Introduction; Standard Features; Operational Features - Data Aire Mini dap4 Installation, Operation & Maintenance Manual

1.0

INTRODUCTION

The Mini dap4 continues the tradition of advanced electronic devices from Data Aire for monitoring and control of
computer room air conditioning units which began in 1977. Each generation has provided more accurate monitoring
information and flexibility in controlling the unit.
The Mini dap4 offers the definite answer for precision environmental control. The Mini dap4 control system not only
controls and monitors temperature, humidity, airflow and cleanliness, but also provides component run times, alarm
history and an automatic self-test of the microprocessor. All messages are sequentially displayed on a backlit LCD
(liquid crystal display). The Mini dap4 can interface with a variety of building management systems (BMS).
1.1

STANDARD FEATURES

Stand Alone Panel: Service terminals or additional devices are not required for programming or monitoring functions
Microprocessor Based: 32 bit, 44 MHz Micro controller. State-of-the-Art technology and reliability in a program-
mable logic control module
LED Illuminated Keys: Six highly reliable keys allow movement through the menus
Backlit Liquid Crystal Display (LCD): Information is displayed and presented in a format that is easily viewed and
understood
All Settings are Programmable from the Face of the Panel: Expedient and user friendly
Layered and Forward and Backward Menu Access: Facilitates programming with flexible operation
USB Port: Allows download/upload of software
Multi-Level Password Access: Controls any unauthorized changes to settings and system functions
Database of Unit and Room Conditions: Historical data that facilitates service, apparatus set-up and fine tuning of
setpoints
Factory Programmed Menus: Menus that pertain to the type and method of cooling, reheat and humidification
based on the unit's components and options
Programmed Settings and Historical Data are Saved in Flash Memory: Non-volatile memory stored so all control
settings and operational parameters are secured indefinitely even during a power outage
Calibrated Temperature and Humidity Sensors: Accurate and consistent regulation especially in multiple unit ap-
plications
1.2 OPERATIONAL FEATURES (Optional features may require additional components and/or sensors)
Sequential Load Activation: Time and temperature based logic that sequentially starts and stops stages of cooling
and reheat
Compressor Short-Cycle Control: Prevents excessive compressor wear by using restart and anti-cycle limits
Automatic or Manual Restart: Restart methods are programmable in the event of a power failure
Humidity Anticipation: Modifies the humidity setpoint to reduce excess humidification and dehumidification
Dehumidification Mode Lockout: Inhibits dehumidification if not required for system performance
Start Time Delay: Programmable time delay staggers the start-up of multiple units to prevent high power demand peaks
Automatic Compressor Rotation: Periodically rotates the lead/lag compressor sequence to balance run times
4 • Mini dap4 User Manual