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by NeilMar
Sat Jan 23, 2010 12:52 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: WORCESTER 24I RSF COMBI LEAKING
Replies: 3
Views: 19090

From what I can make out, sounds like your Pressure Release Valves not being tightend up propelly on the nut that secures the blow off pipe (copper pipe to outside) and the valve is passing. The pipe that goes out the wall, this will come from the bottom of the pressure release valve (Red cap 3 - ba...
by NeilMar
Sat Jan 23, 2010 12:38 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: High pressure Worcester Bosch Greenstar 30CDi combi
Replies: 4
Views: 35431

Your expansion vessel needs topping up or replacing. As the gauge rises around to 2.5 bar with the heating on, check the pipe outside (copper), this usually goes straight down or curls back to the wall. It will more than likely be dripping (Pressure Release Pipe) if this pipe is dripping when cold o...
by NeilMar
Sat Jan 23, 2010 12:30 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: FAULT CODE ON WB GREENSTAR 30CDI BOILER
Replies: 2
Views: 6440

Your condensate pipe should when externally ran no less the 1 1/4 inchs in diameter. This should be as short as possible and as vertical as possible, with a fall no less that 5 cms per meter. With the recent big freeze even with heavily lagged pipes, they can still freeze, the ones that never ran st...
by NeilMar
Sat Jan 23, 2010 12:22 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Highflow 400
Replies: 2
Views: 3217

If your going to flush the system out correctly, you will need it powerflushing, a hot flush with a standard flushing agent like x400 or Sludge Remover on a heavily black watered or lime scalled system isnt going to cut it. It will help break down the muck pre powerflush, but when you drain it, you ...
by NeilMar
Sat Jan 23, 2010 12:15 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: New Combi on old system?
Replies: 2
Views: 2634

Depends on a few factors. I you have copper pipe, you can keep the pipework, however the valves (Thermostatic and the Lockshield) will need to be changed on each radiator. It is very very important that the engineer (most plumbers bodge this part!) powerflushes the system correctly. This on an old s...
by NeilMar
Sat Jan 23, 2010 12:07 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: should I replace my old boiler
Replies: 11
Views: 6919

This is also very much depends on how its installed, as well, some are better than others. But to this date I have never known a combi to go more than 8 years without something needing replacing. Most do not see the 15 year mark, except well installed looked after systems (rare)
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