Operating and installation instructions
M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units
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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
16.6.2 Circuit diagram (example of a BUSCH-JAEGER three-step rotary switch with
zero position)
Fig. 36: Circuit diagram for wiring M-WRG-II P-T (-F, -FC) / M-WRG-II E-T (-F, -FC) ventilation units with control cable
and optional pushbutton/LED
+
24
VDC
0
V
+24 VDC
+24 VDC
0 V
1
5
3
2
01 02 03 04 05 06 07 08 09 10
03
01 02
10
04 05 06 07 08 09
Board in M-WRG-II P-T (-F, -FC) /
M-WRG-II E-T (-F, -FC)
ventilation unit 1
Board in M-WRG-II P-T (-F, -FC) /
M-WRG-II E-T (-F, -FC)
ventilation unit 2
Three-step rotary switch with
zero position
Optional: pushbutton and LED for intensive
ventilation
Optional: LED for inten-
sive ventilation
Ventilation level I
Ventilation level II
Ventilation level III
Intensive ventilation
NOTICE
Connect terminal 02 (+24 VDC) to one
ventilation unit only.
NOTICE
Feedback signals can-
not be switched togeth-
er to create a single
group signal.
NOTICE
— One to five ventilation units may be connected to the three-step rotary switch and to the inten-
sive ventilation pushbutton. No separate power supply is needed.
— Please note the following if you intend to connect more than one ventilation unit to the three-
step rotary switch:
— The terminals 01 (0 V) of all ventilation units must be connected to one another (see
— The terminal 02 (+24 V DC) of the three-step rotary switch may only be connected to the
terminal 02 of a single ventilation unit (see Fig. 36).
— The feedback from multiple ventilation units for intensive ventilation cannot be combined in a
single group signal.
— The total length of the control cable must not exceed 50 m.