These ASR air cooled screw water chillers offer the ultimate combination of energy saving design, superior engineering features and flexibility of application as required by today’s market.
Designed to conform to confirm AHRI standard 550/590 (Water chilling packages using the vapor compression cycle.)
ANSI / ASHRAE 15-1994 (Safety code for Mechanical Refrigeration)
ASHRAE 90-1 (EER in Full Load)
Operating wide range of ambient temperatures 32F (O C ) to 130F (55 C)
Excellent serviceability and Compact Size.
Completely wired control panel with Latest advanced microprocessor controller.
Incorporated with compact water coolers.
Semi-hermetic compact screw compressors with part winding start
Single point power connection to minimize installation cost and time.
Step less capacity control system as standard for very accurate response to load requirements and best part load efficiency
The evaporators are shell and tube direct expansion type with removable heads ,the header, tube sheet, shell, refrigerant and water connections are made of carbon steel.
Brazed Plate Heat Exchangers
Electronics Expansion valve
Designed for GCC. India and Singapore Energy Ratings standard
Low noise condenser fans, all fans are die cast aluminum propeller type with aerodynamic design, top discharge, provided with protective grille mounted on top panel within the unit casing class and ”F” winding insulation for high ambient application.
Quality assurance according to ISO9001 , Which guarantees high and Constant product quality
Single point power connection to minimize installation cost and time.
Independent refrigeration circuit per compressor
Suction, Discharge, Liquid pipes are all hard copper pipes and minimize pipe brazed joints
The control panel design is equivalent to NEMA 4 (IP55) with hinged door for easy access ensuring dust and weatherproof construction.
Crankcase Heater
Unit On/Off Switch
Condenser Fan Motor Circuit Breaker
Compressor Circuit Breaker
Microprocessor
These chillers incorporate the newest advanced microprocessor controller. This controller monitors analog and digital inputs to achieve precise control & protective functions of the air cooled water chiller units.
Electronic expansion valve control,
Step / Stepless control,
Adaptive control algorithm,
Economizer control,
Hot gas bypass management,
Compressors hour equalization,
Software update through PC programming or hardware key,
Suction temperature sensor,
Discharge temperature sensor,
Suction pressure transducer,
Discharge pressure transducer,
Suction pressure limitation algorithm,
Head pressure control by fan cycling,
Short cycling protection for compressors (time delay),
Compressor locking option through parameter or digital input
Pump management up to 2 pumps,
Maximum demand control in emergency mode
System Protection & Alarms
Low suction pressure
High discharge pressure(through pressure switch and transducer)
Anti freeze protection
Flow switch alarm;
Serial communication alarm;
Sensor alarm management;
Pump alarm management;
Power supply alarm;
Serial communication alarm with remote controller;
Compressor circuit breaker trip alarm;
Compressor winding temp alarm;
Compressor pump down alarm;
Compressor no run alarm;
EEV board communication alarm;
Programmable auxiliary alarm;
High discharge temperature alarm;
High superheat alarm;
Low superheat alarm;
EEV winding alarm for troubleshooting
Data Display
Suction and discharge pressure,
Suction and discharge temperatures,
Compressor status,
Fan status,
Liquid line solenoid status,
Run time of each compressor,
Super heat,
Alarm history with time stamp,
The Leaving or Return water temperature is continuously displayed on the 3 digit LED display
Compressor pump down alarm;
Compressor no run alarm;
EEV board communication alarm;
Programmable auxiliary alarm;
High discharge temperature alarm;
High superheat alarm;
Low superheat alarm;
EEV winding alarm for troubleshooting
Standard Features
High Efficiency Totally Enclosed Air Over Type Condenser Fan motor – Class “F” Insulation up to 70C Ambient Temp
Quality assurance according to ISO9001 , Which guarantees high and Constant product quality
Internal Over load Protection – Compressor, Condenser Fan Motor
Moisture Indicator, Filter Drier ,Access valve
Copper tubes and aluminium fins coils.
Integral sub-cooling circuit provided to increase overall unit efficiency.
Condenser coil Guard
Micro Processor Based Controller
Heating and Cooling Application single stage or Dual stage
Digital Thermostat With 7days Programmable memory
Lead and Lag the compressor for even compressor
Time Equalization Of Compressors with time delay for second compressor
Compressor Trip Indication with Lock out
Compatible with BMS (Building management System)
Compatible with BMS (Building management System)
Auto /Manual Reset of the signals
Standard Features
Quiet, reliable performance
Optimum heat transfer efficiency
Casings designed to provide easy accessibility for water coil and unit fan deck.
