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

The Midea M-Thermon A 14T (model MHC-V14W/D2RN8-B2ER90, code 14082179) is a three-phase monobloc air-to-water heat pump from the Arctic range, designed for heating and cooling in homes and buildings with a thermal demand of around 14.5 kW (A7/W35). It features R-32 refrigerant, wired control, WiFi connectivity, and compatibility with zoning systems and BMS.

Important: the unit does not produce domestic hot water (DHW) autonomously; to have DHW, an external tank/intertank is essential (not included) along with the corresponding hydraulic and control accessories.

Key Features

• Services: heating and cooling. DHW only with external tank.
• 100% water installation: only hydraulic connections (no gas handling).
• High temperature: water supply up to 65 °C with +5 °C outdoor; up to 60 °C with −15 °C.
• Connectivity: WiFi (MSmartLife app), compatible with Amazon Alexa and Google Assistant.
• Smart Grid Ready and cascade without special control.
• USB Setup: fast parameterization and diagnostics via USB port.
• Zoning and BMS: Airzone/Acuazone; native Modbus RTU (BACnet/KNX via gateway).
• CTE 2020 / CYPE: recognized as renewable and included in the CYPE database.

Performance (M-Thermon A 14T)

• 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): 4.83 (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: available pressure 8.5 mwc
• Expansion vessel: 8 L
• Electric backup heater: adjustable 9,000/6,000/3,000 W
• Minimum water volume: 60 L
• Nominal flow rate: 2.50 m³/h
• Hydraulic connections: 1 1/4″

Electrical and Acoustic Data

• Power supply: 380–415 V / 3 ph / 50 Hz
• Maximum current: 27 A  ·  Recommended protection: D32 circuit breaker
• Sound pressure: 54 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: 172 kg

Compatibility and Control

• Zoning: Airzone / Acuazone (underfloor heating, fan coils, 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 and 3-way valve for heating–DHW switching.
• Safety elements: safety valve, non-return valve, air vents, sanitary vessel if required.
• Thermostatic mixing valve to limit consumption temperature.
• Secondary circulator if required by the system hydraulics.

Recommended Applications

Larger single-family homes, compact technical rooms, and projects with three-phase supply. The 100% water monobloc design facilitates regulatory compliance and speeds up commissioning via USB configuration.

Installation and Maintenance

• Hydraulic supply/return connections; no refrigerant handling required.
• Maintain service distances, level base, and anti-vibration elements.
• Size 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) · 4.83 (W7)
• DHW supply: up to 65 °C with external tank