Data Sheet for Product

Technical Specification Sheet
Rev. 5, April, 2001
Document No. 149-318P25 Page 1 of 5
Laboratory Room Controller
Figure 1. Laboratory Room Controller - Pneumatic Actuation.
Figure 2. Laboratory Room Controller – Electronic Actuation.
Description
The APOGEE™ Automation System Laboratory Room
Controller (LRC) provides Direct Digital Control (DDC)
for laboratory space pressurization and temperature
control. The controller maintains the user defined
differential airflow between the room air supply and
Fume Hood Controller exhaust and general exhaust
terminals by measuring the airflow and controlling the
damper position of the supply and general exhaust
terminals. Temperature control is provided by
measuring the room temperature and controlling the
position of the reheat valve and adjusting the airflow.
The LRC operates as an independent, stand-alone
DDC controller and can be connected on the Floor
Level Network (FLN) with the APOGEE Automation
System. This extends the benefits of DDC to all of the
building’s HVAC equipment. This approach to lab room
control includes the following features.
Features
• Closed loop PID control of HVAC systems to
maintain tighter air volume and temperature
control
• Control sequences for both single duct and dual
duct supply system applications
• Supports the use of wall switch input to change
from occupied to unoccupied mode for increased
energy savings
• Optional room pressurization alarm output to
notify laboratory occupants,
• Reports airflow directly in actual cfm (lps)
• On-line, convenient HVAC diagnostics through
communication with a Portable Operator’s
Terminal at the room sensor or any field panel