Immersion Heater controls

[TBServices]

I'm currently pricing a job to fit a small unvented cylinder in a cafe that's being fitted out, there's no gas in the shop so will have to be direct electric heated. Sparkies are rewiring the whole place so electric supply is no problem.

So it'll be a 120l RM Stelflow with 2 immersions going in. HW will only be needed during opening hours of cafe so how would you guys control the heaters?

 

[Leo21]

Timer

 

[TBServices]

Any recommendations Leo?

 

[RPG 80]

cant you just put the supply via a double poled switch which the cafe lady switches on when she opens up?

 

[TBServices]

cant you just put the supply via a double poled switch which the cafe lady switches on when she opens up?

Could do but then the water will be heating all day when recovery rate is only 40/50 mins and cylinder stays up to temp for entire day.

 

[Leo21]

Last time I had to do this I went to an electricians merchant and asked what they had. I hated having to go in there amongst all those filthy sparky s but it had to be done. Why don't you give our tame independant trade only supplier a shout.

 

[TBServices]

Last time I had to do this I went to an electricians merchant and asked what they had. I hated having to go in there amongst all those filthy sparky s but it had to be done. Why don't you give our tame independant trade only supplier a shout.

Lol, hopefully he'll see this before lol.

2 channel timers for immersions I've seen seem to be for economy 7. Realistically I just want to be able to heat the water for an hour in the am and a boost facility in case they run out through the day.

 

[Dotty]

What about one of these?

24 Hour / 7 Day GP / Immersion Heater Timeswitch - Electronic

 

[TBServices]

Looks like the job.

Do you reckon it's worth having 2 immersions on timer at the same time (quicker recovery) or just heat the cylinder with bottom immersion on timer then have top on a boost button?

 

[Dotty]

Aye, you could do that. There's a standard immersion boost with 1, 2 and 3 hour buttons.

 

[jase158]

What happens if they are busy? they use a lot of hot water and run out?

I would have it on all day as it is only on to heat the water, once it is hot, the immersion will turn off.
If they use too much water then it will reheat the water, if not then it wont.

or use a 3 channel programme and set it for an hour before busiest times.

 

[TBServices]

It's only serving a sink and 2 WHB's so chances are it won't run out, and if it does, they'll have boost.

 

[jase158]

It's only serving a sink and 2 WHB's so chances are it won't run out, and if it does, they'll have boost.

yeah but that means a 40 minute wait for it to reheat!!

If it was me I would put a really good timer in, so they can do either option, then they have the choice

 

[secret squirrel]

You can't be giving customers tooooo much choice it just confuses them, on or off is difficult for some....

 

[Ray Stafford]

Last time I had to do this I went to an electricians merchant and asked what they had. I hated having to go in there amongst all those filthy sparky s but it had to be done. Why don't you give our tame independant trade only supplier a shout.

And as if by magic...

hmmm. I don't think we would have anything on the shelf, but maybe a [DLMURL="http://www.timeguard.com/products/time/immersion-heater-controllers/ntt03-24-hour-7-day-compact-electronic-immersion-heater-timeswitch"]TimeGuard NTT03[/DLMURL] or something from the Sangamo range?

Should be available from your local independent plumbers merchant via Stearn distribution, although they will probably have to order it.

Otherwise its full PPE and head down to the sparkie shop.

 

[Leo21]

Ppe?..

 

[Ray Stafford]

Ppe?..

Personal protective equipment.

If mixing with sparkies you wouldn't want to catch anything would you. Better safe than sorry.

 

[TBServices]

Was looking at the FST17A Ray, timer and fused spur combined.

 

[Ray Stafford]

Was looking at the FST17A Ray, timer and fused spur combined.

Looks like it should do the trick, and not break the bank either. Sparky stuff is a bit double dutch to me - I can just about understand KW, although I firmly believe that you get kilowatts by burning oil or gas, not by plugging something into a magic box of tricks. Electricity? Can't even see the stuff.