On-Site Connections On The Hmbu Heat Management Unit; Outside Temperature Sensor; Connecting The Low Loss Header Sensor ) - Viessmann Vitodens 100-W B1HF Series Installation And Service Instructions Manual

Installation sequence
Electrical connections
Cylinder temperature sensor (system boiler)
E
X Equipotential bonding (earth conductor)
sÖ

On-site connections on the HMBU heat management unit

A
Fig. 15
Diaphragm grommets, 230 V cables
A
Diaphragm grommets, extra low voltage (ELV)
B

Outside temperature sensor

Fitting location for outside temperature sensor
■ North or north-westerly wall, 2 to 2.5 m above
ground level; in multi storey buildings, in the upper
half of the second floor
■ Not above windows, doors or vents
Not immediately below balconies or gutters
■
Never render over.
■
Connecting the low loss header sensor
The sensor of the low loss header is connected to the
accessory extension EM-P1 or EM-M1/MX (ADIO elec-
tronics module) respectively.
24
(cont.)
B
)
Note on connecting accessories
When connecting accessories observe the sep-
arate installation instructions provided with
them.
■ Open diaphragm grommets as required. Thread
through only one cable at a time without a plug.
Ensure diaphragm grommets are airtight. If required,
remove plug from cable. After threading the cable
through, re-fit the plug to the wire ferrules.
■ For cables without strain relief bushings, provide
strain relief in the wiring chamber in the form of cable
ties.
Outside temperature sensor connection
See page 23
2-core lead, length up to 35 m with a cross-section
of 1.5 mm 2
See installation instructions for extension EM-P1
or EM-M1/MX