23
Fitting location for outside tempera-
ture sensor
■ North or north-westerly wall, 2 to
2.5 m above ground level; in multi
storey buildings, in the top half of the
second floor
■ Not above windows, doors or vents
■ Not immediately below balconies or
gutters
■ Never render over
Outside temperature sensor connec-
tion
2-core lead, length up to 35 m with a
cross-section of 1.5 mm
2
Power supply for accessories at plug
lH
230 V~
Where the boiler is installed in a wet
area, the connection of accessories to
the power supply must not be carried out
at the control unit. The power supply
connection for accessories can be made
immediately at the control unit, if the
boiler is installed outside wet areas. This
connection is switched directly with the
ON/OFF switch of the control unit.
If the total system current exceeds 6 A,
connect one or more extensions via an
ON/OFF switch directly to the mains sup-
ply (see next chapter).
Installation sequence
Electrical connections
(cont.)
5623 520 GB
Installation