Viessmann VITOTRONIC 200 Installation And Service Instructions Manual page 90

Coding 2 Vitotronic 300-K
"DHW" Group
Coding in the factory set condition
"For solar DHW heating: DHW temperature target"
67:40 For solar DHW heating: DHW temperature
setpoint 104°F (40°C). Reheating is
suppressed above the selected set temperature
(DHW heating by the boiler only if solar energy
is not sufficient).
"With 2 tank temperature sensors: Tank heating stop point"
68:8 With 2 DHW tank temperature sensors (code
"55:2"):
DHW tank heating stop point at set value x 0.8
"With 2 tank temperature sensors: Tank heating start point"
69:7 With 2 DHW tank temperature sensors
(code "55:2"):
DHW tank heating start point at set value x 0.7
"Runtime, actuator, mixing valve, heat exchanger set, Vitotrans 222"
6a:75 Runtime, servomotor, mixing valve, heat
exchanger set, Vitotrans 222, (80 and 120
kW): 75 sec.
"DHW recirculation pump"
70:0 DHW recirculation pump "ON" according to
time program when DHW heating is enabled
71:0 DHW recirculation pump: "ON" according
to time program
72:0 DHW recirculation pump: "ON" according
to time program
73:0 DHW recirculation pump: "ON" according
to time program
75:0 DHW recirculation pump "ON" during economy
mode according to time program
90
(continued)
Vitotronic 200, HO1B and 300-K, MW2C Installation/Service
Possible change
67:0 No set value 3.
67:1 DHW temperature setpoint adjustable from
to 50 to 203°F (10 to 95°C)
67:95 (limited by boiler-specific coding).
Observe setting of coding "56".
68:2 Factor adjustable from 0.2 to 1;
to 1 step 0.1
68:10
69:1 Factor adjustable from 0.1 to 0.9;
to 1 step 0.1
69:9
6a:10 For heat exchanger set Vitotrans 222, 240 kW:
to set 113 sec. Runtime adjustable from 10 to
6a:255 255 sec.
70:1 DHW recirculation pump "ON" according to
time program
71:1 "OFF" during DHW heating to set value 1
71:2 "ON" during DHW heating to set value 1
72:1 "OFF" during DHW heating to set value 2
72:2 "ON" during DHW heating to set value 2
73:1 "ON" from once per hour for 5 min up to
to 6 times per hour for 5 min during the time
73:6 program.
73:7 Constantly "ON"
75:1 DHW recirculation pump "OFF" during
economy mode