# Controller for heating installation TECH TSSTI1CWU — supports 1 actuator and one DHW circuit

**URL:** https://aio.lv/en/product--tech-tssti1cwu--11867787
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Control Systems
**Manufacturer:** TECH
**Manufacturer code:** TSSTI1CWU
**EAN:** 5902479661674
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 254.99 €
**Prices and availability valid until:** 2026-07-10 23:59
**Price without VAT (21%):** 210.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-tssti1cwu--11867787

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

TECH TSSTI1CWU controller designed for heating installations, providing control for one actuator (siłownik) and one domestic hot water (DHW/CWU) circuit. It manages basic on/off or modulating actuator signals and coordinates DHW production, suitable for single-zone residential systems or small installations requiring dedicated hot-water control. Easy integration with existing heating equipment.

## Long description

The TECH TSSTI1CWU controller is designed for heating installations that require control of one actuator and a dedicated domestic hot water (DHW) circuit. It handles basic on/off and modulating actuator signals and coordinates DHW production, enabling streamlined management of heating and hot-water demands in single-zone residential systems or small installations. The unit is intended for integration with existing boilers, pumps and zone valves to provide reliable switching and control of one heating actuator together with a separate hot-water circuit.
Advantages
This controller supports both on/off and modulating signals for a single actuator while also providing dedicated control for a DHW circuit, which simplifies wiring and system layout for small installations. Its functional design makes it suitable for retrofit and new-build scenarios where straightforward coordination between space heating and hot-water production is required. The device facilitates clear separation of heating and DHW control, helping to maintain desired temperatures and operational efficiency without complex configuration.
Suitable for
Single-zone residential heating systems with a single actuator
Small commercial or utility installations needing one DHW circuit
Retrofit projects integrating with existing boilers, pumps or zone valves
Systems requiring simple on/off or basic modulating actuator control
Key specifications
Control capability for one heating actuator (on/off or modulating)
Dedicated control output for one domestic hot water (DHW) circuit
Designed for single-zone or small multi-function installations
Compatibility with standard boiler, pump and valve control interfaces
Compact form factor suitable for integration into control panels
How to use
Install the controller in a suitable enclosure and connect power, the heating actuator and the DHW circuit outputs according to the system wiring diagram. Configure the actuator signal type (on/off or modulating) as required by the attached actuator and verify correct response to boiler and pump signals. Ensure safe electrical connections and follow local installation standards. After wiring, perform system tests to confirm that the actuator operates correctly and that DHW production is coordinated with the heating source.
Usage recommendations
For reliable operation, use the controller with compatible actuators and follow the manufacturer’s wiring and installation guidelines; verify that the actuator signal mode matches the device settings and perform commissioning checks to ensure proper DHW priority and temperature control.

## FAQ

### How much does the TECH TSSTI1CWU heating controller — 1 actuator + DHW cost, and is it available for purchase?

The price is 254.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 02.07.2026 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 TECH TSSTI1CWU heating controller — 1 actuator + DHW 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 TECH 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 TECH 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

https://aio.lv/img/cache/product/11867787/67274154_large.webp