vaillant 23443 Heat Pumps Instruction Manual

: June 17, 2024
: Vaillant

Table of Contents

vaillant 23443 Heat Pumps
Product Information
Product Usage Instructions
Installing a heat pump
Keeping your heat pump happy
More information and funding
Read User Manual Online (PDF format)
Download This Manual (PDF format)

vaillant 23443 Heat Pumps

Product Information

Heat Pumps

Specifications

Heat pump type: Air source
Indoor components: Hot water storage cylinder, buffer tank (if required)
Radiator connection: Requires suitable pipework for good flow
Flow temperature: Lower than fossil fuel boiler system
Compatibility: Suitable for underfloor heating and radiators
Expected lifespan: Over 15 years with regular servicing

Product Usage Instructions

Assessing Home Efficiency
Before replacing your heating system with a heat pump, ensure your home is as energy-efficient as possible:

Reduce heat escaping your home
Fill cavity walls (if applicable)
Insulate loft to a high standard
Install double or triple glazed windows

For more information on improving home efficiency, visit the Energy Savings Trust website.

Choosing Installation Location
If you choose an air source heat pump, it needs to be installed outside in your garden, close to your house.

Indoor components require space:

Hot water storage cylinder for providing hot water
Possible buffer tank depending on system requirements

Connecting Radiators

Proper pipework connection is crucial for heat pump efficiency:

Ensure good flow to the radiators
Your installer will assess and check the suitability of existing pipework
Insulating your property is important for optimal performance

Adjusting to Lower Flow Temperature

A heat pump system operates at a lower flow temperature compared to fossil fuel boiler systems:

Compatible with underfloor heating and radiators
Radiators may feel cooler to the touch, but this is normal
Your installer will optimize the heat pump’s performance for required comfort levels

FAQ – Frequently Asked Questions

What is a heat loss calculation?
A heat loss calculation is a survey and assessment of the building to determine the appropriate size of heat pump and heating system based on the heating and hot water requirements of the property.

How long should a well-installed heat pump last?
A well-installed heat pump should last over 15 years with regular servicing.

Where can I find more information about heat pumps?
Visit www.vaillant.co.uk for more information about heat pumps. You can also find a local installer for your heat pump system on the website.

Are there any grants available for heat pump installation?
Please refer to www.vaillant.co.uk for information on available grants.

Is there anything else that should be considered?
For more specific inquiries or technical assistance regarding the product and renewable service, you can contact Vaillant’s Technical Enquiries through aftersales@vaillant.co.uk.

Installing a heat pump

Replacing a fossil-fuelled boiler or direct electric heating system with a heat pump is a considered purchase.

Some key points to think about are:

Have I reduced the heat escaping my home as much as reasonably possible?
Has the cavity wall been filled (if applicable)?
Has loft insulation been completed to a high standard?
Are my windows double or triple glazed?

Before replacing your heating system you should make sure you have made your home as efficient as possible first.
Find out more at the Energy Savings Trust website.

vaillant-23443-Heat-Pumps-1

Keeping your heat pump happy

It is important that your installer thoroughly assesses the heating and hot water requirements of the property to select the correct size of heat pump and heating system, and get the best performance.
They will need to complete a survey and heat loss calculation of the building to do this.

What is a heat loss calculation?
The installer will visit you to review and assess the fabric of your property, using a calculation method called MIS 3005 to complete a room-by-room heat loss calculation.
This will show how much heat each of your home’s rooms require to keep warm in the middle of winter – this is known as the peak heating requirement.
The installer will then recommend any changes to your system, possibly replacing radiators, the size of hot water cylinder and the size of the heat pump your property needs to keep you warm and comfortable.

With regular servicing, a well installed heat pump should last over 15 years.

More information and funding

Where can I go to find out more information about heat pumps?
Homeowners considering a heat pump should review www.vaillant.co.uk for more information and if they wish to go ahead quickly, they can find a local installer for their heat pump system.

What grants are available?
The Boiler Upgrade Scheme (BUS) grant, launched in April 2022 has been increased to £7,500 to enable homeowners money off heat pump installs in England & Wales. The increased support will be available from 23rd October 2023. The scheme is expected to run until 2028.

Will the £7,500 grant cover all costs, including installation?
Once your installer has completed the site survey and completed the MIS 3005 calculations they will be able to offer you a quote.
Currently, it is unlikely that the £7,500 will cover the full costs of your new heating system installation.
This will vary from home to home and the amount of work required, however, you should be prepared to make a contribution to your heat pump system.

Is there anything else that should be considered?
Heat pumps are an effective heating solution for many UK houses including older properties as well as new builds. A fabric first approach is best practice to ensure a heat pump delivers the domestic hot water and comfort levels required. Speak with your installer as well as visiting the Energy Savings Trust website to see what improvements you can make to make your home low carbon ready.
Heat pumps run at a lower flow temperature than that of a fossil fuel boiler, between 45-55°C in the radiators where as a boiler would normally run at 60-70°C. Your installer will check the radiators in the property, to ensure that they are the correct size to keep the home comfortably warm with the lower flow temperatures.

Heat pump possible?
Vaillant in 2023 helped demystify the process of heat pump installation, and how modernising with a heat pump has benefited homeowners in a wide variety of homes.

All of the properties that are part of our heat pump possible project are located in the UK. Scan the QR code to see all of the winners.

Vaillant Group UK Ltd
Nottingham Road
Belper, Derbyshire
DE56 1JT
www.vaillant.co.uk
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Useful contacts

Technical Enquiries
For technical assistance and renewable service: