dixell Ichill 260L_D DUO, User Manual

Page: 8 / 149

1592015820 User Manual IC200L/D DUO rel 1.0
Pag. 8 of 149
1. GENERAL FEATURES
IC260L_D/261L_D is an electronic controller for chiller unit applications having one or two circuits:
 Air/air

Air/water

Water/water
 Condensing unit
Additional features :

Heat pump with gas reversibility
1.1 MAIN FUNCTION
Chiller management:
 One circuit up to 4 compressors

Double circuit up to 6 compressors
 Screw compressors
Compressor start up:
 Direct
 Part winding
 Star - delta
Capacity step control:

Continuous control
 Step control
 Modulation control (screw compressors)
Regulation of the compressors
 Working hour trade-off

Start-up trade-off
Management of two pump groups
 2 pumps evaporator side
 2 pumps condenser side
Pump down management

With dedicated pressure switch
 Low pressure switch
 Low pressure transducer
Unloading circuit
 High temperature of the evaporator inlet water

High temperature of the condenser inlet water (unit with recovery)

High condensing pressure
 Low evaporating pressure
Maintenance messages
 Compressors
 Evaporator pumps

Condenser pumps
Auxiliary relays
 It is possible to configure two relays with indipendent regulation
Weekly Energy saving
 Three different time bands per day (only if RTC onboard)

Energy saving enabled by digital input
Weekly ON/OFF:
 Three different time bands per day (only if RTC onboard)
Dynamic setpoint:
 It is possible to modify the set point according to outside temperature or a dedicated 4..20mA probe
Change over :

Automatic operative mode selection (chiller / heat pump) maccording to outside temperature
Defrost management:
 Combined control temperature / pressure