Honeywell HEAT PUMP THERMOSTAT T8411R Manual de usuario

APPLICATION

The T8411R Heat Pump Thermostat provides 24V control

of a two-stage heating and one-stage cooling heat pump

system with manual changeover from heat to cool. First

stage heating and cooling cycle rates are fixed at 3 cph.

Second stage heating cycle rate is selectable at 3, 6, or

9 cph. Temperature indication can be set for °F or °C.

The T8411R Heat Pump Thermostat is powered directly

from the system transformer. Setpoints are held permanently

in memory and retained during power outages.

The T8411R includes a thermostat, wallplate (for wiring

and mounting thermostat) and owner’s guide. A 7 3/8 in.

(188 mm) x 5 3/4 in. (146 mm) Decorator Cover Plate (for

covering wall marks) is available separately. Order

Honeywell part no. 209650A (Premier White®).

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 an old control containing mercury in a

sealed tube.

INSTALLATION

When Installing this Product…

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a hazard-

ous 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 installation is complete, check out product

operation as provided in these instructions.

X-XX UL

INSTALLATION INSTRUCTIONS

®U.S. Registered Trademark

T8411R Electronic

Heat Pump Thermostat

CAUTION

Disconnect power supply before beginning wiring

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 the sun or appliances.

—concealed pipes and chimneys.

—unheated (uncooled) areas such as an outside wall

behind the thermostat.

This thermostat is a precision instrument and was carefully

adjusted at the factory.

Handle it carefully.

Mounting Wallplate

IMPORTANT

Level for appearance only. The thermostat

functions normally even when not level.

Mount wallplate, T8411R and the screws provided

(see Fig. 2) as follows:

1. Position the wallplate at the desired location on the

wall.

2. Use a pencil to mark the mounting holes.

3. Remove the wallplate from the wall and drill two 3/16

in. holes in the wall (if drywall) and two 7/32 in. holes

for firmer material such as plaster or wood. Gently

tap the anchors (provided) into the holes until flush

with the wall.

4. Position the wallplate over the holes.

5. Pull the thermostat wire through the entrance hole

on the wallplate.

69-1037

69-1037 2

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

Fig. 1. Typical location of thermostat.

5 FEET

[1.5 METERS]

YES

M11338

Fig. 2. Mounting wallplate to wall.

Wiring

IMPORTANT

Use 18-gauge thermostat cable for proper wiring.

All wiring must comply with local electrical codes and

ordinances.

CAUTION

Disconnect the power supply to prevent electrical

shock or equipment damage.

The shape of the terminals permits insertion of straight or

wraparound wiring connections; either method is acceptable.

See Fig. 3.

Fig. 3. Wiring connections.

M12202

WALL WALL

ANCHORS (2)

WALLPLATE

MOUNTING

SCREWS (2)

TERMINAL

SCREW

M11334

FOR STRAIGHT INSERTION

STRIP 5/16 IN. (8 MM)

FOR WRAPAROUND

STRIP 7/16 IN. (11 MM)

69-1037

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

Fig. 4. Restrict wiring to shaded area.

NOTE: Restrict all wiring to the shaded area between the

terminals. See Fig. 4.

Refer to Fig. 5 for typical wiring hookup. A letter code is

located near each terminal for identification.

1. Loosen the terminal screws on the wallplate and

connect the system wires. See Fig. 5.

2. Securely tighten each terminal screw.

3. Push the excess wire back into the hole.

4. Plug the hole with nonflammable insulation to

prevent drafts from affecting the thermostat.

Mounting Thermostat To Wallplate

1. Engage the tabs at the top of the thermostat and

wallplate.

2. Swing down the thermostat and press the lower

edge of the thermostat onto the wallplate to latch.

See Fig. 6.

Fig. 5. T8411R two-stage heat and one-stage cool wiring diagram with manual changeover.

KEEP WIRING IN

SHADED AREA

MOUNTING

SCREW HOLE

MOUNTING

SCREW HOLE

WIRING ENTRANCE

HOLE

M11331

(HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPERATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).

