This document is an Installer Reference Guide for the Daikin Altherma 3 M heat pump system, covering models EBLA09~16D and EDLA09~16D (V3/W1/3V3/3W1 variations). It is intended for authorized installers and provides detailed information for installation, configuration, and maintenance.
Function Description
The Daikin Altherma 3 M is a monobloc outdoor heat pump system designed for space heating and cooling, as well as domestic hot water (DHW) production. The system offers flexibility in controlling room temperatures and can be configured for single or multiple leaving water temperature (LWT) zones. It supports various heat emitter types, including underfloor heating, radiators, and heat pump convectors. The system can integrate with an auxiliary heat source (boiler) for bivalent operation and features energy metering capabilities for produced heat and consumed energy. Power consumption control can be implemented through permanent limitation or digital inputs, and it supports Smart Grid connections for optimized energy usage. The unit is designed for outdoor installation and includes protective functions against freezing.
Important Technical Specifications
Model Identification:
The model code (e.g., EBLA16DA3V37) provides specific details:
- E: Monobloc outdoor heat pump
- B: Reversible (heating+cooling)
- D: Heating only
- L: Low water temperature – ambient zone 2
- A: Refrigerant R32
- 09~16: Capacity class
- DA: Model series
- 3: Model with integrated backup heater (or [—] without)
- V3: Power supply 1N~, 230 V AC, 50 Hz
- W1: Power supply 3N~, 400 V AC, 50 Hz
- 7: Model series
Refrigerant:
- Type: R32
- The outdoor unit contains an internal refrigerant circuit; no field piping or charging is required.
Water Circuit:
- Minimum required water flow:
- Cooling: 20 l/min
- Heating/defrost (outdoor temperature > –5°C): 22 l/min
- Heating/defrost (outdoor temperature < –5°C): 22 l/min
- DHW production: 28 l/min
- Maximum water pressure: 4 bar
- Expansion vessel: 8 liters (factory-set pre-pressure of 1 bar)
- Glycol concentration for freeze protection:
- –5°C: 10% (bursting), 15% (freezing)
- –10°C: 15% (bursting), 25% (freezing)
- –15°C: 20% (bursting), 35% (freezing)
- –20°C: 25% (bursting)
- –25°C: 30% (bursting)
- –30°C: 35% (bursting)
- Only propylene glycol (Category III EN1717) for systems with DHW tank.
- Water quality must comply with EU directive 2020/2184.
Electrical:
- Main power supply: 1N+GND or 3N+GND (refer to nameplate for maximum running current).
- Backup heater power supply: 1N~ 230 V (2+GND wires) for integrated backup heater.
- User interface wiring: 4×(0.75~1.25 mm²), max length 200 m.
- Shut-off valve wiring: 2×0.75 mm², max running current 100 mA, 230 V AC.
- Electricity meters wiring: 2 (per meter)×0.75 mm², 12 V DC pulse detection.
- DHW pump wiring: (2+GND)×0.75 mm², max load 2 A (inrush), 1 A (continuous), 230 V AC.
- Alarm output wiring: (2+1)×0.75 mm², max load 0.3 A, 250 V AC.
- Space cooling/heating ON/OFF output wiring: (2+1)×0.75 mm², max load 0.3 A, 250 V AC.
- Changeover to external heat source wiring: 2×0.75 mm², max load 0.3 A, 250 V AC, min load 20 mA, 5 V DC.
- Power consumption digital inputs wiring: 2 (per input signal)×0.75 mm², 12 V DC / 12 mA detection.
- Safety thermostat wiring: 2×0.75 mm², max length 50 m, 16 V DC detection.
- Smart Grid wiring (low voltage): 0.5 mm² (pulse meter), 0.5 mm² (contacts).
- Smart Grid wiring (high voltage): 0.5 mm² (pulse meter), 1 mm² (contacts).
Installation Site Requirements:
- Outdoor installation only.
- Ambient temperatures: 10~43°C (cooling), –25~35°C (heating with integrated/external backup heater), –25~25°C (heating otherwise), –25~35°C (DHW production).
