Heatslave 15/19 DHW set to continuous

[Mfuller]

Hi Guys,

Just bought a new house that has a Heatslave 15/19 installed (oil burner).

The programmer that is connected to it as a couple of settings for DHW which are Off, Cont, Twice, Once.

Now I understand what they all do, but not sure if it's ok to leave it on continuous? When I DO leave it on continuous it obviously starts up a lot to keep the tank water hot.. and when not doing that, emits an annoying hum (very annoying at night).

If I set it to Once or Twice, outside the programmed times I get no hot water and then when it does come into timed, it has to heat the tank up again.. which can't be very effecient.

So, I am leaning to leaving it on continuous. Is that ok with this boiler?

I am also thinking of changing the programmer to a Honeywell CM927 and removing the existing unit... but what happens about the DHW? Previous boilers I've used don't have storage tanks so don't need a continuous setting as they just heat it as the tap requests it?!?!

Confused

 

[Burnerman]

There's no problem with leaving the HW on all of the time - we do with our 12 / 15 and it only cuts in once in a while to keep the heatslave tank hot.
Otherwise, the boiler is completely quiet with no hum or noise at all - so where is your hum coming from?
I can't comment on a programmer replacement though - the original types are still available.
John

 

[Mfuller]

Hi John,

Many thanks for the confirmation! I thought it would be the case, but never quite sure

Many thanks!

Marc