SYSTEM

SWITCH

HEAT

OFF

COOL

EM. HT.

AUXILARY

HEAT RELAY

CHANGEOVER

VALVE HEAT

CHANGEOVER

VALVE COOL

COMPRESSOR

CONTACTOR

COMPRESSOR

CONTACTOR

HEAT

FAN RELAY

RELAY

EMERGENCY

HEAT RELAY

THERMOSTAT

LOGIC

THERMISTOR

SENSOR

POWER

SUPPLY

AUTO

STAGE 2 RELAY

STAGE 1 RELAY

FAN SWITCH

M11333

69-1037 4

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

M11332

SYSTEM

Cool Off Heat Em. Ht.

Auto On

FAN

DASHED LINES INDICATE TABS

ON BACK OF THERMOSTAT

SYSTEM

ol Off Heat Em. Ht.

Auto On

FAN

ENGAGE TABS AT TOP OF THERMOSTAT

WITH SLOTS ON MOUNTING PLATE.

PRESS LOWER EDGE OF

CASE TO LATCH.

Fig. 6. Mounting thermostat to wallplate.

OPERATION

Setting FAN and SYSTEM Switches

Fan and system settings are controlled manually by using

the switches located at the bottom of the thermostat case.

See Fig. 7.

FAN Switch

Fan switch settings are as follows:

On: The fan runs continuously. Use for improved air

circulation.

Auto: Normal setting for most homes. The fan starts

and stops with the equipment.

Slide the switch in the bottom left corner of the thermostat

to select the desired fan setting.

SYSTEM Switch

System switch settings control thermostat operation as

follows:

Cool: Thermostat controls the cooling system.

Off: Both heating and cooling are off.

Heat: Thermostat controls the heating system.

Em Ht: Thermostat cycles Auxiliary Heat (W2) and

Emergency Heat Relay (E) as needed to maintain

setpoint. Terminal L is energized continuously.

(Fault heat relay is on continuously.) Cooling system

is off. Compressor is de-energized.

Slide the switch in the bottom right corner of the thermo-

stat to select the desired system setting.

SYSTEM

Cool Off Heat Em. Ht.

Auto On

FAN

M11330

TEMPERATURE DISPLAY

INCREASE SETTING

DECREASE SETTING

FAN SWITCH

SYSTEM SWITCH

Fig. 7. Temperature display and system switches.

Em Ht and Aux Ht Indications

The indicator points to either Emergency Heat (Em Ht)

or Auxiliary Heat (Aux Ht) when these modes are active.

Em Ht: The  indicator points to Em Ht when the

SYSTEM switch is set at Em Ht.

Aux Ht: The  indicator points to Aux Ht when auxiliary

backup heat is needed to help handle the heating

load.

Set Room

M10287

INDICATOR

Em Ht

Aux Ht

Set Temperature Setpoint

NOTE: Temperature setpoint range is 40°F to 99°F

(4°C to 39°C).

69-1037

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

The temperature setpoint and the room temperature are

shown separately on the digital display. The ▼ indicator

points to Set when the temperature setpoint is displayed

and to Room when the room temperature is displayed.

Set Room

INDICATOR

ROOM TEMPERATURE

SETPOINT TEMPERATURE

M11247

To set temperature setpoint:

1. Select heat or cool by sliding the SYSTEM switch

in the lower right corner of the thermostat to the

desired mode. See Fig. 7.

2. To display the setpoint temperature on the

digital display, press either the ▲ or ▼ key once.

The temperature setpoint is displayed for approxi-

mately five seconds as the indicator points to Set

and flashes.

M11248

3. To increase the setpoint temperature, press the ▲

key. Press once to change the setpoint one

degree; press and hold to change the setpoint

several degrees.

M11249

4. To decrease the setpoint temperature, press the

▼key.

M11250

Setting

C Indication and Heat Cycle Rate

NOTES: To save changes to the °F/°C indication and the

heat cycle rate, all seven steps must be

completed.

