Primo HE - Manual

3.9 colD wAter

3.9 colD wAter coMBinAtion vAlve The cold water combination valve may be fitted in close proximity to the cylinder, or alternatively, it may be separated to allow the pressure reducing valve where the mains supply enters the property allowing for balanced cold water throughout the whole property whilst the 6 bar safety valve is fitted in close proximity to the cylinder. A balancing port is supplied on the 22mm and 28mm valves allowing balanced cold water supply to the rest of the building giving constant results for mixer and shower valves. If the facility is not needed a plug is supplied. Refer to FiG. 3.8 and FiG. 3.9 note! tHere sHoulD Be no otHer vAlves FitteD Between tHe cylinDer AnD tHe expAnsion vAlve. 12

3/4” B.S.P. CONNECTION FOR EXPANSION VESSEL 22mm COLD MAINS IN 22mm TO WATER HEATER SERVICEABLE 3/4” PRESSURE REDUCING CARTRIDGE AND LINE STRAINER (SET AT 3.5 BAR) 15mm EXPANSION RELIEF OUTLET TO TUNDISH EXPANSION RELIEF VALVE (SET AT 6 BAR) IMPORTANT NOTE! The connecting nut used on this water group is of an eccentric design. The offset hole is not a manufacturing defect. 22mm COLD MAINS IN 22mm TO CYLINDER NON-RETURN VALVE (WITHIN HOUSING) FiG. 3.8 22mm BALANCED COLD WATER TAKE OFF WITH NON-RETURN VALVE For ST 100, Primo HE ITD, ITI, ITSI, Classico HE STD and STI models up to 300l SERVICEABLE 1” PRESSURE REDUCING CARTRIDGE AND LINE STRAINER (SET AT 3.5 BAR) EXPANSION RELIEF VALVE (SET AT 6 BAR) 28mm COLD MAINS IN 28mm TO CYLINDER FiG. 3.9 1” BALANCED COLD WATER TAKE OFF WITH NON-RETURN VALVE 3/4” B.S.P. CONNECTION FOR EXPANSION VESSEL For Classico HE STD and STI 500 models 13