Nordic Cold Climate Heat Pump

Nordic Cold Climate Heat Pump

Operating reliably down to -35°C ambient temperature, this R290 cold climate heat pump delivers space heating and domestic hot water in severe cold regions.
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Description

Operating reliably down to -35°C ambient temperature, this R290 cold climate heat pump delivers space heating and domestic hot water in severe cold regions. Utilizing dual-stage rotary/scroll compression and EVI (Enhanced Vapor Injection) technology, the unit maintains over 80% of its rated heating capacity at -15°C and provides leaving water temperatures up to 75°C, serving as a high-efficiency solution for hydronic heating retrofits and low-carbon buildings.

 

Key Features

 

Sub-Zero Operation: Continuous heating output down to -30°C ambient without mandatory auxiliary electric heater intervention.

High-Temperature Water Delivery: Maximum leaving water temperature of 75°C, compatible with traditional high-temperature cast-iron and aluminum radiators for seamless retrofit projects.

Acoustic Silence: Multi-layer sound insulation enclosure, DC inverter fan motor, and floating compressor mounting limit sound pressure level to 42 dB(A) at a 3-meter distance.

Adaptive Defrost Control: Real-time coil temperature, humidity, and runtime algorithm minimizes defrost cycle frequency and duration.

Low GWP Refrigerants: Factory-charged with eco-friendly R290 propane or R32, fully compliant with international environmental regulations and F-gas directives.

 

Technical Specifications

 

Technical Parameters

Model: NCH-12R (Single Phase)

Model: NCH-18R (Three Phase)

Model: NCH-24R (Three Phase)

Heating Capacity (+7°C Ambient / 35°C Water)

12.0 kW

18.5 kW

24.0 kW

COP (+7°C Ambient / 35°C Water)

4.65

4.58

4.52

Heating Capacity (-15°C Ambient / 35°C Water)

10.2 kW

15.6 kW

20.5 kW

COP (-15°C Ambient / 35°C Water)

2.85

2.80

2.76

Max Leaving Water Temperature

75°C

75°C

75°C

Operating Ambient Temperature Range

-35°C ~ +43°C

-35°C ~ +43°C

-35°C ~ +43°C

Compressor Type

EVI DC Inverter Rotary

EVI DC Inverter Scroll

EVI DC Inverter Scroll

Refrigerant / Charge

R290 / 1.4 kg

R290 / 2.2 kg

R290 / 2.8 kg

Sound Power Level (EN 12102)

52 dB(A)

55 dB(A)

57 dB(A)

Power Supply

220-240V/1Ph/50Hz

380-415V/3Ph/50Hz

380-415V/3Ph/50Hz

Water Connection Size

1-inch BSP

1-inch BSP

1.25-inch BSP

Net Dimensions (W x D x H)

1110 x 480 x 880 mm

1150 x 520 x 1420 mm

1150 x 520 x 1420 mm

Net Weight

135 kg

185 kg

198 kg

 

Technology & Performance

 

EVI Twin-Injection Compression: An intermediate enthalpy-adding flash tank increases refrigerant mass flow rate at sub-zero temperatures, stabilizing discharge temperature and preventing compressor overheating.

Hydrophilic Blue-Fin Evaporator: Wide-pitch louvered fins with hydrophilic coating accelerate condensate drainage during defrost cycles to mitigate coil ice bridging.

Integrated Hydraulic Module: Incorporates a high-efficiency Wilo/Grundfos inverter circulation pump, expansion vessel, Alfa Laval/SWEP plate heat exchanger, and safety relief valve, reducing on-site installation time by 50%.

Smart IoT Controller: Modbus RTU and BACnet protocols enable seamless Building Management Systems (BMS) integration and remote diagnostics.

 

Applications

 

Residential Hydronic Heating: Stable low-temperature water delivery (35°C to 45°C) for underfloor heating loops and fan coil units in insulated homes.

Legacy Boiler Retrofits: Direct fossil-fuel boiler replacement by supplying high-temperature water (60°C to 75°C) to existing high-temperature radiator circuits.

Light Commercial Projects: Cascaded multi-unit configurations (up to 16 units in parallel) delivering up to 384 kW heating capacity for offices, retail spaces, and multi-family apartments.

 

OEM & ODM Customization

 

Structural Enclosures: Tailored cabinet dimensions, custom RAL powder-coating colors, and laser-etched private-label nameplates.
Hydraulic Integration: Optional integration of auxiliary electric heaters (3 kW to 9 kW), dual-zone mixing valves, or domestic hot water 3-way diverter valves.
Controller Branding: Customized boot logos, localized touchscreen UI languages, and proprietary API integration for regional cloud platforms. 

 

Quality Control & Manufacturing Facility

 

Manufacturing Capacity: Produced in a 45,000 m² vertically integrated HVAC facility with an annual output of 50,000 units.

100% Helium Leak Testing: Executed on all refrigerant circuits and brazed joints under 3.0 MPa pressure.

Electrical Safety Verification: Dielectric withstand testing (3000V), earth continuity testing, and insulation resistance checks performed on every batch.

Acoustic & Performance Testing: Sound power level verification compliant with ISO 3744 standards, paired with full-load calorimeter climate simulation labs covering -35°C to +45°C operating points.

Certifications: CE-LVD, CE-EMC, ErP Energy Efficiency Label (A+++ at 35°C / A++ at 55°C), KEYMARK, and RoHS compliance.

 

Packaging & Shipping

 

Export-Standard Crating: Fumigation-free plywood crates with internal shock-absorbing EPE foam blocks and moisture-barrier vacuum packaging.

Transit Monitoring: Palletized units equipped with Shockwatch and tilt-watch indicator labels.

Logistics Efficiency: Optimized container loading (18 units per 40' High Cube container for standard outdoor chassis) with flexible FOB/CIF terms from major ports.

 

FAQ

 

Q: Does the unit require auxiliary heaters at extreme sub-zero temperatures?

A: Operating down to -35°C, EVI twin-injection technology provides sufficient thermal output without mandatory auxiliary heaters down to -25°C under standard building load designs.

Q: What is the maximum water output when ambient temperature drops to -20°C?

A: The unit supplies up to 65°C leaving water at -20°C ambient, matching legacy radiator requirements.

Q: What certifications support regional customs clearance and subsidies?

A: Units carry CE, KEYMARK, and ErP A+++ ratings, satisfying major European green heating subsidy criteria and safety compliance standards.

Q: Can the system integrate with third-party thermostats or BMS?

A: Yes. Standard Modbus RS485 and potential-free dry contacts support direct integration with third-party room thermostats and building management controllers.

Q: What are the standard warranty and support terms?

A: A 3-year warranty covers core components (compressor and plate heat exchanger) alongside a 2-year full-unit warranty, supported by spare parts dispatch within 48 hours.

 

Request a Quote

 

Call to Action: Submit project specifications (heating load, design ambient temperature, target standards) to receive a custom technical proposal, STEP/CAD drawings, and wholesale pricing within 24 hours.

[Button: Request Technical Proposal & Pricing]

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