# Thermal protection for boiler Watts Italia STS 20 with 130 cm capillary (model 0232120)

**URL:** https://aio.lv/en/product--watts-italia-0232120--12234663
**Data updated:** 2026-03-29 16:21 (EEST)
**Category:** Home Appliance Accessories
**Manufacturer:** Watts Italia
**Manufacturer code:** 0232120
**EAN:** 8019001010149
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Thermal protection device for boilers — Watts Italia STS 20 (model 0232120) with a 130 cm capillary. Provides temperature monitoring and automatic safety shutdown to prevent overheating of heating systems. Designed for installation on domestic and commercial boilers; used as an overtemperature cut-out to protect heat exchangers, pumps and boiler components during fault conditions.

## Long description

The Watts Italia STS 20 thermal protection with a 130 cm capillary is a temperature safety device engineered for domestic and commercial boilers. It monitors water or system temperature and triggers an automatic safety shutdown when preset limits are exceeded, reducing the risk of damage to heat exchangers, pumps and other boiler components. The unit is suitable for integration into existing boiler control arrangements where an overtemperature cut-out is required.
Advantages
This thermal protection device offers precise temperature sensing through its capillary probe, reliable automatic interruption of boiler operation at excessive temperatures and compact construction for straightforward installation. Its design focuses on dependable operation in fault conditions, helping to safeguard critical hydraulic and heat transfer components without requiring complex wiring or controls.
Suitable for
Domestic central heating boilers
Commercial small-scale heating systems
Protection of heat exchangers and circulation pumps
Retrofit safety upgrades and maintenance replacements
Key specifications
Function: overtemperature cut-out / thermal safety switch
Capillary probe length: 130 cm
Application: boiler temperature monitoring and automatic shutdown
Mounting: panel or boiler body integration with probe placement in thermal mass or sensor pocket
Electrical interface: single-function safety output compatible with standard boiler control circuits
How to use
Install the capillary probe in the boiler’s designated sensor pocket or securely fasten it to the heat exchanger or pipework where representative temperature measurement is achieved. Connect the device to the boiler control wiring following the boiler manufacturer’s wiring diagram and ensuring power is isolated during installation. Set or confirm the operating threshold according to system requirements and test the safety cut-out by simulating an overtemperature condition or following the commissioning procedure specified by the boiler maker.
Usage recommendations
Position the capillary probe where it measures the medium temperature most accurately and avoid tight bends that can damage the capillary. Verify electrical connections and insulation regularly, and include this thermal protection in routine boiler maintenance checks to ensure reliable operation during fault conditions.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### 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 Watts Italia 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 Watts Italia 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

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