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Dotty
Don't think there would be much change out of £12k to supply and fit, allowing for a meter upgrade which could require a new upsized pipe from the main and all the digging or moling that would entail............
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Don't think there would be much change out of £12k to supply and fit, allowing for a meter upgrade which could require a new upsized pipe from the main and all the digging or moling that would entail............
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Ermintrude
U16 might not require re pipe ? Bigger houses up here have 1 1/2 iron with u16 some u6. Thought u could get 16m3 through a std iron service or a poly service?
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Mike Jackson
The ACV unit may well provide the flow rates required but you need to look at the plumbing system as a whole. If you've got long pipe runs to the showers you need to be looking at a secondary circulation system for the hot water to minimise the wait for hot water. I'm not familiar with the ACV unit and it may have the facility for a secondary return but there is no point in using a space saving option if it doesn't provide the performance you require.
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Ermintrude
Unless pipework is horrific and house has a 28mm 40m run to bathroom I wouldn't waste wonga on pump. Spend more in electricity and replacement pumps than u will save! Lagg pipes well, remove oversized and unused legs make system as "sporty" possible
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timmyjane
All good stuff to consider and thanks. Unfortunately chap coming on Tuesday cancelled so cant answer any questions about pressure, meters etc yet:disappointed:
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Gray0689
If you post what area you are in maybe a member could help you out and price work for you
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timmyjane
PO18 8NS Bosham
Someone suggested posting on another part of this forum as well. How do I get to it Please?
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timmyjane
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timmyjane
How does an unvented boiler get around this? Situation could be unvented horizontal cylinder in the loft (Boiler likely ground floor as this is where gas inlets are) with a shower on the ground floor and loft. Same length of run, for either system. Would a secondary system be needed in both situations. Very reluctant to put anything 1st floor other than pipe runs.
Note room heights around 230 cm, ground and 1st floor at the mo. Max house footprint 10 metres square. Does this help. Absolute max pipe run I would envisage could be 13 metres long?
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timmyjane
Queries
Heatmaster 85tc, out I think on cost alone, along with potential meter problems etc, to get full potential of it may have to upgrade pipework in the house, so too much to consider.
Still weighing pros and cons of 35/45 tc unit. easier connection all round. Still base cost will be more than decent sized unvented cylinder and system boiler. Back down to a lower flow rate with this one but still ok I think.
1. price consideration, which is going to cost me less to run over 5 years.
300 lt with great boiler say 30 - 40kw. Guess I'd have to heat a tank in the morning (majority used 1st thing), need a little during the day and say half a tank in the evening. It has to be at optimum heat between. 6 - 8.30 in morning and 5.30 - 8.30 in evening. Presume would need Boiler on heating 3 hrs a day.
The 45tc, 100 litre tank combi system. So still need to pre heat 100 litres in morning (1/2 hour), ready for morning rush. But rest could be on demand say another hour. 1.5 hrs a day. I have no idea how much gas is!
Then theres the central heating, which I presume would be same for both? On this basis think heating cost overall would be half, but may have that totally wrong.
2. One thing bothering me about both systems, seems both would be subject to a certain amount of limited pressure in the system and the same pipe sizes delivering the water throughout the house. Is there any reason from a pressure point of view one would be better than the other, remembering I want 3 showers running at exactly same time and rather it wasn't 3 dribbles? Question is about pressure rather than heat now for feel either system could deliver the hot water.
Guidance appreciated:confused5:
Heatmaster 85tc, out I think on cost alone, along with potential meter problems etc, to get full potential of it may have to upgrade pipework in the house, so too much to consider.
Still weighing pros and cons of 35/45 tc unit. easier connection all round. Still base cost will be more than decent sized unvented cylinder and system boiler. Back down to a lower flow rate with this one but still ok I think.
1. price consideration, which is going to cost me less to run over 5 years.
300 lt with great boiler say 30 - 40kw. Guess I'd have to heat a tank in the morning (majority used 1st thing), need a little during the day and say half a tank in the evening. It has to be at optimum heat between. 6 - 8.30 in morning and 5.30 - 8.30 in evening. Presume would need Boiler on heating 3 hrs a day.
The 45tc, 100 litre tank combi system. So still need to pre heat 100 litres in morning (1/2 hour), ready for morning rush. But rest could be on demand say another hour. 1.5 hrs a day. I have no idea how much gas is!
Then theres the central heating, which I presume would be same for both? On this basis think heating cost overall would be half, but may have that totally wrong.
2. One thing bothering me about both systems, seems both would be subject to a certain amount of limited pressure in the system and the same pipe sizes delivering the water throughout the house. Is there any reason from a pressure point of view one would be better than the other, remembering I want 3 showers running at exactly same time and rather it wasn't 3 dribbles? Question is about pressure rather than heat now for feel either system could deliver the hot water.
Guidance appreciated:confused5:
pressure wil not be a problem and running 3 showers at the same time from UHWC
You can pre set HW to be heated 30 to 45min before the demand and during the demand time
You can pre set HW to be heated 30 to 45min before the demand and during the demand time
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timmyjane
UHWC? would both systems (The combi with hot water tank, and the cylinder with standard boiler) be the same in terms of pressure delivered to showers.
sorry I dont understand that .
As Howsie said , time for a descent plumber to design and install , and not before your next birthday but before this Xmas
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timmyjane
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