Other Settings; Important Points To Check After Commissioning - IVT Optima 600-1700 Installation Manual

Commissioning

Other settings

Go through the heating and hot water settings in the Menu and
Advanced menu and make the necessary changes. For example the
heat curve settings for underfl oor heating need to be lower than the
factory settings. Set appropriate V and H values.
Important points to check after
commissioning
For the installation to perform at its best, it is important to check
the fl ow on the hot side of the heat pump. Usually, the heat carrier
pump has a speed selector switch. This must be set correctly for the
pressure drop in the system. A recommended temperature difference
across the heat pump on the hot side is between 5 and 10ºC. The
nominal fl ows provided in Technical data provide a difference of 7ºC
in operating mode +7/45ºC. Check this by reading the sensors T9
(heat transfer fl uid in) and T8 (heat transfer fl uid out). These can be
found under Temperatures in the Advanced menu.
When commissioning is carried out at a low outdoor temperature
(below 0ºC) the temperature difference should be between 5ºC and
7ºC.
When commissioning is carried out at an outdoor temperature above
15ºC the temperature difference must be between 8ºC and 10ºC.
The fl ow through the heating system should be suffi cient to keep the
whole radiator warm and thereby increase the heat emitting surface.
This means that the fl ow temperature is kept low.
After testing, vent the heating system again and top up with cold water
if necessary. See Filling the heating system.
37