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LWZ 304-404 SOL |
35
INSTALLATION
Settings
COLLECTOR PROTECTION
See chapter "Collector protection temperature".
PRIORITY SOLAR
With parameter "PRIORITY SOLAR" you can select the priority for
the cooling mode if a solar thermal system is connected. Possible
settings are "SOLAR", "COOLING" and the time-controlled setting
via "COOLING TIME". This programs the cooling period.
Option Effect
SOLAR
POWER
Cooling is not enabled for as long as the solar starting conditions
are met and the maximum system temperatures (max. DHW and
max. heating circuit) have not been reached.
COOLING
The "solar overheating" function and collector protection are deac-
tivated. The solar start conditions are checked as soon as cooling
ends.
COOLING
TIME
The "solar overheating" function and collector protection function
are deactivated under a time control. There is a specific parameter
for the cooling time, which can be used to adjust it (see chapter
"Cooling time").
COOLING TIME
With parameter "COOLING TIME" you can select the period for
which collector protection is to be disabled. Cooling time will only
be considered if the value "COOLING TIME" is set in parameter
"PRIORITY SOLAR".
In parameters "Start" and "End" set the required times.
DRY HEATING PROGRAM
!
Material losses
Never ventilate when dust is being generated in the
house, for example when cutting tiles or sawing plas-
terboard.
If an underfloor heating system is installed, you can activate
screed drying with the "DRY HEATING PROGRAM" (see menu "Set-
tings"). Here, you can specify a temperature curve as provided by
the screed contractor for gently drying the screed. The program is
started by setting the "START" parameter to "ON". The appliance
heats until the "LOW END TEMPERATURE" (P71) has nearly been
reached (max. deviation 5 °C). After that, the low end temperature
is constantly maintained for the number of days set under "TEMP.
RISE PERIOD". The set temperature is then increased by the value
set under "GRADIENT", given in Kelvin per day (K/d).
Dry heating program curve
5
7
4
6
3
2
D
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8
1
X Time
Y Temperature
1 "START"
2 "LOW END TEMPERATURE"
3 "TEMP. RISE PERIOD"
4 "GRADIENT" [K/d]
5 "High end temperature"
6 "Max Hut Time"
7 End
When this temperature has been reached, the set temperature
is increased further. When the high end temperature set under
the "HIGH END TEMPERATURE" parameter has been reached, the
temperature will be held constant for the time set under "MAX HUT
TIME". The temperature is then reduced to the low end tempera-
ture in the same steps. The screed drying program (dry heating
program) is completed when "OFF" is displayed under the "START"
parameter.
If the screed drying program is interrupted by a power failure or
the appliance being switched off, the dry heating program contin-
ues when the appliance is switched back on. If the screed drying
program (dry heating program) is to be cancelled, set the "START"
parameter to "OFF".
Drying out can take a long time, as the heat pump output is in-
sufficient for this purpose. If necessary, also switch on the boost-
er stages. Always expect a considerably higher energy demand
during drying out.
The dual mode point is not taken into consideration during drying
out. The booster stages are always enabled when the controller
detects a deviation above the hysteresis.
If no work is being carried out that generates dust, you can start
ventilation during drying out, to extract humidity efficiently. This
can result in condensate escaping from the appliance. Condensate
will stop escaping when more regular operating conditions are
restored.
