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system

A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory and other systems sciences.

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  1. Fogster74

    Working on heating side of system with an unvented cylinder, no G3?

    Hi all, I'm a competent DIYer with an engineering background and am active in Heritage Buildings. I never touch anything I'm not allowed to albeit I've worked on the wet side of my own heating on the central heating circuit before when I had a combi - balancing rads, add a Fernox TF1, washing...
  2. M

    Recommended pressure bar to re pressurise system?

    Hi, I have a new boiler Ideal "Heat only" 24kw with a new Indirect unvented hot water cylinder and two expansion tanks. The plumber who fitted the system a few months ago told me how to re pressurise the system by opening two valve taps to introduce mains fed cold water to the system and...
  3. Husk24

    Most efficient setting for my logic s30 system boiler?

    Hi I have a Ideal Logic S30 System Boiler, and I have always left it on eco setting which is 70 degrees. I have a separate thermostat for my water tank set at 65. I don’t understand the condensing part of the boiler but I believe there is the most efficient settings you can have for this...
  4. V

    Two pumps on heating system. Imbalance?

    Hello, I wonder is I could ask for some advice please. I have just replaced and only gravity fed boiler with a new Baxi heat only boiler. The system is two pipe and has 17 rads in a long old house. The system is 22mm copper except the last 5 rads which are 15mm. (I know this should be no more...
  5. Z

    Powerflushing a system with a Powermax

    Hello, I have a job with a Potterton Powermax system that is badly clogged up with sludge/rust from several leaks/ignored problems etc. I want to powerlush it to try and solve some of the problems, and I just want to get clear in my head how to go about this. I guess i'll disconnect the...
  6. B

    Potterton EP2002 wiring with a Y system

    Hi, I'm brand new to plumbing, heating systems, wiring etc and only started to read about it because I wanted to know why our CH would only work when HW was also on. I think we have a Y system based on the Honeywell 3 position diverter valve above the boiler. We have a Potterton EP2002...
  7. B

    Pump advice on pressurised system

    Hi all Following some advice earlier this year on here, I finally have new boiler due to be fitted soon. I’ll be fitting a low loss header as advised due to loss in Vaillant 637. I currently have a Grundfos usp2 on my open vent system which I was planning on using for the time being until the...
  8. R

    System Boiler & Magnaclean Queries

    Hi I have a system boiler (Worcester Bosch). There is a Magnaclean filter fitted, which I assumed was just on the central heating. Heating was turned on a couple of days ago and the pressure on the boiler has been dropping. Last night I made sure the heating side was turned off, wrapped...
  9. C

    Turn on CH System on all time - S Plan - live to NO?

    Hi, I have just installed a Tado system with the Wireless Reciever and Two Smart Thermostats. Without getting into the weeds of Tado, I want to energize the CH system all the time. But Why? I have two thermostats which control a demand valve each which when opened kick the boiler and the...
  10. Z

    Help needed - radiators on one pipe system

    Hello all, I bought my house last year and recently had a couple of radiators swapped for modern triple columns. Since they were installed they are extremely slow to heat up, much slower than the old ones. I had the plumber back to try and fix this, and he flushed the system, even though this...
  11. M

    URGENT How to get underfloor heating flowing

    I am seriously stuck with an underfloor heating system which isn’t getting warm enough. I have previously had it working perfect in January however is been off a year and now decided no to play ball. I have changed the reliance thurmogaurd mixer which has helped and the manifold is now getting...
  12. S

    Dual heating system with upstairs and down stairs thermostats

    Hi I have a dual heating system ie separate thermostats for upstairs and down stairs, my question is why does my upstairs bathroom radiator come one when I turn my downstairs heating on ?? Surely this should come on when I put the upstairs on ??
  13. C

    URGENT New Glowworm Sealed System Boiler with NO Pressure Gauge

    We had a Gloworm Energy 7 30r Boiler fitted in Jan 22 to replace a British Gas Boiler (which was a Glowworm Rebranded ) when the heat exchanger split after 10 years. The old boiler had a pressure gauge on the fascia but this new model is not fitted with one. After it was all fitted I queried...
  14. D

    Solar thermal system labour and parts pricing

    As I recently had my HW cylinder replaced and we had to leave disconnected the solar thermal system from the HW cylinder and drained out the old glycol. What is involved in re-filling the thermal system with new glycol in terms of number of hours of labour and materials? I got a quote for a bit...
  15. S

    Heating system underfloor/hot tub

    Hi everyone. I have a problem that is beyond the skills of my plumber, I have 2x Shepherd huts in a field with a hot tub and underfloor heating. I would like to install an external log burner that would run the underfloor heating, heat the hot tub on a similar curcuit to the underfloor heating...
  16. Husk24

    Ideal Logic system s30 boiler making whistling sound

    Hi guys, my boiler seems to be making a whistling sound after a while its on, if I tap it firmly it goes away, is this something to do with trapped air? Any ideas? My boiler is ideal logic s30. Video attached thanks
  17. D

    Parallel System wood burning stove and Combi boiler

    I'm looking for a heating engineers/old school plumber to put in a Combi boiler (possibly Intergas) replacing very old open vent system in parallel with a wood burning stove with a back boiler (ESSE Bakeheart) as back up and alternative. I know this relies on two radiator systems. Combi for...
  18. A

    Is there a disadvantage in fitting to many pumps

    Is there a disadvantage to a central heating system if there’s too many pumps added?? Thanks
  19. T

    Replacing the control system... it's a real mess!

    Hi all, I've previously been helped on here by kind people so I'm tackling my next challenge. We have a GSHP (installed by previous owners) that supplies a buffer tank. That all runs OK. The heating pump and manifold actuators are 'controlled' by three OJ Electronics WLM3s (one master and two...
  20. I

    Underfloor actuators working on one system but not on another?

    Downstairs I had a 12 port Hetta underfloor system installed by a plumber. Upstairs I installed an 8 port Hetta system myself using the existing pipework which had an old system on. Both systems are now fully Hetta with exactly the same components on (wiring centre, manifold, actuators...
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