Control modules for use with RC35 and BMS

RC35 control modules

The RC35 is compatible with several individual control modules that are easily wired into the connections on the try underneath the GB162. These modules extend the functionality of the RC35 and GB162 considerably, providing control for low loss headers, solar and additional mixed heating circuits. All wiring has colour coded plugs for quick installation into the main control unit.

WM10 low loss header module

For use with Gb162 boilers and heating systems with a low loss header, the WM10 controls one unmixed heating circuit. The WM10 is always necessary when adding modules.

The flow temperature is controlled by weather compensation heating control in conjunction with the RC35 either mounted in the boiler or as room temperature sensor and wall mounted bracket. it is only possible to use one WM10 module per control system.

MM10 mixed heating circuit module

For heating systems with additional mixed or unmixed heating circuits. This module controls a rotary mixing valve and has a sensor to control flow temperature when used in conjunction with RC35 controller. It is also possible to connect to an RC25 remote control for room temperature compensation, contact technical support for further information. Up to 3 modules can be used per heating system.

SM10 solar circuit module

For use with GB162 boilers with RC35 controller. The SM10 fully controls a solar thermal system for DHW preparation. This module is linked into the boiler control and automatically supervises the DHW back up by the boiler in relation to the available solar energy. When there is heat available from the solar collectors the controller will prevent the boiler from firing to optimise the use of free solar energy.

Single boiler cascade installations with BMS (Building or Energy Management System)

The EM10 module is used in GB162 boilers and interfaces with an existing BMS. It can create a fault report, 230V signal or a volt free fault signal. It has a 0-10V contact for signals from the BMS to control boiler flow temperature. Diagram Fig 1. shows control options compatible with BMS.

MCM10 cascade sequencer

The MCM10 simplifies the optimum running of a cascade system when interfacing with an existing BMS. The MCM10 sequences the lead boiler to eliminate excessive wear in any one unit but it also interprets the 0-10V input signal from the BMS modulate the heat output of the cascade. This is all achieved without the need for a programming or complex set up. It is a true ‘Plug and Play’ control. An individual MCM10 can control up to 4 boilers and up to 16 boilers when 4 units are linked together.

Fig. 1. Compatible BMS controls

The benefits of weather compensation

The RC35 controller can change the required temperature for different heating circuits according to the outside temperature, which is measured using a small external sensor. With mixed heating circuits this means that each individual circuit has its own characteristics and the boiler will supply only the heat needed for certain parts of the system. This is particularly effective in Spring and Autumn as temperatures for the heating circuits can be reduced significantly to save fuel and get highest efficiency from the condensing process.

The heating curve on the graph above can be modified at any time using the RC35 controller to provide maximum comfort for the user.