Viessmann VITOTRONIC 300-K Operations Instructions Page 58

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Vitotronic 200 and 300-K Installation and Service
5693 976 - 04
58
“DHW” Group (continued)
Coding in the factory set condition Possible change
67:40 With the Vitosolic:
Third set DHW temperature 104°F (40°C).
Reheating will be suppressed above the
selected temperature. The DHW tank is heated
exclusively by the solar thermal system.
67:0 Without third set DHW temperature
67:1
to
67:95
Input of the third set DHW temperature;
adjustable from 34 to 203°F (1 to 95°C)
(subject to boiler coding card of the connected
boilers)
68:8 With 2 DHW tank temperature sensors (code
“55:2”):
DHW tank heating stop point at set value x 0.8
68:2
to
68:10
Factor adjustable from 0.2 to 1;
1 step
0.1
69:7 With 2 DHW tank temperature sensors
(code “55:2”):
DHW tank heating start point at set value x 0.7
69:1
to
69:9
Factor adjustable from 0.1 to 0.9;
1 step
0.1
6A:75 Runtime, servomotor, mixing valve, heat
exchanger set, Vitotrans
222, 80 and 120 kW:
75 sec.
6A:10
to
6A:255
For heat exchanger set
Vitotrans 222, 240 kW: set 113 sec.
Runtime adjustable from 10 to 255 sec.
70:0 DHW recirculation pump “ON” according to
time program when DHW heating is enabled
70:1 DHW recirculation pump “ON” according to
time program
71:0 DHW recirculation pump: “ON” according
to time program
71:1 “OFF” during DHW heating to the first set
value
71:2 “ON” during DHW heating to the first set value
72:0 DHW recirculation pump: “ON” according
to time program
72:1 “OFF” during DHW heating to the second set
value
72:2 “ON” during DHW heating to the second set
value
73:0 DHW recirculation pump: “ON” according
to time program
73:1
to
73:6
During time program 1x/h for 5 min. “ON”
to
6x/h for 5 min. “ON”
73:7 Constantly “ON”
75:0 DHW recirculation pump “ON” during economy
mode according to time program
75:1 DHW recirculation pump
“OFF” during economy mode according to time
program
Coding 2 Vitotronic 300-K
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