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Honeywell DELUXEHEATPUMP T8511G Installation Instructions Manual

Deluxe heat pump zone thermostat.
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APPLICATION
The T8511G Deluxe Heat Pump Zone Thermostat provides electronic control of 24 Vac heat pump zoned systems. Refer
to Table 1 for a general description of the thermostat.
Model
Application
T8511G Zone 1 on MABS II or
TotalZone® system
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash.
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of the old thermostat.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
Location
Install the thermostat about 5 ft (1.5m) above the floor in
an area with good air circulation at average temperature.
See Fig. 1.
®U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. •
T8511G Deluxe Heat Pump
Table 1. Description of T8511 Thermostat.
Powering Method
Requires common wire to
power supply
• All Rights Reserved
/
Zone Thermostat
INSTALLATION INSTRUCTIONS
Changeover
System Selection Fan Selection
Automatic or
Em Heat-Heat-Off-
Manual
Do not install the thermostat where it can be affected by:
— drafts, or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
Wallplate Installation
The thermostat can be mounted horizontally on the wall or
on a 2 in. x 4 in. wiring box. Position wallplate horizontally
on the wall or on a 2 in. x 4 in. wiring box.
1. Position and level the wallplate (for appearance
only). The thermostat will function properly even
when not level.
2. Use a pencil to mark the mounting holes. See Fig. 2.
3. Remove the wallplate from the wall and drill two
3/16 inch holes in the wall (if drywall) as marked.
For firmer material such as plaster, drill two 7/32 inch
holes. Gently tap anchors (provided) into the drilled
holes until flush with the wall.
4. Position the wallplate over the holes, pulling wires
through the wiring opening.
5. Loosely insert the mounting screws into the holes.
6. Tighten mounting screws.
X-XX UL
On-Auto
Cool-Auto
69-1052-1

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   Summary of Contents for Honeywell DELUXEHEATPUMP T8511G

  • Page 1 APPLICATION The T8511G Deluxe Heat Pump Zone Thermostat provides electronic control of 24 Vac heat pump zoned systems. Refer to Table 1 for a general description of the thermostat. Model Application T8511G Zone 1 on MABS II or TotalZone® system...
  • Page 2 T8511G DELUXE HEAT PUMP ZONE THERMOSTAT WIRES THROUGH WALL WALL ANCHORS Fig. 2. Mounting the wallplate. 69-1052—1 5 FEET [1.5 METERS] Fig. 1. Typical location of thermostat. Wiring All wiring must comply with local electrical codes and WALL ordinances. Refer to Fig. 3 and 4 for typical hookups. A letter code is located near each terminal for identification.
  • Page 3 INSERTION STRIP FOR WRAPAROUND 5/16 IN. (8 MM). INSERTION STRIP 7/16 IN. (11 MM). Fig. 5. Proper wiring technique. T8511G DELUXE HEAT PUMP ZONE THERMOSTAT Mounting Thermostat OUTDOOR TEMPERATURE 1. Engage tabs at the top of the thermostat and SENSOR wallplate.
  • Page 4: Temperature Settings

    T8511G DELUXE HEAT PUMP ZONE THERMOSTAT SETTINGS System and Fan Settings System settings control the thermostat operation as follows: Em Heat: Emergency heat relay is automatically controlled by the thermostat. The cooling system is off. The compressor is de-energized. Heat: The thermostat controls the heating.
  • Page 5 System on indicator (flame=heat, snowflake=cool) is displayed Temperature display adjustment Available on select models. T8511G DELUXE HEAT PUMP ZONE THERMOSTAT Table 2. Thermostat Installer Setup Options. Factory Setting Display Description Display — — Stage 2 03, 06 or 09 —...
  • Page 6 T8511G DELUXE HEAT PUMP ZONE THERMOSTAT IMPORTANT Review the settings to confirm that they match the system. To exit the Installer Setup, press and hold the Information i key until the display returns to normal (approximately three seconds). INSTALLER SYSTEM-TEST Use the Installer System-Test to check the thermostat operation.
  • Page 7 The first two large digits are the month and the third digit is the last digit of the year (Ex- ample: 027=February 1997). T8511G DELUXE HEAT PUMP ZONE THERMOSTAT Table 4. Installer System-Test Options (Continued) . and decrease keys together for three seconds to exit the system-test.
  • Page 8: Troubleshooting Guide

    T8511G DELUXE HEAT PUMP ZONE THERMOSTAT 5. Press the increase key again to display the EEPROM identification code. 6. Press and hold the increase keys together, until the room temperature is displayed, to exit the system-test. The system-test times out after ten minutes without any key presses.
  • Page 9 Wrong sensor. Available on select models. T8511G DELUXE HEAT PUMP ZONE THERMOSTAT Troubleshooting Guide (Continued). • Check that C terminal is connected to the system transformer. • Check for 24 Vac between C and R and between R and Y1 terminals.
  • Page 10 T8511G DELUXE HEAT PUMP ZONE THERMOSTAT 69-1052—1...
  • Page 11 T8511G DELUXE HEAT PUMP ZONE THERMOSTAT 69-1052—1...
  • Page 12 T8511G DELUXE HEAT PUMP ZONE THERMOSTAT Helping You Control Your World ® Honeywell Trol-A-Temp 57 Bushes Lane Elmwood Park, NJ 07407-3204 (201) 794-8004 (800) 828-8367 Fax: (201) 794-1359 69-1052—1 J.H. Rev. 6-97 Printed in Taiwan R.O.C. www.honeywell.com/yourhome 69-1052—1...

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