Description

The Monoblock Air Source Heat Pump is an integrated DC inverter monoblock air source heat pump for space heating, cooling, and domestic hot water (DHW). The outdoor cabinet houses the inverter compressor, plate heat exchanger, circulation pump, and expansion vessel in a single chassis, eliminating refrigerant pipe routing inside the building.

Refrigerant: R290 (Propane, GWP = 3)
Energy Efficiency: ErP A+++ rating (W35C / W55C)
Operating Limit: Ambient temperature down to -25C
Max Leaving Water Temperature: 75C for high-temperature radiator retrofitting

Product Range

Model	Heating Capacity (A7/W35)	Cooling Capacity (A35/W7)	Power Supply	Dimensions (W x D x H, mm)	Net Weight
MB-06-R290	6.0 kW	5.5 kW	230V / 1Ph / 50Hz	1110 x 480 x 865	115 kg
MB-09-R290	9.0 kW	8.2 kW	230V / 1Ph / 50Hz	1110 x 480 x 865	120 kg
MB-12-R290	12.0 kW	11.0 kW	400V / 3Ph / 50Hz	1290 x 490 x 1420	165 kg
MB-16-R290	16.0 kW	14.5 kW	400V / 3Ph / 50Hz	1290 x 490 x 1420	175 kg

Technical Specifications

Technical Parameter	Specification Detail
Test Standards & Compliance	EN 14511, EN 14825. Certified by EHPA KEYMARK, MCS (UK), CE-RED.
Compressor & Inverter	Hermetic DC inverter rotary/scroll compressor (Modulation range: 20 Hz to 100 Hz).
Hydraulic Module	PWM-controlled inverter wet rotor pump (Max head: 7.5 m) & 8L diaphragm expansion vessel.
Flow Detection	Differential pressure sensor and paddle flow switch.
Acoustic Performance	Sound pressure level: 42 dB(A) to 48 dB(A) at 1 meter (EN 12102). Silent mode: -4 dB(A).
Electrical Protection	IPX4 water resistance, phase sequence protection, overcurrent trip.

Key Features

Low-GWP Refrigerant: R290 refrigerant complies with EU F-Gas regulations (GWP = 3, ODP = 0).

High Thermal Output: Delivers 75C leaving water at -10C ambient without auxiliary electric heaters.

Dynamic Modulation: Full DC inverter control adjusts compressor and fan speed continuously to match thermal load.

Frost Mitigation Logic: Automatically activates circulation pump and optional electric trace heating when ambient or water drops below +4C.

Smart Grid Compatibility: Standard Modbus RTU protocol with SG Ready inputs for photovoltaic (PV) and dynamic tariff integration.

Technology & Working Principle

Evaporation: Ambient air flows through the finned-tube evaporator; low-pressure liquid R290 absorbs thermal energy.

Compression: The DC inverter compressor raises refrigerant vapor pressure and temperature.

Condensation: Superheated R290 passes through the brazed plate heat exchanger (BPHE) to heat the hydronic loop.

Expansion: Electronic expansion valve (EEV) reduces refrigerant pressure and temperature before evaporator re-entry.

Distribution: Heated water circulates to buffer tanks, underfloor manifolds, or fan coil units.

Applications

Space Heating & Cooling: Underfloor heating, low-temperature fan coil units (FCUs), and panel radiators.

Domestic Hot Water: Integration with single or double-coil storage tanks via a 3-way diverter valve.

Boiler Retrofits: Direct fossil fuel boiler replacement for European residential heating upgrades.

System Solutions

Primary Circuit: Outdoor monoblock connected to an indoor buffer tank or hydraulic separator via insulated water pipes (with glycol antifreeze or isolation valves).

Secondary Distribution:

Circuit A: Underfloor heating via a motorized mixing valve.

Circuit B: High-temperature radiators via direct loop.

Circuit C: DHW tank via 3-way diverter valve.

Included Accessories: Flexible anti-vibration hoses, water return Y-strainer, 3 bar safety relief valve, wired room thermostat.

OEM & ODM Customization

Enclosure & Branding: Custom RAL sheet metal coloring, laser-etched front grille logo, localized user manuals.

Software & Controls: Customized HMI display language, private-label cloud app integration, and regional defrost algorithm tuning.

Hydraulic Options: Optional integrated booster pumps, secondary expansion vessels, and custom sensor calibrations.

Quality Control

Material Verification: Spectroscopic analysis of copper tubes and steel plate thickness checks.

Pressure Testing: Helium leak detection and 3.0 MPa nitrogen pressure holding test for 24 hours.

Electrical Testing: 1800V dielectric strength test (1s), earth continuity, and insulation resistance (>50 MOhm).

Automated Run Test: 100% factory testing on a water-enthalpy test bench simulating -25C to +43C ambient conditions for capacity, COP, and electrical draw verification.

FAQ

Q: What is the maximum pipe run between the outdoor unit and indoor buffer tank?

A: The maximum recommended one-way pipe distance is 30 meters, subject to hydraulic head calculations. PEX or multi-layer composite pipes require minimum 20 mm closed-cell insulation.

Q: How is freeze protection maintained during power outages in sub-zero weather?

A: By adding propylene glycol antifreeze matching local winter thresholds (down to -25C), or utilizing an optional secondary plate heat exchanger loop with an uninterruptible power supply (UPS).

Q: What compliance documentation is supplied for subsidy applications?

A: ISO 17025 accredited laboratory test reports (TÜV Rheinland / SGS), EHPA KEYMARK, MCS, CE-RED, and ErP energy labels.

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