NRG LEX System Control Module

115.00

The NRG LEX System Control Module is a pre-configured electrical wiring centre for controlling boilers & heating zones which allows for rapid system construction, total flexibility, complete reliability and reduces installation time & costs in any new-build or retrofit central heating project.

Description

The NRG LEX System Control Module eliminates the tedious and complex wiring tasks associated with a modern central heating system. The module links all the electrical components in a simple and efficient way.

FEATURES

  • 4 temperature control zones, each with time and temperature control inputs as well as LED indicators, which can control a circulation pump or motorised valve.
  • 2 boiler control systems (linked to the 4 temperature control zones), each with 3A power supply and volt-free switch contacts, to switch power supply to boiler(s).
  • 2 auxiliary relays, activated by any of 4 inputs, and each with normally-open and normally-closed contacts.
  • 1 frost thermostat input to activate boiler relays when the ambient temperature gets dangerously low. (This can also be used to join boards for projects with 5 or more zones)

BOILER RELAY FUNCTION
When mains (230V) is supplied to the stat switched input terminal (See wiring diagram overleaf) in one or more of control zones A, B, C or D, the boiler relay is enabled, closing the Boiler1 and Boiler2 contacts. The mains/live supply to the boiler(s) can be switched through these contacts.

AUXILIARY RELAY FUNCTION
When mains (230V) is provided to any of the four Auxiliary Inputs 21, 22, 23 & 24 the two volt-free Auxiliary Relay contacts 15, 16, 17 and 18, 19, 20 are switched. See wiring diagram overleaf

FROST THERMOSTAT FUNCTION
When mains (230V) is supplied to the live terminal 9 of the Frost Input the boiler relay is enabled, closing the Boiler1 and Boiler2 contacts.

PRIORITISE SOLID FUEL OVER CONVENTIONAL OIL OR GAS BOILER
This unit has the ability to prioritise a solid fuel input through temperature control and can keep an oil or gas boiler from firing up automatically in the process, utilising energy efficiently.

SPECIFICATIONS

  • Operating Voltage – 230V AC 50HZ
  • Temperature Control Zones – 4
  • Circulating pump supplies – 4 (1 per zone)
  • Boiler Power Supply – 5 amps (2 boilers)
  • Boiler Control relays – 2
  • Aux. relay contacts (NO & NC) – 2
  • Auxiliary inputs – 4
  • Frost input – 1
  • Enclosure rating – IP20

Features

The Easiest and Safest Way To Inter-Connect Sealed & Open Heating Systems

  • Eliminate complex wiring tasks associated with central heating systems
  • Wire all the system electrical components in a simple and efficient way
  • Up to 4 Zones with time & temperature pre-configured connections
  • 1 frost thermostat input facility for boiler area protection purposes
  • Built-in LED for boiler or zone indication or fault-finding functions
  • Independent volt free switching for 2 boilers based on zone call
  • Fully identified and easy-to-follow wiring connection terminals
  • Independent fusing for zone controls and boilers
  • 4 isolated inputs to an auxiliary double pole relay
  • Perfect for single boiler or inter-link systems