Honeywell W7761A specifications

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74-2699

Table of Contents

Introduction ...........................................................................................................................

Description of Devices....................................................................................... 4

Control Application............................................................................................. 5

Control Provided................................................................................................. 5

Products Covered............................................................................................... 6

Organization of Manual...................................................................................... 6

Applicable Literature.......................................................................................... 6

Product Names.................................................................................................. 6

Agency Listings.................................................................................................. 7

Abbreviations and Definitions............................................................................. 7

Construction....................................................................................................... 9

Controllers..................................................................................................... 9

Performance Specifications...................................................................... 12

Wall Modules................................................................................................. 15

Configurations.................................................................................................... 16

Mixed-Output-Type Control........................................................................... 17

Occupancy Sensor........................................................................................ 17

Window Open/Closed Digital Input................................................................ 17

Wall Module Options..................................................................................... 17

Dirty Filter Monitor......................................................................................... 17

Indoor Air Quality (IAQ) Override................................................................... 17

Application Steps ...........................................................................................................................

Overview............................................................................................................ 18

Step 1. Plan The System.................................................................................... 18

Step 2. Determine Other Bus Devices Required................................................ 19

Step 3. Lay Out Communications and Power Wiring......................................... 19

E-Bus Layout................................................................................................. 19

Power Wiring................................................................................................. 21

Power Budget Calculation Example:......................................................... 21

Line Loss:................................................................................................. 22

Step 4. Prepare Wiring Diagrams ...................................................................... 24

General Considerations................................................................................. 24

W7761A Devices........................................................................................... 24

E-Bus Termination Module............................................................................ 30

Step 5. Order Equipment.................................................................................... 33

Step 6. Configure Devices.................................................................................. 36

Step 7. Troubleshooting..................................................................................... 36

Troubleshooting Excel 10 Controllers and Wall Modules.............................. 36

Temperature Sensor and Setpoint Potentiometer Resistance Ranges......... 36

Alarms........................................................................................................... 36

Broadcasting the Service Message............................................................... 37

W7761A Controller Status LEDs................................................................... 37

T7780 DDWM Bypass Pushbutton................................................................ 38

List of Figures ........................................................................................................................... 2

Fig. 1. Typical system overview......................................................................... 4

Fig. 2. Typical W7761A control application........................................................ 5

Fig. 3. Excel 10 W7761A Remote I/O Device.................................................... 10

Fig. 4. W7761A construction.............................................................................. 11

Excel 10 W7761A Remote Input/Output

Device

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