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69-0927—4

12

T8511G,R MICROELECTRONIC HEAT PUMP THERMOSTATS

69-0927—4   G.H.   Rev. 04-04

www.honeywell.com/yourhome

Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarorough, Ontario
M1V 4Z9

Automation and Control Solutions

Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422

Summary of Contents for Tradeline T8511G

Page 1: ...on 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out the product operation T8511 Changeover System Selection Fan Selection Comments G Automatic Em Heat Heat Off Auto Cool On Auto System and fan selections are by keyboard R Manual Em Heat Heat Off Cool On Auto System and fan selections are by switches CAUTION Electrical ...

Page 2: ...tion the wallplate over the holes pulling wires through the wiring opening 5 Loosely insert the mounting screws into the holes 6 Tighten mounting screws WIRING All wiring must comply with local electrical codes and ordinances Refer to Fig 3 through 5 for typical hookups A letter code is located near each terminal for identification CAUTION Disconnect power before wiring to prevent electrical shock...

Page 3: ...REQUIRED AVAILABLE ON SELECT MODELS 1 AUX HEAT RELAY M4828 COMPRESSOR CONTACTOR FAN RELAY R OT OT O G Y C E L OUTDOOR TEMPERATURE SENSOR COOL CHANGEOVER VALVE EM HEAT RELAY THERMOSTAT 1 2 2 W2 EQUIPMENT MONITOR L1 HOT L2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED AVAILABLE ON SELECT MODELS 1 M4829 COMPRESSOR CONTACTOR FAN RELAY R OT OT O G Y C L OUTDOOR TEMPERATURE S...

Page 4: ...e cooling system is off The compressor is de energized Heat The thermostat controls the heating Off Both the heating and cooling are off Cool The thermostat controls the cooling Auto The thermostat automatically changes between heating and cooling operation depending on the indoor temperature Fan settings control the system fan as follows On Fan operates continuously Auto Equipment controls fan Th...

Page 5: ...formation i key until the display returns to normal approximately three seconds The display scrolls the numbers backwards to get to the normal display The Installer Setup is automatically exited if no key presses are made for five minutes Fig 11 Display of all the segments of the LCD Fig 12 Display of Installer Setup and setting NOTE Only configurable numbers are shown Em HeatOffCool Auto Only Hea...

Page 6: ...e in heating Not used 30 thru 32 Minimum off time for the compressor 33 05 5 minute minimum off time for the compressor 00 01 02 03 or 04 Minimum number of minutes 0 thru 5 the compressor will be off between calls for the compressor Heating setpoint range stop 34 90 Heating setpoint can be set no higher than 90 F 40 thru 90 Number can be set anywhere between 40 and 90 in 1 F increments Cooling set...

Page 7: ...ff 30 39 Cooling equipment can be turned on and off 40 49 Fan equipment can be turned on and off 60 69 System key or system switch position test 70 79 Thermostat information including date code and software versions are displayed Table 4 Installer System Test Options a Available on select models b T8511R models with fixed emergency heat output will not respond to this key press Continued Key To Pr...

Page 8: ...0 Fan turns off T8511G System Key or T8511R System Switch Operation System Test IMPORTANT Test numbers will only be displayed when the system is configured for the selected function EXAMPLE Numbers 60 61 and 62 are the only numbers that will be displayed when a system is configured for heat only SYSTEM KEY OR SWITCH SYSTEM TEST When system switch is used move switch to see Test Number i 60 Change ...

Page 9: ... with troubleshooting Thermostat microprocessor is locked up Remove the thermostat from the wallplate for 2 minutes After 2 minutes replace the thermostat on the wallplate Temperature display is incorrect Room temperature display has been reconfigured Enter Installer Setup mode number 37 and reconfigure the display Thermostat is configured for F or C display a Enter Installer Setup mode number 14 ...

Page 10: ...eck if the system fuse is blown replace the fuse check if the system switch at the equipment is in the Off position set to the On position check wiring between thermostat and HVAC equipment replace any broken wires and tighten any loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum off time is activated Wait up to five minutes for the system to respond Enter Inst...

Page 11: ...69 0927 4 11 T8511G R MICROELECTRONIC HEAT PUMP THERMOSTATS ...

Page 12: ...HERMOSTATS 69 0927 4 G H Rev 04 04 www honeywell com yourhome Honeywell Limited Honeywell Limitée 35 Dynamic Drive Scarorough Ontario M1V 4Z9 Automation and Control Solutions Honeywell International Inc 1985 Douglas Drive North Golden Valley MN 55422 ...

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