Honeywell W7761A - Manual

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U.S. Registered Trademark
Copyright
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1998 Honeywell Inc.
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Corporation.
74-2699
CONTENTS
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