Local Operator Interface: Display System - A.O. Smith 100 Series Service Handbook

LOCAL OPERATOR INTERFACE: DISPLAY SYSTEM

The S7999D is a microprocessor-based touchscreen Operator Interface (OI) display that provide an operator interface for monitoring
and configuring parameters in the Burner Control system.
The S7999D is used to monitor an individual burner on the XB Boilers/XWH Water Heaters applications in a lead/lag arrangement. It
consists of 2 RS485 ports (COM 1 & COM 2) and USB port. The S7999D display can be flush front or behind mounted into a panel
cutout. Wiring connections to the S7999D are through a removable 8-pin wiring connector.
FEATURES
• Individual boiler/water heater status, configuration, history, and diagnostics.
• Allows configuration and monitoring of the Burner Control Controls burner control sequence, flame signal, diagnostics, historical
files, and faults.
• S7999D OI Display only:
• Allows switching view between multiple burners.
• Allows viewing Lead-Lag Master.
• Real-time data trending analysis and transferring saved trend data to Excel spreadsheet.
• 7" 800 x 480, 24 bit high resolution color LCD touch screen for clarity.
• Audio output with integral speaker for sound output.
• Adjustable backlight control.
• Real time clock with coin-cell battery back up (CR2032).
• S7999D has Black Border.
• Volume control.
• Screen Capture function to capture screen images.
• USB port for file transfers and software updates
• 2 RS-485 (COM1 & 2) ports for Modbus™ interface to Burner controls and BAS Gateway.
• Windows® CE 6.0 Operating System.
• 8-pin connector, back-up battery and mounting hardware are provided.
SPECIFICATIONS
1. Electrical Ratings:
• Input Voltage: 18 – 30 Vac (24Vac nominal), 50/60 Hz
• Input Current: 500 mA max.
• Power consumption: 12W max.
2. Operating Temperature: -4 to 158 ºF (-20 to 70 ºC)
3. Storage/Shipping Temperature: -22 to 176 ºF (-30 to 80 ºC)
4. Humidity: 90% RH, non-condensing.
5. Enclosure rating: IP10 / NEMA 1
44
FIGURE 27. S7999D DISPLAY SYSTEM
Servicing should only be performed by a Qualified Service Agent