Emerson Liebert DS Bedienungsanleitung PDF herunterladen (Seite 26)

Guide Specifications

2.6.2 Evaporator Coil

The evaporator coil shall be A-frame design with off-

set orientation and have ____sq. ft. (m

) face area,

three rows deep. It shall be constructed of rifled cop-

per tubes and aluminum fins and have a maximum

face velocity of ____ ft. per minute (m/s) at ____ CFM

(CMH). A stainless steel condensate drain pan shall

be provided.

2.6.2.1 Polymeric Coating (Optional)

The coil shall be coated with a high performance poly-

meric coating process to provide corrosion resistance

within 2 to 12 pH range.

2.6.3 R-22 Refrigerant

The system shall be designed for use with R-22

refrigerant.

2.6.3 R-407C Refrigerant

The system shall be designed for use with R-407C

refrigerant, which meets the EPA clean air act for

phase-out of HCFC refrigerants.

2.7 iCOM

™

Microprocessor Control

With Small Graphic Display

The iCOM unit control shall be factory-set for

Intelligent Control which uses “fuzzy logic” and

“expert systems” methods. Proportional and Tunable

PID shall also be user selectable options. Internal

unit component control shall include the following:

Compressor Short Cycle Control - Prevents

compressor short-cycling and needless compres-

sor wear.

System Auto Restart - The auto restart fea-

ture will automatically restart the system after a

power failure. Time delay is programmable.

Sequential Load Activation - On initial star-

tup or restart after power failure, each opera-

tional load is sequenced with a minimum of one

second delay to minimize total inrush current.

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

water reheat coils and Econ-O-Coils are periodi-

cally flushed to prevent a buildup of contami-

nants.

Predictive Humidity Control - calculates the

moisture content in the room and prevents

unnecessary humidification and dehumidifica-

tion cycles by responding to changes in dew

point temperature.

The iCOM control shall be compatible with all

Liebert remote monitoring and control devices.

Options are available for BMS interface via MODbus,

Jbus, BACNet, Profibus and SNMP.

The iCOM control processor shall be microprocessor

based with a 128x64 dot matrix graphic front monitor

display and control keys for user inputs mounted in

an ergonomic, aesthetically pleasing housing. The

display & housing shall be viewable while the unit

panels are open or closed. The controls shall be menu

driven. The display shall be organized into three

main sections: User Menus, Service Menus and

Advanced Menus. The system shall display user

menus for: active alarms, event log, graphic data,

unit view/status overview (including the monitoring

of room conditions, operational status in % of each

function, date and time), total run hours, various

sensors, display setup and service contacts. A

password shall be required to make system changes

within the service menus. Service menus shall

include: setpoints, standby settings (lead/lag), timers/

sleep mode, alarm setup, sensor calibration,

maintenance/wellness settings, options setup,

system/network setup, auxiliary boards and

diagnostics/service mode. A password shall be

required to access the advanced menus which include

the factory settings and password menus.

The User Menus Shall be Defined as Follows:

Active Alarms: Unit memory shall hold the 200

most recent alarms with time and date stamp for

each alarm.

Event Log: Unit memory shall hold the 400 most

recent events with id number, time and date stamp

for each event.

Graphic Data View: Eight graphic records shall be

available: return air temperature, return air humid-

ity, supply air temperature, outdoor temperature and

four custom graphs.

Unit View - Status Overview: Simple or Graphical

“Unit View” summary displays shall include temper-

ature and humidity values, active functions (and per-

cent of operation) and any alarms of the host unit.

Total Run Hours: Menu shall display accumulative

component operating hours for major components

including compressors, Econ-O-Coil (FC), fan motor,

humidifier and reheat.

Various Sensors: Menu shall allow setup and dis-

play of optional custom sensors. The control shall

include four customer accessible analog inputs for

sensors provided by others. The analog inputs shall

accept a 4 to 20 mA signal. The user shall be able to

change the input to 0 to 5VDC or 0 to 10VDC if

desired. The gains for each analog input shall be pro-

grammable from the front display. The analog inputs

shall be able to be monitored from the front display.

Display Setup: Customer shall pre-select the

desired grouping of display languages at the time of

the order from the following choices:

Group 1: English, French, Italian, Spanish,

German

Group 2: English, Russian, Greek

Group 3: English, Japanese, Chinese, Arabic

Service Contacts: Menu shall allow display of local

service contact name and phone number.

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 32

Kommentare zu diesen Handbüchern

Keine Kommentare

Emerson Liebert DS Bedienungsanleitung Seite 26

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Luftentfeuchter Emerson Liebert DS