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Pat_
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« on: May 31, 2010, 08:12:57 PM » |
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I've been meaning to document my system here, mainly because I remember wanting similar information when I started out. As it happens I fitted my heatdump circuitry today, prompted by a stagnation event last month. So to start myself off, here is a picture of my new wiring centre.
This is just an S-plan boiler heating system, modified by the addition of a relay to allow the radiators to be used as a heat dump. The other novelty is the addition of 6 neons, which are intended to show the current state of the boiler/dump equipment. I don't think I'm the only person to wonder whether a particular zone valve is energised.
The wiring centre is built from standard DIN rail components, mostly from Rapid.
The dump relay is activated by being connected to R2 on a TDC3 controller.
The TDC3 settings (for now) are:
Program 2: “Solar + Thermostat”
Tmin S1 20°
Tmax S2 75°
ΔTR1/ΔTR1 10°/3°
Tset point S3 65°
Hysteresis -5°
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« Last Edit: May 31, 2010, 09:30:19 PM by Pat_ »
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Pat_
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« Reply #1 on: May 31, 2010, 10:07:37 PM » |
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Here's the schematic...
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daftlad
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« Reply #2 on: May 31, 2010, 10:21:11 PM » |
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Where did you get the rail mounted case full of neons? All good.  ta ta |
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I WILL KEEP BANGING ON ABOUT MASONRY STOVES
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Brandon
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« Reply #3 on: May 31, 2010, 10:36:00 PM » |
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what he said, I could use those neons
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changing the world, one roof at a time ..."We can't be B&Q astroturfers. That's one conspiracy theory too far. You should cut down on the pot." - Wookey |
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Pat_
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« Reply #4 on: May 31, 2010, 10:45:33 PM » |
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I'll try and do part numbers tomorrow. It's a DIN box, around £4, + 6 neons. Just drill 6 holes.
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Pat_
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« Reply #5 on: June 01, 2010, 10:05:56 AM » |
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Right, box was Rapid Electronics 30-1064 (1 off price £5-09). This is also available at a higher price from Farnell. The Neons were from Farnell, 826-4813 (£0-96 each).
Couple of practical points. Don't drill the holes so close to the edge of the top panel as I did, because the plastic is very thin. Secondly the neons could do with painting black behind the panel, as they tend to light each other up. The label was designed in Coreldraw and printed on to sticky-backed label.
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mespilus
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« Reply #6 on: June 01, 2010, 11:18:42 AM » |
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Very impressive.
Sorry to be dense, but have you got a part number
for the 'big' box with the transparent front?
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Now in the HS2 blight zone
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Pat_
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« Reply #7 on: June 01, 2010, 12:40:47 PM » |
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have you got a part number
for the 'big' box with the transparent front?
Rapid Electronics: 30-0642 I also used glands for cable entry: 04-0320 |
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mespilus
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« Reply #8 on: June 01, 2010, 12:47:41 PM » |
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have you got a part number
for the 'big' box with the transparent front?
Rapid Electronics: 30-0642 I also used glands for cable entry: 04-0320 Many thanks. |
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Now in the HS2 blight zone
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Pat_
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« Reply #9 on: June 01, 2010, 12:52:07 PM » |
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NP.
I should also mention that the box is currently missing a label warning about there being two separate electrical circuits in the box. I did it this way because I didn't want a boiler servicer to switch off my solar pump and cause a stagnation.
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Tigger
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« Reply #10 on: June 01, 2010, 01:00:56 PM » |
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Impressive, warning lights and everything, I wish I had more time to tinker |
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30 tubes, south facing gable wall (Navitron Fornax Trial System). Hunter Herald 8, integrated boiler hooked up with Oil Boiler via Dunsley Neutraliser. Scrounging fire wood wherever possible |
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