WIRING DIAGRAM
WS 170 KR
Version: 2019-08-30 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the
right to make technical modifications without giving prior notice
Page 8
WS 170 ventilation unit with differential pressure controller and RLS 1 WR or RLS
D1 WR room air control
W 5
k
P
W 1
G
N
Y
E
B
U
B
N
B
W 2
W 2 '
I I
I
I I I
B 1
L1
N
L1
N
N
L1
L1
N
L1
L1
N
O
T
LD
2
O
T
S
2
S
1
LD
3
LD
1
8
9
10
C O 2
B D E
O N / O F F
6
7
J u m p e r
1
N
A
b
lu
ft
Z
u
lu
ft
A 2
A
P E
N
L
A - WS 170 electronic slide-in module
A2 - Control circuit board: Jumper 8 bridged (= factory setting)
B - RLS D1 WR room air control
B1 - RLS 1 WR room air control
P - Differential pressure controller with potential-free relay contact k (provided by customer)
k - Switching output, potential-free relay contact
W5 - Connection cable for differential pressure controller (provided by customer)
If there is negative pressure in the room, the differential pressure controller switches the fans in the ventilation unit off.
This blocks the room air control RLS 1 WR. The LED display goes out. The unit is only released again when the differ-
ential pressure controller switches the fans back on. The ventilation unit runs again at the same ventilation level
as before it was blocked.