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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
V E N T I L A T I O N & H E A T R E C O V E R Y
9.3.2 External control input
With the external control input supplied as standard,
the M-WRG-II unit has an additional input terminal for
230 V AC (working voltage range: 85 V AC to 265 V AC /
50-60 Hz) to which a switch, time switch, motion detector
or similar may be connected.
The external control input is equipped with a time-delay
relay that can be used to set a switch-on delay and a
run-on time:
— Switch-on delay: the M-WRG-II unit does not start until
the set time has elapsed.
— Run-on time: the M-WRG-II unit does not switch to the
previously active ventilation program until the set time
has elapsed.
Windowless rooms can be ventilated in accordance with
DIN 18017-3 in combination with the M-WRG-II O/NOF
option, part no. 721004.
9.3.3 Option M-WRG-II O/EGG-AUS
Part no. Option M-WRG-II O/EGG-AUS
Type of control cable
721003 “Unit OFF” input, e.g. via an external smoke
detector or window contact
J-Y (St) Y 2x2x0.6 mm /
J-Y (St) Y 2x2x0.8 mm
Potential-free fault indicator output
J-Y (St) Y 2x2x0.6 mm /
J-Y (St) Y 2x2x0.8 mm
Table 3: Option M-WRG-II O/EGG-AUS
The connection board for the
M-WRG-II O/EGG-AUS option has
— 3-pole connection for fault indicator
output
— 2-pole connection for “Unit OFF”
input
We recommend that you use separate
cables for the input and output.
NOTICE
The M-WRG-II O/EGG-AUS option
must be installed at the factory.
Fig. 12: Connection diagram for
external control input
L
230 V~
N
S L N M-WRG-II
Mains cable type:
NYM-J 4 x 1.5 mm
2
Fig. 13: Connection diagrams for
M-WRG-II O/EGG-AUS option
+24
V
C
O
M
N
O
N
C
M-WRG-II
fault indicator
M-WRG-II
“Unit OFF”
by client
by client
5 to 28 V
max.
1.5 A
GND
orange
blue
green
grey
grey
