Submittal Sheet

ManualsBrandsHoneywell ManualsCommercial Thermostats & Controls20 K ohm NTC Non-Linear Temperature Wall Module

Table Of Contents

PRODUCT DATA

® U.S. Registered Trademark

63-2617

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.

Summary of content (4 pages)

PAGE 1
T7771A Remote Temperature Sensor PRODUCT DATA FEATURES • Pushbutton setpoint adjustment with LED indicators. • Occupied/unoccupied override (bypass) with LED. • LONWORKS® bus jack. • Operating range 45 to 99°F (7 to 37°C). 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.
PAGE 2
T7771A REMOTE TEMPERATURE SENSOR 80K RESISTANCE (OHMS) 70K T7771A 60K STEP 1 50K Te m 40K Co pe ole ratu re No rm r Co ntr al W arm 30K 20K OHM AT 77oF (25oC) 20K ol er O n/O ff 10K 30 0 40 50 10 60 70 20 80 90 30 TEMPERATURE (DEGREES) 100 110 oF o 40 C M22172 M5874A STEP 2 Fig. 2. Cover disassembly. Fig. 1. Temperature vs. resistance for nonlinear sensor. Communications: Includes a LONMARK® bus communications port.
PAGE 3
T7771A REMOTE TEMPERATURE SENSOR STANDARD UTILITY CONDUIT BOX PRESS SHADED AREA OF TAB WITH THUMB TO RELEASE TERMINAL BLOCK FOR EASIER WIRING SUBBASE NO. 6 SCREW FRONT COVER Te m M17988 Co pe ole ratu No re rm r Co ntr ol al W arm er Fig. 3. Releasing/replacing terminal block. O n/O ff INSTALLATION Te m CAUTION Co n/O SUBBASE ff M22173 Fig. 5. Mounting wall modules on standard utility conduit box or 60 mm wall outlet box.
PAGE 4
T7771A REMOTE TEMPERATURE SENSOR Averaging Multiple Sensors The default position for the J2 jumper is 20K ohms. When using a single sensor, leave the jumper in this position. T7350 SUBBASE T4 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.