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

Commissioning

Other settings

Flow
Go through the heating and hot water settings in the Menu and Advanced
menu and make the necessary adaptations. For example the temperature
settings for underfl oor heating must be lower than the factory settings. Set
appropriate V and H values.
In the event of too low outdoor temperature, the compressor in the heat
pump is switched off and all heating and hot water heating is via the
electric element in 290 A/W. The fl ow temperature will now be based on
the hot water temperature (sensor T3).
If the H value is set so that it is higher than 55ºC the max temperature for
T3 must be checked and changed.
Outdoor temperature
To permit higher fl ow temperatures go to Advanced menu on I/S-level.
Select Additional heat settings.
Then select Electric additional heat settings and T3 Stop temperature.
Factory setting is 62ºC. You can change this to max 70°C.
NOTE! At settings above 65ºC a mixing valve must be installed. The
Factory settings table lists all functions, which can be changed by the
customer and installer. Go through the list to see if any other settings need
to be changed.
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 5-10ºC. The nominal fl ows provided inTechnical
information shows 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).
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.
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