SKM Packaged Air Conditioners - APMR-G1 Series

High-Efficiency Totally Sealed Scroll Hermetic Compressors

The APMR-G1 Series is powered by totally sealed scroll hermetic compressors the industry standard for commercial packaged AC applications requiring high reliability and continuous-duty performance:

• Hermetically sealed shell – Compressor motor and scroll mechanism enclosed in a welded steel shell, eliminating external shaft seals and minimising refrigerant leak risk over the full operational lifetime
• Scroll compression geometry – Orbiting scroll design provides smooth, continuous compression with minimal internal leakage delivering superior volumetric efficiency compared to reciprocating alternatives
• Low vibration & noise – Smooth rotary compression produces significantly less vibration than piston-type compressors, reducing noise transmission to occupied spaces
• Multiple compressor staging – Larger capacity APMR-G1 models feature multiple compressors for capacity staging, part-load efficiency optimisation, and built-in operational redundancy
• Fewer moving parts – Scroll mechanism simplicity directly translates to higher reliability, longer service intervals, and lower lifetime maintenance costs
• Commercial duty rated – Compressor windings and thermal protection specified for continuous operation at ambient temperatures up to 51.7°C

Heavy-Duty Coils Long-Life Maintenance-Free Design

The APMR-G1 Series condenser and evaporator coils are engineered specifically for long-life, maintenance-free operation in demanding outdoor environments:

• Optimised coil geometry – Fin spacing, tube diameter, and circuit arrangement are all engineered to maximise heat transfer efficiency while minimising fouling and pressure drop over the unit’s service life
• Heavy-duty construction – Coil headers, return bends, and tube walls are dimensioned for long-term mechanical and thermal cycling durability
• Corrosion-resistant materials – Copper tubes with aluminium fins with optional hydrophilic or anti-corrosion coatings for installations in coastal, high-humidity, or industrial environments
• Minimal maintenance requirement – Optimised fin spacing and surface treatment reduces dust accumulation and simplifies periodic cleaning lowering annual maintenance labour and cost
• High ambient coil sizing – Condenser coil surface area generously sized to maintain efficient heat rejection at ambient temperatures up to 51.7°C avoiding efficiency losses common in undersized coils at peak Gulf summer conditions
• Evaporator freeze protection – Evaporator coil circuit design and refrigerant distribution optimised to prevent localised freezing under low-load or low-airflow conditions

Totally Enclosed Class F Insulated Fan Motors

The APMR-G1 Series condenser and evaporator fan motors carry totally enclosed construction and Class F insulation two critical specifications for reliable long-term performance in outdoor commercial installations:

• Totally enclosed motor – Motor windings and internals are fully enclosed within the motor housing, preventing ingress of dust, sand, moisture, and insects essential for outdoor installations in the Gulf, India, and Africa
• Class F insulation – Motor windings insulated to withstand continuous operating temperatures up to 155°C providing a substantial safety margin above the winding temperatures generated during peak Gulf summer operation
• Reduced motor failures – Totally enclosed construction and Class F insulation rating directly reduce the risk of motor burnout, moisture ingress, and insulation breakdown the most common fan motor failure modes in hot and dusty environments
• Long motor service life – Higher insulation class and enclosed construction extend mean time between motor failures, reducing unplanned downtime and replacement costs
• Consistent airflow performance – Robust motor design maintains rated fan speed and airflow consistently across the full ambient operating range ensuring condenser and evaporator performance is not compromised by motor degradation

Wide Ambient Operating Range 10°C to 51.7°C

The APMR-G1 Series is rated for reliable operation across a wide ambient temperature range of 10°C to 51.7°C (50°F to 125°F) covering the full seasonal and geographic range of target markets:

• 51.7°C upper limit – Delivers full AHRI-rated cooling capacity in peak Gulf summer conditions where rooftop and outdoor ambients regularly approach or exceed 50°C
• 10°C lower limit – Reliable operation during cooler seasons and in temperate climate zones no low-pressure tripping or compressor issues during winter operation
• Full capacity across the range – Refrigerant circuit, expansion valve sizing, and compressor selection are all optimised to maintain rated output across the complete operating envelope
• AHRI performance baseline – All capacity and efficiency data referenced to AHRI nominal conditions providing a reliable, independently verified performance benchmark for project specification and energy modelling
• Suitable for diverse markets – Covers the UAE and GCC summer peak, South Asian tropical climates, and African arid and humid zones in a single robust specification

AHRI Certified Performance

The APMR-G1 Series is rated at nominal AHRI conditions providing project engineers, consultants, and specifiers with independently verified performance data:

• AHRI 340/360 – Performance rating standard for commercial and industrial unitary air conditioning and heat pump equipment
• Verified capacity – Cooling capacity stated at AHRI nominal conditions provides a reliable, comparable baseline for equipment selection and energy calculations
• Verified efficiency – EER (Energy Efficiency Ratio) and IEER (Integrated Energy Efficiency Ratio) data verified at AHRI conditions for accurate energy modelling
• Specifier confidence – AHRI-rated performance data is widely accepted by MEP consultants, project engineers, and building authorities for commercial project specifications
• Compliance support – AHRI certification supports compliance with ASHRAE 90.1 energy efficiency requirements and green building rating systems including LEED and Estidama

Applications

The APMR-G1 Series Packaged Air Conditioner is the preferred self-contained cooling solution for a wide range of commercial and industrial environments:

• Commercial Offices – Single or multi-floor offices requiring high-capacity concealed or exposed packaged cooling
• Retail Stores & Supermarkets – Reliable, high-capacity cooling for large retail floor plates with consistent temperature requirements
• Warehouses & Logistics – Temperature-controlled storage and distribution facilities with large-volume cooling requirements
• Schools & Universities- Robust, low-maintenance cooling for classrooms, assembly halls, and administrative buildings
• Mosques & Places of Worship – High-capacity, reliable cooling for large congregational spaces with peak occupancy loads
• Hospitals & Healthcare – Dependable continuous-duty cooling for non-critical areas in hospitals and large healthcare facilities
• Industrial Facilities – Process cooling and worker comfort in manufacturing, food processing, and pharmaceutical production environments
• Hotels & Hospitality – Back-of-house, laundry, kitchen, and large public area cooling requiring robust commercial-grade performance
• Government Buildings – Ministries, municipal offices, and public institutions requiring certified, reliable commercial cooling

Why Choose the APMR-G1 Series

• AHRI certified – Performance verified at internationally recognised nominal conditions providing specifiers and consultants with confident, comparable selection data
• Built for extreme climates – 51.7°C ambient rating covers the most demanding Gulf, South Asian, and African operating conditions without capacity compromise
• Heavy-duty components – Scroll compressors, long-life coils, and Class F enclosed motors deliver extended service life and lower lifetime maintenance costs than standard commercial packaged units
• Self-contained simplicity – All components factory-assembled, wired, and tested, reducing on-site installation time, commissioning risk, and labour cost
• Wide capacity range – 4.6TR to 46.3TR in a single product series allows a single supplier and consistent specification across projects of varying scale
• Eco-friendly refrigerant – R-410A compliance meets current UAE, GCC, India, and international environmental regulations