Hot Water Cylinder/Cold Water Tank

karlitob

Hi all,

Can anyone advise on the recommended size of the hot water cylinder and cold water tank please.

We have three rooms upstairs and bathroom. 2 rooms, bathroom and kitchen downstairs.

Thank you!

Marcanthony

Hi,
The cylinder size will also depend on your showers. what kind of showers do you have in the bathrooms.power showers or electric shower or gravity mixer valves?

Your water capacity will also depend on your usage.Is there 2 baths in the house.

Ill give you the sizes required if you pass on the above info.

karlitob

karlitob wrote: »

Hi all,

Can anyone advise on the recommended size of the hot water cylinder and cold water tank please.

We have three rooms upstairs and bathroom. 2 rooms, bathroom and kitchen downstairs.

Thank you!

Hi

Thanks for your help.

We have an electric shower downstairs that will stay and a shower over bath upstairs. There's a pump on the cylinder for the shower (not sure if that makes it a power shower). I suppose we'll need 4 showers in the morning.

Regards.

Marcanthony

I will take for granted the shower over bath is a gravity feed shower and the house has 1 bath.
30 X 18 Indirect Copper Cylinder or 36 x 15 Indirect copper cyliner.
Either should be fine. Measure the hot press to see which cylinder best fits.
In relation to your water tank. A 60/40 coffin tank should be sufficient.

fit a lid on the tank and insulate the tank and pipe work and you can get the cylinders pre insulated.

karlitob

Marcanthony wrote: »

I will take for granted the shower over bath is a gravity feed shower and the house has 1 bath.
30 X 18 Indirect Copper Cylinder or 36 x 15 Indirect copper cyliner.
Either should be fine. Measure the hot press to see which cylinder best fits.
In relation to your water tank. A 60/40 coffin tank should be sufficient.

fit a lid on the tank and insulate the tank and pipe work and you can get the cylinders pre insulated.

Hi there,

Thanks so much for your advice. Yes, 1 bath in the house and as you say, presumably gravity feed. I think the plumber said we had a 36 inch tank. It's only recently installed - factory fitted insulation also. Our plumber suggested that since a pump was attached then we wouldn't get sufficient water for our needs and suggested a 40 inch tank.

Sparkpea

36x18 copper lagged tank should be enough but if u like to have loads of hw then get a 42x18 lagged

70gallon cold water storage is ample

zipzoc

Sorry to hijack your thread but I have a similar question. I can't get enough hot water to have a bath. How can I get more hot water? Bigger tank?

Sparkpea

What size is your tank? ^

Joey the lips

If i was starting from scratch and had a choice the min i would put in is

42x18 ind ins cylinder

80/60 coffin tank and lid.


I would have the cylinder possibly tapped extra for a pump later or perhap dual or tripple coil if i intend connecting solar and a back boiler.

karlitob

Joey the lips wrote: »

If i was starting from scratch and had a choice the min i would put in is

42x18 ind ins cylinder

80/60 coffin tank and lid.


I would have the cylinder possibly tapped extra for a pump later or perhap dual or tripple coil if i intend connecting solar and a back boiler.

Hi joey,

Good idea. Thanks for that. Do I need an open vented system if I have a stove and back boiler.

Joey the lips

karlitob wrote: »

Hi joey,

Good idea. Thanks for that. Do I need an open vented system if I have a stove and back boiler.

Yes. As far as i know you do. actually if the stove and back boiler are not connected a dual coul will work well here.

karlitob

Joey the lips wrote: »

If i was starting from scratch and had a choice the min i would put in is

42x18 ind ins cylinder

80/60 coffin tank and lid.


I would have the cylinder possibly tapped extra for a pump later or perhap dual or tripple coil if i intend connecting solar and a back boiler.

Thanks again.

Do you know how many litres in a 36" and a 42"?

There's a pump attached to the cylinder at the moment (I think for the shower) - is this what you were referring to? Do you know how I would figure out how many litres the pump is outputting a minute.

Thank you.

zipzoc

Sparkpea wrote: »

What size is your tank? ^

Thanks for your reply. It's about 30" high x 58" diameter.

karlitob

One last question on the tank guys, is there any super dooper hot water cylinder out there that you would consider installing. ie good value but really retains the heat very well. Whats the next step up from the traditional copper cylinder with factory insulation?


MAny thanks for all your help.

Marcanthony

karlitob wrote: »

Hi there,

Thanks so much for your advice. Yes, 1 bath in the house and as you say, presumably gravity feed. I think the plumber said we had a 36 inch tank. It's only recently installed - factory fitted insulation also. Our plumber suggested that since a pump was attached then we wouldn't get sufficient water for our needs and suggested a 40 inch tank.

Hi ,
The measurements I gave you would be sufficent with a gravity feed shower. Since the shower is pumped 42x18 ind cylinder and 80/60 coffin tank and lid.
Make sure the cylinder comes with an additional outlet for the hot supply feed to the shower pump.

karlitob

Thanks for that. Just checked the cylinder size there. Its 34 inches from base to tapered tip. It seems we may need to upgrade. How much in scrap would I get for that copper would you think, if we did get rid of it?

Marcanthony wrote: »

Make sure the cylinder comes with an additional outlet for the hot supply feed to the shower pump.

That would literally be an extra hole for the pump only - not including twin/triple coils etc?

Marcanthony

karlitob wrote: »

Thanks for that. Just checked the cylinder size there. Its 34 inches from base to tapered tip. It seems we may need to upgrade. How much in scrap would I get for that copper would you think, if we did get rid of it?



That would literally be an extra hole for the pump only - not including twin/triple coils etc?

I take your talking about the heating coils. I was only talking about the DHW side of things.