Obsidian

The Obsidian series delivers exceptional resilience through high-specification components and thoughtful engineering. Each unit features corrosion-protected, oversized condensers, a sealed and pressurised buffer tank with automatic air bleeders, and a factory-installed bypass circuit for hydraulic flexibility. The dust-proof electrical housing and voltage-separated control system enhance safety and longevity in dusty or remote environments. Designed for simplicity and performance, the Obsidian range includes an automatic make-up water system to maintain operational continuity. Every unit undergoes comprehensive factory testing and is backed by a 3-year warranty, making the Obsidian series the go-to choice for mission-critical cooling in demanding ambient conditions.

The Obsidian series from Aqua Chiller is a high ambient range of outdoor chillers, with capacities from 11.9 kW to 156 kW, purpose-built to withstand Australia’s harshest climates. Designed for durability and reliability, these units utilise R134a refrigerant and oversized, coated condensers to ensure consistent performance in extreme conditions. With rugged construction, dust-resistant housing, and a high ambient cooling rating, the Obsidian range is the dependable solution for critical cooling in the toughest outdoor environments.

Build & Performance Features

Capacity range from 11.9 kW to 156 kW, with larger sizes available on request
High ambient design, rated to perform at 7°C chilled water supply with 45°C ambient
Advanced outdoor chiller series, built for demanding Australian conditions
European-built with high-spec componentry
Scroll compressor technology for efficient and quiet operation
High-efficiency brazed plate evaporator to reduce refrigerant charge
Equipped with a thermostatic expansion valve for precise refrigerant flow
Internal stainless steel circulation pump, 4 bar pressure
Sealed and pressurised stainless steel water tank, thermally insulated, with auto air bleeders
Bypass loop with gate valve, adjustable from outside the unit
Non-corrosive piping materials for long service life
Carel µChiller controller with APPLICA NFC mobile connectivity
Optional Modbus capability and remote control panel
Built-in fan speed control for optimised performance in variable conditions
Tested under real-world load conditions prior to shipment

Design Features

Galvanised steel frame with durable polyester powder coating
Heavy-duty adjustable feet for stability and levelling
Convenient pressure gauges for water pressure and refrigerant pressures
Dustproof housing on electrical boxes and internal components for extended component life

Safety Features

Flow switch, high and low pressure protection
Thermal overload protection on motors
Phase sequence, fail, and frequency protection
Anti-freeze alarm to protect evaporator
Remote on/off contact and alarm output contact
Voltage separation between control and component circuits for safety

All Aqua Chiller units are tested throughout the manufacturing process followed by a substantial and comprehensive test upon completion. Coupled with the world’s most trusted component brands. Aqua Chiller’s products are designed and built to last.

Specifications

Model Code	Cooling Capacity (kW)	Combine Power Input (kW)	Power Supply (V. Ph. Hz)	Refrigerant Type	Fan Type	Compressor Type	Tank Volume (L)	Pump Pressure (bar)	Flow Rate (m3/h)	Controller	Dimensions (mm)	Dry Weight (kg)
AC-OBS-VPA-H-150-TP	11.9	6.65	415/3/50	R134a	Axial (Ø50)	Scroll	60	4 bars	2.0	Carel µChiller	900 x 1000 x 1620	310
AC-OBS-VSCA-H-245-TP	19.8	9.6	415/3/50	R134a	Axial (Ø45)	Scroll	100	4 bars	3.4	Carel µChiller	1000 x 1400 x 1840	470
AC-OBS-VSCA-H-390-TP	31.4	15.5	415/3/50	R134a	Axial (Ø63)	Scroll	200	4 bars	5.4	Carel µChiller	1060 x 1660 x 2110	620
AC-OBS-VSCA-H-500-TP	40.4	20.4	415/3/50	R134a	Axial (Ø50)	Scroll	250	4 bars	6.9	Carel µChiller	950 x 2450 x 2010	760
AC-OBS-VSCA-H-590-TP	47.8	23.1	415/3/50	R134a	Axial (Ø80)	Scroll	250	4 bars	8.2	Carel µChiller	1080 x 2450 x 2200	900
AC-OBS-VSCA-H-780-TP	62.6	32.7	415/3/50	R134a	Axial (Ø80)	Scroll	300	4 bars	10.8	Carel µChiller	1080 x 3100 x 2200	980
AC-OBS-VSCA-H-970-TP	78.0	40.1	415/3/50	R134a	Axial (Ø80)	Scroll	300	4 bars	13.4	Carel µChiller	1130 x 2710 x 2500	1200
AC-OBS-VSCA-H-1220-TP	100.0	47.35	415/3/50	R134a	Axial (Ø80)	Scroll	500	4 bars	17.4	Carel µChiller	1130 x 3900 x 2600	1720
AC-OBS-VSCA-H-1560/2-TP	125.2	63.4	415/3/50	R134a	Axial (Ø80)	Scroll	500	4 bars	21.5	Carel µChiller	2200 x 3100 x 2310	2000
AC-OBS-VSCA-H-1940/2-TP	156.0	77.7	415/3/50	R134a	Axial (Ø80)	Scroll	500	4 bars	26.8	Carel µChiller	2200 x 3250 x 2550	2500

Notes

Nominal cooling capacity is calculated with 7’C chilled-water supply and 45’C inlet cooling air temperature at system flow rate and pressure
Recommended temperature range of chilled fluid: 3’C and 25’C. Use of glycol recommended for set points under 6’C.
Temperature difference between inlet and outlet chilled fluid between 4’C and 7’C. Contact us for temperature splits outside of this range
All figures are at the rating point of 7c supply in 35c ambient.
We recommend the use of R134a when ambient temperatures are expected to reach 42’C+

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Onsite commissioning included in metro areas only. Additional travel fees apply for areas outside of metro regions and will be specified on quotation.
3 year warranty valid when unit installed to our specifications verified by Aqua Chiller commissioning visit. 6 month maintenances must be completed and logged on our website by qualified personel. Annual water treatment and filter changes must occur with proof provided. Aqua Chiller can offer install and maintenance packages to suit.