Shuttle Valves Valve Inspection; Valve Inspection - Nibe HPAC 42 Instrucciones De Instalación Y Mantenimiento

Heating/cooling modes are controlled by 4 shuttle
valves, which depending on the outdoor temperature,
switch between the different modes.
The window on the valve
can either be blue or red
depending on whether
FIGHTER 1330 is heating
or cooling.
Heating
Passive cooling
Active cooling
The above applies when the installation is voltage fed.
* When a room sensor is connected, RG 10, see
FIGHTER 1330 Installation and Maintenance
Instructions, section Description of Functions —
Basic functions > Room control.
Shuttle valves

Valve inspection

129
FLOWCONTROL FLOWCONTROL
red
red
blue
129
130
HPAC 42 HPAC 42
When changing the heating/
cooling mode there is a delay of
approximately 90 seconds before
the position of the shuttle valves
130
FLOWCONTROL
red red
red blue
blue blue
NOTE!
changes.
131 132
FLOWCONTROL
red
blue
blue
132
131
17 17