Viessmann VITOTRONIC 300-K Operations Instructions download pdf (Page 39)

5693 976 - 04

Vitotronic 200 and 300-K Installation and Service

“Solar” Group

Coding

Coding in the factory set condition Possible change

Speed control solar circuit pump

02:0 Solar circuit pump (multi stage) without speed

control by solar control module SM1.

02:1 Solar circuit pump (multi stage) is speed-

controlled with wave pack control.

02:2 Solar circuit pump is speed-controlled with PWM

control.

DHW tank maximum temperature

08:60 The solar circuit pump stops when the actual

DHW temperature reaches the maximum

DHW tank temperature 140°F (60°C).

08:10

08:90

The maximum DHW tank temperature

is adjustable from 50 to 194°F (10 to 90°C).

Stagnation time reduction

0A:5 To protect system components and heat

transfer medium: the speed of the solar

circuit pump is reduced if the actual DHW

temperature is 5 K below the maximum DHW

tank temperature.

0A:0 Stagnation time reduction is disabled.

0A:1

0A:40

Value for stagnation time reduction is adjustable

from 1 to 40 K.

Flow rate solar circuit

0F:70 The solar circuit flow rate at maximum pump

speed is 1.8 GPM (7 L/min).

0F:1

0F:255

Flow rate adjustable from 0.02 to 6.76 GPM

(0.1 to 25.5 L/min);

1 step

0.02 GPM (0.1 L/min).

20:0 No extended control functions enabled. 20:1 Additional function for DHW heating.

20:2 Differential temperature control 2.

20:3 Differential temperature control 2 and auxiliary

function.

20:4 Differential temperature control 2 for central

heating backup.

20:5 Thermostat function.

20:6 Thermostat function and auxiliary function.

20:7 Solar heating via external heat exchanger

without additional temperature sensor.

20:8 Solar heating via external heat exchanger

with additional temperature sensor.

20:9 Solar heating of two DHW tanks.

Note: The solar group is only displayed if a solar control

module, type SM1, is connected.

Coding 1 Vitotronic 300-K

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 95 96

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Viessmann VITOTRONIC 300-K Operations Instructions Page 39

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