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X-XX UL

INSTALLATION INSTRUCTIONS

®U.S. Registered Trademark

T8524C,D Multistage

Microelectronic Thermostats

APPLICATION

The T8524C, D Multistage Microelectronic Thermostat provides electronic control of 24 Vac two-stage heating and two-

stage cooling systems. Refer to Table 1 for a general description of the thermostat. All T8524 Thermostats require a

common wire to supply power.

Table 1. Description of T8524 Thermostats.

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.

CAUTION

Disconnect power supply to prevent electrical

shock or equipment damage.

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.

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.

T8524 System Changeover

System

Selection

Fan

Selection Comments

C Heat-Cool Manual Heat-Off-Cool On-Auto System and fan selections are done by

switches.

D Heat-Cool Automatic Heat-Off-Cool-Auto On-Auto System and fan selections are done by

keyboard.

69-1055-1

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1 - Microelectronic Thermostats

Pagina 2 - IMPORTANT

69-1055—110T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATS

Pagina 3 - SETTINGS

69-1055-111T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATS

Pagina 4 - INSTALLER SETUP

69-1055—112T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSHome and Building ControlHoneywell Limited-Honeywell Limitée155 Gordon Baker RoadNorth York,

Pagina 5 - (Continued)

69-1055—12T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSFig. 1. Typical location of thermostat.Fig. 2. Mounting the wallplate.2. Use a pencil to mark

Pagina 6 - INSTALLER SYSTEM TEST

69-1055-13T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSFig. 3. Typical hookup of T8524 in a multistageheating and cooling system.Fig. 4. Proper wiri

Pagina 7 - Thermostat Information

69-1055—14T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSA combination of key presses are required to use theInstaller Setup feature.— To enter the In

Pagina 8 - TROUBLESHOOTING GUIDE

69-1055-15T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSTable 2. Thermostat Installer Setup Options.aAvailable on select models.b Installer Setup Num

Pagina 9 - Available on select models

69-1055—16T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSInstaller Setup Number(Press i keyFactory-SettingOther Choices (Press ▲ or ▼ key to ch

Pagina 10 - 69-1055—1

69-1055-17T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSa System fan is energized only if set for electric heat.Thermostat Information1. Press the In

Pagina 11 - 69-1055-1

69-1055—18T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATS3. Press the increase ▲ key again to display thesoftware identification code.(Example: 02 = s

Pagina 12

69-1055-19T8524C,D MULTISTAGE MICROELECTRONIC THERMOSTATSSymptom Possible Cause ActionHeating will notcome on.No power to the thermostat. • Check that

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