Smart Temp |
7-Day Auto Changeover |
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72
Owner’s Manual |
Model 43503 |
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Table of Contents |
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4-5 |
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INTRODUCTION |
Read This Before Installing Thermostat |
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Features |
8 |
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INSTALLATION |
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What You Need |
10 |
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Remove Old Thermostat |
10 |
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Wire Labeling |
11 |
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Mount Wallplate and Thermostat |
12 |
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Selector Switches |
14 |
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PROGRAMMING |
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Setting Time and Day |
16 |
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Auto Programming |
17 |
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Personal Program Schedule |
18 |
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Manual Programming |
19 |
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Weekday / Weekend Programming |
19 |
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7-Day Programming |
21 |
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Reviewing Programs |
22 |
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Reviewing the Current Temperature Setting |
23 |
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OPERATIONS |
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System Selector Switch |
24 |
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Fan Switch |
24 |
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(continued) |
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Table of Contents (continued)
OPERATIONS (continued) |
Temporary Manual Override |
24 |
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Permanent Manual (Vacation) Override |
25 |
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Auto Season Changeover |
26 |
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Home Today |
26 |
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Energy Monitor |
28 |
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Filter Monitor |
29 |
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Auto Recovery |
30 |
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Keyboard Lock |
31 |
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Backlighting |
31 |
SAFETY FEATURES |
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Low Battery Warning |
32 |
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Error Mode |
33 |
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Auto Cut-Off |
33 |
TROUBLESHOOTING |
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Problems & Solutions |
34 |
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Technical Support |
35 |
WIRING DIAGRAMS |
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Heat / Cool Systems |
36 |
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Single-Stage Heat Pump Systems |
37 |
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Heat Only / Cool Only Systems |
38 |
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Read This Before Installing Thermostat |
6-7 |
IMPORTANT
1Read the entire installation section of this Owner’s Manual thoroughly before you begin to install or
operate your CTC Thermostat.
INSTALLATION
2All installation is normally performed at your thermostat.
ARMCHAIR PROGRAMMING
3You can program your thermostat before installation by inserting the batteries and following the instructions
starting on page 16. This can be done while you relax in your favorite chair and is a very good way to familiarize yourself with all the functions of your CTC Thermostat.
Note: At initial power-up this thermostat is programmed at 68°F (20°C) for Heat and 78°F (26°C) for Cool. Any change to the set temperature will be treated as a Permanent Manual Override. See page 25 for more information. Press Auto Program to load the built-in energy saving programs.
OPERATION
4Your Thermostat is designed to operate with most gas, oil, electric or 2-wire hot water heating and air
conditioning systems. It will also operate single-stage heat pumps that do not have auxiliary or emergency heat. These have 24-volt or millivolt control systems and
represent most central heating, air conditioning, or space heating units in use in the United States.
This CTC Thermostat will NOT control multi-stage heat pumps or 220 Volt systems (Optional SmartPak Interface Available)
COMPRESSOR PROTECTION
5The thermostat provides a 3.5 minute delay after shutting off the heating or cooling system before it can
be restarted. This feature will prevent damage to your compressor caused by rapid cycling. Note that this delay also applies to the heating system control. It does not provide a delay when there are power outages.
TEMPERATURE RANGE
6Your thermostat can be programmed between 40°F and 95°F (4°C and 35°C). However, it will display room
temperatures from 32°F to 99°F (0°C and 37°C). “HI” will be displayed if the temperature is higher than 99°F (37°C), and “LO” will be displayed if the temperature is lower than 32°F (0°C).
NOTE: The thermostat will automatically change to the Cool mode if the thermostat measures a temperature over 99°F (37°C). “Hi” will be displayed on the LCD, and the Cooling system will turn On. Similarly, the thermostat will automatically change to the Heat mode if the temperature is below 32°F (0°C). “LO” will be displayed on the LCD, and the Heating system will turn On.
Read This Before Installing Thermostat (continued)
POWER FAILURE
7Whenever the main power is interrupted or fails, the battery power retains the programs and current time.
