Technical data

47
expansionwatermustnotbettedunlessseparateprovisionshave
been made.
• Itshouldbetakenintoconsiderationthat,insomecountries,thenal
600 mm. of the mains cold-water connection to the appliance should
be made in copper tube only.
• Theapplianceissuitableformainspressureofupto10bar(150lb/
in²).
• Theappliancemustbettedwithamainssupply-isolatingvalve.
• Inhydraulicgroupthereisaregulatorthatcontrolsthehotwaterow.
In places where main supply water pressure is low; if it is desired to
havemuchwaterow,itcanbetakenapart.
• Higher ow rates will not damage the appliance but may result in
unacceptably low water temperatures.
• Inwinter(whenthemainsinletwatertemperatureislower)areduced
owrateatthetapsmayberequiredtoachievethetypeofhotwater
delivery temperature available in warmer weather.
• Itissuggestedthatlongpiperunstothetapsorshowershouldbe
insulated to prevent the rapid cooling of domestic hot water after a
tap or shower has been turned off.
• Hotandcoldtapsandmixingvalvesusedwiththisappliancemustbe
suitable for operating at mains pressure and temperatures of 60°C.
• No back siphonage arrangements are necessary except for some
loose head showers. The head of a loose head shower must not fall
closer than 25 mm (1in) above the top edge of the bath to prevent its
immersioninbathwater.Alternativelytheshowermustbettedwith
an anti-siphonage device at the point of the exible hose connec-
tions.
• Thermostaticallycontrolledorpressureequalizingshowervalveswill
guardagainsttheowofwaterattoohighatemperature.
• Thesupplyofhotandcoldmainswaterdirecttoabidetispermitted,
provided that the bidet is of the over-rim ushing type, (subject to
Local Water Supply Company requirements). The outlet(s) should
be shrouded and unable to have any temporary hand held spray at-
tached. No anti-siphonage arrangements are necessary.