Danfoss Thermostats

wayne0881

Hi All,


I have just moved into a new property and have noticed I have two different Danfoss thermostats.


There is one in the bathroom next to the boiler which is a Danfoss TS715Si which I believe controls hot water and heating but also in the flat I have two Danfoss TPOne-M thermostats. (1 in the lounge controls the heating in the kitchen,lounge and mini radiator by the front door and 1 in the bedroom controls the heating in the bedroom) they also have a hot water setting so I am a bit confused as to which one I should be setting for hot water??



Is the one in the bathroom the main one and just use the lounge and bedroom ones as overides for heating??



Also the tap symbol appears on the TPOne-M (lounge) indicating the hot water is on but the hot water is off in the bathroom boiler?



I have the bedroom TPOne-M set to 15 degrees at night but it never drops below 24 dergrees.


does anyone else have these two Danfoss models?


Thanks All

Gerry1

Forget the model numbers etc and the symbols, etc, the only way to find out is by trial and error. Switch off the relevant circuits in turn or set the thermostat to off or the lowest setting and see what happens.

thorganby

You will never achieve cost effective use of your heating by trial and error!

Read the user manuals, if you have not been provided with user manuals they are available from the the Danfoss website.

The TS715si is not a thermostat, just a single channel timeswitch that can be configured for seven day or five plus two day (weekend) operation, this simply enables to boiler to operate at the times that you have set.

The TPOne-M thermostats are programmable thermostats that allow different temperatures at different times of the day. The hot water tap symbol may be totally irrelevant if you have a combi boiler (this is the default setting but can be disabled in the installer at set up), normally a dual channel timeswitch would be fitted for a system boiler to control both hot water and heating indepdantly.

If you have a padlock symbol displayed, the installer has locked the settings and a three digit code will be required to make changes. There are various installer options e.g. normal, delayed start, optimised start, temperature limits, frost protection, temperature override etc. that can be changed to get the best from your system.

Gerry1

thorganby wrote: »

You will never achieve cost effective use of your heating by trial and error!

The point I'm trying to make is that Wayne needs to start by getting a full understanding of the configuration of his system and not make any assumptions.

For example, there's no point in worrying about the hot water boiler times if there's an immersion heater at the bottom of the tank on the hottest setting and left switched on 24/7 !

Of course, he could trace the wiring, but it's probably easier to switch things off and see what goes cold. (That would find the immersion heater problem.)

Once the configuration is known accurately he can then make adjustments with confidence.