Glow worm boiler and CH system problems

[matz]

Hi everybody, first posting on this site, hope someone can assist?

Our 13 year old house has a Glow worm RF boiler (not combi) and all the original rads, etc. with a Honeywell programmer and room stat. We moved in 3 months ago and on subsequentley starting up the CH, I had trouble getting it to work properly. It seemed the programmer wasn't operating as it should. Eventually all was ok Then we had a leaking rad valve so I drained system down, refilled and bled and all ok for a couple of months.

Yesterday I completely removed 2 rads and blanked the pipes to these rads off. Refilled the system and bled it but now have major probs.

Setting programmer to continuous(red light is on) and room stat up, the boiler starts up but cuts off after about 5 minutes. No rads get hot. The pump upstairs is noisy. Not squeaking, more a loud sort of tinkling tinny noise.

Question is; Is the problem with the pump? Have I messed up the system by removing 2 rads? Is the programmer faulty?

Or anything else???

PS Does the pump need bleeding? If so, how to do?

Hope someone can help, thanks in advance.............

 

[breezer]

to bleed the pump you undo the screw in the middle of it

 

[matz]

er very embarrassed to say this but, loads if air in the system. Far more than I've ever had in any other and eventually it's sorted itself out. Seems strange that not even one rad was getting even remotely warm!

 

[kevplumb]

cos you have introduced four dead legs when you capped the pipes it (the air ) cant go anywhere

 

[matz]

yep good answer!! I did put service valves (?) on two of them (because I will add to them later) and let the water/ air run through those but on the other two I just used compression end stops. Could have just opened them up slightly I guess. Will know for next time now!

Many thanks for the replies................