# Temperature limiter RTL straight 15 m² Heimeier 9174-02.800

**URL:** https://aio.lv/en/product--heimeier-9174-02800--4862580
**Data updated:** 2026-03-07 15:03 (EET)
**Category:** Other goods
**Manufacturer:** Heimeier
**Manufacturer code:** 9174-02.800
**EAN:** 4024052285914
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Heimeier RTL straight return temperature limiter for heating systems, model 9174-02.800, designed for a 15 m² application. The device monitors and limits return water temperature to protect system components and improve balance. Suitable for installation on straight pipe runs in residential or light commercial heating circuits to prevent excessive return temperatures and ensure stable operation.

## Long description

Heimeier RTL straight 15 m² is a return temperature limiter intended for use in heating circuits where control of return-water temperature is required to protect components and improve hydraulic balance. The RTL straight unit is designed for installation on straight pipe runs and monitors the return temperature, limiting it to a preset value appropriate for a 15 m² heating area. It is suitable for residential and light commercial systems where excessive return temperatures can reduce system efficiency and lifespan.
Advantages
The device provides continuous monitoring and automatic limiting of return-water temperature to reduce thermal stress on boilers, heat generators and radiators. Its straight-connection design simplifies installation on linear pipe sections and reduces the need for additional fittings. By stabilizing return temperatures the limiter helps maintain better hydraulic balance and can contribute to more consistent indoor temperatures and reduced wear on components. The construction follows practical standards for heating-system accessories and is compatible with common installation practices.
Suitable for
 Residential central heating circuits with up to approximately 15 m² heat emitter area
 Light commercial heating installations with straight pipe runs
 Systems requiring protection of heat sources and components from high return-water temperatures
 Applications where hydraulic balance and more consistent radiator performance are desired
Key specifications
 Type: return temperature limiter for straight pipe installation
 Application size: designed for approximately 15 m² heat emitter area
 Function: monitors and limits return-water temperature to protect system components
 Installation position: straight run on return pipework
 Compatibility: suitable for residential and light commercial heating circuits
How to use
Install the RTL straight unit on the return pipe at a location representative of the circuit return temperature, following local plumbing and heating regulations. Connect and secure the device so that the sensing element is exposed to the flow in the return line; ensure proper alignment with the direction of flow where applicable. Commission the system according to the heating installer’s guidelines, verify that the limiter is functioning by monitoring return temperatures during different operating conditions, and adjust associated control settings on the heat source as required.
Usage recommendations
Position the limiter where it measures a representative return temperature, avoid installation immediately adjacent to heat sources or mixing points that could distort readings. Periodically inspect connections and the sensing element during routine maintenance to ensure reliable operation. For best results, coordinate limiter settings with system controls and balancing valves so that limiting return temperature does not conflict with required comfort levels or system safety functions.

## 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 Heimeier 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 Heimeier 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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