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5. APPENDIX
5.1 Country code
The country code must be entered in order to refer to a standard insulation
thickness used in a particular country. The lower the insulation thickness,
the greater the heat loss and, as a result, the higher the power consump-
tion.
Two groups of countries depending on insulation thickness:
Fig. 8 Typical insulation thickness (mm) depending on pipe diameter and
country, Insulation = 0.035W/mK
Pipe diameter 15 mm 20 mm 25 mm 32 mm 40 mm 50 mm
Country 1/2’’ 3/4’’ 1’’ 1 1/4’’ 11/2’’ 2’’
Austria, Czech Republic,
Denmark, Finland,
Germany, Hungary, Ireland,
Netherlands, Norway,
Poland, Russia, Sweden,
Switzerland, United Kingdom 20
20 30 30 40 50
Belgium, France, Italy, Spain 9 9 13 19 19 32
If insulation thickness or pipe diameter deviate from the above, complete
quick setup and go to 5.2.
5.2 Pipe Size, Insulation and Temperature
Pipe size and insulation characteristics have a considerable influence on
the temperatures achieved by the HWAT-ECO and the self-regulating tapes.
Increasing insulation thickness, better insulating materials and/or smaller
pipe sizes generally results in higher temperatures as the heat losses
decrease. Decreasing insulation thickness, less insulating materials or big-
ger pipe sizes results in lower temperatures as the heat losses increase.
The HWAT-ECO internal data is based on standard sets of values for pipe
size and insulation characteristics. Any deviations from these standard sets
will result in a deviation from the target temperatures. The unit compen-
sates for this by using the ‘Power Correction Factor’.
Tyco C 9278e HWAT-ECO 22.02.2002 14:12 Page 24