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by nav122
Wed Dec 03, 2008 8:41 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating Pump Overrun
Replies: 1
Views: 3424

Central Heating Pump Overrun

Hi All. Just started having a problem with my central hetaing pump. Never used to do this before. Anyway, for some reason the pump is now pumping hot water of its own accord around the house without the central heating or hot water being switched on! The only way i can switch off the pump is by goin...
by nav122
Wed Oct 22, 2008 8:35 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating FE Tank pipe Query
Replies: 0
Views: 2322

Central Heating FE Tank pipe Query

Hi all. I have a question about my central heating. When i switch on the water and central heating (I have to together..my system is old) the water circulates fine etc around the system, you can hear it circulating. But when i switch them off, everything turns off and suddenly i hear a lot of water ...
by nav122
Thu Aug 21, 2008 7:38 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Adding Inhibitor to F/E Tank
Replies: 2
Views: 3758

Adding Inhibitor to F/E Tank

Having successfully cleaned, drained and refilled my system I managed to get the system working I just need to add the Inhibitor now. I did not add it has I refilled due to our system being more prone to airlocks and needed draining to get some of the rads downstairs to work - I don't want to mess w...
by nav122
Wed Aug 20, 2008 4:10 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Radiator flush
Replies: 1
Views: 2888

Radiator flush

Quick one! Just wanted to know, I drained my CH system but only realised now after filling it that one of the rads upstairs i didn't open the weathershield valve (thermostat adjustment on the rad), is it likely that the radiator upstairs would have emptied itself via the otherside so the lockshield ...
by nav122
Wed Aug 20, 2008 8:31 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Gas boiler pipes rattling after flush!
Replies: 2
Views: 3747

htg, as usual thanks for your advice and help. The problem now has seemed to disappeared as I switch the boiler to max so thats good. The other problem i now have is that when i switch on and heat the hot water, the water will heat up thats fine, and it will come out fairly hot, but not as hot as be...
by nav122
Mon Aug 18, 2008 9:54 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Gas boiler pipes rattling after flush!
Replies: 2
Views: 3747

Gas boiler pipes rattling after flush!

Having cleared out my CH system, and bled all the radiators clear of air before firing up the gas boiler, I have found that when I switch on the boiler and really fire it up, the pipes leading up into the airing cupboard really begin to rattle - sounds like the Water hammer scenario! Is this normal?...
by nav122
Sat Aug 16, 2008 8:55 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating cleaner
Replies: 2
Views: 3287

Having completed a first drain of the CH system and now refilled, what is the best method of "flushing" the system?
by nav122
Fri Aug 15, 2008 9:05 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Airlock in CH
Replies: 0
Views: 2739

Airlock in CH

If an airlock is left in the CH system will this cause damage to the system or not?
by nav122
Fri Aug 15, 2008 11:04 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating cleaner
Replies: 2
Views: 3287

Central Heating cleaner

Quick one. I have placed a central heating cleaner in my system just under a month ago. On the instructions it says leave the cleaner in the system for up to 28 days, under normal operating system condiitons. Does this mean it must only stay in the system for 28 days if the central heating is used e...
by nav122
Sat Aug 02, 2008 2:44 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating / Radiator Issues
Replies: 7
Views: 4493

"Well i've managed to get air out of one of the radiators that i was having trouble with, and now it works fine. However - with all the other rads in the house closed apart from the final troublesome one downstairs - the pump seems to be pushing hot water back up the central heating feed rather...
by nav122
Sun Jul 27, 2008 1:56 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating / Radiator Issues
Replies: 7
Views: 4493

htg. The pipe is coming from the wall, has the draincock at the bottom. This pipe then subsequently is connected to the radiator via the wheel sheild valve for the rad. Are you saying if i drain this for a period of time whilst the heating is on it will start coming out hot? Secondly is it possible ...
by nav122
Sat Jul 26, 2008 10:55 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating / Radiator Issues
Replies: 7
Views: 4493

Also, is it advised to leave the cleaner in the system for 14 days or so even though there is an airlock? Will the airlock not accelerate corrosion? The other thing that is baffeling me is the rads that are cold, when drained via the draincock the waterflows out of the pipe but it is cold. If it was...
by nav122
Sat Jul 26, 2008 10:04 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating / Radiator Issues
Replies: 7
Views: 4493

Thanks htg. Yes we do have thin pipes going to the radiators. Decided to leave the flush in the system for about 14 days and then will drain it. From your post i take your saying switch off all radiators that work, and switch on the one that doesn't and set the pump to max to see if this does anythi...
by nav122
Fri Jul 25, 2008 10:22 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating / Radiator Issues
Replies: 7
Views: 4493

Central Heating / Radiator Issues

Hi. I flushed out my Central Heating system, as there was a lot of brown sediment at the bottom of the F/E tank (Rust deposits). Anyway once drained and cleaned, I filled up the F/E tank and added a cleaner. Once done I started up the central heating. All the rads upstairs heated up - I then diverte...
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