BOILERMATE BOILERMATE - Gledhill Spare Parts

APPENDIX BThe pressure loss through a flow regulatorat the designated flow rate is about 1.8 bar.Therefore for the flow regulator to control theflow rate at pre-set level, the inlet pressure mustbe greater than 1.8 bar. If the inlet pressureis lower, the flow rate will be correspondinglyless than the pre-set values.An optional location where cupboard space is tightThe maximum equivalent pipe lengths fromthe manifold to the terminal fittings can beestimated from the above information andthe resistance characteristics of the pipes.The examples presented below are for 15mmcopper pipe in table 1 and for plastic pipeworkin table 2.The preferred solution where space will allowTable 1: Maximum equivalent pipe length in 15mm copperInlet pressureMaximum equivalent length of pipe (m)(bar)@ 9 l/m @ 12 l/m @ 18 l/m2.0 25 10 52.5 75 30 153.0 150 60 30Table 2: Maximum equivalent pipe length in plastic pipeInlet pressureMaximum equivalent length of pipe (m)(bar)@ 9 l/m @ 12 l/m @ 18 l/m2.0 1.5 15mm : 10 15mm : 4.522mm : 402.5 3.0 15mm : 20 15mm : 9.022mm : 80.03.0 4.5 15mm : 30 15mm 13.522mm : 120Page 38