Set Extra Heat Curve With Mixing Valve - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

Set extra heat curve with mixing valve

If you have fl oor heating you should set an extra heat curve with mixing
valve. The mixing valve is a valve that lets water through in different
amounts. It prevents the fl oor from becoming too hot and destroying the
fl ooring. The menu is only displayed when there is an extra fl ow sensor, T4
(GT4), on the heat pump. You set the extra heat curve using two menus:
Mix. valve incr/decr and Mix. valve fi ne-tune.
Increase or decrease the mixing valve
1. Press the Heat button in the initial menu.
2. Turn the menu dial clockwise until you reach the menu Mix. valve
incr/decr.
3. Press the Adjust button.
4. Turn the menu dial clockwise to increase the mixing valve.
Turn the menu dial anti-clockwise to reduce the mixing valve.
5. Save the new value by pressing the Save button.
Fine-tune the mixing valve
1. Press the Heat button in the initial menu.
2. Turn the menu dial clockwise until you reach the menu Mix. valve
fine-tune.
3. Press the Adjust button.
4. Turn the menu dial clockwise to increase the mixing valve.
Turn the menu dial anti-clockwise to reduce the mixing valve.
5. Save the new value by pressing the Save button.
Adapting the mixing valve cur ve
You can "break" the mixing valve curve up or down every fi fth outdoor
degree. For example, you can make a hump in the curve at 0ºC. The
purpose of breaking the curve is to be able to infl uence the heat pump's
heat production at extra sensitive outdoor temperatures.
The fl oor heating circuit should
have heat curve 2.
The scale covers the range 0 to 10.
Extra heat curve with mixing valve
only works with an extra fl ow sensor
T4 (GT4).
The example describes how to fi ne-
tune the extra heat curve. The scale
covers the range -10ºC to +10ºC.
23
Extra functions (Customer level 2)
Note
Mix. valve incr/decr
0 2,0 10
Return Adjust
Note
Mix. valve Þ ne-tune
-10 0,0 10
O O O
Return Adjust
Note
Temperature settings
Mix. valve curve
adjustm. (break) 1.7
Return Select