29
Outside temperature sensor
!
For fitting the wireless outside temperature sensor
(wireless accessory):
Wireless base station installation and service
instructions
Fitting location for outside temperature sensor
■
North or north-western 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
2-core lead, length max. 35 m with a cross-section of
1.5 mm
2
Connecting the collector temperature sensor
Note
Solar control module
C
is secured to the l.h. side of
the air box.
B
%
&
aVG
C
A
D
Fig. 21
Connect collector temperature sensor
A
to terminal
box
B
of the lead prefitted to SM1 solar control mod-
ule
C
.
On-site extension cable
D
: 2-core, cross-section
1.5 mm
2
.
Note
Cylinder temperature sensor
%
is connected at the
factory.
External demand via switching contact
Connection options:
■
EA1 extension (accessory, see separate installation
instructions)
■
Plug
lH
When the contact is closed, burner operation is load-
dependent. The boiler water is heated to the set value
selected in coding address "9b" in group
"General"/1
.
The boiler water temperature is limited by this set
value and by the electronic maximum limit (coding
address "06" in group
"Boiler"/2
).
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be floating
and
meet the requirements of protection class II.
Installation sequence
Electrical connections
(cont.)
5773 238 GB
Installation
