Maico WS 170 L, Manual, Page: 43 / 122

2. Product information
│
UK
41
Item Designation Function
6 Main switch Mains switch On/Off.
7 Door contact
switch single
for standard
unit, double for
● comfort unit
● bypass unit
Safety device: Fans
and/or frost
protection heating
registers switch off
when the front cover
[1] is removed.
8 G4 air filter in
● standard unit
optional in
● comfort u
nit
● bypass unit
Filters coarse dirt
out of the air.
9 Pollen filter,
filter class F7 in
● comfort unit
● bypass unit
Filters the smallest
dirt out of the outside
air, e.g. pollen.
10 Electronic slide-
in module Contains the control
circuit board and optio-
nal extra circuit boards
for heating register or
bypass shutter.
11 Frost protection
heating register in
● comfort unit
● bypass unit
For preheating
the outside air.
12 Outside air fan Conveys fresh air
into the living area.
13 Outside air
temperature
sensor in
● bypass unit
Measures the outside
air temperature in the
outside air channel im-
mediately downstream
of the frost protection
heating register.
14 Outgoing air fan Conveys the used air
to the outside.
15 Bypass shutter
in
● bypass
unit
If the outside air is
cooler than the room
air (warm time of the
year), the outside air
can be fed straight
into the supply air
spaces via the front
cover's bypass.
16 Condensate
elbow
with reducer For connecting the
outlet hose. Conden-
sate collected in the
heat exchanger is dis-
charged via this hose.
17 Frost protection
temperature
sensor Measures the
temperature of the
outgoing air directly
downstream of the
heat exchanger.
18
Heat exchanger
ET-units with
enthalpy heat
exchanger
The heat transfer
between the exhaust
air and supply air
flows happens in the
heat exchanger.
19 Ø 125 mm
pipe elbow Optional

Accessories
20 Plug connector
with lip seal
Ø 125 mm Optional

Accessories
2.3 Controls, sensors
RLS
1
WR RLS 1 WR
room air control
for
● standard unit
● comfort unit
Optional for
● bypass unit
With step switch and
filter monitoring.
Operating modes:
Humidity protection,
ventilation
level 1, 2 or 3.
RLS
D1
WR RLS D1 WR
room air control
for
● bypass unit
Optional for
● standard unit
● comfort unit
Manual operation
(ventilation levels) or
with automatic time
program P1 or P2.
Parameters:
Switching times,
summer function,
bypass parameter.
SKD CO
2
sensor
(optional)
Records the carbon
dioxide content CO
2
.
The supply of fresh air
depends on level of
CO
2
in the room.
EAQ
10/2 Air quality con-
troller (VOC) Controls the unit in
terms of air quality.
HY Hygrostat
with potential-
free contact
(optional) Records the relative
air humidity. The
supply of fresh air
depends on the level
of relative humidity in
the room.