- Minimum service space dimensions (refer to "17.1 Service space: Outdoor unit").
- At least 150 mm free space below the unit, and 100 mm above maximum expected snow level.
- Avoid direct sea winds; install windbreaker (height ≥1.5×unit height).
Usage Features
Control and Configuration:
- User Interface (MMI): The system is configured via a user-friendly interface, allowing access to various settings and schedules.
- Configuration Wizard: Guides initial setup for important settings like language, time/date, backup heater type, DHW settings, and number of zones.
- Room Thermostat Control: Can be controlled by a dedicated Human Comfort Interface (BRC1HHDA) or an external wired/wireless room thermostat.
- Weather-Dependent Curve: Automatically adjusts leaving water or tank temperature based on outdoor temperature, configurable via 2-points or slope-offset methods.
- Schedules: Program daily/weekly schedules for room temperature (heating/cooling), DHW tank temperature, quiet mode, and electricity prices.
- Operation Modes: Select heating only, cooling only, or automatic changeover based on outdoor temperature and schedules.
- Holiday Mode: Temporarily deviates from normal schedules, turning off space heating/cooling and DHW operation while maintaining frost protection.
- Quiet Mode: Decreases outdoor unit sound, with multiple levels, manually or automatically activated, and configurable restrictions.
- Energy Metering: Displays estimated produced heat and consumed energy (per month/year) for space heating, cooling, and DHW. Can be calculated internally or measured with external power meters.
- Power Consumption Control: Limits total system power consumption (outdoor unit + backup heater) permanently or via digital inputs (up to four steps). BBR16 power limitation is available for Swedish regulations.
- Smart Grid: Connects to a Smart Grid for optimized energy consumption, with modes like Free running, Forced off, Recommended on, and Forced on.
- External Temperature Sensor: Optional remote indoor or outdoor sensors for improved system behavior.
Domestic Hot Water (DHW):
- Tank Options: Supports various stainless steel and polypropylene tanks, with or without integrated booster heaters.
- Heat Up Modes: Reheat only, Schedule + reheat, or Schedule only.
- Disinfection Function: Periodically heats DHW to a specific temperature for disinfection, configurable for operation day, start time, tank setpoint, and duration.
- DHW Pump: Optional for instant hot water, disinfection, or tank preheating.
Maintenance Features
Yearly Maintenance (Recommended at least once a year by authorized installer/service agent):
- Heat Exchanger: Clean yearly to prevent blockages and maintain performance.
- Water Filter: Close valve, clean, and rinse.
- Water Pressure: Maintain above 1 bar; add water if necessary.
- Water Pressure Relief Valve: Open and check for correct operation and clean water flow.
- DHW Tank Pressure Relief Valve: Open and check for correct operation and clean water flow.
- Switch Box: Visual inspection for loose connections or defective wiring. Check contactors (K1M, K2M, K3M, K5M) for open position when power is OFF.
Troubleshooting:
- Symptom-Based: Provides corrective actions for common issues like insufficient heating/cooling, hot water not reaching desired temperature, compressor not starting, gurgling noises, blocked pump, noisy pump (cavitation), and pressure relief valve leaks.
- Error Code-Based: Displays error codes on the user interface with short and long descriptions, guiding the installer to specific problems (e.g., water flow problems, sensor malfunctions, PCB defects, compressor issues, communication errors).
- Forced Defrost: Manually initiate a defrost operation.
- Actuator Test Run: Perform test runs for various actuators (booster heater, backup heater, pump, diverter valve, bivalent signal, alarm output) to confirm operation.
- Underfloor Heating Screed Dryout: Function to dry out screed in underfloor heating systems, with programmable duration and temperature steps.
Safety Precautions:
- Warnings and symbols for DANGER (electrocution, burning/scalding, explosion), WARNING (flammable material, improper installation), CAUTION (injury, air inlet/fins), and NOTICE (equipment/property damage).
- Emphasizes turning OFF power before servicing, wearing PPE, proper refrigerant handling, and compliance with legislation.
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