Nibe HPAC 42 Manual De Instalación página 16

GB
Reversing valves
Valve positions
The heating/cooling modes are controlled by 4 reversing valves, which, depending on the outdoor temperature, switch
between the different modes.
FLOWCONTROL
Heating
Passive cooling
Active cooling.
The above applies to powered systems.
The arrow indicates in which position the valve is set.
Valve position checks
If the valve motors have become loose and the valves
have come out of position, adjust the position of the
valves using a wrench to obtain the right valve setting.
Adjust the valves according to the previous table "heat-
ing" and install with the valve motors unpowered, set to
default position (current on, control current off) and one
window on the motor displaying red.
At input control signal the valves rotate 90°.
16
FLOWCONTROL
QN13
red
red
blue
FLOWCONTROL
FLOWCONTROL FLOWCONTROL
QN15
red
red
blue
Caution
When changing the heating/cooling mode, there
is a delay of approximately 60 seconds before
the valves change their positions.
QN14 QN16
red red
blue blue
blue blue