ELTERM Low-Loss Header SHE 2.5" – 420 kW

High-Performance Hydraulic Balancer | 24 m³/h | 10 Bar | Mild Steel

Product Overview

The Low-Loss Header (Hydraulic Balancer) is engineered to separate the boiler circulation from the heating system, ensuring stable and efficient operation in medium- to high-power installations ranging from 25 kW to 420 kW.
It is suitable for single or multiple boilers and supports various heating circuits such as radiators, underfloor heating, and domestic hot water (DHW).


Key Functions & Benefits

1. Automatic Flow Separation

Ensures independent operation of boiler and heating circuits—eliminating the need for manual pump balancing.

2. System Cleaning & Air Removal

Built-in desilter and air vent improve system cleanliness, remove trapped air, and increase overall efficiency and reliability.

3. Boiler Protection

Maintains appropriate return water temperature to prevent low-temperature corrosion, extending boiler lifespan.


Operational Modes

  • Demand = Boiler Output: System functions in full equilibrium.

  • Demand < Boiler Output: Excess heat returns through the LLH, signalling the boiler to reduce output or shut down.

  • Demand > Boiler Output: Increased pump suction prompts the boiler to raise its heat output.


Technical Specifications – SHE 2.5" Flanges

  • Maximum flow: 24 m³/h

  • Maximum power: 420 kW

  • Connections: 4 × 2.5" flanges

  • Nominal pressure: 10 bar

  • Maximum temperature: 110°C

  • Internal capacity: 19.7 litres


Advantages for Investors

  • Up to 30% longer boiler lifetime due to reduced thermal stress

  • Improved comfort thanks to desiltering and automatic air removal

  • Up to 30% longer pump lifespan

  • Faster boiler reaction time in variable load conditions

  • Up to 50% cost savings vs. traditional 3- or 4-way valves

  • No hydraulic regulation required

  • Minimises air-locking issues and system failures


Variants Available

  • SHE Series: 40–750 kW

  • SHE-OC (Insulated): PUR foam + leatherette insulation for 40–156 kW

    • Larger units (up to 750 kW) available with ROCKWOOL insulation on request


Summary

The ELTERM SHE 2.5" Low-Loss Header ensures efficient, balanced, reliable heating system performance, reduces maintenance needs, and extends equipment lifespan. It's a long-term, cost-effective solution that enhances both comfort and system stability.