PANASONIC Panasonic Controller Module for T-CAP&HP 400V WH-CME8L, M-Gen, for 20, 25 and 30 kW – WH-CME8L

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 settings)

Indoor unit
Particularly compact housing (454 x 520 x 116 mm) for easy installation and minimal space requirements, made of galvanized and stove-enamelled sheet steel in white (RAL9010). Wall-mounted unit with sheet steel control box with its own hinged door for the electrical connections, which are located on the front inside the housing. Control unit accessible without opening the housing. All sensor readings can be called up via the control unit. Two CN-CNT connections are available for increased connectivity. The Cloud Adapter is 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 volume flow meter for dynamic adjustment of the water volume flow depending on the specified temperature difference 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 vent valve as well as 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 reached 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 outdoor temperatures 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 as well as electronics in the indoor unit.

Control
Modulating power adjustment of the compressor through inverter control technology. High energy efficiency through operation start in partial load range and demand-controlled 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 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 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 setting. A programmable timer is available for thermal disinfection. The electric auxiliary heater is controlled as required.
Further functions
•Automatic mode (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 adjustment 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 CloudElectrical equipment:
•Electric auxiliary heater
•Thermal overload protection for electric auxiliary heater
•RCD
•Control inputs and outputsConformity with EU directives
The device complies with the relevant EU directives and standards.Technical
changes and errors excepted.
Technical Data
Indoor unit
WH-CME8L
Dimensions H x W x D mm 454 x 520 x 116
Net weight kg 7
On-site heating element kW 3 x 3 to 6 kW
Recommended RCD for mains connection A≤ 9 kW: 209 kW < ≤ 18 kW: 40
Recommended cable cross-section (min.) for mains connection 1mm²≤ 12 kW: 5x2.512 kW < ≤ 15 kW: 5x4.015 kW < ≤ 18 kW: 5x6,
Cross-section of the connection cable to the outdoor unit mm² 2x0.75 (shielded)