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EXCEL 10 HYDRONIC CONTROLLER SYSTEM ENGINEERING
INTRODUCTION
Description of Devices
The zone controlled by the W7762 Controllers will typically
use an Excel 10 wall module with a temperature sensor for
space temperature measurement, analog setpoint input,
bypass digital input push-button, and override status LED.
See page 4 for form numbers of Excel 10 wall module
literature for further information.
The W7762A and B Controllers are two Hydronic Controllers
in the Excel 10 family product line. They cover a wide range
of control applications including radiators, induction units, and
fan coil units with manual fan switching, and are suitable for
either wall mounting or unit mounting. Heating systems can
be water or electric, and cooling systems can be chilled water
supply or compressors. Extensive timing and interlock
features make the W7762 especially suitable for systems
using electric heat and compressors. The W7762 Controllers
are capable of stand-alone operation; however, optimum
functional benefits are achieved when the network
communication capabilities are used.
The Q7750A Excel 10 Zone Manager is a communications
interface that allows devices on the Excel 10 Echelon®
LONWORKS® network (E-Bus) to communicate with devices on
the EXCEL 5000® System C-Bus. Fig. 1 shows an overview
of a typical system layout. The Q7750A also provides some
control and monitoring functions.
Q7752A
E-BUS
SERIAL
ADAPTER
PERSONAL COMPUTER TOOLS
E-VISION
C-BUS COMMUNICATION NETWORK
EXCEL 10
Q7750A
ZONE
MANAGER
EXCEL BUILDING SUPERVISOR
EXCEL 500
C-BUS TO E-BUS
INTERFACE DEVICE
E-BUS COMMUNICATIONS NETWORK
E-BUS COMMUNICATIONS NETWORK
EXCEL 10 HYDRONIC
CONTROLLER
Q7751A
E-BUS
ROUTER
Fig. 1. Typical system overview
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