User manual HONEYWELL CT2800
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Manual abstract: user guide HONEYWELL CT2800
Detailed instructions for use are in the User's Guide.
[. . . ] If you have questions, call Honeywell Customer Response Center at 1-800468-1502.
MERCURY SWITCH
MERCURY NOTICE
Typical location of a mercury switch in a thermostat.
M3701
2
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Contents
Step 1. Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove Old Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Four time periods are available during weekdays -- WAKE, LEAVE, RETURN, and SLEEP; view these periods individually on the display as you press the Weekday key.
· WAKE is the time period you want the house at a comfortable temperature when you get up and while you get ready for work or school. (This is a higher temperature during heating season and a lower temperature during cooling season. ) · LEAVE is the time period you can set for an energy-saving temperature while you are away at work or school. (This is a lower temperature during heating season and a higher temperature during cooling season. ) · RETURN is the time period you want the house at a comfortable temperature for activities before bedtime. (This is a higher temperature during heating season and a lower temperature during cooling season. ) · SLEEP is the time period you can set for an energy-saving temperature while you are sleeping. (This is a lower temperature during the heating season and a higher temperature during the cooling season. )
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Set one schedule for weekdays and another for weekends because your requirements are usually different for each. Also, during weekends, only the WAKE and SLEEP time periods are available. Fill in the times and temperatures you desire for weekdays and weekends. If you decide not to program the thermostat, it automatically controls heating at 68°F (20°C), and cooling at 78°F (26°C), 24 hours a day. Also, you do not need to enter a time and temperature program for all periods if your schedule does not require it. For example, a house that is occupied during weekdays would require programs only for WAKE and SLEEP.
If no program is entered for the weekends, the thermostat operates on the weekday SLEEP program all weekend. Before programming, remove the clear plastic overlay covering the display. (See wiring diagrams. ) Hold the thermostat as shown in illustration to minimize need for wire extenders. If wires are still too short, use wire connectors (purchased locally) to extend wires. See illustration for guidelines on using wire extenders.
METHOD TO INCREASE WIRE LENGTH WIRE NUT SIZE FOR TWO 18-GAUGE WIRES
WIRE FROM WALL
6 IN. MATCH INSULATION COLORS OR MARK WIRE ENDS.
M1715A
In 5-wire installations only, be sure to remove the factory-installed jumper connecting terminals R and Rc.
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Loosen the terminal screws and slip each wire beneath its matching terminal. Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation.
INSERT STRAIGHT UNDER SCREW HEAD JUMPER (FACTORYINSTALLED). REMOVE IF 5-WIRE SYSTEM
R
M1712B
M3002A
24
W
Y
G
END OF WIRE VISIBLE HERE
Rc
5/16 in. (8 mm) STRIP
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2-WIRE HEAT-ONLY (JUMPER INTACT)
A C
4-WIRE HEAT/COOL (JUMPER INTACT)
A C
B
D
B
D
W
Y
G
JUMPER
W
Y
G
JUMPER
R
Rc
R
Rc
HEATING RELAY OR VALVE COIL
L1 (HOT) L2
HEATING RELAY OR VALVE COIL 1
COOLING CONTACTOR COIL FAN RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
L1 (HOT) L2
M1709B
1
POWER SUPPLY. M1710B
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5-WIRE HEAT/COOL (JUMPER REMOVED)
A C
3-WIRE COOL-ONLY (JUMPER INTACT)
A C
B
D B D
W
Y
G W Y G
JUMPER
R Rc R Rc
HEATING RELAY OR VALVE COIL
FAN RELAY
COOLING CONTACTOR COIL FAN RELAY
1 L1 (HOT) L2 1
COOLING CONTACTOR COIL L2
1
L1 (HOT) L2
L1 (HOT) POWER SUPPLY. Mount Thermostat
NOTE: To remove thermostat from wall, first pull out at bottom of thermostat, then remove top.
A. SWING OPEN COVER TO
CHECK OPERATION.
AM TU LEAVE
Clock/Day
Time
TEMP
Run Progra
m
Weekday Hold Temp Weekend Clear Usage
Present Set
Fan Auto
On Cool
System Off Heat
M13545
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Step 10. [. . . ] Make sure the System switch at the air conditioner is in the On position; set it to On if it is in the Off position.
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If. . . Allow five to ten minutes after changing the setting before the air conditioner starts. If temperature setting is lower than current temperature, and the display says COOL, move the System switch from Cool to Off for ten minutes. If air conditioner comes on, compressor may have reached its high-limit temperature protection and shut down. If air conditioner does not come on after the ten minutes and the display says COOL, contact Honeywell Consumer Services at 1-800-468-1502. [. . . ]
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