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1. General

1.1. The method of calculation for the heat loads is based on BS EN 12831:2003.
1.2. It is the responsibility of the user to ensure all data entered is correct.

2. Temperatures

2.1. All suggested internal design temperatures have been taken from the UK national annex BS EN 12831:2003.
2.2. It is the responsibility of the user to select an appropriate room temperate to suit their requirements.

3. U-Values

3.1. All suggested U-Values have been taken from the Building Regulations Part L.
3.2. Further information can be found in CIBSE Guide A (2006) Appendix 3-A8.
3.2.1. Table 3.49 thermal properties of typical wall constructions.
Table 3.50 thermal properties of typical roof constructions.
Table 3.53 thermal properties of typical floors in contact with the ground.

3.3. It is the responsibility of the user to select correct U-Values.

4. Ventilation

4.1. All suggested ventilation air change rates have been taken from the UK national annex BS EN 12831:2003.
4.2. Further information can be found in CIBSE Guide A (2006) Appendix 3-A8.

4.2.1. Section 4.6 - Natural Ventilation and Infiltration in buildings.
Tables 4.13 to 4.21 give air infiltration rates for various buildings.

4.3. It is the responsibility of the user to select correct air change rate.

5. Product data

5.1. All Myson radiators and towel warmers carry the CE mark of approval. Some other manufacturer’s products do not. We recommend you check for this mark before you buy any heating product. Under the Construction Products Regulation, from 1st July 2013 all radiators and towel warmers mush carry this mark.
5.2. All Myson Panel Radiators are manufactured and tested to BS EN 442. Every Radiator carries the BS Kitemark which certifies independent approval of heat output and verifies production under a quality system to BS EN ISO 9001.

Myson is a registered trademark of Rettig (UK) Ltd. Neither Myson or Rettig (UK) Ltd accepts any responsibility for any loss or damage of whatsoever nature resulting from the use of Heat Loss Manager to the fullest extent permitted in law.