Category Archives: Services

Week 5, Day 2

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Week 5, Day 2:

  • The underground pipework for the Ground Source Heat pump was terminated at the house end, filled with its anti-freeze solution and pressure-tested.
    • With the pressure-test passed it’s safe to back-fill the trenches containing the pipework.
    • There’s a pressure gauge which will be left in-place in the manifold chamber so that the pressure can be monitored during the rest of the build.
  • The main steel frame got completed, extending around the south-west corner of the house.

Due to technical difficulties I don’t have a photo from my normal camera to show the end-of-day status so here’s one that Steve kindly took on Wednesday morning, showing the completed main steel frame. It’s mainly only the south and south-west aspects of the house that need “help” from the steel to augment the cavity wall structure, because of the big sliding glass doors in those areas removing so much of the blockwork structure.

Week 5, Day 2

Week 5, Day 2

Capped-off 50mm GSHP brine pipes which will rise through the floor of the Utility Room

Capped-off 50mm GSHP brine pipes which will rise through the floor of the Utility Room

GSHP manifold chamber

GSHP manifold chamber, pressure gauge reads 2.5 bar

Week 4, Day 5

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Week 4, Day 5:

  • More progress on the below-ground cavity walls.
  • Initial preparation for attaching the steelwork to the foundations by drilling holes in the concrete.
  • A site visit from Western Power Distribution (the electricity DNO for the area) to assess the condition of the overhead supply cables and poles and to fit a data logger to capture voltage and current snapshots during the coming week.
    • The proposed make and model of Ground Source Heat Pump (a NIBE F1145) has a compressor start-up current of 32A which is just over the limit for some of the existing overhead cables. The data logger will highlight if there are any issues with the cables which mean they need maintenance work anyway; if they do that will (hopefully) reduce the contribution I need to make to having the cables upgraded.
  • A new delivery of building sand for the block laying mortar since the previous supply was too coarse. The old sand will get used for filling in around the GSHP collector pipes.
Week 4, Day 5

Week 4, Day 5

Voltage and Current data logger connected to electricity supply in GRP cabinet

Voltage and Current data logger connected to electricity supply in GRP cabinet