in your system can be as few as two (for heat then leave the jumper wire between the Rh and Rc terminals on the This thermostat provides a 3.5 minute delay after shutting off the com- only systems), as many as eight, or any number in between. If you wallplate. Otherwise, if you have separate Rh and Rc wires (5-wire pressor before it can be restarted. This feature will prevent damage to follow the labeling procedures correctly, you do not have to be con- system), then remove the jumper wire between the Rh and Rc termi- your compressor caused by rapid cycling. It does not prevent a rapid cerned about how many wires there are. nals. compressor restart due to short power outages. • There is often no terminal marking on the existing thermostat of 4. Battery Warning two wire, heat only systems. Just connect either of the wires to the Connect Wires and Mount Thermostat to Wallplate Two fresh AA alkaline batteries should provide well over one year of RH terminal, then connect the other wire to the W terminal to com- • Match and connect the labeled wires to the appropriate coded ter- service. However, when the batteries become drained, the Low Bat- plete the circuit. minal screws on the wallplate. (See Figure 4, 5.) Ignore any wires tery Indicator will flash on the display. When this message occurs, • IMPORTANT! BEFORE DISCONNECTING ANY WIRES, APPLY THE SELF- which may be present, but which were not connected to the old install new alkaline batteries. You have approximately 1 minute to ADHESIVE LABELS PROVIDED TO THE WIRE AS SHOWN IN TABLE A thermostat. change the batteries and keep the thermostat’s settings. Once the BELOW. (For example, attach the label marked W to the wire that batteries have become too low to ensure proper operation, your sys- goes to the W or H terminal on your existing thermostat.) IGNORE tem will be turned Off, and the display will be cleared except for flash- THE COLOR OF THE WIRES since these do not always comply with ing Low Battery Indicator on the LCD display. the standard. • After labeling wires, disconnect them from the existing thermostat CAUTION: When only the battery icon flashes on the display, terminals. the thermostat is shut down, and your system will no longer operate. In this condition, there is no temperature control of • Remove existing wallplate. To make sure wires do not fall back into your dwelling. wall opening, you may want to tape them to the wall. • If hole in wall is larger than necessary for wires, seal this hole with NOTE: The INDIGLO® night-light will not function when the thermo- insulating material so that no hot or cold air can enter the back of stat is in low battery condition. the thermostat from the wall. This air could cause a false thermo- NOTE: If you plan to be away from the premises over 30 days, we stat reading. recommend that you replace the old batteries with new alkaline bat- Table A teries prior to leaving. If the code letter on then mark the and connect to FEATURES your existing wire with thermostat terminal Figure 4 Figure 5 thermostat is label shown shown • Refer to the Wiring Diagrams below to be sure your system is wired INDIGLO® night- RH, R, VR or 4 light: Backlights 24 Volt correctly. display - or - • If your system is a single stage heat pump and uses an O or B wire, automatically Front Doors: B with each key Reversing Valve operating in Heat mode. you must move the System Selector switch inside the thermostat to Filter Change Covers keys press for easy and batteries (Single Stage Heat Pumps ONLY.) the Heat Pump position. If you have a normal furnace or electric Indicator: Flashes viewing. when filter needs LCD Display: when not used RC, VC system, leave the switch in the Standard position. Refer to the Sys- to be checked. Shows Room for neat 24 Volt Cool Temperature, Set appearance. - or - tem Selector section on the back for more information on this switch. Temperature, and Open with one O Reset: Press with a Low Battery • Be sure to tighten the terminal screws securely, otherwise a loose other feature finger from top Reversing Valve operating in Cool mode. paper clip to reset the Indicator: wire could cause operational problems with your system or thermo- information as Flashes when or bottom. (Single Stage Heat Pumps ONLY.) thermostat and return required. to power-up settings. batteries need stat. to be replaced. G or F • Push excess wire back into the hole to prevent interference when Fan installing the thermostat to the wallplate. Y, Y1, C or M • Make sure the System Switch is set to OFF, and the Fan Switch is set Air Conditioning Compressor to AUTO. - or - Single Stage Heat Pump • Insert the tabs on top of the thermostat body into the slots at the Compressor top of the wallplate. Press the bottom of the thermostat body into the snap on the bottom of the wallplate. Refer to Figure 2. (NOTE: W or H Heating Do not force the thermostat onto the wallplate, as the terminal pins may be damaged. If it does not snap properly, the thermostat may not work.) R 24 Volt • Insert the two AA size alkaline batteries, observing the polarity (Single Stage Heat Pumps ONLY.) marked inside the battery compartment. • Switch on the main power at the panel or furnace. NOTE: Do not connect a “Common” wire (sometimes labeled “C”) to System any terminal on this thermostat. Tape up the wire and do not use. This Switch: Battery Fan Switch: wire provides electricity to non-battery powered thermostats. Selector Up and Down Keys: Compartment: switch for Fan switch for Filter Key: Keys for changing Front access allows Automatic or Resets the Heat, Cool, the Temperature easy insertion of Continuous filter and Off.