1
A Room Controller is a combination zone sensor and controller that is used for zone
control. The two models of Room Controller are:
•
RC642 - No user interface
•
RC642D - Has an LCD display and buttons that allow a user to:
○
Adjust the setpoint
○
Set the zone to occupied
○
Display information such as zone temperature, outside air temperature, override
time, and setpoints
○
Set schedules
○
Adjust the Room Controller's time
A Room Controller can be installed on a WebCTRL network or as a stand-alone unit.
On a WebCTRL
network
Stand-alone
unit ***
Model:
RC642
X
RC642D
X
X
Control program:
Built-in *
X
Custom **
X
X
Set schedules:
On Room Controller
X
In WebCTRL
X
*
The display model contains 12 built-in control programs from which you can choose.
Use a built-in control program only in a stand-alone Room Controller. See
To select a
built-in control program
(page 31) for a description of the control programs.
**
See
Creating a custom control program
(page 6).
*** Stand-alone Room Controllers can be integrated into a WebCTRL system at a later
time. If you expect to do this, ALC recommends that you initially set up each stand-
alone Room Controller with:
• a custom control program
• a unique address
Driver
DRV_RCM
Maximum number of downloadable
control programs
1
Maximum number of BACnet objects*
300
* Depends on available memory.
What is the Room Controller?
Driver and control
program
