Honeywell T7771A Bedienungsanleitung

PRODUCT DATA

® U.S. Registered Trademark

T7771A

Remote Temperature Sensor

GENERAL

The T7771A Remote Temperature Sensors are direct wired

wall modules for use with the Honeywell T7350 Commercial

Programmable Thermostat. The T7771A has a space

temperature sensor, LED pushbutton setpoint adjustment, and

override with LED.

FEATURES

• Pushbutton setpoint adjustment with LED indicators.

• Occupied/unoccupied override (bypass) with LED.

•L

ONWORKS® bus jack.

• Operating range 45 to 99°F (7 to 37°C).

IMPORTANT

• The T7771 compatibility with the T7350 only applies

to T7350 models with date code 0423 or later.

• To ensure the purchase of a compatible T7350, order

either:

— Y7355B1002 (consisting of: T7350B Thermostat,

T7771A and C7041B Sensors).

— Y7355D1008 (consisting of: T7350D Thermostat,

T7771A, C7041B Sensors).

SPECIFICATIONS

Construction: Two-piece construction, cover and internally

wired subbase. Field wiring 14 to 22 AWG (2.0 to 0.34

sq. mm) connects to a terminal block in the subbase. Wall

module is activated by plugging into prewired subbase.

Mounting Options:

The T7771 can be mounted on a standard two by four inch

junction box or on a 60 mm diameter junction box.

Dimensions (H/W/D):

5-1/16 x 3-1/8 x 1 in. (128 x 80 x 25 mm).

Setpoint Adjustment:

The setpoint offset allows for ±3°F from the programmed

T7350 setpoint.

Environmental Ratings:

Operating Temperature: 45° to 99°F (7° to 37°C).

Shipping Temperature: -40° to 150°F (-40° to 65°C).

Relative Humidity: 5% to 95% noncondensing.

Temperature Sensor Operating Range:

45 to 99°F (10 to 37°C).

Temperature Sensor Accuracy

T7771A 20K Ohm Nonlinearized Sensor:

All T7771 models are furnished with a 20K Ohm nonlinear

NTC temperature sensor that follows a specific

temperature-resistance curve. See Fig. 1.

Sensor accuracy at 77°F is ±0.36°F (±0.2°C)

See form 63-7074 for detailed nominal temperature resistance

output in table form.

NOTE: In addition, a jumper allows for 10K Ohm output to

accommodate using multiple sensors for temperature

averaging applications with the T7350 Commercial

Thermostat. See the Wiring section for details.

T7771A REMOTE TEMPERATURE SENSOR

63-2617 2

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

Fig. 1. Temperature vs. resistance for nonlinear sensor.

Communications:

Includes a LONMARK® bus communications port. If needed,

the jack plug must be removed in the field, and terminals 1

and 2 wired according to the installation instructions to min-

imize installation errors due to miswiring.

The recommended wire size for the LONMARK® bus is

Level IV, 22 AWG (0.34 sq.mm) plenum or non-plenum

rated, nonshielded, twisted pair, solid conductor wire.

Wall Module Bypass Override/LED Operation

When the T7771 override button is pushed, the T7350 setting

changes to Temporary Occupied. If pressed again, the T7350

setting changes back to Occupied. The override button has no

effect when the T7350 programmed setting is already

Occupied.

BEFORE INSTALLATION

Cover Disassembly

One locking mechanism is used on the wall module cover.

After installation, to disassemble the cover and the subbase

see Fig. 2.

Fig. 2. Cover disassembly.

CAUTION

Erratic System Operation Hazard.

Failure to follow proper wiring practices can

introduce disruptive electrical interference (noise).

Keep wiring at least one foot away from large inductive

loads such as motors line starters, lighting ballasts,

and large power distribution panels.

Shielded cable is required in installations where these

guidelines cannot be met.

Ground shield only to grounded controller case.

IMPORTANT

All wiring must comply with local electrical codes

and ordinances or as specified on installation

wiring diagrams.

— Wall module wiring can be sized from 14 to 22 AWG

(2.0 to 0.34 sq mm) depending on the application.

— The maximum length of wire from a device to a wall

module is 1000 ft (305m).

— Twisted pair wire is recommended for wire runs longer than

100 ft (30.5m).

— The cover for the wall module is packed separately from

the subbase for ease of installation.

See Fig. 3 to release/replace the subbase terminal block.

TEMPERATURE (DEGREES)

30 40 50 60 70 80 90 100 110

010 20 30 40

RESISTANCE (OHMS)

20K OHM AT

77oF (25oC)

80K

70K

60K

50K

40K

30K

20K

10K

M5874A

M22172

7771A

On/Off

Normal

Cooler Warmer

Temperature Control

STEP

T7771A REMOTE TEMPERATURE SENSOR

3 63-2617

Fig. 3. Releasing/replacing terminal block.

INSTALLATION

CAUTION

Equipment Damage Hazard.

Electrostatic discharge can short equipment

circuitry.

Ensure that you are properly grounded before

handling the unit.

Touch only the plastic cover, casing, and buttons.

Mount the T7771A Wall Module on an inside wall

approximately 54 in. (1372 mm) from the floor (or in the

specified location) to allow exposure to the average zone

temperature. Do not mount the wall module on an outside

wall, on a wall containing waterpipes or near air ducts. Avoid

locations that are exposed to discharge air from registers or

radiation from lights, appliances, or the sun.

