Eagle Air Cooled Split System (High Ambient)
– ACCSH (Outdoor)
– ECS3 / ESCS3 (Indoor)

Cooling Capacity from 65 to 1753 MBH (20 to 514 kW)

The ACCSH features:

• Quiet & High Efficiency Scroll Compressors
• Able to Operate up to 125°F (52°C) Ambient Temperature
• Versatile Applications
• Rigid Compact Casing
• Green Refrigerants

The ECS3/ESCS3 features:

• Modular Industrial Construction
• Rugged Structural Design
• Double skinned panel with PU insulation
• Wide choice of accessories and design flexibility

The Dunham Bush Eagle High Ambient Split System (ACCSH paired with ECS3 / ESCS3) is engineered to conquer the toughest challenge in tropical HVAC design: maintaining reliable indoor cooling when the outdoor rooftop temperature matches or exceeds 40°C. Standard commercial split systems often suffer from soaring head pressures, high power consumption, and frequent thermal safety trips during brutal Bangladeshi summer months. The Eagle ACCSH system overcomes this by utilizing an oversized heat rejection profile and specialized high-temperature internal components, ensuring non-stop operation even under direct sunlight up to 52°C.

The heart of the ACCSH outdoor unit is built around specially tropicalized, premium hermetic scroll compressors. Operating on a smooth, non-contact orbiting spiral profile, mechanical friction is drastically minimized, which lowers vibration signatures and significantly extends the equipment's operational lifespan. For larger configurations, these compressors are arranged in a staged multi-circuit layout. This allows the system to scale down its power usage elegantly during evening hours or winter seasons when the building's thermal load drops, protecting businesses from high electricity bills.

The indoor side features the ECS3 or ESCS3 premium air handling family. These units utilize advanced double-skin panel construction, sandwiching high-density polyurethane insulation between two rigid steel sheets. This design completely eliminates sweat or external condensation forming on the unit panels while absorbing high-frequency mechanical fan hums. The airside assembly features powerful centrifugal blowers that push conditioned air smoothly through extensive duct runs, making it an incredibly flexible, long-lasting industrial climate control plant.

Key Technical Highlight Matrix

Core Functions of the Dunham Bush Eagle High Ambient System

• Continuous High-Ambient Heat Dissipation: Uses an oversized condenser coil matrix with built-in sub-cooling lines to stabilize internal operating pressures, ensuring the system delivers full cooling power during peak summer heat waves.

• Double-Skin Thermal Air Isolation: The ECS3 / ESCS3 indoor air handlers feature airtight double-skin casing that isolates the cold indoor air stream, preventing panel sweating in high-humidity indoor spaces.

• High-Static Variable Air Delivery: Backed by heavy-duty, belt-driven centrifugal fans with adjustable pulleys, the system easily overcomes the friction of long sheet metal duct runs to deliver uniform temperatures.

• Advanced Microprocessor Safety Shielding: Continuously tracks suction/discharge parameters, phase alignment, and compressor thermal limits, pausing operations before a grid voltage drop can damage the motor windings.

Strategic Importance Across Bangladesh

1. Government Institutes, Public Works & Critical Infrastructure

State infrastructure—including central public sector data centers, national research laboratories, defense communication installations, and government archive vaults—demands non-stop climate control that cannot fail during extreme weather events.

• Guaranteed Performance During Heat Domes: The 52°C rating ensures critical public servers and records remain perfectly cool, even when local urban microclimates face extreme summer temperatures.

• Flexible Indoor-Outdoor Split Separation: Isolates heavy compressor noise on the roof while placing space-saving, quiet air handlers directly near the indoor cooling zones, keeping internal working areas quiet.

2. Private Sector Manufacturing, RMG Industrial Complexes & Labs

For Bangladesh’s export-driven Ready-Made Garment (RMG) factories, textile print shops, automated packaging lines, and private diagnostic centers, climate stability directly affects worker output and product safety.

• Combines High Internal Heat and Rooftop Sun Loads: Industrial rooftops generate intense heat from both direct sunlight and internal machinery. The ACCSH handles these dual thermal loads easily, keeping worker production lines comfortable and maintaining steady output.

• Clean Room Air Purity Maintenance: The premium ECS3/ESCS3 indoor units feature airtight dual-skin panels that prevent external fiberglass fibers or insulation dust from entering the air stream, making them ideal for high-spec pharmaceutical or cleanroom spaces.

Why Buy From Bhai Bhai Engineering?

Procuring an authentic, high-ambient central ducted split system requires an experienced engineering partner. Bhai Bhai Engineering delivers professional industrial HVAC services across Bangladesh:

• Verified Authentic OEM Imports: We partner directly with global Dunham Bush production facilities, ensuring your project receives 100% genuine, brand-new equipment complete with verified factory certificates and clear serial numbers.

• Turnkey Engineering & Duct Fabrication: Our experienced in-house technical team designs, fabricates, and balances your complete air delivery system, ensuring correct static pressures and zero air leaks.

• Transparent Local BDT Pricing: Avoid unexpected financial surprises from shifting import duties or logistics. We offer transparent commercial quotes in Bangladeshi Taka (BDT) structured for corporate boards or government procurement profiles.

• Long-Term Local Parts & Service Support: We maintain local stocks of high-ambient scroll components, original microprocessor modules, contactors, and fan belts to protect your operations from costly downtime.

Contact Us for a Quotation

Protect your commercial or industrial property against extreme tropical heat waves with elite ducted split cooling technology. Contact our specialized project sales engineering desk in Dhaka today to receive a detailed commercial proposal and technical data sheets tailored to your facility's specific load requirements.

• Corporate Headquarters: Podirdia, Khilbarirtek, Vatera, Dhaka-1212. (Nur-E-Madina Mosjid Complex)

• Sales & Project WhatsApp: +8801722039029

• Corporate Mailbox: bhaibhaiengineering51@gmail.com

• Engineering Portal: https://www.bhaibhaiengineering.com/

Frequently Asked Questions (FAQs)

Q1: What is the benefit of the ECS3 / ESCS3 "Double-Skin" indoor air handler?

Ans: Traditional single-skin air handlers often sweat or leak water drops down onto false ceilings when operating in high-humidity environments like Bangladesh. The ECS3/ESCS3 units use a double-skin panel design with polyurethane insulation trapped between two steel walls. This completely eliminates panel sweating, prevents insulation fibers from entering the air stream, and reduces fan noise.

Q2: Can the ACCSH high-ambient outdoor unit be installed far away from the indoor air handler?

Ans: Yes. As a split system, the ACCSH outdoor unit can be positioned on a rooftop or an outdoor ground pad while the ECS3/ESCS3 indoor unit sits directly inside the room or a ceiling void. Our engineering team at Bhai Bhai Engineering will calculate the correct copper pipe sizing and oil traps based on your specific vertical and horizontal installation distances.

Q3: How does the high-ambient version differ from a standard commercial split system?

Ans: Standard commercial split ACs often face high discharge pressure faults and automatically shut down when the outdoor temperature hits 40°C to 43°C. The Dunham Bush ACCSH high-ambient system is custom-engineered with oversized condenser surfaces, heavy-duty fan motors, and tropicalized scroll compressors rated to run continuously in ambient temperatures up to 52°C (125°F).

Q4: Does this system include protection against local voltage and phase fluctuations?

Ans: Yes. The Dunham Bush Eagle series features integrated high/low-pressure safety cutouts and motor thermal protection lines. Additionally, when installed by Bhai Bhai Engineering, we integrate specialized phase-failure and voltage monitoring relays to safeguard the scroll motors against local grid power sags or phase reversals.