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7

user’ manual

Auto button - Temperature adjustment activation

The  AUTO  function  enables  boiler  operation  to  be  adapted  to 

environmental conditions and to the type of system it is installed 

on. 

Comfortable temperature is reached inside the room in the quickest 

way possible, without wasting money, energy or efficiency, while 

substantially  reducing  the  amount  of  wear  experienced  by  the 

components.

Your installer will advise you on the devices connectable to 

the boiler and will program it according to the system.

In normal boilers the water temperature inside the heating elements 

is usually set to a high value (70-80°C), thereby ensuring effective 

heating  during  the  few  really  cold  winter  days.  It  then  becomes 

excessive on less cold days (of which there are many) more typical 

of  the  autumn  and  winter  seasons. This  leads  to  excessive  room 

heating  after  the  thermostat  has  been  switched  off,  resulting  in 

energy waste and uncomfortable conditions inside the room.

The AUTO function “takes control” of the boiler and selects the best 

operating  regime  based  on  environmental  conditions,  external 

devices connected to the boiler and the performance required. It 

constantly decides at which power level to operate based on the 
environmental conditions and the room temperature required.

Change of gas type 

Our boilers are designed to function either with Natural Gas (meth-

ane) or L.P.G. gas. If you need to change from one gas to the other, 

one of our Authorised Service Centres must be contacted to con-

vert the appliance.

Maintenance

Schedule an annual maintenance check-up for the boiler with a 

competent person.

Correct maintenance always results in savings in the cost of 

running the system.
Failure to arrange an annual service for the appliance will invalidate 
the second year of the manufacturers guarantee. 

Summary of Contents for CLAS HE 24

Page 1: ... wall hung system boiler G C N 47 116 51 24 kW G C N 47 116 52 30 kW G C N 47 116 53 38 kW CLAS HE CLAS HE 24 CLAS HE 30 CLAS HE 38 The code of practice for the installation commissioning servicing of central heating systems ...

Page 2: ... fault arises from within defects in the appliance caused either by material or workmanship of the manufacturer This guarantee does not protect malfunction or damage arising from incorrect installation commissioning or maintenance procedures as laid out in the installation and servicing manual inefficient flue system poor or incorrect electricicty wrong gas supply or pressure tampering by inexperi...

Page 3: ...abled burner anti freeze protection enabled The second and third figures indicate the flow temperature when no heating requests have been made the flow temperature in central heating mode the temperature of the hot water in domestic hot water mode the flow temperature in anti freeze mode Auto Function The AUTO function serves to optimise boiler performance while maintaining an optimum radiator tem...

Page 4: ...et the temperature of the heating water by adjusting the knob 6 By placing the indicator somewhere between min and max a temperature may be obtained which varies from about 20 C to about 45 C low temperature and about 35 C to about 82 C high temperature Domestic hot water temperature adjustement It is possible to set the temperature of the domestic hot water by adjusting the knob 11 a temperature ...

Page 5: ...t exchanger is kept warm for 30 mins 2 As soon as DHW is drawn the secondary heat exchanger is kept warm permanently This function may be enabled by pressing the COMFORT button Switching off the heating To switch off the heating mode turn the button 6 in the position The boiler switches in sanitary mode only and indicating the set temperature Stand by To switch off the boiler press the ON OFF 13 S...

Page 6: ...water leak at some point in the system If this is the case please contact your installer and ask them to check it Operation shutdown This type of error is non volatile which means that it is not removed automatically The display will flash Err and the error code and the red led lights up 3 In this case the boiler does not restart automatically but it may be reset by pressing the button If the prob...

Page 7: ...This leads to excessive room heating after the thermostat has been switched off resulting in energy waste and uncomfortable conditions inside the room The AUTO function takes control of the boiler and selects the best operating regime based on environmental conditions external devices connected to the boiler and the performance required It constantly decides at which power level to operate based o...

Page 8: ...rk 2 High Wycombe Ballycoolin Bucks HP13 5FT Dublin 15 Telephone 01494 755600 Telephone 01 810 3723 Fax 01494 459775 Fax 01 810 3727 Internet www mtsgroup com uk Internet www mtsgroup com ie E mail info uk mtsgroup com E mail info ie mtsgroup com Technical Advice 0870 241 8180 Technical Advice 01 437 0121 Customer Service 0870 600 9888 Customer Service 01 437 0121 ...

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