# Control unit stiebel eltron VLR 70-2 CU — controller set for 2 VLR 70 L Trend units

**URL:** https://aio.lv/en/product--stiebel-eltron-239570--11867872
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Control Systems
**Manufacturer:** stiebel eltron
**Manufacturer code:** 239570
**EAN:** 4017212395707
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Control unit stiebel eltron VLR 70-2 CU is a controller set designed to manage two VLR 70 L Trend units. It provides centralized operation, coordination of functions and status monitoring for paired ventilation or heat recovery devices. Ideal for installations requiring synchronized control of two VLR 70 L Trend units, enabling reliable operation and simplified maintenance.

## Long description

The control unit stiebel eltron VLR 70-2 CU — controller set for 2 VLR 70 L Trend units is a dedicated controller designed to manage and coordinate two VLR 70 L Trend ventilation or heat recovery units. It centralizes operation, synchronizes fan speeds and modes, and provides status monitoring to ensure consistent performance of paired devices in residential or light-commercial installations. The controller set supports simplified wiring and centralized adjustment of key operating parameters for the two connected units.
Advantages
The controller set enables synchronized control of two VLR 70 L Trend units, reducing the need to operate each unit separately and ensuring balanced airflow and heat recovery across connected spaces. Centralized monitoring and control simplify commissioning and routine maintenance by providing a single point of configuration. The design is intended to integrate with existing VLR 70 L Trend units, maintaining manufacturer-compatible control logic and preserving system functions such as mode selection and status indication.
Suitable for
Paired ventilation systems in apartments or houses where two VLR 70 L Trend units serve adjacent zones
Light-commercial spaces requiring coordinated heat recovery across two units
Installations where centralized control and simplified maintenance of two units is preferred
Key specifications
Controller type: centralized controller set for two VLR 70 L Trend units
Functionality: synchronized operation, mode coordination and status monitoring of connected units
Connectivity: dedicated interfaces compatible with VLR 70 L Trend unit controls (manufacturer-specific wiring)
Installation: wall- or panel-mountable control unit intended for indoor electrical cabinets or service areas
Operating environment: designed for typical residential and light-commercial HVAC installation conditions
How to use
Mount the control unit in an accessible indoor location near the paired VLR 70 L Trend units or their service access points. Connect each VLR 70 L Trend unit to the controller using the manufacturer-specified wiring and connectors, observing polarity and termination instructions supplied by the unit manufacturer. After electrical and control wiring is complete, power the system and use the controller interface to configure synchronized modes, fan speeds and monitoring parameters so both units operate in a coordinated manner. Verify status indicators and perform functional tests for airflow and heat recovery performance.
Usage recommendations
Use the control unit together with two VLR 70 L Trend units from the same manufacturer to ensure full compatibility. Follow installation and safety instructions provided by stiebel eltron and have a qualified technician perform electrical connections and initial configuration. Regularly check status indicators and perform scheduled maintenance on the connected ventilation units to preserve system performance.

## 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 stiebel eltron 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 stiebel eltron 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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