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Lennox International Inc. 43558 - page 1
1 Owner’ s Manual Model 43558 Pr ogr ammable Heat Pump or Multi-Stage Auto Season Thermostat 41653_model43558.pmd ...
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Lennox International Inc. 43558 - page 2
2 2 Introduction CONGRA TULA TIONS! Y our new Climate T echnology electronic thermostat will provide years of reliable service. By saving energy , your thermostat will pay for itself during its first season of use. Thank you for buying a Climate T echnology product! Please read this manual for complete instructions on installing and operating your ...
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Lennox International Inc. 43558 - page 3
4 4 T able of Contents (continued) Program Options 33 Programmable F an 33 2 or 4 Programs Per Day 33 Reviewing Programs 34-35 P ower Switch 36 System Selection K ey 36 F an Key 37 System Indicator Light 37-38 Emergency Heat 38 Reviewing the Current T emperature Setting 39 T emporary Manual Override 40 P ermanent Manual Override 41 V acation (Progr ...
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Lennox International Inc. 43558 - page 4
6 6 Read This Before Installing Thermostat IMPORT ANT 1 Read the entire installation section of this Owner’ s Manual thoroughly before you begin to install or operate your Cli- mate T echnology Thermostat. INST ALLA TION 2 All installation is normally performed at your thermostat. ARMCHAIR PROGRAMMING 3 Y ou can program your thermostat before ins ...
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Lennox International Inc. 43558 - page 5
8 8 Features INDIGLO ® Night-Light activated by pressing any k ey . Energy Monitor: Measures and displays heating and cooling system operating time for T oday, Y esterday , This Month, Last Month, or T otal. By monitoring your energy usage, you can program the thermostat to optimize energy savings. Home T oday: Overrides energy-saving program temp ...
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Lennox International Inc. 43558 - page 6
10 10 INST ALLA TION What Y ou Need T his thermostat includes two #8 slotted screws and two w all an- chors for mounting. T o install your thermostat, you should have the following tools and materials . ■ Slotted Screwdriver(s) ■ Electric drill and 3/16" bit ■ Phillips Screwdriver ■ T wo 1.5 V (AA) size alkaline batteries ■ Hammer Se ...
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Lennox International Inc. 43558 - page 7
12 12 INST ALLA TION CAUTION: Do not remove any wiring from existing ther- mostat before reading the instructions carefully. WIRES MUST BE LABELED PRIOR TO REMOVAL. ■ IMPOR TANT! T urn off the power to the furnace at the main power panel or at the furnace. ■ Remove existing thermostat cover . See Figure 1. Some ther- mostats will have screws or ...
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Lennox International Inc. 43558 - page 8
14 14 INST ALLA TION TABLE A – TERMINAL DESCRIPTIONS (continued) TERMINAL FUNCTION FUNCTION LABELS (HEA T PUMP MODE) (MUL TI-ST AGE MODE) COMMENTS E Emergency heating DO NOT CONNECT Activates Emergency heating ONL Y when the System Switch is in Emergency (em) Mode. (Ignored on Multi-stage systems) O Reversing valve Cooling damper Activates revers ...
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Lennox International Inc. 43558 - page 9
16 16 INST ALLA TION Mount W allplate and Thermostat ■ Remove the wallplate from your thermostat by pressing the release tab on the bottom of the thermostat. (See Figure 2.) ■ P osition w allplate on wall and pull existing wires through large opening. Then level for appearance . Mark holes for plas- tic anchors provided if your existing holes d ...
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Lennox International Inc. 43558 - page 10
18 18 PROGRAMMING Option Menu Y our thermostat has many settings that can be adjusted to fit your system and preferences . ■ Press to enter the Option Menu and to change to the next option selection. ■ Press at any time to return to normal mode . Local temperature sensor weighting ■ or to change weighting between FULL, HALF or OFF . Remote te ...
