Checking Outputs (Relay Test) - Viessmann VITODENS 200-W Service Instructions Manual

Temperatures, boiler coding card and brief . . .
Brief scan
E 0: no ex-
ternal de-
mand
1: external
demand
3 0
A 0
4 0
5 0
b 0
C 0
c 0
d 0

Checking outputs (relay test)

Weather-compensated control unit
Press the following keys:
1. K + d simultaneously for
approx. 2 s.
The following relay outputs can be controlled subject to system design:
Display screen
Base load
Full load
Int. pump ON
Heating circuit pump
M2 ON
Display screen
0: no exter-
nal block-
ing
1: external
blocking
0 Set boiler water temperature
0 Highest demand temperature
Burner control unit type
0 Set cylinder temperature
0 Max. output in %
Boiler coding card (hexadecimal)
Version
Equipment
0 0
2. a/b
3. d
Explanation
Burner modulation base load
Burner modulation full load
Int. output 20
Mixer extension
Service scans
(cont.)
External 0 to 10 V hook-up
Display in %
0: no external hook-up
Equipment type
Version
Burner control unit
Software
Variable
speed version
pump Variable
0 w/o speed pump
1 Wilo 0: no vari-
2 Grundfos able speed
pump
for the required relay out-
put.
Relay test is completed.
65