Compact design
Low profile
Low sound power level
For ducted & Ducts free applications
Water coils 3/8” Copper Tubes with Aluminum Fins
3 speed Permanent split capacitor motors
Easy maintenance
Easy installation
External terminal box
Drain pan painted galvanized sheet metal
0.5″ Thick Aluminum Mesh Filter
Coil Row, Connection Side (RH & LH)
2 pipe system 2,3,& 4 row cooling
4 pipe system 2,3 row cooling, 1 row hot water coil
Casing painted Finish
Drain Pan
GI/ increment in length 250mm
Optional Features:
Copper tube & copper fin
Copper tube & Phenolic Coating Aluminum Fins
Stainless steel drip tray
Fan motor upgrade for high ESP
Hot Water coil
Electrical heating
Stainless steel casing
Drip Eliminators
To avoid water carry-over in humid areas or when the velocity of air across the cooling coils is high.
Variable Frequency Drives
Suitable to use Variable air volume (VAV)
Blower Motor
Fan motors are totally enclosed, fan cooled (TEFC) –IE2 (Std), Optional IE3,
Motors are of IP55
Class “F“ insulation
Optional Motors
Explosion Proof motors
Two speed motors
Stand by motors
Plenum Section
Empty sections can be provided upon request as an access
Bulk Head Light
Optional in different sections like fan section or filter section
Heat Recovery System
Energy Recovery Wheel
Run around coils
Plate Heat Exchanger
Heat Pipe System
Electric Heater
Electrical heater with wide range of capacities and steps are available to be supplied built in Schonluft CAH-series Air handling units.
The standard electric heater – Open wire type provided in a standalone section
Optional:
Heaters with UL -control panel.
Finned tubular heater type.
Humidifiers
Diffuser Plates
Sound Attenuators
Dampers
Dampers with opposed blades or parallel blades
Manual or motorized operation
Ultra Violet Light
These lamps are used to inactivate airborne bacterial or
fungal contamination for any application, especially those
that require a very high level of air cleanness like hospitals,
labs, or pharmaceutical applications
AHU Construction:
Designed-in flexibility to adapt to exact requirements
Engineering & Performance features maximizing equipment, life & performance
Factory-made combined blocks of encased individual modules
Assembly on wide range of standard panels (25mm, 50mm and 100 mm).
Penta post heavy gauge corrosion free aluminum profile & PE corner connection , Thermal Bridge Profile (Optional)
The frame construction for ease to disassemble and reassemble the unit sections
Double wall, sandwich type panels
Factory Fabricated Unit Base:
Standard – 80 mm height
Optional – 100,120,150,200 mm heights
Insulation:
Standard – Polyurethane insulation (Puff ) Density 42 kg/m3
Optional – Fiberglass insulation of 48 kg/m3 density& 96 kg/m3 density
Filters:
2” flat filters with Aluminum washable media
2” flat filters with synthetic non – woven media
4” flat filters with Aluminum or synthetic media
Low velocity Filters (V-Filters)
HEPA Filters
Carbon Filters (Chemical Filters)
Bag filters (With 95% filtration efficiency )
Stainless steel filter and Aluminum frames
Visual Indication for filters:
Inclined manometers
Magnehelic Pressure Gauge
Differential pressure switch
Heat Exchange Coils:
Chilled water and direct expansion coils(R410a,R22, R407c, R134a)
Heating coils and Steam Coils
Standard – Aluminum Fins, Optional – Copper and Coated Fins
Multi slope Drain Pan to facilitate draining and venting.
316L Stainless steel coils casing
Utilizing the full available unit cross section area
Standard Features
Coil guard protection
External service valve with gauge ports
Heating and Cooling Application single stage or Dual stage
Digital Thermostat
Anti-recycle timer
Compressor lock out function
Lead and Lag the compressor for multi compressors
High Pressure & Low pressure protection
Auto /Manual Reset of the signals
Time Equalization Of Compressors (Multi compressors)
Time delay for second compressor (Multi compressors)
Optional Features
Compressor Circuit Breakers
Pressure Gauges
Condenser Coil Guard
Filter Synthetic media
Adjustable High, Low Pressure Switch
Head Pressure Control (Mild Ambient Control)
Suction, Discharge Roto lock-Service Valve for Compressor
Muffler
Replaceable Filter Drier with mechanical shut of valve
Condenser Pressure Relief Valve
Stainless Steel Drain Pan
Duct Sensor
Dirty Filter Indication
Adjustable Speed Pulley
Copper and Phenolic Coated Aluminium fins
Standard Features
Wide range of capacity and flexibility that can suitable to use , group of rooms with conditioned air, providing the ultimate individual comfort for each zone.
R410a Environmental friendly Refrigerant
High EER 11 and above in AHRI condition
Comply with AHRI210/240/340/360 Standard and ASHRAE 90.1.
Easy installation, and low noise operation
Easy maintenance, and service accessibility to the compressor and all components
High Energy Efficiency Ratio (EER)
Single &Dual Compressor
Totally Enclosed Air Over Type Condenser Fan motor – Class “F” Insulation up to 70C Ambient Temp
