27
Accessories with direct mains connection
74 74
40
74
40
B
C
40
A
E
D
74
74
40
PlusBus
Fig. 17
A
HBMU heat management unit, heat generator
B
Mixer extension kit
C
EM-EA1 extension and/or EM-S1 extension
D
EM-P1 extension
E
External ON/OFF switch
fÖ
Mains input
jF
PlusBus
Note
PlusBus system length max. 50 m for 0.34 mm
2
cable
cross-section and unshielded cable.
If the current flowing to the connected working parts
(e.g. circulation pumps) is higher than the fuse rating
of the relevant accessory, only use the output con-
cerned to control an on-site relay.
Note
Use addressing for rotary selector S1. See also the
information in chapter "Notes on connecting PlusBus
subscribers".
Accessories
Internal fuse protec-
tion
EM-M1, EM-MX mixer exten-
sion kit
2 A
EM-EA1 extension
2 A
EM-S1 extension (not for Vito-
dens 111-F)
2 A
Danger
Incorrect wiring can lead to serious injury from
electrical current and result in appliance dam-
age.
■
Route extra low voltage (ELV) leads < 42 V
separately from cables
>
42 V/230 V~.
■
Strip as little of the insulation as possible,
directly before the terminals, and bundle close
to the corresponding terminals.
■
Secure cables/leads with cable ties.
Power supply
fÖ
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord-
ance with the following regulations:
■
IEC 60364-4-41
■
IEEE Wiring Regulation; BS 7671:2018
■
Connection conditions of the local grid opera-
tor
■
Install an isolator in the power cable to provide
omnipolar separation from the mains for all active
conductors, corresponding to overvoltage cate-
gory III (3 mm) for complete isolation. The isolator
must be fitted in the permanent electrical installation,
in line with installation requirements.
We also recommend installing a pulse current-sensi-
tive RCD (RCD class A
).
■
Connect the power cable to the electricity supply
using a fixed connection.
■
If the power supply to the appliance is connected
with a flexible power cable, ensure that the live con-
ductors are pulled taut before the earth conductor in
the event of strain relief failure. The length of the
earth conductor wire will depend on the design.
■
Max. fuse rating 16 A.
Installation sequence
Electrical connections
(cont.)
6167586
Installation