Help! Concorde c/h boiler -blocked?

[magicman]

I have 8 rads. and a microbore system.
The blr. is a concorde WRS240A

I changed the kitch rad, and now can't get any hot water from taps!

Info.
It took 3 hrs, to bleed rads, pump on /blr.off! (rads now fine)

The blr. has a separate rad. circuit and h/w circ
The cold make up tank feeds into the h/w circ. (gravity fed)
Question:
Why can I only get any cold water from taps!
Any suggestion please?

 

[PEDANTICVINDICTIVEMAN]

Air lock in gravity hot water circs.

 

[magicman]

Thanks PVM!

The cylinder is only 600mm above the boiler (in bedroom cupboard) and the cold water fill branches in the hw. circ behind the cylinder.

Any ideas on how I can get rid of an air lock in the h/w circuit?

(There is a drain cock on the biler, but no apparrent bleed valve).
Thanks again!
Magicman

 

[kevplumb]

run boiler on hot water only then pull the stat phial till it boils then switch off
if your not sure get someone in

 

[PEDANTICVINDICTIVEMAN]

kevs got the idea, make sure you refit stat phial properly afterwards.

 

[kevplumb]

pedantic you ever fitted a greenstar he ?

 

[magicman]

Thanks a lot
keyplumb/PVm
I'll give it a whirl
M

 

[ChrisR]

Alternative would be to "crack" the joint at the HW cylinder to let air out. A wet job usualy!

 

[magicman]

Thanks chrisR

I'll make that plan B!

(seconds thoughts , I might make it plan A- I'm getting to the point where I desparately need a good wash!!!)
M