Maico WS-VH 160 Manuel D'installation page 4

3 Safety instructions
Danger from electric shock:
Before removing the front
cover, shut down all supply cir-
cuits (deactivate the mains fuse)
and secure so they cannot be
switched back on. Attach warn-
ing sign in clearly visible place.
Danger of injury when fans
are running: Before removing
the front cover, wait until both
fans have stopped.
Danger of burning from hot
housing parts on units with
PTC heat register:
After removing the front cover,
do not touch the heat register.
First wait until the heat regis-
ter and the housing parts have
cooled off.
Store packaging material out of
the reach of children
suffocation if swallowed.
4 Retrofitting PTC heat register
4
L
N
PE
Risk of

NOTICE
Incorrect wiring will result in unit dam-
age. Only undertake electrical connections
according to wiring diagram ( installation
instructions).
NOTICE
If the connection cables are too short,
the electronic slide-in module cannot be
fully pulled out/fitted. Do not shorten the
connecting cable supplied. It is already cut to
the right length.
1. Switch off all supply circuits.
W1
2. Remove front cover(s)  Installation inst-
ructions for ventilation unit.
A
3. Loosen the screws of the electronic slide-
in module, remove slide-in module and
fit back in with main circuit board pointing
S1
forward and secure  Installation instruc-
tions for ventilation unit.
4. Slide protective grille [S] all the way into
the right and left guide slot [1] in the EPP
housing.
5. Slide PTC heat register all the way into
the right and left guide slot [2] in the EPP
ZP1
housing.
W4
6. Press the two fixing plugs [3] completely
into the heat register plate.
ZUL
ABL
W5
BK
PTC- Heizregister
PTC heat register
W6
7. Insert PTC heat register connection cable
Bypassmotor
W5 into slot [4] and cable conduit [5] and
WH
1
BN
feed through into the electronic compart-
2
M3
GN
3
4
ment.
YE
5
GR
6
B1
A1
A2
GNYE
BU
BN
GNYE
BU
BN
GNYE
BU
BN
GNYE
BU
BN
GNYE
BU
BN
W7
LD3
LD2
LD1
S1+
S2-
W2
W3
XO
X7 Bypass
1 2 3 4 5
WHBN GN YE GR