374e stand alone heating controller controls three different water temperatures

(02/05/2008)

Kanmor have launched the new 374e universal heating controller. UK distributor Radiant Control Ltd., claims it is the ultimate ‘stand alone’ heating controller which will cope with typical light commercial heating applications and offers the end-user a number of significant benefits.

The 374e has built-in weather compensation technology which automatically varies the target water temperature dependent upon outside ambient conditions, offering significant fuel savings while providing optimum comfort to the occupants.

It is also one of the only stand alone controllers on the market to control three different water temperatures. At its design condition of minus 3 degrees outdoor temperature the system will, for example, heat the primary water circuit for the radiators to 75 degrees C, supply water at 60 degrees to a timber joisted underfloor heating circuit and at 50 degrees for screeded underfloor heating.

When ambient temperature is milder, the controller operates in line with its characteristic curve and the heating water temperatures will be reduced to compensate for outdoor conditions. Temperature control of the secondary circuits is achieved by modulating two mixing valves which will have three or four ports depending on the system design.

What’s more, the 374e has been designed to control two boilers. If boiler 1 fails to bring the water temperature to target within a pre-set time, boiler 2 is automatically fired, improving efficiency and reducing fuel cost. Each boiler is automatically rotated, typically every 48 hours of burner running time, ensuring even wear and tear on both boilers. Boiler life and service intervals are thereby extended, reducing maintenance and replacement costs.

The 374e also controls the domestic hot water system and manages this at 80 degrees C.

Related categories:  Commercial and offices applications   Heating controls   Hot water generation and supply 

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