The wall module can be mounted on a wall, on a standard

utility conduit box using No. 6 (3.5 mm) screws or on a 60 mm

wall outlet box (see Fig. 5). When mounting directly on a wall,

use the type of screws appropriate for the wall material.

NOTE: See Fig. 4 for subbase mounting dimensions.

Fig. 4. T7771A Subbase dimensions in in. (mm).

Fig. 5. Mounting wall modules on standard utility

conduit box or 60 mm wall outlet box.

Wiring

Attach the wires from the device sensor terminals to the

appropriate wall module terminals. See Fig. 6.

CAUTION

Improper Electrical Contact Hazard.

Screw type terminal blocks are designed to accept

no more than one 14 AWG (2.5 sq mm) conductor.

Connect multiple wires that are 14 AWG (2.5 sq mm)

with a wire nut. Include a pigtail with this wire group

and attach the pigtail to the individual terminal block.

Wire the terminal blocks as follows:

1. For single wires, strip 3/16 in. (5 mm); for multiple wires

going into one terminal, strip 1/2 in. (13 mm) insulation

from the conductor.

2. If two or more wires are being inserted into one

terminal, twist the wires together before inserting.

NOTE: When two or more wires are being inserted

into one terminal, be sure to twist them

together. Deviation from this rule can result

in improper electrical contact. See Fig. 9.

3. Insert the wire in the required terminal location and

tighten the screw to complete the termination.

4. Verify wall module wiring with Fig. 6.

NOTE: Wire the E-Bus using Level IV 22 AWG (0.34 sq mm)

plenum or non-plenum rated, unshielded, twisted

pair, solid conductor wire.

M17988

PRESS SHADED AREA

OF TAB WITH THUMB TO

RELEASE TERMINAL BLOCK

FOR EASIER WIRING

On/Off

Normal

Cooler Warmer

Temperature Control

15/16

(23)

M22174

3-3/16 (80)

5-1/16

(128)

KNOCKOUTS FOR

EUROPEAN APPLICATIONS

2-3/8 (60)

2-3/8

(60)

STANDARD

UTILITY

CONDUIT

BOX (2 X 4)

MOUNTING

HOLES

M22173

STANDARD UTILITY

CONDUIT BOX

SUBBASE

NO. 6 SCREW

60 mm WALL

OUTLET BOX

SUBBASE

3.5 mm SCREW

FRONT COVER

On/Off

Normal

Cooler Warmer

Temperature Control

On/Off

Normal

Cooler Warmer

Temperature Control

63-2617 B.B. 6-04 www.honeywell.com

T7771A REMOTE TEMPERATURE SENSOR

Automation and Control Solutions ACS Control Products

Honeywell International Inc. Honeywell Limited-Honeywell Limitée Honeywell AG

1985 Douglas Drive North 35 Dynamic Drive Böblinger Straße 17

Golden Valley, MN 55422 Scarborough, Ontario D-71101 Schönaich

M1V 4Z9 Phone (49-7041) 637-01

Fax (49-7041) 637-493

Averaging Multiple Sensors

The default position for the J2 jumper is 20K ohms. When

using a single sensor, leave the jumper in this position.

For temperature averaging using a T7350 Commercial

Thermostat and multiple sensors, use the following

guidelines:

— Only one T7771 can be used.

— For the second sensor, use a T7770A3002 (which has a

10K ohm output).

— Wire the two sensors in series.

Fig. 6. Wiring diagram for T7771A Wall Modules.

Fig. 7. Temperature averaging with two sensors.

Fig. 8. Temperature averaging with four sensors.

Fig. 9. Attaching two wires at wall module terminals.

When all wiring is complete, attach the cover of the T7771A

Wall Module by reversing step 2 of Fig. 2.

123456789

SENSOR

GND

E-BUS

M22175

BYPASS

STATUS

SETPT

10K OHM OUTPUT

20K OHM OUTPUT

M22280

T4 T3

T7350 SUBBASE

T7770A3002

T4 T3

T7771A

T4 T3

10K OHM

OUTPUT

APPROPRIATE T7771A JUMPER POSITION

FOR TWO SENSOR TEMPERATURE AVERAGING.

M22281

T4 T3

T7770A1006

T4 T3

T7770A1006

T4 T3

T7350 SUBBASE

T7770A1006

T4 T3

T7771A

T4 T3 20K OHM

OUTPUT

APPROPRIATE T7771A JUMPER POSITION

FOR FOUR SENSOR TEMPERATURE AVERAGING.

1/2

(13)

STRIP 1/2 IN.

(13 MM) FROM

WIRES TO BE

ATTACHED AT

ONE TERMINAL.

2.TWIST WIRES

TOGETHER

WITH PLIERS

(A MINIMUM OF

THREE TURNS).

3. CUT TWISTED END OF WIRES TO

3/16 IN. (5 MM) BEFORE INSERTING

INTO TERMINAL AND TIGHTENING

SCREW. THEN PULL ON EACH WIRE

IN ALL TERMINALS TO CHECK FOR

GOOD MECHANICAL CONNECTION.

M11413

CONTROLLER OR

WALL MODULE

E-BUS CONNECTOR

TERMINALS

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