Maico aeronom WR 300 Instructions De Montage Et Mode D'emploi page 91

Connection option 8:
Ventilation unit + Room air control +
Differential pressure controller/Smoke
switch. Refer also to the wiring diagram
in the appendix.
For the parallel operation of fire-
places and WR 300/WR 400. Note the
rules applicable to operations with
fireplaces in chapter 4.4.
The differential pressure controller [P]
is a safety device which allows a ventila-
tion 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 device
being operated, if there is negative pressure
in the living room.
The smoke switch [R] is a safety device for
the early identification of the presence of
smoke and for preventing it spreading within
residential units through the ventilation
system.
The potential-free relay contact (opener) in
the differential pressure controller/smoke
switch 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.
When selecting the differential pressure
controller/smoke switch, note the technical
data of the switching output (potential-free
relay contact k). Minimum switching
capacity: 230 VAC, 2 A
The connection between the differential
pressure controller/smoke switch and ventila-
tion unit is made with W3" connecting cable.
The potential-free relay contact [k] of the dif-
ferential pressure controller [P]/smoke switch
[R] is connected to control circuit board A2 at
terminals "N" and " ".
Before this, the jumpers on the terminals
"N" and " " on the control circuit board A2
must be removed.
A1 Ventilation unit WR 300/WR 400
A2 Control circuit board
B Room air control RLS D1 WR
B1 Room air control RLS 1 WR
P/R Differential pressure controller/Smoke
switch with potential-free relay contact k
(provided by customer)
k Switching output potential-free
Relay contact
W5 Connecting cable for differential
pressure controller/smoke switch
(provided by customer). External
diameter 3,2 ... 6,5 mm, z. B. LIYY
2 x 0,75 mm².
If there is negative pressure in the
i
room or if smoke is identified by the
smoke switch, the differential
pressure controller or the smoke
switch switches the fans in the
ventilation unit off.
This blocks the room air control. The
LED display goes out. The unit is only
released again when the differential
pressure controller/smoke switch
switches the fans back on. The venti-
lation unit runs at the same ventilation
level as before it was blocked.
89