Maico WS 170 L, Manual, Page: 73 / 122

12. Appendix ‒ Wiring diagram for WS 170 standard unit │
UK
71
WS 170 standard unit
A WS 170 ventilation unit
A1 Electronic slide-in module
A2 Control circuit board
B RLS D1 WR room air control
B1 RLS 1 WR room air control
W1 230 V AC connection cable
W2 Shielded control cable provided by
customer, e.g. LiYCY 2 x 0.75 mm²
for RLS D1 WR room air control.
Instead of B1 (RLS 1 WR) room air
control, B (RLS D1 WR) room air
control can be connected.
W2´ Control cable (provided by
customer) for RLS 1 WR room air
control
Outer diameter of control cable
3.2...6.5 mm, e.g. LIYY 6x0.34 mm²
S1 Unit switch
M1 Supply air fan
M2 Exhaust fan
S Door contact switch: Activated
by front plate
T-min Frost protection temperature sensor
Supply air
Z1 (blue) Potentiometer adjuster
Ventilation level 1
Z2 (blue) Potentiometer adjuster
Ventilation level 2
Z3 (blue) Potentiometer adjuster
Ventilation level 3
Exhaust air
A1 (red) Potentiometer adjuster
Ventilation level 1
A2 (red) Potentiometer adjuster
Ventilation level 2
A3 (red) Potentiometer adjuster
Ventilation level 3
Jumper settings (Chapter 6.7.3)
J 1-3 Unit type, 000 = WS 170
J 4-5 Frost protection temperature
(Chapter 6.7.4)
J 6 No function
J 7 Jumper 7 open: Ventilation level 3
is reset after an hour.
J 8 RLS 1 WR or RLS D1 WR room air
control active: Leave factory setting,
J8 must be bridged.
J 9 Jumper 9 open: The ventilation
unit can be switched off at the
room air control.
Jumper 9 bridged:
Room air control RLS 1 WR:
Switch-off function blocked.
RLS D1 WR room air control:
Ventilation unit runs in "Humidity
protection ventilation" ventilation
level in the OFF switch position.
J10 Hygrostat or CO
2
/VOC sensor:
Without a sensor, jumper 10 must
be open.
Jumper 10 open: Hygrostat re-
leased with potential-free contact.
Jumper 10 bridged: CO
2
/ VOC
sensor (0 to 10 V output) released.
Further connection options
W3 Connection cable (provided by cus-
tomer) for external operating display.
k1 Potential-free relay contact
(max. 3 A / 250 V AC, 2 A / 30 DC).
The contact is closed when the ven-
tilation unit is running.
W4 Connection cable (provided by cus-
tomer) for external CO
2
or VOC
sensor or external hygrostat (with
potential-free contact).
W5 Connection cable (provided by custo-
mer) for external differential pressure
controller. Differential pressure con-
troller with potential-free relay contact.
Minimum switching power of relay
contact: 230 V AC/2 A.
Remove J1 bridge on A2 control
circuit board.