WIRING DIAGRAM
WR 600
Version: 2019-05-22 - 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
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WR 600 ventilation unit with RLS 1 WR room air control and differential pressure
controller
Parallel operation of fireplace and ventilation unit
The differential pressure controller P is a safety device, which allows a ventilation system to be operated at the same
time as an air-ventilated fireplace.
The differential pressure controller, e.g. Wodtke DS 01, prevents a ventilation unit that is connected to this safety de-
vice being operated, if there is negative pressure in the living room.
The potential-free relay contact (n/c) in the differential pressure controller switches the fans in the ventilation unit off, if
required. Relay contact k is connected in series to the fans' supply voltage for this purpose.
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 at the same ventilation level as before it
was blocked.
When selecting the differential pressure controller, note the technical data of the switching output (potential-free relay
contact k). Minimum switching capacity: 230 V AC, 2A
The connection between the differential pressure controller and ventilation unit is made with W3" connecting cable.
The potential-free relay contact k of the differential pressure controller P is connected to control circuit board A2 at ter-
minals "N" and " ".
Before this, the jumpers on the terminals "N" and " " on the control circuit board A2 must be removed.
A1 - electrical terminal box WR 600
A2 - control circuit board
B1 - room air control RLS 1 WR
P - differential pressure controller with potential-free relay contact k (provided by customer)
k - switching output, potential-free relay contact
W3" - connecting cable for differential pressure controller (provided by customer)
ABL - exhaust air
ZUL - supply air