Emerson 3000 manual Temperature Setpoint 65 to 85F 18-29C, Product

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The optional Advanced control processor shall be microprocessor based with a front monitor dot matrix display panel and control keys for user inputs. The controls shall be menu driven with on-screen prompts for easy user operation. The system shall allow user review and programming of temperature and humidity setpoints, alarm parameters, and setup selections including choice of control type. A password shall be required to make system changes. For all user selections, the range of acceptable input (temperature, humidity, or time delay) shall be dis- played on the monitor screen. The system shall pro- vide monitoring of room conditions, operational status in % of each function, component run times, date and time, and four analog inputs from sensors provided by others.

Control

The control system shall allow programming of the following room conditions:

Temperature Setpoint 65 to 85°F (18-29°C)

Temperature Sensitivity +1 to +9.9°F (0.6 to 5.6°C) in 0.1° increments

Humidity Setpoint 20 to 80% RH Humidity Sensitivity +1 to +30% RH

All setpoints shall be adjustable from the individual unit front monitor panel.

Temperature and Humidity Sensors shall be capable of being calibrated using the front monitor panel con- trols to coordinate with other temperature and humidity sensors in the room.

Predictive Humidity Control

The microprocessor shall calculate the moisture con- tent in the room and prevent unnecessary humidifi- cation and dehumidification cycles by responding to changes in dew point temperature.

Compressor Short-Cycle Control

The control system shall include a program to pre- vent compressor short-cycling.

System Auto-Restart

For start-up after power failure, the system shall provide automatic restart with a programmable (up to 9.9 minutes in 6-second increments) time delay. Programming can be performed either at the unit or from the central site monitoring system.

Sequential Load Activation

During start-up, or after power failure, the micropro- cessor shall sequence operational load activation to minimize inrush current. Systems allowing multiple loads to start simultaneously are unacceptable.

Chilled Water/Hot Water/Econ-O-Coil Flush Cycles

Chilled water, hot water, and Econ-O-Cool coils shall be automatically flushed to prevent the buildup of contaminants. Systems without this feature shall include the necessary devices to bypass fluid into the coil on a programmed basis.

Front Monitor Display Panel

The microprocessor shall provide a front monitor 240 x 120 dot matrix display panel with adjustable back- lighting. This display (along with five front mounted control keys) shall be the only operator interface required to obtain all available system information such as room conditions, operational status, graphi- cal data, alarms, control and alarm setpoints, and all user selections including alarm delays, sensor cali- bration, DIP switch selections, and diagnostics. All indicators shall be in language form. No symbols or codes shall be acceptable.

Alarms

The microprocessor shall activate an audible and visual alarm in event of any of the following condi- tions:

High Temperature

Low Temperature High Humidity Low Humidity Short Cycle

Compressor Overload (Optional)

Main Fan Overload (Optional) Humidifier Problem

High Head Pressure Change Filter Loss of Air Flow Low Suction Pressure Loss of Power Custom Alarm (#1 to #4)

Custom alarms are four customer accessible alarm inputs to be indicated on the front panel. Custom alarms can be identified with prepared (pro- grammed) alarm labels for the following frequently used inputs:

Water Under Floor Smoke Detected Standby GC Pump On Loss of Water Flow Standby Unit On

User-customized text can be entered for all four cus- tom alarms. Each alarm (unit and custom) can be separately enabled or disabled, selected to activate the common alarm, and programmed for a time delay of 0 to 255 seconds.

Audible Alarm

The audible alarm shall annunciate any alarm that is enabled by the operator.

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