Wiring Diagrams
MOUNTING
Note: Be sure to connect all the wires as per the wiring diagrams and keep it away from water,
mud and other material so as to prevent the unit being spoiled!
1.
Open the main control
panel: put the screwdriver
(3.5mm) into the block
4mm along the bevel.
Prize up, open the clips.
2.
Take off the wires.
3. As per wiring diagram,
connect it with terminals,
fixed by the screwdriver.
4.
Put the connected
thermostat onto the back
panel in the wall, then fix
it with the two screws in
the packing box.
5. Put the cover with 30
degree angle, then fix the
up two clips;
6. Push the places of the
two down clips, fix the
cover, and finish the
installation.
Med
Low
H
7990
25
L
N
Val
Fan
Valve
AC85
～
260V 50/60Hz
N L
Hi
Low
H
7990
27
L
N
VO
Med
Fan
Valve
VC
AC85
～
260V 50/60Hz
N L
Hi
Val2
Low
H
7
990
26
L
Cooling
N
Med
Fan
Val1
4-pipe
L
Cooling
N
Mid
mI
Low
Fan
Val1
Val2
Heating
AC85
～
260V 50/60Hz
N L
Hi
l
2
Heating
AC85
～
260V 50/60Hz
N L
Hi
Close
Open
H7
990
28
N
L
Fan
AC85
～
260V 50/60Hz
N L
HERZ Armaturen Gws.m.b.H
Richard-Strauss-Strasse 22,1230 Vienna, Austria.
4
