I'm looking at installing a power shower above my bath to replace the current electrical one. I have a gravity fed system with a cold water tank in the loft and a hot water tank in the cupboard next to my bathroom. It's a 117 litre tank.
A friend recommended I get a salamander pump and I've seen this one.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=280306860226
Worst case scenario 3 people could need to have a shower one after the other. According to this site - http://www.uswitch.com/water/how-much-water-use/ - a power shower will use 80 litres of water. However at 30 litres/min (the max for the pump) I'm sure that's not accurate even if the pump isnt on full blast? I tend to spend about 10 mins in the shower and the other 2 would be between 5 and 10 mins each. Some cold water would be mixed in but I still think my tank is going to empty very quickly without the chance to reheat.
Currently during the winter the hot water heater comes on with the gas central heating for about an hour in the morning and then again at various points during the day/evening depending on when we're in. There is always hot water. In the summer I time the hot water to come on for 30 mins in the morning and 30 mins in the evening (about 5ish) and again always have hot water. I've not used the immersion in the 3 years I've been there. My brother switched it on once recently and I nearly burned myself when I ran the hot tap!
So my question is if the immersion was switched on when the first person went for their shower would this keep the water hot for all 3 showers? Or could I leave the gas water heater on for the duration?
Sorry for the long post, hope someone can offer some advice.
A friend recommended I get a salamander pump and I've seen this one.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=280306860226
Worst case scenario 3 people could need to have a shower one after the other. According to this site - http://www.uswitch.com/water/how-much-water-use/ - a power shower will use 80 litres of water. However at 30 litres/min (the max for the pump) I'm sure that's not accurate even if the pump isnt on full blast? I tend to spend about 10 mins in the shower and the other 2 would be between 5 and 10 mins each. Some cold water would be mixed in but I still think my tank is going to empty very quickly without the chance to reheat.
Currently during the winter the hot water heater comes on with the gas central heating for about an hour in the morning and then again at various points during the day/evening depending on when we're in. There is always hot water. In the summer I time the hot water to come on for 30 mins in the morning and 30 mins in the evening (about 5ish) and again always have hot water. I've not used the immersion in the 3 years I've been there. My brother switched it on once recently and I nearly burned myself when I ran the hot tap!
So my question is if the immersion was switched on when the first person went for their shower would this keep the water hot for all 3 showers? Or could I leave the gas water heater on for the duration?
Sorry for the long post, hope someone can offer some advice.
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