From the United States of America? - Checkout our specific plumbing forum for you:USA Plumbing Forum

Discuss bleeding flow and return from boiler to UFH manifold!! in the Water Underfloor Heating Installations area at PlumbersForums.net

Bulk Workwear - Workmans Clothing and Protective Gear
This official sponsor may provide discounts for members
Status
Not open for further replies.
J

John2008

Hi, I have just installed my Underfloor heating. 4 zones in total and pressure tested after filling each loop. I have now connected up to the 22mm flow and 22mm return (new install where the plumber who installed a new boiler left these ready for me). The current system have a radiator curcuit which works fine however the UFH circuait is isolated via a manual valve on the flow and manual valve on the return. Here lies my issue, I need to purge the flow and return from each valve up to the manifold (length of pope to purge is say 20m), how do I do this? The flow should be ok by isolating each UFH loop and simply bleeding the air in the manifold, how do I bleed/purge the return?

Any help would be fantastic!!
 

SimonG

Plumber
Advent Win
There will be instructions with the underfloor kit. Hose pipe is normally handy as well.
 
OP
J

John2008

I've filled the actual ufh pipes as per instructions. I'm asking regarding the main flow and return from the boiler to the manifold as they are currently empty and isolated via valves next to boiler.
 
CorgiDirect - Discounted Corgi Related Documentation and Plumbing Supplies
This official sponsor may provide discounts for members
OP
R

Rickster123

I've filled the actual ufh pipes as per instructions. I'm asking regarding the main flow and return from the boiler to the manifold as they are currently empty and isolated via valves next to boiler.
A picture of the set up would help?
 

Chalked

Esteemed
Plumber
Gas Engineer
Have you any air vents on the manifold? If so, just turn on the valves ( leave ufh off)
bleed air from manifold. ( make sure zone valve is manually open)
Re pressurise.
Turn on Any zone to make boiler circulate.( not ufh)
Bleed again.
Re pressurise.
Turn on ufh.

With that length of pipe there will still be some air, but will find its way to high points like towel rails and upper floor rads. These will need bleeding after a day or so.
 
Status
Not open for further replies.

Reply to bleeding flow and return from boiler to UFH manifold!! in the Water Underfloor Heating Installations area at PlumbersForums.net. Plumbing questions, answers, tips and tricks.

Plumbing and Plumbers

Plumbing Workwear

Shower Power Booster

Plumbase Spares - Plumbing Supplies and Spare Parts

Water Underfloor Heating

CORGI Direct for Plumbers

The Wetroom Store

Plumbase Spares

New Posts Threads Members

Top