Central heating settings

Postby Passmethehammer » Tue Apr 17, 2007 9:21 am

Should the thermostat on the side of the hot water tank be set to the same figure as that on the boiler?

Have a Maxol Morocco gas boiler, dial reads 0-5, whereas dial on tank reads 2-9. So should the dials be set to similar % of range - ie 1/2 way on dials: 2.5 boiler / 4.5 tank?

Reason I ask is that pump has been running almost continuously (with boiler not heating), turned thermo down on tank and that has turned pump off. Read somewhere that boiler usually turns pump on/off but have had a look at boiler and there are no wires connected to the "pump" terminals.
Rank: Labourer
Progress to next rank:
Posts: 3
Joined: Tue Apr 17, 2007 9:09 am


Simply Build It

Postby sparx » Fri Apr 20, 2007 8:25 pm

No not related,
boiler 'stat determins temp. of water going around system, presume basic boiler with motorised valve(s), boiler temp will set max temp on surface of rads and coil inside tank to heat water. when temp of water in tank reaches tank 'stat setting valve(s) will divert all boiler primary water to rads untill room 'stat satisfied when system should shut down both boiler and pump (unless pump has over run time from boiler which would require wire from boiler direct to pump).
check what arrangement of external parts you have IE valve(s) 1or2, tank/room stats, programmer /timeswitch /internal boiler time clock etc,to give overall picture, Regards SPARX
Rank: Project Manager
Posts: 2166
Joined: Wed Mar 21, 2007 8:33 pm
Location: The fifth continent.

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!


  • Related Topics