Small capacity gravity-fed instantaneous water heater...

[Masood]

Recommendations please?

TIA!

 

[Masood]

Recommendations please?

TIA!

Oh, cannot have an open outlet - needs to be connected to distribution pipework...

 

[stani]

Does it have to be gravity fed

 

[Masood]

Does it have to be gravity fed

To work in the way I want it to, yes.

It's to feed a thermostatic douche valve. I can supply the cold via a small cistern in the loft, but providing hot with an AUK1 air gap is proving problematic. Any stored water will get cold. Can't feed it directly from the combi. So I'm thinking, a small cistern feeding an instantaneous water would do the trick.

 

[ShaunCorbs]

cant you break mains tank it eg break tank 1.5 bar pump to feed a 10l unvented water heater ?

if no wont be small but santon r25

 

[tamz]

None that i know of that don't need a vented tap.
Only other option is a 25litre combination unit but they are about 5 or 600 quid.

Saying that any unvented heater will work off tank fed too. You won't need the pressure reducer or expansion vessel and although you wouldn't really need the prv if you fed it straight from a tank without a valve it would be advisable to fit it.

 

[chris watkins]

Ablution Unit-1 Hot FC5 TMV 230 V - Products
Have you seen these Masood ?

not sure if this would work direct off a combi but rather than AA or AB on hot & cold supplies have you thought about having the air gap on the outlet i.e after the mixer but before the douche valve outlet that way hot & cold can be fed from existing systems ?

 

[Masood]

Ablution Unit-1 Hot FC5 TMV 230 V - Products
Have you seen these Masood ?

not sure if this would work direct off a combi but rather than AA or AB on hot & cold supplies have you thought about having the air gap on the outlet i.e after the mixer but before the douche valve outlet that way hot & cold can be fed from existing systems ?

Thanks Chris, had not seen those before, that's going to be very helpful indeed!