Hello all,
If any of you could help me with a potential answer to this I would really appreciate it.
I have a potteron netaheat 80 in an S plan configuration, the boiler is located on the ground floor and has no drain points as such that I can see. So imagine a long run of 22mm flow and return to the boiler. F & E tank in the loft, the 2 port valves are working and are also in the loft.
The pump sits above the boiler I have drained the system down a few times before and always refilled with no issue.
Last week I introduced some cleaner into the system and let it run for a few days, drained down on the weekend and refilled, bled the radiators, there was a bit of air in the pump which bled out through the old pump ( grundfos) and the system was ok.
Never had to change the pump or do anything to it previously, but it did need a change now and so replaced it with a Grundfos UPS3 which is supposed to self bleed.
The whole system is run by a tado programmer with thermostatic heads on all the rads.
Pump was changed and with it brought water that was in the pipes on the run down to it which was expelled into a bucket.
Refilled system, bled radiators as before and started system up. Pump is noisy so followed manufactures recommendation to run it at 3 for 30 mins as it's supposed to expel it to a higher point in the system.
Since then I have had limited luck in getting any heat into the house, boiler fires, I get HW being heated and the rooms maybe get to temp after a while ( longer than what I would expect) usually the house teats up quick and tado does a good job of managing the valves.
Theres small pockets of air in the rads every now and again so I am assuming it's being pushed around the system in small quantities and sometimes ends up in some of the bigger rads / towel rad.
There are bleed legs on the ends of the 2 port vales, so bled them and one had a bit of air, there is a bottle automatic air vent near the cylinder (ROBOCOL) and the screw at the top has been snapped off. In all honesty I've never had to mess with it.
My question is three fold.
1) Does this sound like a legitimate explanation for my issues of a noisy pump and rubbish performance from a system that was previously good ( in that the air cant vent from the highest point)
2) To fit this would I have to do a full drain down again or just let out enough to dissipate the pressure and tie up the F & E filler.
3) Once fitted shall I bleed as I always have or is there something new to it.
Thank you in advance, apologies for a lengthy preamble.
If any of you could help me with a potential answer to this I would really appreciate it.
I have a potteron netaheat 80 in an S plan configuration, the boiler is located on the ground floor and has no drain points as such that I can see. So imagine a long run of 22mm flow and return to the boiler. F & E tank in the loft, the 2 port valves are working and are also in the loft.
The pump sits above the boiler I have drained the system down a few times before and always refilled with no issue.
Last week I introduced some cleaner into the system and let it run for a few days, drained down on the weekend and refilled, bled the radiators, there was a bit of air in the pump which bled out through the old pump ( grundfos) and the system was ok.
Never had to change the pump or do anything to it previously, but it did need a change now and so replaced it with a Grundfos UPS3 which is supposed to self bleed.
The whole system is run by a tado programmer with thermostatic heads on all the rads.
Pump was changed and with it brought water that was in the pipes on the run down to it which was expelled into a bucket.
Refilled system, bled radiators as before and started system up. Pump is noisy so followed manufactures recommendation to run it at 3 for 30 mins as it's supposed to expel it to a higher point in the system.
Since then I have had limited luck in getting any heat into the house, boiler fires, I get HW being heated and the rooms maybe get to temp after a while ( longer than what I would expect) usually the house teats up quick and tado does a good job of managing the valves.
Theres small pockets of air in the rads every now and again so I am assuming it's being pushed around the system in small quantities and sometimes ends up in some of the bigger rads / towel rad.
There are bleed legs on the ends of the 2 port vales, so bled them and one had a bit of air, there is a bottle automatic air vent near the cylinder (ROBOCOL) and the screw at the top has been snapped off. In all honesty I've never had to mess with it.
My question is three fold.
1) Does this sound like a legitimate explanation for my issues of a noisy pump and rubbish performance from a system that was previously good ( in that the air cant vent from the highest point)
2) To fit this would I have to do a full drain down again or just let out enough to dissipate the pressure and tie up the F & E filler.
3) Once fitted shall I bleed as I always have or is there something new to it.
Thank you in advance, apologies for a lengthy preamble.
