Viessmann B0KA - Connecting the Cylinder Temperature Sensor; On-Site Connections on the HBMU Heat Management Unit; Outside Temperature Sensor

25
On-site connections on the HBMU heat management unit
A
Fig. 17
A
Diaphragm grommets for cables
■
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, refit the plug with wire ferrules.
■
For cables without strain relief bushings, provide
strain relief in the wiring chamber in the form of cable
ties.
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.
Outside temperature sensor connection
See page 24.
2-core lead, up to 35 m long with 1.5 mm
2
cross-sec-
tion
Connecting the cylinder temperature sensor
Connect cylinder temperature sensor to terminals E
.
See page 24.
Installation sequence
Electrical connections (cont.)
6179762
Installation