Some of the accompanying figures and tables of the manual are a bona fide scandal!
Thanks for your input John. I'm really intrigued as to whether adding a timer will save much energy. I plan to do a full costing, which should give an idea of how good that 69mm of insulation actually is.
Thanks for taking time to give me feedback, it's really appreciated!
EFLImpudence, it does seem odd there was not a timer fitted. However, as ericmark pointed out, I think the intention is that the heater is so well insulated that a timer is not really necessary (I shall be testing this...
I have a Heatrae Sadia Megaflo water heater. The heater has two immersion elements, both of which have been wired to separate 20A control switches.
Unfortunately, the heater is not programmable and has no timer settings. I do not use the booster heater. The primary heater I manually...