Screed Drying Function - Bosch Worcester FW 100 Installation & User's Instructions

8.9

Screed drying function

Installer settings: Floor drying
The screed drying function allows fresh screed on
underfloor heating to be dried in accordance with
the screed manufacturer's instructions. All mixed
heating circuits are heated up equally.
Warning: Risk of damaging or de-
stroying the screed.
B With multi-circuit systems this
function can be used in combi-
nation with a mixed heating cir-
cuit.
B Program screed drying function
in accordance with screed man-
ufacturer's instructions.
B In spite of the screed drying
function, visit the system daily
and make the prescribed re-
ports.
DHW heating is not possible from
programming to completing the
screed drying function.
Menu: Floor drying
Cancel floor drying: If the screed drying func-
•
tion is activated, the function can be switched
off with Yes.
Maximum CH flow temperature: Enter the
•
maximum flow temperature (1) for the screed
drying function here.
Maintain max CH flow temp for: Enter the
•
timescale (2) here of when the maximum flow
temperature should be maintained.
Total floor drying time:
•
– The minimum total duration (3) is automat-
ically calculated by the heating controller.
This is based on a rise of flow temperature
of a maximum 10 K( °C) per day.
INSTALLER SETTINGS menu settings (for installers only)
6 720 617 763 (2008/09)
– A higher value must be entered for the
whole duration (3) if the screed cannot
bear this increase. This produces a corre-
sponding reduction in the daily increase.
– The first stage and the last stage of the
flow temperature is 25 °C (fixed value).
Example:
Maximum flow temperature (1) = 50 °C
Duration of maximum flow temperature (2) = 7
days
Max. increase/decrease in temperature per day
= 5 K
(
50°C 25°C –
×
2d ------------------------------------ -
5K
Total duration of screed drying (3) = 17 days
Start date: Enter the start date of the screed
•
drying here.
Start time: Enter the start time of the screed
•
drying here.
C
45
35
25
1d 1d
4
Fig. 25
1d 1 day
1 Maximum flow temperature
2 Duration of max. flow temperature
3 Total duration of screed drying
4 Start date and start time
t time
VL Flow temperature
For menu structure and adjustment range
page 55.
)
+ 7 d = 17d
2
1
1d 1d
t
3
6 720 613 058-06.1R
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