Most shower pumps tend to need to be a certain distance below the cold water storage tank, Salamander pumps need to be at least 600mm from the bottom of the cold tank. You also need to be careful about the distance between the bottom of the cold tank and the highest part of the system which is usually any pipework leaving the pump or the shower head - if either of these are closer than 600mm they would be in negative head - meaning you would require a neg head pump.
Most shower pumps tend to need to be a certain distance below the cold water storage tank, Salamander pumps need to be at least 600mm from the bottom of the cold tank.
Installation below the bottom of the CWS tank is a requirement for both negative & positive head pumps. Salamander require 600mm but others specify slightly less, it’s all down to the sensitivity of the flow switches.
You also need to be careful about the distance between the bottom of the cold tank and the highest part of the system which is usually any pipework leaving the pump or the shower head - if either of these are closer than 600mm they would be in negative head - meaning you would require a neg head pump.
This is what dictates weather or not you need a negative head pump or not; but the pump (positive or negative head) must always be below the bottom of the CWS tank or the system capacity will be restricted to whatever volume of water in the tank above it!
soooooooooooo how would you get a round not installing a combi and but moving the pump into the loft space thats getting converted , as im writing this im answering it myself ..... it cant be done can it ?
soooooooooooo how would you get a round not installing a combi and but moving the pump into the loft space thats getting converted , as im writing this im answering it myself ..... it cant be done can it ?
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