dexter

However, still cannot get my head around the timer. Does it then need loads of timezones configured, and when it is "off" in C103 and C104 does that mean the hp is off, or does that mean the timed settings are off and it reverts to those set in U01 for day mode or U11-13 for eco mode?

That was pretty much my thinking. Effectively, the entire TS behaves like a giant quooker tap for DHW. So very efficient in the summer. Winter not so, because the TS also has to cope with CH. But it does mean the heating reaches temp very quickly. We will see where we are after a full year of use!

Thanks, I haven't played with that but logically to reduce diff to three from default 5 and increase stop to 2 from default zero might help, but it seems to then defeat the point of eco mode. Probably worth a try.

You may be able to clarify...I understood these hps always used fan and compressor compensation, even in day mode. The eco mode only changes the tank set point temp?

Obviously, reverse is true when it is cold..so probably balances out.

My cold water feed is from an above ground storage tank due to pressure issues, so it's temp is generally higher than direct from mains. The warmer it is, the less is extracted from the TS when drawing HW. So it seems to work quite well. Adopting eco mode has reduced input demand significantly, as the set point drops to match the rise in temp of the stored mains water. Entirely by accident rather than design tbh.

The TS seems quite efficient tbh. Hp only runs to top it up, and at present that's about 10 mins once a day. In HW mode it only uses tank set point, so not continually running pump to check supply and return temps. The only issue is wind-up timing..once running, it can maintain water temp as it is drawn through tank. TS does have an immersion, so that is a possibility...but hp would be so much easier if it simply had a 10 mins boost function to get it up to speed!

Hi everyone. Complete ashp newbie here. In march this year my oil boiler was replaced with a CE-IVT10 ashp. This is connected to a large gledhill TS which provides central heating and dhw via an indirect coil which was originally supporting a hybrid system but now only connects to the ashp. The ashp is performing well, but there is a minor issue in HW supply. Currently, ashp user settings are configured for HW mode only, with ashp in eco mode which varies HW set point accordingly. However, if HW is drawn say 10pm but not sufficient to deplete the TS to trigger ashp demand, we can find that tank temp has dropped to just above the set point less differential in the morning, giving insufficient stored heat for anything other than a quick shower. After this, the ashp kicks in, and brings the TS back up. In the absence of a boost button (another story!), I wanted to know whether I could use the timer settings to force the system to ignore the eco mode set point at say 7am, and use a timezone tank temp setting for an hour. If the timer is enabled and on/off times are set, does this mean that the system ignores the timer settings and reverts to non-timer mode when set to off...or does it literally turn the whole heat pump off? My brief chat with the team at CE suggested it would act as an override, but they couldn't confirm this because they very honestly admitted they have never used them! I would only be using this in summer when the ashp is only providing HW. Anyone actually used the timer settings at all? Would a sudden increase in tank temp set point cause any issues for the ashp? Any advice appreciated.