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Recent Posts
- How to build an extension
  
  By mjc55 · Posted 16 minutes ago
  
  Depending on what work is required you will need to go through the planning and Building Regs process. Planning would probably come between points 1 & 2 (unless you need to work out if you can afford it in the first place - in which case planning comes after point 4) BR process would come after planning approval.
- Window mould
  
  By Arthurss · Posted 20 minutes ago
  
  Thank you. I will have to take it off then. He done one frame only.
- Window mould
  
  By Arthurss · Posted 23 minutes ago
  
  Thats single brick and plaster with some filler. There is literally nothing else. Other windows are lined with internal bricks
- Flow rate
  
  By PhilT · Posted 29 minutes ago
  
  This is the formula with a few example numbers. Set up a spreadsheet and model the variables to get your flow rate, or whatever parameter you want. Formula for Energy Delivery M x Cp x ΔT = Q flow rate coefficient temp diff output l/s water/glycol degC kW 0.35 x 4.085 x 4.00 = 5.7 litres/minute 21.00 litres/hour 1260 Water Cp 4.18 Fernox HP-5c @ 20% 4.085 -2.3%
- Ecodan - room temp auto adaptation and multiple zones
  
  By BEJB · Posted 49 minutes ago
  
  Being a scientist, I know you should change one thing at a time, then evaluate the impact of that. However, I'm retired, so I've had a go at:- reducing the speed of the zone 1 pump setting the zone 2 pump to the UFH setting (I think the Ecodan engineer probably changed that to higher constant speed) reducing the 'set back' of the UFH thermostat, so the floor temperature doesn't drop so much overnight. altering the wiring for the zone 2 (UFH) pump to connect it to OUT2 rather than OUT3. OUT 3 provides pump power if Zone 2 calls for heat. OUT 2 provides power if either Zone 1 or Zone 2 calls for heat. So if Zone 1 calls for heat, it heats both the radiators and the UFH - so the UFH becomes part of the zone 1 heating circuit. But if it doesn't get enough heat from that, when Zone 1 thermostat reaches temperature, Zone 2 can operate on its own. Switched the heating to flow temperature and then back to Room, to reset the 'learning' process. Of course, yet another variable has kicked in, because the outside temperature has risen by about 10C, so it is now about 13C. So of course, everything is toasty, and I won't tell if the current setting is any good until we drop back down to frosty nights. Thanks for your help. Here's hoping things are a bit better for these changes.
Recent Topics
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  Flow rate
  
  Potatoman · Started 4 hours ago
- 2
  
  Should I insulate between old and new roof?
  
  MitcheCA · Started 5 hours ago
- 3
  
  False lintel - what material and other questions
  
  BotusBuild · Started 16 hours ago
- 4
  
  s73 Non-material amendment - anyone willing to share an example?
  
  Great_scot_selfbuild · Started 17 hours ago
- 5
  
  Window mould
  
  Arthurss · Started 18 hours ago
Blog Entries
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Blogs
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