AUTO RECOVERY
8Your thermostat is set from the factory to gradually recover the room temperature from an energy saving program to
your comfort program. Therefore, the thermostat may turn your system on several minutes prior to your programmed time. This operation is normal, but can be turned off. Refer to the Selector Switches information on pages 14-15.
BATTERY WARNING
9Fresh alkaline batteries should provide over one year of service. However, when the batteries become drained,
“BATT” will alternate on the display with the current time. When this message occurs, install 2 new AA batteries. You
have approximately 1 minute to change the batteries and keep thermostat’s clock and program settings. Once the batteries have become too low to ensure proper operation, your system will be turned Off, and the display will be cleared except for “BATT” flashing on the LCD display.
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CAUTION: Once the “BATT” only display occurs, the thermostat is shut down, and your system will no longer operate. In this condition, there is no temperature control of your dwelling.
NOTE: The INDIGLO® night-light will not function when the thermostat is in low battery condition.
NOTE: If you plan to be away from the premises over 30 days, we recommend that you replace the old batteries with new alkaline batteries prior to leaving.
Features |
8-9 |
Light Bar: Activates INDIGLO® night-light to allow display viewing in the dark.
ENERGY: Measures and displays heating and
cooling system operating time for Today, Yesterday, This Week, Last Week, or Total. By monitoring your energy usage, you can program the thermostat to optimize energy savings.
System Switch: System selector switch for Cool, Off, Heat or Auto.
Fan Switch: Fan switch for
Automatic or Continuous
On fan operation.
HOME TODAY: Overrides energysaving program temperatures while you are at home for the day.
Alpha-numeric display shows time, day, temperature, program number, and other feature information as required.
Temperature Keys: Keys for raising or lowering temperature settings.
HOME |
M |
T W Th F Sa Su |
SET TEMP |
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TODAY |
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AM |
C |
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PM |
H |
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1 |
2 3 4 |
°C |
ENERGY |
AUTO COOLHEAT TEMP |
M |
Usage TodayYesterday This Week Last WeekTotal
COOL OFF HEAT AUTO
FAN ON AUTO
Battery Door: Frontaccess battery door allows easy battery changes.
Soft-touch programming keypad, see details below.
For entering minute of day.
For entering hour of day.
Enters Program Mode for reviewing and changing weekday, weekend, or daily programs.
Selects the day or days to review or change in Program Mode.
HOUR
PROG
PROG
DAY
Automatically programs the thermostat to its
built-in ENERGY
STAR® compliant program settings. See page 17.
For entering day of week.
Reviews filter usage in MIN DAY hours and minutes. Also
resets filter counter to zero.
AUTO
PROGRAM FILTER
HOLD |
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Returns display to |
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RETURN |
current time and |
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CLEAR |
temperature. |
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Provides permanent temperature setting by overriding stored programs. It also returns the thermostat to current program control from manual override or Home Today mode.
As an ENERGY STAR® Partner, Climate Technology Corp. has determined that this programmable thermostat meets the ENERGY STAR® guidelines for energy efficiency.
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INSTALLATION |
10-11 |
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What You Need |
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This thermostat includes two #8 slotted screws and two wall |
■ Slotted Screwdriver(s) |
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anchors for mounting. To install your thermostat, you should have |
■ Phillips Screwdriver |
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the following tools and materials. |
■ Hammer |
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■ Electric drill and 3/16" bit |
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■ Two 1.5 V (AA) size alkaline batteries |
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Remove Old Thermostat |
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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.
■Remove existing thermostat cover. See Figure 1. Some thermostats will have screws or other locking devices that must first be removed. Once wall mounting plate is exposed,
look for wires.
If wires are not visible, they may be connected to the back of the wallplate. Again, look for screws, tabs, etc. Some models have doors that open to expose wires and mounting screws. (See Figure 1).
