Screed Drying Menu - Bosch HPC 400 Installation Instructions For Contractors

BOSCH
Frost protection limit temperature (outside temperature threshold)
Under this menu item the limit temperature for the frost protection
(outside temperature threshold) is set. It is only effective if Room and
outdoor temp. or Room and outdoor temp. is set in the Frost
protection menu.
&
NonCE: Domestic hot water pi pework may freeze if the
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frost protection limit temperature is set too low and in
• prolonged periods with outside temperature below 0 D C.
~
Adjust frost protection limit temperature (default
setting
=
5°C) to the heating system _
~
Do not set the frost protection limit temperature too
low. Damages caused by a low frost protection limit
temperature are not covered by the warranty.
~
Set the frost protection limit temperature and frost
protection for all heating/cooling circuits.
~ To ensure frost protection for the entire heating
system. set either Room and outdoor temp. or
Room and outdoor temp. in the
Frost protection menu.
If the outside temperature exceeds the frost protection limit
temperature by 1 K
(O
C) and there is no heat requirement from the
heating system, the heating pump switches off.
• If the outside temperature drops below the frost protection limit
temperature. the heating pump switches on.
Service menu
The Room temperature setting does not offer absolute
frost protection. because pipework installed in fa~ades.
for instance. can freeze. This can happen even though
the temperature in the reference room is considerably
above 5°C as the result of outside heat sources. As an
outside temperature sensor is installed. frost protection
can be assured for the entire heating system:
~
In the Frost protection menu. set either Room and
outdoor temp. or Room and outdoor temp ..
6.3.4 Screed drying menu
A screed drying program is set for the selected heating circuit or the
entire heating system in this menu. To dry a new screed the heating
system automatically runs the screed drying program once.
In case of a voltage failure the user interface automatically continues
with the screed drying program. The voltage failure. however. may not
last longer than the power reserve of the user interface or a maximum
duration of an interruption.
This menu is only available if at least one underfloor heating circuit is
installed and set in heating system.
&
NOTICE: Risk of damaging or destroying the screed!
, ~ With multi-circuit systems. this function can only be
• used in combination with a heating circuit with
mixing valve.
~ Set the screed drying according to the instructions of
the manufacturer.
~ In spite of the screed drying function. visitthe system
daily and keep the prescribed records.
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Dwell time before start
No dwell time
The screed drying program starts after the set waiting time (selected heating circuits are switched off
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Start phase duration
Start phase temperature
Heat-up phase step width
Heat-up phase temp. diff
Holding phase duration
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Holding phase temp.
Cool-dn phase step wdth
, Cool-down phase t.diff
Endphase duration
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tEnd
phase temperature
Max. interruption time
Screed dry. system
,
1 ... 50days
No start phase
1 ...
3 ...
30days
20 ... 25 ... 55°C
No heat-up phase
1 ... 10 days
1... 5 ... 35K
1 ... 7 ... 99 days
20 ... 55 °C
No cool-down phase
1 ... 10 days
1... 5 ... 35K
I during the waiting time. frost protection is active; default setting: no waiting time.
~
Fig. 13. time before
day 0)
TIme lag between the beginning of the start phase and the next phase
(~
Fig. 13. [1])
Flow temperature during the start phase
( ~
Fig. 13. [1))
TIme lag between the steps (step width) in the heat-up phase
(~
Fig. 13]3])
Temperature differential between the steps in the heat"\Jp phase
(~
Fig. 13. [2])
~
Time lag between the beginning of the holding phase (duration of the maximum temperature for screed
drying) and the next phase (~Fig. 13. [4])
Flow temperature during the holding phase
( ~
Fig. 13. [4])
Time lag between the steps (step width) in the cooling phase
( ~
Fig. 13. [5))
Temperature differential between the steps in the cooling phase
( ~
Fig. 13. [6])
No end phase TIme lag between the beginning of the end phase (last temperature step) and the end of the screed drying
"" p -e- r m -a -ne - n -: U - y - - ' - - - - - program
(~
Fig. 13.
[7])
UOdays
1
20 ... 25 ... 55"C
2 ... 12 ...
24h
Yes
No
Flow temperature during end phase
( ~
Fig. 13. [7])
Maximum duration of a screed drying interruption (e.g. through stop of the screed or power failure) until a
fault display is output.
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Screed drying is active for all heating circuits of the system
Notice: Single heating circuits cannot be selected. DHW heating is not possible. The menus and menu
items with settings for DHW are disabled.
Screed drying is not active for all heating circuits
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Notice: Single heating circuits can be selected. DHW heating is possible. The menus and menu items with
settings for DHW are enabled.
~--------~----------~--------------
Table
30
Setting in the Screed drying menu (Fig.
13
shows the default setting
of
the screed drying program)