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Lennox International Inc. 43558 - page 11
20 20 PROGRAMMING Option Menu (continued) Stage 1 SP AN selection ■ or to change the SPAN setting to 1, 2, or 3. The factory setting is 2. Setting 1 will cause shorter cycle times . Setting 3 will cause longer cycle times . Stage 2 SP AN selection ■ or to change the SP AN setting to 1, 2, 3, 4, 5 or 6. T he factory setting is 2. Lower settings ...
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Lennox International Inc. 43558 - page 12
22 22 PROGRAMMING Setting Time and Day ■ T he LCD will show this information when batteries are first installed, or after the Reset button is pressed. The temperature will update after a few seconds . ■ During time and day setting mode, the temperature and program displays will go blank. ■ Example: Set the Thermostat to the current time of 2: ...
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Lennox International Inc. 43558 - page 13
24 24 PROGRAMMING Programming Intr oduction Studies conducted by the Department of Energy estimate that setting your thermostat back 10 ° F (6 ° C) for two 8-hour periods during winter can reduce your fuel bill by as much as 33%. By setting your thermostat up 5 ° F (3 ° C) for two 8-hour periods dur - ing summer you can reduce your fuel bill up ...
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Lennox International Inc. 43558 - page 14
26 26 PROGRAMMING Programming ■ Y our thermostat can be programmed for weekdays and week- ends, have unique programs for all 7 days, or the same pro- gram for everyday . Use Weekday/Week end Programming be- low , 7-day Programming on page 29, or Everyday Program- ming on page 31 to enter or revise programs to match your P ersonal Program Schedule ...
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Lennox International Inc. 43558 - page 15
28 28 PROGRAMMING Step 5 ■ Press again to change to the program temperature . The current temperature will be flashing. ■ Press to change the temperature . Step 6 ■ Press again to move to the next program number . ■ Repeat Steps 3 through 5 to change the remaining Weekday programs . Step 7 ■ Press to change to Weekend programs . ■ Repea ...
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Lennox International Inc. 43558 - page 16
30 30 PROGRAMMING Step 5 ■ Press again to change to the program temperature. T he current temperature will be flashing. ■ Press to change the temperature . Step 6 ■ Press to move to programs 2, 3 and 4. ■ Repeat Steps 3 through 5 to complete the programs for Monday . Step 7 ■ Press to change to the next day’s programs . ■ Repeat Steps ...
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Lennox International Inc. 43558 - page 17
32 32 PROGRAMMING Step 5 ■ Press again to change to the program temperature. T he current tem- perature will be flashing. ■ Press to change the temperature . Step 6 ■ Press again to move the next program number . ■ Repeat Steps 3 through 5 to change the remaining programs . ■ Press at any time to exit the Program Mode . ■ After 15 secon ...
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Lennox International Inc. 43558 - page 18
34 34 PROGRAMMING Reviewing Programs Y ou may want to review the programs to confirm that the settings are compatible with your lifestyle . ■ Press to display M - F programs . ■ Press repeatedly to cycle through the 4 programs . ■ Press to display the Sa - Su programs . ■ Press repeatedly to cycle through the 4 programs . ■ Press to displ ...
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Lennox International Inc. 43558 - page 19
36 36 OPERA TION Power Switch T he P ower switch on the front of the thermostat determines the operating mode of the thermostat. Y ou may select ON, OFF or Emergency Heat (EM). When the Power Switch is OFF , all outputs are posi- tively disconnected from the system. NO TE: Anytime you install or remove the thermostat from the wallplate, slide the P ...
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Lennox International Inc. 43558 - page 20
38 38 OPERA TION Stage 1 Light T his LED will turn on in GREEN when the first stage of heat or cool is activ ated. When in Emergency Heat mode , this LED will turn on in RED when the first stage of emergency heat is activated. Stage 2 Light T his LED will turn ON in YELLOW when the second stage of heat, emergency heat or cool is activated. T he Sta ...
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Lennox International Inc. 43558 - page 21
40 40 OPERA TION T emporary Manual Override To temporarily change the current set temperature without affecting your progr am: ■ Press or and hold for about 1 second to enter Manual Override mode . Display will flash. ■ Press or to change to your desired new temperature. ■ Press to return to normal mode , or w ait 5 seconds for it to return a ...
