This document is the Installation Manual for the Daikin Altherma R32 Monobloc Systems, specifically for the Domestic Hot Water Pre-Plumbed Tank. It covers models UK.PPC150SL/R32, UK.PPC150/R32, UK.PPC180SL/R32, UK.PPC180/R32, UK.PPC210/R32, UK.PPC250/R32, and UK.PPC300/R32. The manual provides comprehensive instructions for the installation, commissioning, and servicing of these domestic hot water tanks.
Function Description
The Daikin Altherma R32 Monobloc Domestic Hot Water Pre-Plumbed Tank is designed to provide domestic hot water for residential applications, integrating with Daikin Altherma R32 Monobloc heat pump systems. The pre-plumbed design aims to simplify installation by having many components factory-fitted. The cylinder can function either as a hydraulic separator, separating primary and secondary heating circuits, or as a volumiser, depending on the configuration. It includes an immersion heater with an integral control thermostat and a high-limit cut-out for supplementary heating or backup. The system is designed to comply with relevant building regulations, including G3 for discharge pipework from safety valves.
Important Technical Specifications
The manual provides detailed technical specifications for both standard and slimline pre-plumbed cylinders:
Standard Pre-Plumbed Cylinders (UK.PPC150 to UK.PPC300):
- Energy Efficiency Class: B or C, depending on the model.
- Standing Heat Loss (ErP): Ranges from 54 W (UK.PPC150) to 96 W (UK.PPC300).
- Storage Volume: Ranges from 148 L (UK.PPC150) to 301 L (UK.PPC300).
- Integrated Vessel Storage Volume: 33 L for all standard models.
- Standing Heat Loss (kWh/24h): Ranges from 1.29 (UK.PPC150) to 2.29 (UK.PPC300).
- Max. Water Temperature: 90°C.
- Primary Immersion Capacity: 3 kW.
- Primary Immersion Power Supply: 1-phase/230V/50Hz.
- Primary Immersion Recommended Fuse: 16 A.
- Secondary Immersion Capacity: 3 kW.
- Secondary Immersion Power Supply: 1-phase/230V/50Hz.
- Secondary Immersion Recommended Fuse: 16 A.
- Height: Ranges from 1400 mm (UK.PPC150) to 1877 mm (UK.PPC300).
- Diameter: 550 mm for UK.PPC150-250, 600 mm for UK.PPC300.
- Empty Weight: Ranges from 46 kg (UK.PPC150) to 86 kg (UK.PPC300).
- Material Inside Cylinder: Stainless steel 2304.
- Piping Connections (diameter): Water inlet H/E and Water outlet H/E are 28 mm; Cold water in and Hot water out are 22 mm.
Slimline Pre-Plumbed Cylinders (UK.PPC150SL, UK.PPC180SL):
- Energy Efficiency Class: B.
- Standing Heat Loss (ErP): 52 W (UK.PPC150SL) and 58 W (UK.PPC180SL).
- Storage Volume: 152 L (UK.PPC150SL) and 178 L (UK.PPC180SL).
- Integrated Vessel Storage Volume: 25 L for both slimline models.
- Standing Heat Loss (kWh/24h): 1.23 (UK.PPC150SL) and 1.39 (UK.PPC180SL).
- Max Water Temperature: 90°C.
- Primary Immersion Capacity: 3 kW.
- Primary Immersion Power Supply: 1-phase/230V/50Hz.
- Primary Immersion Recommended Fuse: 16 A.
- Secondary Immersion Capacity: 3 kW.
- Secondary Immersion Power Supply: 1-phase/230V/50Hz.
- Secondary Immersion Recommended Fuse: 16 A.
- Height: 1869 mm (UK.PPC150SL) and 1970 mm (UK.PPC180SL).
- Diameter: 475 mm for both slimline models.
- Empty Weight: 59 kg (UK.PPC150SL) and 67 kg (UK.PPC180SL).
- Material Inside Cylinder: Stainless steel 2304.
- Piping Connections (diameter): Water inlet H/E and Water outlet H/E are 28 mm; Cold water in and Hot water out are 22 mm.
Usage Features
The system is designed for ease of use and safety. The digital controller for the on-board pump (Dixell control panel) allows users to display and change the target setpoint for the water temperature used to run the on-board pump for space heating. The factory default setpoint is 37°C, but it can be adjusted based on specific requirements. The controller also provides indicators for compressor status, anti-short cycle delay, defrost in progress, and measurement units. For domestic hot water setpoint, the Dixell control panel should NOT be used.
The manual emphasizes several safety precautions:
- Electrical Safety: All wiring must be performed by an authorised electrician, comply with applicable legislation, and use multicore cables for power supply. Power supply must be protected with a main switch, slow blow fuse, and earth leakage protector.
- Water Quality: Water quality must comply with EU Directive 98/93 EC. Plastic pipes must be oxygen diffusion tight to prevent corrosion.
- Installation Site: Requires sufficient space for servicing and air circulation, stable base, good ventilation, and must be levelled. Avoid installation in potentially explosive atmospheres, areas with strong electromagnetic waves, or where flammable/corrosive gases are present.
- Filling the Tank: The domestic hot water tank must be completely filled before operating the system to prevent damage to the immersion heater and electrical errors.
- Hydraulic Separation/Volumiser: The pre-plumbed cylinder is supplied as a hydraulic separator by default, but can be configured as a volumiser. An on-board water circulation pump is included. If no water circulation is possible on the secondary side, an automatic bypass valve should be fitted.
Maintenance Features
Regular maintenance is crucial for the longevity and efficient operation of the domestic hot water tank. The manual recommends annual maintenance, or more frequently if required by applicable legislation, to be performed by an authorised installer or service agent. Key maintenance tasks include:
- Temperature and Pressure Relief Valve: Check for correct operation by manually operating the valve to ensure free water flow through the discharge pipe.
- Inlet Control Group: Inspect the integral line strainer, pressure reducing valve cartridge, and seating. Cleaning the strainer element and cartridge under clean running water is recommended. Replace components if damaged. The pressure reducing valve can be calibrated if replaced.
- Descaling: Depending on water quality and set temperature, scale can deposit on the heat exchanger. Descaling may be required at certain intervals.
- Chemical Disinfection: If required by legislation, chemical disinfection should be performed using a non-chloride based disinfection product approved for human consumption, ensuring water quality compliance with EU directive 98/83 EC.
- Switch Box: Conduct a thorough visual inspection for loose connections or defective wiring and check the operation of the contactor K3M.
- Pressure Relief Valve Hose: Check condition and routing to ensure proper drainage.
- Booster Heater: To extend its lifespan, especially in hard water regions, it is recommended to drain the tank, remove the booster heater, and immerse it in a lime-removing product for 24 hours.
- Draining the Cylinder: Instructions are provided for safely draining the cylinder, including isolating the immersion heater, connecting a hose to the drain connection, and opening a hot tap to prevent vacuum.
The manual also includes a "Service Record Log Book" for installers to document maintenance activities, serving as a commissioning certificate and evidence of compliance with Building Regulations. Failure to complete this logbook may invalidate the cylinder's warranty. Troubleshooting guides are provided for common issues such as cold water from hot taps, intermittent water discharge, and continuous water discharge, offering possible causes and corrective actions.
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