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whats the other story?

You have compensated controls already...why downgrade with hive?

Not a recommended setup but,: https://www.jtmplumbing.co.uk/central-heating-controls-valves-c436/belimo-2-3-port-valves-1-2-to-2-c408/belimo-3-port-zone-valve-with-240v-actuator-powered-open-spring-close-p21843

there is a autore-set high limit thermostat. its in the manual. check circulation? covers off may be helping as there's little insulation on these buckets. to big for load?whats it heating

contact b.g perhaps...??

Okay then, goodluck

Square ones replaced those round ones. Just buy a square one, with hose and it hangs on the hooks, once the round ones brackets are removed..

Square ones replaced those round ones. Just buy a square one, with hose and it hangs on the hooks, once the round ones brackets are removed..

Priva, trend etc.

yes, yes it is

http://www.ebay.co.uk/itm/Thermal-Store-Hygienic-Buffer-Accumulator-Tank-for-biomass-boilers-wood-heating-/151748302522?pt=LH_DefaultDomain_3&var=&hash=item2354e756ba i ordered a custom steel one. good quality and insulation is very well made. Arthur is the person i spoke to.

Flexi?

answers to what

looks like a boulter camray wall hung outdoor. you may find the 'target brick' is obsolete

am i invisible here? as also said by oilhead, close the air damper somewhat...

who changed the thermocouple?

what was the co2% in the flue gas? sounds as if its burning to lean. 300 is too hot. Take a note of the air damper setting, then close it slightly. a little bit at a time, to see if that improves ignition. or use your fga to check co2 is 12%...

Primary store stat changed? Hidden behind panel, try adjusting it down slightly with a small screw driver. It'll be painted in a fixed position. expansion vessel fexi hose blocked?

Not long completed a similar job although boiler was moved into loft, so more like 30odd meters of extra copper. Decent boiler fitted though and lpg. 2.5 days. Wireless programmer retained. Job done to current standards. little guy = 2400

You need a new burner motor, if you can use a multimeter safely, check for 50v from white wire on motor when its running..