PANASONIC Panasonic Heat Pump R290 Aquarea M Air/Water T-CAP, 20 kW, Outdoor Unit – WH-WXG20ME8

Panasonic Hydrosplit Aquarea Big T-CAP heat pump, three-phase, inverter-controlled, R290
Controller module
Controller module for air/water heat pump in hydrosplit design for use with R290 and with a three-phase 400 V / 50 Hz mains connection

Operating modes
Heating, hot water, cooling (cooling mode can be activated via setting)

Outdoor unit
Outdoor unit for air/water heat pump in hydrosplit design with R290 refrigerant and a three-phase 400 V / 50 Hz mains connection. The casing is made of galvanized and stove-enameled sheet steel in anthracite gray (RAL 7016), is suitable for outdoor installation and has a removable casing lid for easy access to internal components. The base plate has mounting tabs and condensate openings.
The axial fan has an enlarged fan diameter for constant airflow to reduce fan speed and is driven by a continuously variable DC motor and a sound and flow-optimized plastic impeller. Tightly mounted control box at the top for safe water discharge. A gas/liquid separator is present in the outdoor unit. Pressure resistance and leak tightness are factory tested and provided with an environmentally friendly basic refrigerant charge. The design requirements according to IEC 60335-2-40: 2022 are met. The heat exchanger consists of copper pipes with pressed-on Bluefin-coated aluminum fins. A 4-pole synchronous motor compressor and a 4-point vibration damper device, as well as soundproof compressor material, ensure a reduction in vibrations and noise. Electronic expansion valve, 4-way reversing valve, filter dryer, and shut-off valves with test connection are included. Line lengths up to 30 m and height differences up to 30 m between indoor and outdoor units are permitted.

Hydraulic circuit
The plate heat exchanger is made of stainless steel. The circulation pump, a Panasonic high-efficiency pump, is continuously controlled with a DC motor. Flow monitoring is available. A vortex flow meter for dynamic adaptation of the water flow rate depending on the specified temperature spread is present, as well as an integrated dirty water magnetic filter for the water circuit and a thermal overcurrent release. Up to three electric heating elements with 3 to 6 kW output can be installed on-site in the hot water or buffer tank. Built-in safety and ventilation valve as well as water pressure sensor for measuring system pressure. Flow temperatures of up to 75 °C are possible. The operating range in heating mode extends down to -28 °C. A water outlet temperature of 55 °C is achieved at an outdoor temperature of up to -25 °C. In cooling mode, the operating range is between 10 °C and 43 °C outdoor temperature. With T-CAP technology, the nominal heating capacity remains constant at an outdoor temperature of up to -20 °C. System safety is enhanced by the hydraulic connection to the indoor unit and the separation of refrigerant in the outdoor unit and electronics in the indoor unit.





Control
Modulating capacity adjustment of the compressor through inverter control technology.
High energy efficiency due to operation starting in partial load range and demand-controlled increase in frequency. Equipped with temperature sensors for outdoor temperature, compressor, hot gas and suction line temperature, as well as evaporator temperature. A circuit reversal procedure ensures rapid and efficient defrosting of the outdoor unit heat exchanger. Communication modules for optimal data exchange with the hydro module.
Separate heating and/or domestic hot water control with a clear control panel and easily understandable symbols, as well as plain text menu displays in 26 different user languages. Continuous display of outdoor and flow temperature, as well as outdoor temperature-controlled adjustment of the flow temperature in heating mode are available. Temperature sensors for condenser, flow, and return temperature. Display of system pressure, weekly timer for time-dependent switching on/off and operating mode selection. A programmable timer is available for thermal disinfection. The control of the electric auxiliary heating is demand-driven.

Further functions
•Automatic operation (heating/cooling)
•Holiday mode
•Screed drying program
•Power consumption display
•Improved defrost function
•Hot water circulation
•Anti-stick mode (prevents components from seizing due to non-use)
•Finer tuning of the start sequence

Self-diagnosis system with display of error codes. Communication modules for optimal data exchange with the outdoor unit.
Optional board for additional functions such as Smart Grid control, power control via 0-10 V signal, control of two heating circuits including heating circuit pumps and mixing valves, solar thermal, external switching between heating and cooling. Smart Cloud adapter.
Setting for prioritization in quiet operation possible, so that a certain volume is not exceeded.

External connection options:
•Optional board for additional functions
•Control input for external on/off switching
•Control input for external room thermostat
•Control output for 2-way valve (cooling mode)
•Control output for 3-way valve (heating / domestic hot water)
•Interface for communication with the Panasonic Smart Cloud

Electrical equipment:
•Electric auxiliary heating
•Thermal overload protection for electric auxiliary heating
•RCD
•Control inputs and outputs

Compliance with EU directives
The device complies with the relevant EU directives and standards.



Subject to technical changes and errors.

Technical data
Heating capacity / COP (A7/W35) 20 kW / 4.80
Heating capacity / COP (A7/W55) 20 kW / 3.18
Heating capacity / COP (A2/W35) 20 kW / 3.39
Heating capacity / COP (A2/W55) 20 kW / 2.08
Heating capacity / COP (A–7/W35) 20 kW / 2.48
Heating capacity / COP (A–7/W55) 20 kW / 1.90
Heating capacity (A–20/W55) 20 kW
Cooling capacity / EER (A35/W7) 20 kW / 3.02
Cooling capacity / EER (A35/W18) 20 kW / 4.79
Seasonal space heating energy efficiency (ηs,h), average climate, W35 / W55 171 % / 141 %
SCOP 4.36 / 3.59
Energy efficiency class Heating, average climate, scale: A+++ to D, W35 / W55A++ / A++
Outdoor unit

Sound power level (partial load, ErP, A7/W55) 2 Heating dB(A) 56
Sound power level (full load, ErP)Heating dB(A) 64
Dimensions / Net weight H x W x D mm / kg 1645 x 1500 x 460 / 240
Pre-filled refrigerant quantity (R290) / CO2 equivalent 3kg / t 3.00 / 0.009
Operating range Outdoor temperature °C –28 / +43
Water outlet temp. Heating (min. / max.) °C 25 / 75
Water outlet temp. Cooling (min. / max.) °C 5 / 20
High-efficiency pump Speed stages variable
Recommended RCD for mains connection 50 A
Recommended cable cross-section (min.) for mains connection mm² 5x10-5x16
1) Observe local regulations. 2) Sound power level according to EN12102 under conditions according to EN14825. 3) WH-WXG models are hermetically sealed