Dhw" Group - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Vitotronic 300, GW5B & MW1B Installation and Service
"Cascade" Group
Coding in the factory set condition
43:31 No ECO threshold boiler 3.
44:31 No ECO threshold boiler 4.
45:60 Start integral threshold set to 60 K x min.
46:40 Stop integral threshold set to 40 K x min.
47:15 Stop differential set to 15 K.
48:35 Do not adjust.
49:40 Do not adjust.

"DHW" Group

Coding in the factory set condition
55:0 DHW tank heating, hysteresis ± 2.5 K.
56:0 Set DHW temperature adjustable from 50 to
140° F (10 to 60° C).
58:0 Without auxiliary function for DHW heating.
59:0 DHW tank heating:
Set start point –2.5 K
Set stop point +2.5 K
5A:0 For DHW heating:
The set supply temperature is determined
by the highest system supply temperature
demand.
60:20 During DHW heating, the common supply
temperature is max. 20 K higher than the set
DHW temperature.
61:1 The circulation pump for DHW tank heating is
started immediately.
(continued)
Possible change
43:−30 ECO threshold boiler 3 adjustable from
to -22 to +86° F (−30 to +30° C).
43:+30
44:−30 ECO threshold boiler 4 adjustable from
to -22 to +86° F (−30 to +30° C).
44:+30
45:1 Start integral threshold adjustable from 1 to
to 255 K x min.
45:255
Note: If the threshold is exceeded, one boiler
or one burner stage is switched on.
46:1 Stop integral threshold adjustable from 1 to
to 255 K x min.
46:255
Note: If the threshold is exceeded, one boiler
or one burner stage is switched off.
47:2 Stop differential adjustable from 2 to 30 K.
to
Note: One boiler or one burner stage will
47:30
be switched off if the actual supply
temperature exceeds the set supply
temperature by this value.
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Possible change
55:1 Adaptive DHW tank heating enabled.
55:2 DHW tank temperature control with 2 DHW tank
temperature sensors.
55:3 DHW tank temperature control, primary store
system.
56:1 Set DHW temperature adjustable from 50 to 194° F
(10 to 95° C).
Note: Observe the max. permissible DHW
temperature.
Adjust the temperature controller "R".
58:10 Input of a second set DHW temperature,
to adjustable from 50 to 194° F (10 to 95° C).
58:60 (observe coding addresses "56" and "63").
59:1 Start point adjustable from 1 to 10 K below set
to value.
59:10
5A:1 For DHW heating:
The set supply temperature is determined by the
DHW tank supply temperature demand.
60:10 The differential between the common supply
to temperature and the set DHW temperature is
60:50 adjustable from 10 to 50 K.
61:0 The circulation pump for DHW tank heating is
started depending on the boiler water temperature.
Code 2, Vitotronic 300-K
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