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by jokes1000
Wed Mar 24, 2010 6:38 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: DHW temperature not making its set point and is too cold
Replies: 5
Views: 3923

hi, checked the diverter v/v and it is fine, checked the temp probes and the resistance readings are fine as per biasi temp/resistance graphs, cleaned dhw filter all ok. The stat potentiometers appear fine when tested too ??? The DHW gets upto nearly temperature and then the burner ramps down, if i ...
by jokes1000
Tue Mar 23, 2010 8:13 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: DHW temperature not making its set point and is too cold
Replies: 5
Views: 3923

[quote="htg engineer"]Check CH flow, with the system cold, run the hot tap. If there's heat going down the CH pipes then it's the diverter at fault. Could also be gas pressures/modulation htg[/quote] ok thanks, will check diverter v/v. If this v/v is passing will i need to run a hot tap fo...
by jokes1000
Tue Mar 23, 2010 8:10 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: DHW temperature not making its set point and is too cold
Replies: 5
Views: 3923

ok, will check diverter v/v tomo. Thank you. Gas modulation seems fine on c/h. This diverter v/v if it is passing into c/h flow will i notice the temp rise quite fast or will i need to leave a hot tap flowing for a good ten mins. Once again thanks in advance.
by jokes1000
Tue Mar 23, 2010 4:44 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: DHW temperature not making its set point and is too cold
Replies: 5
Views: 3923

DHW temperature not making its set point and is too cold

Hi, I have a biasi 24s combi boiler. The central heating works fine, but at present the DHW temp is too low even though DHW stat is turned to full !, i have confirmed the DHW flow switch is fine as the boiler continually runs once a tap has flow. The boiler when supplying DHW never goes off on the s...
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