Midea M-Thermon A 14 kW Monobloc Air Source Heat Pump

The Midea M-Thermon A 14 (model MHC-V14W/D2N8-B2E30, code 14082176) is a monobloc air source heat pump from the Arctic range, designed for heating and cooling medium to large residential and commercial spaces. It features R-32 refrigerant, standard wired control, WiFi connectivity, and compatibility with zoning solutions (Airzone, Acuazone) and BMS (Modbus RTU; BACnet/KNX via gateway).

Important: DHW production is not autonomous in the unit; to have DHW in the installation, an external tank/intertank (not included) and the corresponding hydraulic and control accessories are essential.

Key Features

• Services: heating and cooling. DHW only with external tank.
• 100% water installation: only hydraulic connections on the outdoor unit.
• High temperature supply: water up to 65°C with +5°C outdoor; up to 60°C with −15°C.
• Connectivity: WiFi (MSmartLife app), Amazon Alexa, and Google Assistant.
• Smart Grid Ready and cascade operation without special control to modulate power.
• USB Setup: fast parameterization and diagnostics via USB port.
• Zoning compatibility: Airzone/Acuazone (up to 32 services).
• Regulatory compliance: considered renewable (CTE 2020) and included in CYPE database.

Performance (M-Thermon A 14)

• Heating A7/W35: 14.5 kW · COP 4.6
• Heating A7/W55: 13.8 kW · COP 2.95
• Heating A-7/W35: 12.0 kW · COP 2.85
• Heating A-7/W55: 11.0 kW · COP 2.05
• Cooling A35/W18: 13.5 kW · EER 3.6
• Cooling A35/W7: 12.4 kW · EER 2.5
• SCOP (average climate): 4.72 (W35) · 3.47 (W55)
• SCOP (warm climate): 6.58 (W35) · 4.49 (W55)
• SCOP (cold climate): 4.07 (W35) · 3.05 (W55)
• SEER (cooling): 4.86 (W7) · 6.85 (W18)

Operating Ranges and Temperatures

• Outdoor DHW: −25…+43°C  ·  Outdoor heating: −25…+35°C
• Outdoor cooling: −5…+43°C
• DHW service: 40…65°C (via external tank)
• Heating service: 25…65°C  ·  Cooling service: 5…25°C

Hydraulics and Integrated Components

• Water pump: 8.5 mca (available pressure)
• Expansion vessel: 8 L
• Auxiliary electric heater: 3,000 W
• Minimum system water volume: 60 L
• Nominal flow rate: 2.50 m³/h
• Hydraulic connections: 1 1/4″

Electrical and Acoustic Data

• Power supply: 220–240 V / 1 ph / 50 Hz
• Maximum current: 43 A  ·  Recommended protection: D45 circuit breaker
• Sound pressure: 53.5 dB(A)  ·  Sound power: 65 dB(A)

Refrigerant

• Type: R-32  ·  GWP: 675
• Charge: 1.75 kg  ·  t CO₂ eq: 1.18 t

Dimensions and Weight

• Outdoor unit (W × H × D): 1,385 × 945 × 526 mm
• Net weight: 155 kg

Compatibility and Control

• Airzone / Acuazone: zoning for underfloor heating, fan coils, and radiators.
• Smart Home: MSmartLife app, Alexa, and Google Assistant.
• BMS: Native Modbus RTU; integration with BACnet/KNX via gateway.
• Smart Grid Ready: prepared for external grid signal.

Required Components for DHW (not included)

• DHW tank/intertank with coil sized to demand.
• Tank probe/thermistor and 3-way valve for heating–DHW switching.
• Safety elements: safety valve, non-return valve, purge, sanitary vessel if required.
• Thermostatic mixing valve for safe consumption temperatures.
• Secondary circulator if required by system hydraulics.

Recommended Applications

Single-family or multi-family homes, boiler replacement renovations, and multi-zone projects. The monobloc design reduces paperwork as it is a 100% water installation and speeds up commissioning via USB configuration.

Installation and Maintenance

• Hydraulic supply/return connection, no refrigerant handling required.
• Maintain service distances and a stable surface to minimize vibrations.
• Size hydraulic inertia and balancing according to minimum flow/volume.
• Check wiring sections and protections according to maximum current.

Performance Summary

• Heating capacity: 14.5 kW (A7/W35) · 13.8 kW (A7/W55)
• Cooling capacity: 13.5 kW (A35/W18) · 12.4 kW (A35/W7)
• SCOP: 4.72 (W35, average climate) · 3.47 (W55, average climate)
• SEER: 6.85 (W18) · 4.86 (W7)
• DHW supply: up to 65°C with external tank