Search results

In the days when gravity HW systems were common I had many that airlocked when refilling, sometimes a gentle shaking of the cylinder would be enough to remove the airlock. Or if you isolated your heating system by turning off one of your pump valves along with both upstairs & downstairs...

My thoughts would be the coil could have a high point where air has been trapped, not such a problem with a fully pumped system. wet vac on the open vent maybe ?

So so right Stem, as I said earlier in this post "Planned Obsolesance" the older they are the better,some others no longer have any vents to let the heat escape, Honeywell's cover being metal dissipates the heat somewhat. while Danfoss just cook their motors in an almost airtight box.

Looks like the drinks are on me, my money was on the motor :-)

BES do a Honeywell clone (Pt No:17391)for under £30 inc think Plumb Ctr & City Plumbing do them also.

No need either will stop the circulation.

Has your room thermostat got a live feed when you select CH on your programmer? if so does the switched live also become live when you turn the dial to maximum?

[If you can get iQUOTE="wwwebber, post: 4140268, member: 8993"]Yes it can but most of the pipework is donkeys years old which may not take the added pressure. We also may need a new hot water cylinder if the coil wont take the pressure. Therefore, can I just raise the header tank ? Yes if you...

First thing I woud try is to turn your upstairs radiators off and then check if the ones giving you problems get hot, water will always take the route of least resistance unless you can force it to do otherwise, balancing a system can often mean robbing Peter to pay Paul, this involves using the...

Depending on what boiler you have you might be able to convert your system to a pressurised sealed system.

I know what you mean, difficult enough teaching some people who earn their living in the trade, I go back to the day boilers had no electrics, gravity HW & CH and a wind up 7 day clock connected to weep pipes if you were lucky lol

Have seen it so many times where motor appears dead so you lock it in man position to get heat with HW only for the motor to temporarily come back to life and unlock itself from man position before dying again. The manufacturers could go back to the old ways and wire then so if there is no...

Good point but as long as the open vent and cold feed are correctly positioned in the flow before the pump there shouldn't be any problems.

My money is on a weak motor, we will find out when you have fitted your spare one.

You could joint the 2 heating & HW systems to one boiler but your HW might suffer if you have long pipe runs between the boiler and some of your hot taps,the size (the heat output) of a combi boiler is more about the volumn of HW it can give you so a 31Kw combi will give more litres per min than...

What bait should he use to catch those carp? lol

If Grundfos no longer make it I would consider replacing it with a 3 port or 2 zone valves.

Fully pumped systems have been the norm for the past 35 years or more as boilers became smaller and heat exchangers made from lighter more efficent materials it became impossible for a boiler to be fitted to anything but a fully pumped system. How it works: Your primary flow is pumped and using...

Im not too sure about the resistance reading but I have seen many of those motors either get too weak to overcome the strength of the springs without giving them a nudge or even stalling after getting warm, have you tried your spare motor as it only takes a few minutes to change, one other...