New smart circulating pump/ are they win or bin

[Harvest Fields]

Not sure what the original was but there is a potterton netaheat profile in there now. But that is about 20 odd years old.

 

[Best]

Those pumps are called Comet, if I recall correctly. They are SMC and were the replacement for the excellent SMC Commodore pumps. I am not looking this up, - just remembering it.
I used to install both types.
I believe that model came out about 1983/84. I fitted the last previous model Commodores then in late 1983. So it is not that old really.
If I removed that pump, I would keep the heads at least. In fact, a mate of mine has the identical twin head pump on his system. Those pumps can last a very long time if cleaned or kept clean.
Motorised valves were around in the 1960s for sure, but those twin head pumps were just a simple way of doing fully pumped systems. Personally I prefered single pumps

 

[Best]

Here is a photo I found online while checking if I was correct.
The left one is indeed a SMC Comet pump and typically the more well built pump on the right is the older SMC Commodore model.

 

[leesparkykent]

Grundfos still do a setup like this called pump plan

Grundfos UPP15/50 Pump Plan | Plumb Center

 

[quality]

Grundfos still do a setup like this called pump plan

Grundfos UPP15/50 Pump Plan | Plumb Center

Dont see many of those around nowadays

 

[Admin]

View attachment 29439 Dab Evo pumps also give trouble. Electronics and heat don't mix well I suspect, although it might just be faulty electronic parts.
The pump in the photo is 1962 and has been working virtually everyday from then. I was in same house that still has the original owners this week and the heating was still working.
It doesn't even have any isolating valves, but I guess with that reliability it doesn't need them. It is not A rated though, - probably more like Z rated. 🙂

Looks like somebody has used it as an anvil at some point too and taken a chunk out of it and it's still fine lol

Couldn't do that with a smart pump.

 

[Harvest Fields]

Grundfos still do a setup like this called pump plan

Grundfos UPP15/50 Pump Plan | Plumb Center

I did see that but to be honest the pipework is all old and battered and I'll have to change the cylinder any way so thought it best practice to just upgrade the lot to a y plan. Think I will quote a small combi also. (Think that may be the most cost effective)🙁

 

[ShaunCorbs]

I did see that but to be honest the pipework is all old and battered and I'll have to change the cylinder any way so thought it best practice to just upgrade the lot to a y plan. Think I will quote a small combi also. (Think that may be the most cost effective)🙁

S plan never do a y unless your changing like for like

 

[leesparkykent]

Dont see many of those around nowadays

Yeah defiantly not. Out of the thousands of domestic heating systems I've wired over the years I think I've only come across it twice. You have to use the supplied grundfos printed circuit board wiring centre unless you want to start adding relays etc....Just another point of failure that's not needed IMO.

 

[Harvest Fields]

S plan never do a y unless your changing like for like

To be honest the whole lot is coming out which is why I said y plan. But I'm open to options. It is only a 2 bed flat which Is why I may do a combi

 

[leesparkykent]

S plan never do a y unless your changing like for like

I agree S-plan over a y-plan any day of the week. 🙂