Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 94

Code 2, Vitotronic 300-K
"DHW" Group
Coding in the factory set condition
62:10 Circulation pump with a run-on time after DHW
tank heating of max. 10 min.
64:2 During party mode and after external changeover
to constant operation with the standard room
temperature:
Constant DHW heating enabled and DHW
circulation pump "ON".
66:4 Input of the set DHW temperature:
At the control unit programming unit and all
installed Vitotrol 300A remote controls.
67:40 For solar DHW heating:
Set DHW temperature 104° F (40° C).
Reheating is suppressed above the selected set
temperature (DHW heating by the boiler only if
solar energy is not sufficient).
68:8 With 2 DHW tank temperature sensors
(code "55:2"):
DHW tank heating stop point at set value x 0.8.
69:7 With 2 DHW tank temperature sensors
(code "55:2"):
DHW tank heating start point at set value x 0.7.
6A:75 Runtime, servomotor, mixing valve, heat
exchanger set, Vitotrans 222, (80 and 120 kW):
75 sec.
70:0 DHW circulation pump "ON" according to time
program when DHW heating is enabled.
71:0 DHW circulation pump:
"ON" according to time program.
72:0 DHW circulation pump:
"ON" according to time program.
73:0 DHW circulation pump:
"ON" according to time program.
75:0 DHW circulation pump "ON" during economy
mode according to time program.
94
(continued)
Vitotronic 300, GW5B & MW1B Installation and Service
Possible change
62:0 Circulation pump without run-on.
62:1 Run-on time adjustable from 1 to 15 min.
to
62:15
64:0 No DHW heating, DHW circulation pump "OFF".
64:1 DHW heating and DHW circulation pump
according to time program.
66:0 At the control unit programming unit.
66:1 At the control unit programming unit and remote
control system circuit A1 (heating circuit ).
66:2 At the control unit programming unit and
remote control heating circuit with mixing valve
M2 (heating circuit 2).
66:3 At the control unit programming unit and
remote control heating circuit with mixing valve
M3 (heating circuit 3).
66:5 At the remote control system circuit A1
(heating circuit 1).
66:6 At the remote control heating circuit with
mixing valve M2 (heating circuit 2).
66:7 At the remote control heating circuit with
mixing valve M3 (heating circuit 3).
67:0 No third set value.
67:10 Set DHW temperature adjustable from 50 to
to 194° F (10 to 95° C). (limited by boiler specific
67:95 parameters).
Observe the setting of coding address "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.
6A:255 Runtime adjustable from 10 to 255 sec.
70:1 DHW circulation 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.
72:1 "OFF" during DHW heating to the second set
value.
72:2 "ON" during DHW heating to the second set
value.
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 circulation pump "OFF" during economy
mode.