HITACHI Advanced VRF Climate Technology & Japanese Precision Engineering
HITACHI VRF climate systems merge Japanese precision engineering, proprietary compressor technology, and award-winning design aesthetics to provide premium solutions for commercial towers, luxury hospitality, premium residential developments, and mixed-use complexes. The patented SmoothDrive 2.0 stepless inverter control algorithm continuously fine-tunes compressor RPM in millisecond intervals during part-load conditions, ensuring room temperature precision and outstanding seasonal energy efficiency. NORM Elektromekanik operates as an authorized commercial equipment sales and engineering partner for HITACHI VRF systems, providing certified manufacturer-backed engineering submittals and supply.
Advanced Outdoor Architecture: SideSmart™ & Set Free Sigma™
- SideSmart™ Slim Modular Series: Features an ultra-slim 420 mm chassis depth, specifically engineered for narrow service balconies, perimeter walkways, and between-floor utility shafts (available in modular units from 8 to 18 HP, combinable up to 72 HP). Eliminates expensive crane hoisting and preserves usable floor space.
- Set Free Sigma™ High-Capacity Modular VRF: Top-discharge standardized modular chassis ranging from 8 HP to 96 HP (270 kW) in modular combinations. Available in Heat Pump and Heat Recovery architectures, featuring high external static pressure capabilities (up to 80 Pa outdoor fan ESP) for ducted plantroom installations.
- Catalog Operating Limits: Rated operation from -5°C to +52°C in cooling, and down to -20°C / -25°C in heating mode according to certified manufacturer technical datasheets.
Architectural Indoor Units & Model-Specific Hygiene Features
- Silent-Iconic™ Design Panel: Recipient of the Red Dot and iF Design Awards, the Silent-Iconic™ panel is exclusively developed for 4-way cassette indoor units (RCI series), blending flush into contemporary architectural ceiling grids.
- FrostWash™ Self-Cleaning Coil Technology: Available on compatible HITACHI indoor unit models (selected wall-mounted and 4-way cassette series); FrostWash™ freezes moisture on the heat exchanger coil and rapidly flushes it away during defrost, eliminating up to 99% of dust, mold, and bacteria per manufacturer testing standards (JEM1467 standard).
- Low-Profile Concealed Ducted Units: Engineered for restricted ceiling voids in luxury residential suites and hotels. Select ducted models provide quiet operation down to 20–23 dB(A) at low fan speed.
Astana & Cold Climate Engineering & Bivalent Approach
In Astana and northern Kazakhstan, outdoor winter temperatures can reach severe conditions. While HITACHI air-source VRF units provide heating at low ambient temperatures within catalog limits, thermodynamic performance variations in heating capacity can occur depending on model selection, piping runs, and specific project conditions. To reliably handle peak heating requirements and ensure energy balance in severe winter climates, a bivalent (hybrid) engineering integration—utilizing secondary district heating heat exchangers (ITP) or auxiliary heating systems—is recommended according to project specifications and architectural guidelines. NORM engineers analyze local climate bin curves to optimize equipment sizing and auxiliary heating balance using manufacturer selection software.
IoT Cloud Monitoring (airCloud Pro) & BMS Interfacing
The HITACHI airCloud Pro cloud management platform enables facility operators to remotely supervise, schedule, control, and analyze energy metrics 24/7 via mobile app or web browser. Fully interoperable with central building management systems via BACnet®, Modbus®, and LonWorks® gateways.
NORM Engineering & Authorized Procurement
NORM Elektromekanik delivers tailored equipment selection, certified refrigerant piping simulations, submittal preparation, and direct factory procurement for HITACHI VRF installations across commercial project developments.
