21
DHC 23 SERVICE BY THE HEATING SPECIALIST
■■
Overview of operating parameters DHC 23-3
q
Turn programming switch into auto position.
w
Different values can be displayed by turning the service switch into the positions
0 ... F (see Table).
e
The parameters can then be changed with the aid of the push and turn knob.
Position Operating parameter Range Basic setting
0 Time 0:00...23:59 current time
1 Day, month or year 1990...2089 current date
2 Max. flow setpoint 30 ... 120°C 90°C
3 Night setpoint 0...20°C 10°C
4 Frost protection limit -10...15°C 2°C
5 Heating characteristic slope 0.4...4.5 1.6
6 Building construction
for optimization 0, 1, 2, 3 0
0 = optimization off
1 = light construction
2 = medium construction
3 = heavy construction
7 Valve actuator M1 running time 10...1800 s 120 s
8 Valve actuator M2 running time 10...1800 s 30 s
9 Max. inlet temperature in
WW heat exchanger (VF
1
) 40...90°C 90°C
A = 10 District heating valve minimum lift 0...30 % 0 %
B = 11 Maximum district heating return
temperature in heating mode 40...90°C 90°C
C = 12 Onset point of floating district
heating return temperature limitation -20...10°C 10°C
D = 13 Reset time 1...30 min. 3 min.
E = 14 Controller gain 1...30%/K 3 %/K
F = 15 (not used)
}
M 1
Programming switch
Service switch
Push and turn knob
10878_BDA_DHC23_engl_neu 06.09.1999 13:50 Uhr Seite 23
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