WANTED: Grundfoss Pump Plan UPP15-50 Wiring Centre

Joined
31 Aug 2021
Messages
14
Reaction score
1
Country
United Kingdom
Hi all,

Some years ago Grundfos introduced Pump Plan, a two pump heating system with a wiring centre containing a relay, as an alternative to using the zone valves required by S-plan and Y-plan. This product has been discontinued for some time.

I can replace the dual-pump with two 15-50s or 15-60s but the dedicated wiring centre is no longer available. Can any kind soul provide me with one? Or suggest another wiring centre that contains the relay necessary to independently switch CH and HW, together with connection for the pump overrun?

Many thanks

Dram
 
Sponsored Links

CBW

Joined
26 Sep 2019
Messages
14,015
Reaction score
4,296
Location
North
Country
United Kingdom
I take it your boiler doesn’t have pump overrun?
 
Joined
31 Aug 2021
Messages
14
Reaction score
1
Country
United Kingdom
Hi CBW: Presumably not. But I'm guessing that the planned replacement will.
 
Sponsored Links
Joined
16 Nov 2007
Messages
6,585
Reaction score
3,210
Location
Northamptonshire
Country
United Kingdom
Nothing is available off the shelf but a decent fitter will be able to make a version using relays. Personally I'd advise you to get the system updated and upgraded to a modern priority hot water system
 
  • Thanks
Reactions: CBW
Joined
31 Aug 2021
Messages
14
Reaction score
1
Country
United Kingdom
Hi Razor 900: I'd rather stick with 2 pumps. My experience with zone valves in hard water areas has been disappointing - they have repeatedly failed within 2-3 years whereas the pumps have never needed to be replaced. Given the system in this property, acquired last year, probably was installed 20+ years ago and was working fine until the boiler service engineer managed to short-circuit something, if I can't get a replacement wiring centre I'll get someone (else) to install a new condensing (oil) boiler and rig a two pump system with contactors, non-return valves, wireless programmer/thermostat and new TRVs. Less upheaval than fitting zone valves in an old barn conversion with 3-feet thick, unplastered, stone walls and concrete floors :)
 
Joined
29 Nov 2009
Messages
2,289
Reaction score
576
Location
Shropshire
Country
United Kingdom
If your system is sound then the hardness of water will not be a limiting factor, only if there is constant refilling will the valves be affected.
 
  • Thanks
Reactions: CBW
Joined
26 Jun 2004
Messages
64,234
Reaction score
4,661
Location
London
Country
United Kingdom
If the pump controller has been damaged you should be able to get it repaired by CET or a similar firm.

I do have a new one somewhere but not very sure where. It was quite a clever idea.
 
Joined
31 Aug 2021
Messages
14
Reaction score
1
Country
United Kingdom
Hi Agile,
Many thanks for your uplifting response :)
If I can't find a replacement, I'll try CET. The local sparky took one look at the PCB and reckoned it was beyond repair - components not identifiable, extensive track damage on PCB, etc. So I won't be holding my breath.
If you get bored during the current rain and decide to dig out your new-old-stock one, I'm sure I could make it worth your while :)
Otherwise, I think I'll use two pumps and a couple of contactors to give independent control of DHW/CH rather than go down the zone valve route. Still have to work out how to incorporate a wireless room thermostat, but I'm hoping it's not rocket science for a sparky that hasn't been weaned solely on S-, Z-plan etc.
Cheers!
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Top