Viessmann Type B2HA Operations Instructions download pdf (Page 151)

151

Fill program

In the delivered condition, the diverter

valve is set to its central position, ena-

bling the system to be filled completely.

After the control unit has been switched

on, the diverter valve no longer goes into

its central position.

Afterwards, the diverter valve can be

moved via the fill function into the central

position (see "Filling the heating sys-

tem"). In this position, the control unit can

be switched off, and the system can be

filled completely.

Filling with the control unit switched

on

If the system is to be filled with the control

unit switched on, the diverter valve is

moved in the fill program to its central

position and the pump starts.

When the function is enabled, the burner

shuts down. The program is automati-

cally disabled after 20 min.

Screed drying

When activating screed drying, observe

the information provided by the screed

manufacturer.

When the screed drying function is acti-

vated, the heating circuit pump in the

heating circuit with mixer is switched on

and the flow temperature is held in

accordance with the selected profile. On

completion (30 days), the heating circuit

with mixer is regulated automatically via

the set parameters.

Observe EN 1264. The report to be pro-

vided by the heating contractor must

contain the following heat-up details:

■ Heat-up data with respective flow tem-

peratures

■ Max. flow temperature achieved

■ Operating state and outside tempera-

ture during handover

The various temperature profiles can be

set via coding address "F1" in the "Heat-

ing circuit" group.

The function continues after power fail-

ure or after the control unit has been

switched off. "Heating and DHW" is star-

ted when screed drying is finished or if

code "F1:0" is set manually.

Temperature profile 1: (EN 1264-4) code "F1:1"

Flow

temperature °C

1 5 10 15 20 25 30

Days

50

40

30

20

10

Function description

Control functions

(cont.)

5772 909 GB

Service

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