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
Risk of
suffocation if swallowed.
4
Retrofitting PTC heat register
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.
2. Remove front cover(s)
Installation inst-
ructions for ventilation unit.
3. Loosen the screws of the electronic slide-
in module, remove slide-in module and
fit back in with main circuit board pointing
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
housing.
6.
Press the two fixing plugs [3] completely
into the heat register plate.
M1
M2
BK/GR
BK/GR
WH
WH
YE
YE
OR
OR
ABL
ZUL
ZUL
ABL
r.F.
T-LET
T-FOL
T-ZUL
ZP1
BN
BU
GNYE
GNYE
BU
BN
WH
BN
GN
YE
PTC- Heizregister
Bypassmotor
BN
BU
GNYE
L
N
PE
S1
GNYE
BU
BN
GNYE
BU
BN
LD3
LD2
LD1
S1+
S2-
B1
W2
W2'
W1
W2
M3
1
2
3
4
5
6
W4
W6
W7
A
A1
W8
W9
MAICO
Steuerung KWL
1 2 3 4 5
X7
Bypass
T1
T2
T3
T4
X8
Fühler
X9
Abluft
Zuluft
X10
Digita
lR
S485
X11
X12
Sensoren
RLS
X13
X1
PE
NL
Netz
PE
NL
Option
X3
12
X4
PE
NL
PE
NL
Zuluft
Abluft
X5
PE
NL
Heizregister
X6
12
Kontakt
Ethernet
USB
2
1
X2
NC
NC
3.
3S
DS
C
AB
12V
LD2
LD1
S1+
S2-
LD3
24V
24V
4
3
2
1
S-ABL
W3
BK
WHBN GN YE GR
XO1
1 2 3 4
BT1
A2
LD3
LD2
LD1
S1+
S2-
B2-B5
W2
WH
BN
GN
YE
GR
W5
7. Insert PTC heat register connection cable
W5 into slot [4] and cable conduit [5] and
feed through into the electronic compart-
ment.
PTC heat register