VPA 450/300 - Boiler Nibe - Free user manual and instructions
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| Product Type | Hot water tank (boiler) for heat pump systems |
| Brand | Nibe |
| Model | VPA 450/300 |
| Capacity | 450 liters |
| Dimensions (H x D) | 1900 mm x 750 mm |
| Empty Weight | 180 kg |
| Filled Weight | 630 kg |
| Insulation | Polyurethane foam, CFC-free |
| Inner Lining | Enameled steel |
| Max Operating Pressure | 10 bar |
| Max Operating Temperature | 95°C |
| Optional Immersion Heater | Maximum 9 kW |
| Heater Power Supply | 400V, 3N~, 50 Hz |
| Thermal Performance | Low standby losses |
| Compatibility | Nibe heat pumps and solar heating systems |
| Maintenance | Inspect magnesium anode annually |
| Safety Devices | Safety valve and temperature limiter |
| Spare Parts | Available from Nibe authorized dealers |
| Repair | Repairable by qualified technician |
| Installation | Indoor, freestanding |
| Certifications | CE marked |
Frequently Asked Questions - VPA 450/300 Nibe
What is the Nibe VPA 450/300 used for?
The VPA 450/300 is a hot water tank designed for use with Nibe heat pumps. It provides domestic hot water and additional buffer storage to optimize system efficiency.
How often should the magnesium anode be replaced?
Inspect the magnesium anode annually and replace it when worn, typically every 2-3 years. It prevents internal corrosion and prolongs the tank's lifespan.
What is the maximum operating pressure?
The tank can safely operate at a maximum pressure of 10 bar. The safety valve must be set to this value and tested regularly.
Can I install the VPA 450/300 myself?
Installation must be carried out by a certified technician to ensure correct connection to the heat pump system, compliance with local building codes, and safe operation.
How do I drain the tank?
To drain the tank, first disconnect the power supply and shut off the water inlet. Then open the drain valve located at the bottom of the tank and allow water to flow out.
What temperature should the hot water be set to?
The recommended set temperature is 55-65°C. This range prevents bacterial growth such as Legionella while maintaining energy-efficient operation.
Does the VPA 450/300 work with solar panels?
Yes, when fitted with an optional solar coil, the tank can be connected to a solar heating system. This helps preheat water and reduces overall energy consumption.
How do I recognize a failing safety valve?
A failing safety valve may show continuous dripping, leaking, or fail to reseat after testing. You can test it by gently turning the valve knob; if water does not stop flowing, replace the valve immediately.
What type of immersion heater can be used?
An optional heating element up to 9 kW can be inserted into the tank's flange. This provides auxiliary heating when the heat pump alone is insufficient, such as during peak demand.
What is the standby energy loss?
The VPA 450/300 features thick polyurethane insulation that minimizes standby losses. This keeps stored water hot for longer periods and reduces unnecessary heating cycles.
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USER MANUAL VPA 450/300 Nibe
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Product information
Brand : Nibe
Model : VPA 450/300
Category : Boiler