PANASONIC Panasonic Controller Module for T-CAP&HP 400V WH-CME8, M-Gen – WH-CME8

Controller Module
Controller module for air-to-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 settings)

Indoor Unit
Particularly compact housing (450 x 520 x 116 mm) for easy installation and minimal space requirements, made of galvanized and stove-enamelled steel sheet in white (RAL9010). Wall-mounted unit with a sheet steel control box with its own hinged door for the electrical connections, which are located inside the housing on the front. The control unit is accessible without opening the housing. All sensor readings can be retrieved via the control unit. Two CN-CNT connections are available for increased connectivity. The Cloud Adapter is already pre-installed in the indoor unit, and Modbus can be connected if required. Energy and heat meters can be connected via an external meter gateway (PAW-EXTMETER). The installation of a bivalent electric auxiliary heater from third-party providers is supported on-site.
Hydraulic Circuit
The plate heat exchanger is made of stainless steel. The circulation pump, a Panasonic high-efficiency pump, is continuously controlled by a DC motor. Flow monitoring is present. A vortex flow meter is available for dynamic adjustment of the water flow rate depending on the specified temperature spread, 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 vent valve, as well as a water pressure sensor for measuring the system pressure. Flow temperatures of up to 75 °C are possible. The operating range in heating mode goes 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 increased 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 through operation start in the partial load range and demand-driven frequency increase. 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 easy-to-understand symbols, as well as plain text menu displays in 26 different user languages. Continuous display of outdoor and flow temperatures, as well as outdoor temperature-dependent adjustment of the flow temperature in heating mode, are available. Temperature sensors for condenser, flow, and return temperatures. Display of system pressure, weekly timer for time-dependent on/off switching and operating mode selection. A programmable timer is available for thermal disinfection. The electric auxiliary heating is controlled as needed.
Additional 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 error code display. 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 prioritizing quiet operation possible, so that certain noise levels are 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
•Residual current device
•Control inputs and outputs Conformity with EU directives
The device complies with the relevant EU directives and standards. Technical changes and errors reserved.

Technical Data
Indoor Unit
WH-CME8
Dimensions H x W x D mm 454 x 520 x 116
Net weight kg 7
On-site heating element kW up to 9 kW
Recommended RCD for mains connection A 20
Recommended cable cross-section (min.) for mains connection mm² 5x1.5
Cross-section of the connecting cable to the outdoor unit mm² 2x0.75 (shielded)