# DK System electronic draught regulator UNISTER 201303 for solid fuel boilers — controls air inlet flap and central heating pump

**URL:** https://aio.lv/en/product--dk-system-201303--11825873
**Data updated:** 2026-03-09 11:15 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** DK System
**Manufacturer code:** 201303
**EAN:** 5906715901470
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 180.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 149.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dk-system-201303--11825873

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Electronic draught regulator DK System UNISTER 201303 is designed for solid fuel boilers. The device controls the air inlet flap and the central heating (c.o.) pump to maintain optimal combustion and heat distribution. It interfaces with boiler sensors to adjust airflow and pump operation, improving temperature stability and operational safety in residential or small commercial heating systems.

## Long description

DK System electronic draught regulator UNISTER 201303 is a control device designed for use with solid fuel boilers. It manages the air inlet flap and the central heating pump to stabilise combustion and distribute heat more evenly. The regulator receives input from boiler sensors and adjusts actuator outputs to maintain target temperatures and safer operation in residential or small commercial heating setups.
Advantages
The regulator provides automated control of combustion air and pump operation, reducing the need for manual adjustments and helping to maintain steady boiler temperature. It integrates with existing boiler sensors and actuators to modulate airflow and pump cycling, which can improve fuel efficiency and reduce temperature fluctuations. The device is applicable to a range of solid fuel installations and is intended to enhance operational safety by preventing overheating and poor combustion conditions.
Suitable for
Residential solid fuel boilers requiring automated draught and pump control
Small commercial heating systems with a single heating circuit
Retrofitting older boilers to add electronic control of air inlet and pump
Installations seeking improved temperature stability and safer combustion
Key specifications
Function: automatic control of air inlet flap (draught regulation) and central heating pump
Inputs: interfaces with boiler temperature sensors for feedback control
Outputs: actuator control for air flap and relay control for heating pump
Application: designed for solid fuel boilers in residential and small commercial environments
Operating objective: maintain optimal combustion and heat distribution
How to use
Mount the regulator in a location close to the boiler control connections and follow the manufacturer’s wiring diagram to connect temperature sensors, air flap actuator and central heating pump. Configure setpoints and control parameters according to the boiler type and heating system characteristics so sensor feedback can be translated into appropriate air flap and pump actions. Verify correct actuator movement and pump switching during an initial test run and monitor boiler temperature to ensure the regulator maintains stable operation.
Usage recommendations
Ensure sensors are installed in representative locations on the boiler to provide accurate temperature readings, and use appropriate actuator and pump interfaces compatible with the regulator. Perform periodic checks of electrical connections and mechanical linkages to the air inlet flap, and follow local safety rules for fuel-burning appliances when adjusting control parameters.

## FAQ

### How much does the DK System UNISTER 201303 draught regulator for solid fuel boilers cost, and is it available for purchase?

The price is 180.49 € (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 15.07.2026 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 DK System UNISTER 201303 draught regulator for solid fuel boilers 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 DK System 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 DK System 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/11825873/67227483_large.webp