In installer setup mode steps 2. through 5., each

press of the ▲key momentarily displays 01 and

each press of the ▼ key momentarily displays

02. When the keys are released, these two-digit

codes are no longer displayed.

To set the °F/°C indication and heat cycle rate:

1. If the room temperature is displayed in °F, set the

temperature setpoint to 52°F. If the room tempera-

ture is displayed in °C, set the temperature setpoint

to 11°C.

M11251

2. Press the ▲ ▼ keys simultaneously for more than

two seconds to light all segments on the display and

to enter installer setup mode. When the keys are

released, a two-digit software code is displayed

(code displayed may vary).

Optional System Checkout

CAUTION

When the heat or cool outputs are turned on, the

five-minute off-timer safety feature is bypassed.

When in steps

and

only, the

▼

key can be

used to turn heat or cool outputs on. Change the

system switch setting to test heat or cool outputs.

No action takes place if the system switch is in

the Off position.

The following examples of system settings show a two

digit software code on the display. The code shown is only

an example; codes may vary.

System setting at Heat:

To turn heat on, press the ▼ key.

M11252

To turn auxiliary heat on, press the ▼ key.

To turn auxiliary heat off, press the ▼ key a third time.

To turn heat off, press the ▼ key a fourth time.

System setting at Cool:

To turn cool on, press the ▼ key.

To turn cool off, press the ▼ key.

3. Press the ▲ key. Factory information is displayed.

Information displayed varies by model. This

information is only for factory use.

M11469

Aux Ht

M11470

M11255

M11256

M11469

M11255

69-1037 6

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

4. Press the ▲ key again to display °C or °F. 1. Slide the SYSTEM switch to Heat and the FAN

switch to Auto.

2. Press and hold the ▲key to raise the temperature

setting several degrees above the room tempera-

ture. After approximately five minutes, the heating

equipment should start.

3. Press the ▼ key to lower the temperature setting

below the room temperature. Heating equipment

should stop.

Cooling

CAUTION

Do not operate cooling if outdoor temperature is

below 50°F (10°C). Refer to equipment manu-

facturer instructions.

To avoid possible compressor damage, allow

the compressor to remain off for five minutes

before restarting.

1. Slide the SYSTEM switch to Cool and the FAN

switch to Auto.

2. Press the ▼ key to lower the temperature setting

several degrees below the room temperature. After

approximately five minutes, the cooling equipment

and fan should start.

3. Press the ▲ key to raise the temperature setting

above the room temperature. Cooling system should

shut down.

Fan

1. Slide the SYSTEM switch to Off and the FAN switch

to On. The fan should run continuously.

2. Slide the FAN switch to Auto. The system turns the

fan on or off with the equipment.

Make certain all equipment responds properly to the

thermostat.

M11260

M11261

M11259

5. Press the ▼ key to change the °C or °F indication.

NOTE: Stage one heat and cool cycle rates are fixed at

3 cph. Only stage two heat cycle rates are

selectable.

6. Press the ▲ key to display the heat cycle rate of 3,

6, or 9. If the desired cycle is displayed, press the ▲

key to exit the installer setup mode. To change the

heat cycle rate, press the ▼key to scroll between 3,

6, and 9. Stop scrolling when the desired rate is

displayed.

7. Press the ▲ key to save all changes, exit installer

setup mode and return to normal control.

NOTE: After exiting installer setup mode, change the

setpoint to the desired room temperature.

CHECKOUT

Heating

CAUTION

To avoid possible compressor damage, allow the

compressor to remain off for five minutes before

restarting.

69-1037

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

69-1037 8

T8411R ELECTRONIC HEAT PUMP THERMOSTAT

Home and Building Control

Honeywell Limited-Honeywell Limitée

155 Gordon Baker Road

North York, Ontario

M2H 3N7

Helping You Control Your World®

69-1037 J.S. 5-97 Printed in Mexico www.honeywell.com/yourhome

Home and Building Control

Honeywell Inc.

Honeywell Plaza

P.O. Box 524

Minneapolis, MN 55408-0524

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