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Auto Pressurisation Systems

DM126 compact wall hung pressurisation system.

The compact but powerful wall hung pressurisation unit

RBM DM126 new digital compact wall mounted single pump pressurisation unit, cold fill pressure up to 2.6 Bar.

Incorporating; Auto pump anti-seize pulse, full sized peripheral pump, WRAS approved mains connection & digital LED system information display. Simple programme navigation. Low water cut out, service reminder. VFC – high pressure, low pressure, pump failure, low water, flood alarm & excessive starts.

All mechanical connections base mounted with optional left or right side electrical connections.

Features & Benefits

  • Digital LCD Display
  • Simple programme navigation
  • Fault log
  • Pump anti-seize pulse
  • System fill mode as standard
  • All mechanical connections on the base
  • Electrical connections either side
  • Low water cut out to prevent dry running
  • Service reminder
  • Flood alarm & pump test


What is a pressurisation unit?

A pressurisation unit performs three functions:

  1. It is a mechanical means to pressurise a system
  2. It controls the pressure increase resulting from heating the system water
  3. Provides volt free safety interlocks for protecting the plant

It’s designed to replace any water that has been lost through draining of or a leak in the system. RBM can supply the pressurisation unit to suit a wide range of applications and pressure requirements.

The DM/DS range of pressurisation units are highly efficient with easy control navigation that allows you to control your equipment effectively.

How does a pressurisation unit operate?

Our pressurisation units are used to monitor pressure. They are designed with the needs of domestic, commercial and industrial customers in mind- hence why they are easy to operate.

The heating pressurisation unit monitors the central heating or chilled water system pressure by means of a transducer and has a peripheral pump that generates water pressure. If the system pressure drops below the set point the pumps top the system up and if the pressure in the central heating system is too high or too low, the pressurisation unit can disable the circulating pumps and the boiler to eliminate damage.

When a leak occurs, the central heating pressurisation unit is used to replace the water and bring the pressure back to a rate where it’s safe to operate.

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