Buderus 600 - 11S Installation And Maintenance Instructions Manual page 58

5 Servicing
5.3.28 Checking connections at the ModuLink or
Check contact link between cable and ModuLink or
There should be a DC voltage of approx. 11.5 V at the
ModuLink or RT.
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NOTE
It is possible, in order to limit the source of
errors, to disconnect the ModuLink or
the boiler (bridge required at 3 and 4) and to
install a conductor bridge at 1 and 2 (fig. 87).
The heating and hot-water requirement is then
passed via the potentiometer setting of the
UBA.
5.3.29 Checking KIM connections
Locate KIM on boiler frame under UBA housing.
Check 4 pin connector (fig. 88, item 1) is fitted and secure.
NOTE
This is not a serviceable part and any fault
identified with this component, contact
Buderus.
Buderus • http://www.buderus-domestic.co.uk
58 Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 02/2006
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RT
RT.
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RT from
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Fig. 87 Checking the controller-device connections at the
Key to control-device connections:
Item 1:
Item 2:
Item 3:
Item 4:
Item 5:
Item 6:
Fig. 88 KIM connections
Subject to modifications resulting from technical improvements!
boiler
ON/OFF temperature controller
ModuLink or RT room temperature controller (digital)
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I/O port / communication port
Outdoor-temperature sensor
Power supply 24 VAC/max. 6 VA
Turn-on voltage for three-way valve (9+11)
1
1
2
3
4
5
6