ACPSB-P/ACPSE-P – Falcon Rooftop Units

Cooling Capacity from 29 to 1438 MBH (9-422kW)
Heating Capacity from 27 to 1260 MBH (8 to 369 kW)

The ACPSB-P /ACPSE-P features:

• Quiet & High Efficiency Scroll Compressors
• Rigid and Custom Build Design for Outdoor Application
• Optional Economizer Section, Heat-Pump & Heaters
• Optional Inverter Compressor
• Green Refrigerants

The Dunham Bush Falcon ACPSB-P / ACPSE-P Series represents the ultimate solution in spatial and operational simplicity for large commercial buildings. In traditional setups, establishing a central air conditioning network requires complex interior plant rooms packed with chillers, water pumps, and extensive hydronic pipe pathways. The Falcon rooftop unit eliminates this interior footprint entirely by combining the compressor loop, air-cooled condenser coil, evaporator assembly, and heavy-duty supply blower into a single, pre-charged outdoor mechanical enclosure.

The core of the Falcon unit is built around reliable, hermetic scroll compressors featuring a non-contact design. By eliminating physical contact across the primary compression spirals, the machine drastically limits internal friction, boosts volumetric efficiency, and reduces vibration. On models from 250P and above, multiple compressors are arranged in independent staging networks. This allows the system to match real-time building thermal changes smoothly, preventing energy-wasting electrical cycles during partial loads or off-peak shifts.

To ensure long-term outdoor survival in harsh environments, the casing is constructed from heavy-gauge galvanized steel panels finished with baked epoxy powder paint, delivering exceptional corrosion protection against intense UV rays and tropical monsoons. Air delivery is handled by massive, AMCA-certified double-inlet double-width (DIDW) centrifugal blowers. Backed by adjustable belt-drive systems, these blowers push conditioned air through extensive duct runs, while the interior evaporator chamber is lined with high-density Linacoustic fiberglass to isolate motor sounds from the building below.

Key Technical Highlight Matrix

Core Functions of the Dunham Bush Falcon Packaged Units

• All-In-One Outdoor Comfort Control: Performs complete air filtration, cooling, dehumidification, and optional winter heating inside a single outdoor container, saving valuable interior floor space.

• High-Static Variable Air Delivery: Belt-driven fan packages allow engineers to adjust pulley ratios on site. This matches the fan speed to the specific pressure drop of your sheet metal ductwork, ensuring uniform air spread.

• Integral Sub-Cooling Circuitry: Features built-in sub-cooling lines woven directly into the staggered $3/8\text{ inch}$ inner-groove copper tube condenser grid. This design maximizes refrigeration capacity without consuming extra electricity.

• Proactive System Fail-Safes: Incorporates manual-reset high/low pressure cutouts, internal motor winding thermal protection, and suction line accumulators to safeguard the scroll mechanisms from liquid slugging during reverse cycles.

Strategic Importance Across Bangladesh

1. Government Institutes, Public Works & Logistics Hubs

State projects—including public university auditoriums, regional food storage depots, central data archives, and state-run telecommunication exchange offices—need deep, high-volume air distribution that requires minimal day-to-day oversight.

• Saves Premium Floor Space: By sitting completely outside on the roof or an adjacent ground slab, the Falcon unit clears interior floor space for productive public services.

• Simplified Single-Point Installation: Requires zero on-site refrigerant piping or complex water loops. The installation crew simply positions the unit, connects the main electrical supply lines, and hooks up the air ducts.

2. Private Sector Garments (RMG), Warehouses & Supermarkets

For Bangladesh's massive ready-made garment (RMG) processing floors, automated print shops, modern supermarkets, and pharmaceutical clean-storage facilities, climate stability is a business-critical asset.

• Massive Ventilation Performance for Sewing Floors: High-density worker floors generate massive heat. The high external static pressure capability of the Falcon series allows it to push massive columns of filtered air through extensive ducting, maintaining an active, comfortable workspace.

• No Total Operation Shutdowns: Thanks to its multi-compressor design, if one circuit undergoes routine maintenance or filter changes, the remaining circuits continue to run at partial capacity. Your commercial facility never suffers a total cooling blackout.

Why Buy From Bhai Bhai Engineering?

Procuring an authentic, large-tonnage rooftop packaged central AC system requires a qualified engineering partner. Bhai Bhai Engineering delivers end-to-end industrial HVAC support across Bangladesh:

• Verified Authentic OEM Imports: We import directly from authorized global Dunham Bush production tracks, providing brand-new equipment complete with verified factory certificates and clear serial numbers.

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

• Straightforward Local BDT Estimating: Avoid surprise sops, port processing fees, or hidden surcharges. We provide clean, comprehensive financial proposals in Bangladeshi Taka (BDT) structured for corporate boards or government procurement profiles.

• Unrivaled Local Spare Parts Access: From original expansion valves and contactors to replacement blower belts and microprocessor components, we maintain local support to keep your business running seamlessly.

Contact Us for a Quotation

Optimize your industrial property with elite, space-saving rooftop cooling technology. Contact our project sales engineering desk in Dhaka today to get a detailed commercial proposal and technical product data sheets based on your specific layout configurations.

• 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 main advantage of a rooftop packaged unit compared to a central chiller system?

Ans: A rooftop packaged unit is completely self-contained and air-cooled. It removes the need for an indoor chiller room, large water pumps, cooling towers, and extensive water piping. This lowers initial equipment costs, simplifies installation, and reduces regular maintenance checks.

Q2: How does the Falcon series perform during intense Bangladeshi summers?

Ans: The ACPSB-P / ACPSE-P units are built using heavy-duty Class F insulated fan motors and robust condenser surfaces with integral sub-cooling. For specialized operations facing extreme rooftop heat, we can also provide the specialized high-ambient ACPSH variant, designed to run smoothly in ambient temperatures up to $125^\circ\text{F}$ ($52^\circ\text{C}$).

Q3: Can these rooftop units handle fresh air intake for factory ventilation?

Ans: Yes. The Falcon series can be ordered with optional economizer packages and fresh air intake hoods. This allows your facility to introduce filtered outside air into the workspace to comply with international factory safety regulations and maintain high indoor air quality.

Q4: How does the system handle rust from high humidity and coastal salt air?

Ans: The outer panels are constructed from heavy galvanized steel treated with high-grade baked epoxy powder paint. For projects located in aggressive coastal or industrial chemical zones, Bhai Bhai Engineering can provide optional hydrophilic or copper-finned condenser coils to maximize corrosion resistance.