Hi all,
I've fitted a Salamader RP120SU hot water booster. And its sucking air/water from the vent pipe. Any suggestions how I can fix this? I've extended the vent pipe into the header tank so that it ends about 2/3 down into the tank water, this is just to allow me to run the pump without drawing air and damaging the pump while I work out whats wrong, but I'm not getting anywhere.
Setup is all in one cupboard, flat roofed dormer so no loft.
90 litre cold water header tank supplied by 3 bar cold mains from 22mm inlet pipe and 3/4" part 1 float valve. Tank is sited on a shelf above hot water cylinder. When pump runs, the water level drops about 1/4 before float valve is open enough to maintain water level in header tank.
Vented hot water cylinder, 22mm pipework between header tank and cylinder inlet.
3/4" connection off top of cylinder, fitted with 3/4" Warix flange. 22mm vent pipe to header tank off side of Warix flange, 22mm feed pipe to pump inlet off top of Warix flange.
I've fitted a Salamader RP120SU hot water booster. And its sucking air/water from the vent pipe. Any suggestions how I can fix this? I've extended the vent pipe into the header tank so that it ends about 2/3 down into the tank water, this is just to allow me to run the pump without drawing air and damaging the pump while I work out whats wrong, but I'm not getting anywhere.
Setup is all in one cupboard, flat roofed dormer so no loft.
90 litre cold water header tank supplied by 3 bar cold mains from 22mm inlet pipe and 3/4" part 1 float valve. Tank is sited on a shelf above hot water cylinder. When pump runs, the water level drops about 1/4 before float valve is open enough to maintain water level in header tank.
Vented hot water cylinder, 22mm pipework between header tank and cylinder inlet.
3/4" connection off top of cylinder, fitted with 3/4" Warix flange. 22mm vent pipe to header tank off side of Warix flange, 22mm feed pipe to pump inlet off top of Warix flange.