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X-XX UL

INSTALLATION INSTRUCTIONS

®U.S. Registered Trademark

T8501D

Deluxe Zone Thermostat

APPLICATION

The T8501 Deluxe Zone Thermostat provides electronic control of 24 Vac single-stage zoned heating and cooling systems.

Refer to Table 1 for a general description of the thermostat.

Table 1. Description of T8501 Thermostat.

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.

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.

Model Application Powering Method Changeover System Selection Fan Selection

T8501D Zone 1 on MABS II or

TotalZone® system

Requires common wire to

power supply

Automatic or

Manual

Heat-Off-Cool-Auto On-Auto

69-1049-1

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1 - Deluxe Zone Thermostat

Pagina 2

69-1049—110T8501D DELUXE ZONE THERMOSTAT

Pagina 3 - Using Thermostat Keys

69-1049—111T8501D DELUXE ZONE THERMOSTAT

Pagina 4 - INSTALLER SETUP

69-1049—112T8501D DELUXE ZONE THERMOSTATHelping You Control Your World®69-1049—1 J.H. Rev. 6-97 Printed in Taiwan R.O.C. www.honeywell.com/yourh

Pagina 5

69-1049—12T8501D DELUXE ZONE THERMOSTATFig. 1. Typical location of thermostat.Fig. 2. Mounting the wallplate.WiringAll wiring must comply with local e

Pagina 6 - INSTALLER SYSTEM-TEST

69-1049—13T8501D DELUXE ZONE THERMOSTATFig. 3. Typical wiring diagram for T8501D with zone 1MABS II control panel.Fig. 4. Typical wiring diagram for T

Pagina 7 - THERMOSTAT INFORMATION

69-1049—14T8501D DELUXE ZONE THERMOSTATSETTINGSSystem and Fan SettingsSystem settings control the thermostat operation asfollows:Heat: The thermostat

Pagina 8 - CHECKOUT

69-1049—15T8501D DELUXE ZONE THERMOSTATTable 2. Thermostat Installer Setup Options.aNumber 02 must be set to 01 to extend fan operation.bAvailable on

Pagina 9

69-1049—16T8501D DELUXE ZONE THERMOSTATIMPORTANTReview the settings to confirm that they matchthe system. To exit the Installer Setup, press andhold t

Pagina 10 - T8501D DELUXE ZONE THERMOSTAT

69-1049—17T8501D DELUXE ZONE THERMOSTATTable 4. Installer Self-Test Options (Continued).NOTE: Press and hold the increase ▲ and decrease ▼ keys togeth

Pagina 11

69-1049—18T8501D DELUXE ZONE THERMOSTAT5. Press the increase ▲ key again to display theEEPROM identification code.6. Press and hold the increase ▲ and

Pagina 12

69-1049—19T8501D DELUXE ZONE THERMOSTATTroubleshooting Guide (Continued).aAvailable on select models.Symptom Possible Cause ActionHeating will notcome

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