draining with a pressure vessell

Joined
2 Mar 2005
Messages
12
Reaction score
0
Country
United Kingdom
Hi. I'm currently decorating a large room/diner with six rads which I need to remove and replace after hanging paper. I did this same job 9 yrs ago and drained down system, easy as it was vented then. But people didnt tell me they had a new boiler stuck in loft with a Pressure Vessel. :rolleyes: Its a suprima 50, vessel is next to it with a filling loop.
Can I ask whats the best way of draining down and any precautins needed with a pressure vessel?
Presume I need to open bleeders on highest point? It will be a nitemare draining each rad x 6 seperatly as they got a white fluffy carpet. :cry:
cheers .
 
Sponsored Links
It'll squirt a bit at first. Fins the Automatic Air Vent which is problably by the pressure vessel and make sure its cap is loose. That will let air in so aid draining.
It should always be loose but they get closed if they leak a bit.
 
It'll squirt a bit at first.

There should be a pressure relief valve' it will probs have a red cap on which u just turn and excess pressure water will flow through a pipe to the outside
There should be one or more drain off valves at a low point in the system to get most the water out. Opening bleed valves will let air in and water out of most if not all the rads. Make sure rad valves are open.
If downstairs rads are fed from upstairs pipework remember that it is likely they will not all drain off through the DOV
Wherever there's a risk of damaging a carpet I point this out to customer and make it their responsibility to take it up or accept the risk that it may get soiled
 
Sponsored Links
You should also allow for new inhibitor etc.

A recent post also highlights the problem of draining down sealed system.

The boys will remember the expansion vessel that burst on refilling and the client claiming for a new boiler etc.

Personally I think you should get the clients plumber to drain the system and make it safe, then get him back to refill and treat after you finish
 
Wherever there's a risk of damaging a carpet I point this out to customer and make it their responsibility to take it up or accept the risk that it may get soiled

Very honest approach.

Draining systems in some recently built houses where every ground floor rad is a drop can be a dust-sheet nightmare. It wouldn't be so bad if they'd specified half decent drain valves. I wish they'd build more suspended floors with drain taps outdoors.
 
Thanks chaps got it drained and part filled to beds and h/w. no probs apart from normal baked washer on dov, and carpets clean too ha ha.
Thanks again. :
:?: Just one thing I'm curious about, this boiler is in a loft but as far as I can see there is no cold stat. Is this rite?
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top