Air Cooled Horizontal Screw Chiller
Model: Dunham-Bush Air Cooled Horizontal Screw | Brand: Dunham-Bush
16-model range of air-cooled horizontal screw chillers from 90 to 395 RT with optional micro-channel condenser and twin-compressor redundancy. Rated for 46°C ambient operation.
Quick Specification
- Cooling Capacity90 to 395 RT (317 to 1,389 kW)
- Number of Models16 models
- Compressor TypeHigh Efficiency Horizontal Screw
- CondenserStandard or Optional Micro-channel
- RefrigerantR134a
- Power Supply380–415V / 3Ph / 50Hz
Product Description
The Dunham-Bush Air Cooled Horizontal Screw Chiller is a robust, industrial-grade cooling solution available in 16 models spanning 90 to 395 RT (317 to 1,389 kW). Cooltech Corporation supplies and installs this chiller range across Bangladesh for large-scale industrial, commercial, and institutional projects.
Key design features include single or twin compressor configurations for redundancy and reliability, with each compressor operating on an independent refrigerant circuit — ensuring continued operation even in the event of a single compressor fault. The optional micro-channel condenser improves heat transfer efficiency and reduces system weight.
The chiller's ability to operate up to 46°C ambient temperature makes it one of the most suitable models for Bangladesh's hot and humid tropical climate. AHRI certification and compliance with ASHRAE 90.1 energy standards confirm its suitability for both local and international projects.
Key Features
- ✓ 16 Models: 90 to 395 RT (317 to 1,389 kW)
- ✓ Single or Twin Compressors with Independent Circuits
- ✓ Optional Micro-channel Condenser
- ✓ High Efficiency Horizontal Screw Compressors
- ✓ Operates up to 46°C (115°F) Ambient Temperature
- ✓ Advanced Vision Controller
- ✓ AHRI Certified
- ✓ Meets/Exceeds ASHRAE 90.1 Standards
- ✓ Redundant Compressor Configuration Available
- ✓ Suitable for Bangladesh Tropical Climate
Technical Specifications
Full specification for the Dunham-Bush Air Cooled Horizontal Screw. Contact Cooltech's engineering team for duty-point selection, electrical single-line diagrams, and project-specific documentation.
| Parameter | Specification |
|---|---|
| Cooling Capacity | 90 to 395 RT (317 to 1,389 kW) |
| Number of Models | 16 models |
| Compressor Type | High Efficiency Horizontal Screw |
| Condenser | Standard or Optional Micro-channel |
| Refrigerant | R134a |
| Power Supply | 380–415V / 3Ph / 50Hz |
| EER (Full Load) | 2.8 – 3.0 |
| IPLV | Up to 3.3 |
| Max. Ambient Temperature | 46°C (115°F) |
| Min. Ambient Temperature | –5°C |
| Chilled Water Temperature (In/Out) | 12°C / 7°C (standard) |
| Sound Level | 76 – 85 dBA @ 1m |
| Number of Refrigerant Circuits | 1 or 2 independent circuits |
| Controller | Advanced Vision Controller |
| Certifications | AHRI, ASHRAE 90.1 |
Typical Applications
Why Choose Cooltech Corporation
Authorised Supplier
Official Bangladesh distributor for Dunham-Bush, Zeus, Achelous, and Samsung HVAC equipment.
Full Installation Service
From site survey and load calculation to installation, commissioning, and handover — fully managed.
AMC & Maintenance
Annual Maintenance Contracts available for all supplied equipment with rapid response engineering support.
Expert Engineering Team
ASHRAE-trained engineers available for free consultation on system selection and design.