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by whelsy
Wed Nov 21, 2007 3:15 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Bleeding the CH Pump
Replies: 1
Views: 3730

Bleeding the CH Pump

When bleeding a Gundfoss pump (Chrome center screw) should the boiler be fired up and the pump running? The pump is fitted in the return pipe underneath a wall hung boiler.
The pump has two speeds which speed is the best to use??

Many Thanks for any advise.
Regards W
by whelsy
Mon Sep 10, 2007 9:12 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Connecting Radiators in series
Replies: 8
Views: 24932

Thanks for the posts :) Certainly would like to add complete control of the system,was considering this when I take the inevitable step of having the boiler replaced. Current boiler wall hung cast iron Ideal concord model. In the meantime would it be Ok to add a 28mm motorised valve to the hot water...
by whelsy
Fri Sep 07, 2007 10:05 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: immersion boiler over heating
Replies: 3
Views: 3208

Sounds like the thermostat on the immersion element is set very high or is faulty. Switch off all power and remove cap on top of immersion element,(On top or side of hot water cylinder) usually a single nut or screw. Look for plastic chunk with an arrow pointing to a number.Make sure the arrow point...
by whelsy
Fri Sep 07, 2007 9:27 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Connecting Radiators in series
Replies: 8
Views: 24932

Thanks for all the help. The 15mm copper down pipes are supplied off a 22mm copper circuit. There are only 3 other rads on the pumped heating circuit (one rad on gravity hot water 15mm off 28mm circuit.). The pump is on the boiler return right underneath the boiler. Will the thermostatic valve on ra...
by whelsy
Wed Sep 05, 2007 8:40 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Connecting Radiators in series
Replies: 8
Views: 24932

Rads In series

Many thanks :)
Will it work ok connecting in parrallel with my existing 15mm pipe drops??
and would both the thermostatic valves both need to be placed on the flow side or could i have one on the flow in 1st rad and one in the return on the 2nd rad?
Best regards W
by whelsy
Fri Aug 31, 2007 10:28 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Connecting Radiators in series
Replies: 8
Views: 24932

Connecting Radiators in series

I calculate I require a heat output of 8000 BTU,s for my living room. I can only fix the radiator under the window against one wall. Will it work if I connect two double radiators, in series with a single thermostatic valve?? regards W :? Many thanks :) Will it work ok connecting in parrallel with m...
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