Daikin EBHQ006BAV3, Operation Manual

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Operation manual
13
0 EKCBX/H008BAV3
Unit for air to water heat pump system
4PW64603-1A – 08.2010
[2] Disinfection function
Applies only to installations with a domestic hot water tank.
The disinfection function disinfects the domestic hot water tank by
periodically heating the domestic hot water to a speci
fi c temperature.
■
[2-00] Operation interval: day(s) of the week at which the
domestic hot water should be heated.
■
[2-01] Status: de fi nes whether the disinfection function is
turned on (1) or off (0).
■
[2-02] Start time: time of the day at which the domestic hot
water should be heated.
■
[2-03] Set point: high water temperature to be reached.
■
[2-04] Interval: time period de fi ning how long the set point
temperature should be maintained.
[3] Auto restart
When power returns after a power supply failure, the auto restart
function reapplies the user interface settings at the time of the power
supply failure.
Note that with the function disabled the schedule timer will not be
activated when power returns to the unit after a power supply failure.
Press the
pr button to enable the schedule timer again.
■
[3-00] Status: de fi nes whether the auto restart function is
turned ON (0) or OFF (1) .
[4] Space heating off temperature
Space heating off temperature
■
[4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off, to avoid
overheating.
[9] Cooling and heating set point ranges
The purpose of this fi eld setting is to prevent the user from selecting a
wrong (i.e., too hot or too cold) leaving water temperature. Thereto
the heating temperature set point range and the cooling temperature
set point range available to the user can be con
fi gured.
■
[9-00] Heating set point upper limit: maximum leaving water
temperature for heating operation.
■
[9-01] Heating set point lower limit: minimum leaving water
temperature for heating operation.
■
[9-02] Cooling set point upper limit: maximum leaving water
temperature for cooling operation.
■
[9-03] Cooling set point lower limit: minimum leaving water
temperature for cooling operation.
CAUTION
The disinfection function fi eld settings must be con fi gured
by the installer according to local and national regulations.
T
DHW
Domestic hot water temperature
T
U
User set point temperature (as set on the user interface)
T
H
High set point temperature [2-03]
t Time
WARNING
Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in
fi eld
setting [2-03] after a disinfection operation.
If this high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (
fi eld
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to local and national regulations.
00.00 22.00 24.00 01.00 23.00 t
T
DHW
T
H
T
U
[2-02]
[2-03]
[2-04]
NOTICE
It is therefore recommended to leave the auto restart
function enabled.
NOTICE
If the bene fi t kWh rate power supply is of the type that
power supply is interrupted, then always allow the auto
restart function.
CAUTION
■
In case of a fl oor heating application, it is important to
limit the maximum leaving water temperature at
heating operation according to the speci
fi cations of
the fl oor heating installation.
■
In case of a fl oor cooling application, it is important to
limit the minimum leaving water temperature at
cooling operation (
fi eld setting of parameter [9-03]) to
16~18°C to prevent condensation on the fl oor.