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Lennox International Inc. 43558 - page 22
42 42 OPERA TION V acation (Programmable) Hold T his thermostat can hold a fixed temperature for a selected number of days (up to 30). After the selected number of days, the thermo- stat will return to normal program operation. This feature allows you to return home to your normal comfort setpoint temperatur es . ■ Press and hold for 2 seconds to ...
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Lennox International Inc. 43558 - page 23
44 44 OPERA TION Home T oday T his Climate T echnology patented feature allows you to quickly and temporarily override your energy saving program setting on days when you are normally away from home with one k ey press. ■ Press to enter the Home T oday override. T he highest program tempera- ture for today will be selected from your programs in H ...
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Lennox International Inc. 43558 - page 24
46 46 OPERA TION ■ To review energy usage, press to cycle through T oday , Y esterday , [num- ber] Days , Last 30 days , and T otal. Press again to return to normal mode , or wait 15 seconds for the display to return to normal mode . Y ou can also return to normal mode at any time by pressing RET CLEAR. ■ F or example: This LCD display shows T ...
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Lennox International Inc. 43558 - page 25
48 48 OPERA TION SP AN Settings ST AGE 1 Y our thermostat is set at the factory to cycle at 1 ° F (0.5 ° C) above and below the set temperature in Stage 1. (Span = 2.) T his setting has been designed to provide a comfortable room tem- perature under most all conditions . However , if you find your sys- tem cycling too fast or too slow , then the ...
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Lennox International Inc. 43558 - page 26
50 50 OPERA TION ■ Auto Recovery will be canceled if HOME T ODA Y or HOLD is pressed during the recovery process . The thermostat will enter Home T oday , Permanent hold or V acation hold. ■ Auto Recovery will be canceled and change to T emporary Manual Override mode if the setpoint is adjusted during the recovery process . Auto Recovery (conti ...
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Lennox International Inc. 43558 - page 27
52 52 OPERA TION Notes on sensor calculations: ■ If the sensor reading exceeds temperature limits (“HI” or “LO”) then the maximum or minimum value will be used in the calculation. ■ If all 3 sensors are set to OFF , the Local sensor will automatically be set to FULL. ■ If there is a problem with the installed remote sensors , then the ...
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Lennox International Inc. 43558 - page 28
54 54 SAFETY FEA TURES AC Power Monitor ■ This thermostat operates on 24V AC, which is provided by your system’s transformer . If the system loses electricity , then the 24V AC power is lost also . ■ T he 2 AAA batteries provide backup operation of the clock, as well as all programs and settings . ■ If the AC power is lost, then the LCD dis ...
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Lennox International Inc. 43558 - page 29
56 56 TROUBLESHOOTING SCRAMBLED OR DOUBLE DISPLA Y (numbers over numbers) NO DISPLA Y ENTIRE DISPLA Y DIMS PROGRAM DOES NO T CHANGE AT Y OUR DESIRED SETTING AU TO / F AN DOES NOT TURN ON F AN RUNS CONTINUOUSL Y 1. Remove clear Mylar stick er 1. Check terminal connection. A common (C) wire is required for operation. 2. Check battery connections and ...
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Lennox International Inc. 43558 - page 30
58 58 WIRING DIAGRAMS HEA T PUMP SYSTEMS X - No Connection NO TE: Common wire connection is REQUIRED. X Optional Jumper* THERMOST A T WALLPLA TE TERMINALS Y2 G C L O W2 E R Y1 B Fan Relay W1 Compressor Stage 2 System Monitor Reversing Valve Cool Auxiliary Heat Emergency Heat 24V Supply Compressor Stage 1 Reversing Valve Heat Common Some terminals m ...
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Lennox International Inc. 43558 - page 31
60 © 2004, Climate T echnology Corp Form No . 41653-01, 01/27/04 Climate T echnology Corp. 2500 FRISCO A VENUE MEMPHIS , TN 38114 A Hunter Fan company 41653_model43558.pmd ...
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