TYPICAL HOME THERMOSTATS
Wall Mounting Plate |
Thermostat |
Cover |
Wall Mounting Plate |
Thermostat |
Cover |
Wire Labeling
■Each wire coming from the wall to the existing thermostat is connected to a terminal point on that thermostat. Each of these terminal points is usually marked with a code letter as shown in Table A on this page.
■The number of wires in your system can be as few as two (for heat only systems), as many as eight, or any number in between. If you follow the labeling procedures correctly, you do not have to be concerned about how many wires there are.
■There is often no terminal marking on the existing thermostat of two wire, heat only systems. Just connect either of the wires to the RH terminal, then connect the other wire to the W terminal to complete the circuit.
■IMPORTANT! BEFORE DISCONNECTING ANY WIRES, APPLY THE SELF-ADHESIVE LABELS PROVIDED TO THE WIRE AS SHOWN IN TABLE A ON THIS PAGE. (For example, attach the label marked W to the wire which goes to the W or H terminal on
your existing thermostat.) IGNORE THE |
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COLOR OF THE WIRES since these do |
G |
Y |
not always comply with the standard. |
W |
RH |
■ After labeling wires, disconnect them from |
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RC |
the existing thermostat terminals. |
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If the code letter on your |
then mark the wire |
and connect to thermostat |
existing thermostat is |
with label shown |
terminal shown |
RH, R, |
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RH |
VR or 4 |
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24 Volt |
RH |
RH |
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RC, VC |
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RC |
24 Volt Cool |
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RC |
RC |
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G or F |
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G |
Fan |
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G |
G |
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Y, Y1, C or M (See Note) Air Conditioning Compressor
W or H Heating
Not for heat pumps
Y/Y1
W
Y/Y1
Y/Y1
W
W
O, B, or R Reversing Valve (Single-stage Heat Pumps only)
O/B
O/B
O/B
Table A
NOTE: Do not connect a “Common” wire (sometimes labeled “C”) to any terminal on this thermostat. Tape up the wire and do not use. This wire provides electricity to non-battery powered thermostats.
INSTALLATION |
12-13 |
Mount Wallplate and Thermostat
■Remove the wallplate from your thermostat by pressing the release tab on the bottom of the thermostat. (See Figure 2.)
■Position wallplate on wall and pull existing wires through large opening. Then level for appearance. Mark holes for plastic anchors provided if your existing holes do not line up with those on the CTC wallplate.
■Drill holes with 3/16” bit and gently tap anchors into the holes until flush with wall.
■Reposition wallplate to wall, pulling wires through large opening. Insert mounting screws provided into wall anchor and tighten. (See Figure 3.)
OB
RC
G
Y/Y1
W
RH
Figure 2 |
Figure 3 |
NOTE: 5-wire Systems
If your thermostat has one wire marked R or RH (4-wire system), then leave the jumper wire between the RH and RC terminals on the wallplate.
Otherwise, if you have separate RH and RC wires (5-wire system), then remove the jumper wire between the RH and RC terminals.
Connect Wires and Mount Thermostat Cover to Wall Plate
■Match and connect the labeled wires to the appropriate coded terminal screws on the mounting plate. (See Figure 4, 5.) Ignore any wires which may be present, but which were not connected to the old thermostat.
■Be sure to tighten the terminal screws securely, otherwise a loose wire could cause operational problems with your system or thermostat.
■Push excess wire back into hole to prevent interference with mounting of the thermostat cover.
■Make sure the System Switch is set to OFF, and the FAN-AUTO Switch is in AUTO.
■If your system has an O or B wire, you must move the Heat Pump selector switch to the appropriate position. Refer to the next page for more information.
RH
RH
FIGURE 4
■Insert the bottom tab on the thermostat body into the slot at the bottom of the wallplate. Press top of the thermostat body to snap it into the wallplate. (NOTE:
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.)
■Insert the two AA size alkaline batteries, observing the polarity marked on the unit.
■Switch on the main power at the panel or furnace.
W RH RC G Y/Y1 O/B x + x + x +
FIGURE 5