worcester greenstar 24 & 28 i junior.

[desrob]

i am finding that when doing services on these boilers, the co2 % levels on max and min always need adjusted, are you finding this or is it just me

 

[Billy Bob Bob]

do you mean the greenstar junior?

 

[desrob]

do you mean the greenstar junior?

yeah mate.

 

[Billy Bob Bob]

yeah i find a few out

 

[desrob]

i'll take that as it is nothing to worry about,just part of the checking , re- settig procedure.have you heard of a boiler halstead ace high flow ?got a complaint of it developing loudbangs,noises from pipe work

 

[Billy Bob Bob]

i'll take that as it is nothing to worry about,just part of the checking , re- settig procedure.have you heard of a boiler halstead ace high flow ?got a complaint of it developing loudbangs,noises from pipe work

yes its probably the older ace high,pump could be on the way out,or it could be corroded internally easy boiler to work on

 

[diamondgas]

Only ever easy when you know how matey :lol: IMHO You got too many years behind you. lol

 

[Billy Bob Bob]

try the pump desrob it could be quite weak,its a standard grundfos the boiler could be full of sludge or the working pressures could be out,if it does turn out to be the pump heating world of spares are the cheapest for 6 mtr grundfos at the mo

 

[desrob]

yes its probably the older ace high,pump could be on the way out,or it could be corroded internally easy boiler to work on

yeah on it mate done some research,but it seems to be a sysyem problem,the punter mentioned traped air..?but your bang on the pumps my first port of call.... another one...? has anyone heard of a tadpole(some thing to do with removing air from systems)..?

 

[Billy Bob Bob]

yeah on it mate done some research,but it seems to be a sysyem problem,the punter mentioned traped air..?but your bang on the pumps my first port of call.... another one...? has anyone heard of a tadpole(some thing to do with removing air from systems)..?

never heard of a tadpole,have heard of and fitted air separaters but only on gravity heat only boilers

 

[desrob]

never heard of a tadpole,have heard of and fitted air separaters but only on gravity heat only boilers

yeah... me too,seemed genuine,removes micro particles..?

 

[ecowarrior_p]

I'm not an expert, but the tadpole seems to be a device that you install between the boiler and pump of a central heating system and it removes dissolved air from the water, not the visible air bubbles, but air actually dissolved in the water, and that causes the water to heat up faster, use less fuel, saves money, etc etc.
Seems to cost £195, designed in Yorkshire, I know what it does, but I can't find out how it does it. Looks like it has been around since at least 2007 - a long time considering not many have heard of it.

 

[Mattw]

Sorry old thread.

I fitted a tadpole about 18 months ago on my Greenstar junior 24i. Seems to work from an energy efficiency point of view. We have turned the heating loop temp settings down at the boiler since install with no noticeable difference to heat-up time. I recorded the first 20 minutes gas consumption on the boiler a number of times pre and post install (with the heating loop at max and thermostat set so that it will be calling for heat constantly). The gas consumption was 6-8% less after install.

I am planning to move a couple of rads in the summer and will be interested to see if there has been much sludge build-up in the system if there is no air in the water.

 

[lame plumber]

theres always air in your water, after all its made of H and O and the effects of heat and corrosion break it down into gases made of Hydrogen and Oxygen

 

[Mattw]

If that is correct and this bit of kit I have is constantly working. Which I assume it is because it is a permanent part of the heating loop. Then I should be noticing a slow but continuous drop in pressure shouldn't I? The pressure seemed to stop dropping just a few days after fitting and I have not needed to top it up since.

Although having said that I have just looked at manufacturer's website and their testing (not sure how impartial that would be) states that it gets the dissolved oxygen in the water down to as low as 0.2ppm-0.5ppm, so there is still some air left in the system.

 

[Roger Welton]

When I were look for a air seperators I go straight spirovent as they have been doing them for a looooong time, and seem to do the job.