Technical data

99
Initial start-up
Further step-by-step instructions (continued)
Vitocontrol-S, VD2/CT3/CM2
Relay test
1. Press 9 and simultaneously for
approx. two seconds.
2. Select the relay outputs
with or .
3. Press .
The following relay outputs may be selected:
Output 20 ON
Output 29 ON
Output 52 open
Output 52 ntr.
Output 52 close
DHW tank heating pump ON
DHW recirculation pump ON
Heating pump (M2) ON
Heating pump (M3) ON
Mixing valve (M2) open
Mixing valve (M2) close
Mixing valve (M3) open
Mixing valve (M3) close
Central fault display ON
Please note:
The illuminated heating circuit selector
button indicates the corresponding
heating circuit.
Check sensors
1. Press .
Scanning operating conditions is
active, see page 111.
2. Scan the actual temperature with
or .
3. Press .
Scanning is completed.
Selecting the boiler sequence (Vitocontrol-S, VD2/CT3)
1. If required:
In coding 2, set coding addresses
“39” (permanent lead boiler) and
“3A” (permanent last boiler).
2. Press and simultaneously for
approx. two seconds.
3. Select the required boiler sequence
with or .
By pressing and
simultaneously, you can exit the
adjustment without saving any
modifications made.
4. Press .
The adjustment has been
transferred.
5. In coding 2, set the coding
addresses “38”, “41”, “42”, “43”
and “44”, see also the function
description from page 168.
5351 340 v1.4
Relay test
1
2
3
Relay test
1
2
3
Relay test
1
2
3