Powrmatic’s new MC 300 ‘Multi’ digital controller enables the control of multiple numbers of cabinet and unit air heaters and features optimum start/stop with weather compensation, adjustable frost protection, remote burner reset and summer fan-only operation as standard.

Thanks to the slave units being factory fitted within each heater prior to delivery, the MC300 ‘Multi’ delivers significant savings on the time and cost of installation. Further cost reductions are achieved through the use of low voltage control wiring (5-core for on/off, 6-core for high/low, 7-core for modulating units).

An easy-to-use interface facilitates setting of a variety of time and temperature programs, as well as the ability to adjust temperature within controlled boundaries if required. MC300 Multi software provides up to 14 time settings, each of which can be assigned to any single day of the week, or in groupings such as weekdays or weekends. There are two levels of password -controlled access, one for users and the other for commissioning and servicing engineers.

The control interface also provides a read-out of burner operation hours to help determine servicing intervals and can provide an indication of the running costs of the system, when programmed with the appropriate data.

Multiple Connectivity

When controlling multiple heaters the MC300 Multi acts as the master unit and communicates with a factory-fitted PCB on each of the ‘slave’ heaters it controls, thereby reducing the cost and time of installation. Further cost reductions are achieved through the use of low voltage control wiring (5-core for on/off, 6-core for high/low, 7-core for modulating units).

Flexibility

The MC300 has the ability to set a variety of time and temperature programs, whilst still enabling the user to adjust the temperature within controlled limits if required and adjustable frost protection against low temperatures. The MC300multi also allows for remote burner fault reset, and summer fan only operation.

Economy

Optimum start technology continually monitors the heating system’s previous performance to determine the optimum time to turn heating on to ensure set point temperatures are achieved at the required time, taking account of ambient temperatures. Optimum stop can also be used to save energy at the end of the heating period.

Security

The MC300 features password-controlled access, This can be locked in various combinations to allow different levels of password-controlled access for different users. There are two levels of password-controlled access, the second level being for use by commissioning and servicing engineers. This provides access to parameters normally used only in the initial setting of the controller, accessing the fault log and resetting the system

Ease Of Use

The MC300 Multi features an easy-to-use interface for selection of heating and fan-only modes, override functions and full reset. These can be locked in various combinations to allow different levels of password-controlled access for different users.

Location

When used with a remote sensor the MC300 Multi can be sited wherever is convenient, such as in a manager’s office. If used with its internal temperature sensor, the unit should be located in a spot that is generally representative of the area to be heated. In such cases it should be sited 1.7m above floor level away from draughts and direct sources such as sunlight or heat emitters. It should also be in an easily accessible position for programming and operation.