# Connection kit for Vaillant VIH R 120 (model 305956) for domestic hot water and heating systems

**URL:** https://aio.lv/en/product--vaillant-305956--11888134
**Data updated:** 2026-03-09 21:12 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Vaillant
**Manufacturer code:** 305956
**EAN:** 4024074438435
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 78.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 64.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--vaillant-305956--11888134

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Connection kit for Vaillant VIH R 120 (MPN 305956) designed to link the VIH R 120 unit into domestic hot water and central heating installations. The kit includes factory-specified fittings and connectors matching the VIH R 120 interface, enabling secure hydraulic and potable water connections. Intended for professional installers integrating the Vaillant unit into residential or small commercial systems.

## Long description

The Connection kit for Vaillant VIH R 120 provides the necessary fittings and connectors to integrate the VIH R 120 unit into domestic hot water and central heating systems. Designed to match the hydraulic and potable water interfaces of the VIH R 120, the kit supplies factory-specified components that ensure correct alignment and compatibility with the unit when installed by a professional.
Advantages
The kit includes preselected connectors and fittings that correspond to the VIH R 120 interface, reducing on-site adaptation time and ensuring proper hydraulic sealing. Components are designed for potable water compatibility and reliable thermal performance within typical residential and small commercial heating systems. By providing matching parts, the kit simplifies installation logistics and helps maintain system integrity when combining the VIH R 120 with existing piping and ancillary equipment.
Suitable for
Integration of a Vaillant VIH R 120 into domestic hot water systems
Connection of the VIH R 120 to central heating circuits in residential properties
Use by professional heating installers and service technicians during system replacement or new installations
Key specifications
Set of factory-specified fittings and hydraulic connectors matched to the VIH R 120 interface
Components suitable for potable water contact
Materials selected for standard residential heating temperatures and pressures
Includes connectors for hot water and heating circuit connections as required for VIH R 120 integration
How to use
Installation of the connection kit should be carried out by a qualified heating engineer in accordance with local regulations and the VIH R 120 installation manual. Verify system shutdown and depressurisation before starting work. Fit the supplied connectors and fittings to the VIH R 120 unit following the unit’s port identification and torque specifications. Ensure all potable water connections are flushed and inspected for leaks before commissioning the system. After mechanical installation, complete required electrical and control wiring per the boiler documentation and perform standard commissioning and safety checks.
Usage recommendations
Use this connection kit only with the Vaillant VIH R 120 model it is designed for; confirm compatibility with the specific installation scenario and consult the VIH R 120 technical manual. Where water quality or system conditions differ from typical residential installations, evaluate component suitability and consider additional water treatment or protective measures.

## FAQ

### How much does the Connection kit Vaillant VIH R 120 (305956) cost, and is it available for purchase?

The price is 78.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 20.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Connection kit Vaillant VIH R 120 (305956) be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Vaillant products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Vaillant service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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