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 7
WS 170 ventilation unit with hygrostat and RLS 1 WR or RLS D1 WR room air con-
trol
W 1
G
N
Y
E
B
U
B
N
P E
N
L
W 4
A
B
W 2
W 2 '
I I
I
I I I
B 1
8
9
10
C O 2
B D E
O N / O F F
6
7
J u m p e r
1
A 2
2 3
1
r F >
r . F .
C O 2
A - WS 170 electronic slide-in module
A2 - Control circuit board: Jumper 8 bridged and jumper 10 (CO2) = open (= factory setting)
B - RLS D1 WR room air control
B1 - RLS 1 WR rH room air control HY 5 or HY 5 I hygrostat
W1 - 230 V AC connection cable
W2, W2´ - Control cable for room air control
W4 - Connection cable for external hygrostats (to be supplied by the customer). Connection to A2 control circuit board
at CO2 terminals
When connecting a hygrostat with potential-free contact for demand-driven removal of moisture, the hygrostat must
have a potential-free switching output.
The hygrostat always switches the ventilation unit to ventilation level 3 if the set humidity value is exceeded (poten-
tial-free contact in hygrostat closes).
If the humidity in the room drops, the ventilation unit switches back to the previously selected ventilation level.
If you switch manually from ventilation level 3 to level 2 or 1, this deactivates the automatic function of the hygrostat
temporarily. This is then switched back to active if the level drops below the hygrostat set point once.
Connect the hygrostat to terminal "CO2".
Jumper 10 on the A2 control circuit board must be open.
Set the switching point at the hygrostat manually.
Never connect a hygrostat and a CO2 sensor/VOC sensor at the same time.