This document is a user reference guide for the Daikin Altherma hybrid heat pump, covering models EHYHBH05AA, EHYHBH08AA, EHYHBX08AA, and EHYKOMB33AA. It provides detailed instructions and background information for both basic and advanced usage of the system.
Function Description
The Daikin Altherma hybrid heat pump system is designed to provide space heating, space cooling (if a heating/cooling heat pump model is installed), and domestic hot water. The system can be configured to operate in various modes, including heating only, cooling only, or automatic changeover based on outdoor temperature and user settings.
Space Heating/Cooling Control:
Users can control space heating and cooling by setting the space operation mode (heating or cooling) and adjusting the desired temperature. The system supports different temperature control methods:
- Room thermostat control: Controls the room temperature of the main zone and the leaving water temperature of the main zone.
- Leaving water temperature control: Directly controls the leaving water temperature.
- External room thermostat control: Relies on an external thermostat for room temperature control while the Daikin user interface controls the leaving water temperature.
Domestic Hot Water (DHW) Control:
DHW control varies depending on whether a tank is installed.
- Instant DHW (no tank): The boiler provides hot water instantly on demand.
- DHW tank (with tank): Supports reheat mode (continuous heating to a set temperature), scheduled mode (heating according to a schedule), and scheduled + reheat mode (scheduled heating with a reheat function if the temperature drops below a preset value).
Energy Price Settings:
The system allows users to set gas and electricity prices. This feature is particularly useful when the system's savings mode is set to "Economical," as it helps optimize running costs by taking into account different electricity price levels (High, Medium, Low) and a fixed gas price. It can also factor in incentives per kWh for renewable energy.
Energy Visualisation:
The user interface can graphically display energy statistics, including:
- Produced energy: Energy generated by the heat pump.
- Consumed electricity: Recorded by an electricity meter or calculated by the interface.
- Consumed gas: Recorded by an external gas meter (if installed).
Important Technical Specifications
- Refrigerant Type: R410A
- Global Warming Potential (GWP) Value: 2087.5
- Temperature Control: The system can be configured for room thermostat control, leaving water temperature control, or external room thermostat control.
- DHW Tank Modes: Reheat, Scheduled, Scheduled + Reheat.
- Energy Price Inputs: Supports fixed gas prices and three electricity price levels (High, Medium, Low).
- Units of Measurement: Configurable for date, time, temperature (°C/°F), produced energy (kWh/MBtu), flow (l/min/GPM), efficiency (EU/USA), and consumed gas (m³/ft³/kWh).
Usage Features
User Interface:
The system is operated via a user interface with buttons for navigation and setting adjustments.
- Buttons: Include Home Pages, Malfunction Information, ON/OFF, Menu Structure/Back, Navigating/Changing Settings, and OK.
- Status Icons: Provide visual feedback on the system's current operation mode (heating/cooling), heat pump/boiler operation, desired temperatures, DHW tank mode, quiet mode, holiday mode, button/function lock, and malfunction status.
Basic Usage:
- Home Pages: Used for daily settings and readouts (e.g., room temperature, leaving water temperature, DHW tank temperature).
- Menu Structure: Used for configuring settings not meant for daily adjustment.
- Turning ON/OFF Controls: Controls like room temperature, leaving water temperature, and domestic hot water can be turned ON or OFF.
Advanced Usage:
- User Permission Levels: Allows switching between "End user" (default) and "Advanced end user" to access more detailed information and settings.
- Quiet Mode: Reduces the outdoor unit's noise level. Can be completely deactivated, manually activated to a specific level, or programmed via a schedule.
- Holiday Mode: Allows deviation from normal schedules during holidays, with settings for "Home" (staying at home) or "Away" (going away) scenarios.
- Information Readout: Provides access to sensor information, energy metering data, error/warning history, user permission level, actuator status, operation modes, and system version.
- Configuration: Users can configure date, time, units of measurement, contrast, backlight, user profile (Basic/Detailed), and available home pages.
- Preset Values and Schedules:
- Preset Values: Define common values for various controls (e.g., Comfort, Eco for room temperature) to simplify settings across schedules and home pages.
- Schedules: Program custom or use predefined schedules for room temperature, leaving water temperature, DHW tank temperature, quiet mode, DHW pump, and electricity price.
- Weather Dependent Operation: The leaving water temperature setpoint can be fixed or automatically adjusted based on outdoor temperature.
Maintenance Features
General Maintenance:
- Yearly Maintenance: To be performed by an authorized installer.
- User Responsibilities:
- Keep the area around the unit clean.
- Clean the user interface with a soft damp cloth (no detergents).
- Regularly check the water pressure on the gas boiler (should be above 1 bar).
- Ensure electricity and gas prices in the user interface are up-to-date.
Troubleshooting:
- Error History: Users can check a history of errors.
- Warning History: Users can check a history of warnings.
- Symptom-Based Solutions: The guide provides solutions for common issues like feeling too cold/hot in the living room (adjusting desired temperature or schedule), water at the tap being too cold (activating DHW booster mode, adjusting DHW tank temperature or schedule), and heat pump failure (gas boiler can take over as emergency backup).
- Contact/Helpdesk Number: Information on how to find the installer's contact details is provided.
Relocation and Disposal:
- Relocation: Contact the installer for assistance with relocating system parts.
- Disposal: Contact the installer for proper disposal of system parts, as electrical and electronic products, refrigerants, oil, and other parts must be handled by authorized personnel according to applicable legislation. Batteries are also marked for separate disposal.
Safety Precautions:
The document emphasizes important safety precautions, including warnings about death or serious injury, electrocution, burning, and flammable materials. It also provides cautions for minor injury and equipment damage, and information for general safety and proper operation.
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