Charging, Time And Temperature Limitations - andrews COMBIflo 100/300 Manual

Menu: DHW storage tank
Charging
Setting Once/day or Several times/day
is active only when the DHW release is
set in accordance with the heating
circuits' time programs.
Flow setpoint boost
The DHW request to the boiler is made
up of the current DHW setpoint plus the
adjustable charging boost.
Transfer boost
Heat transfer makes it possible to
transport energy from the buffer stora-
ge tank to the DHW storage tank. In
that case, the actual buffer storage tank
temperature must be higher than the
actual temperature of the DHW storage
tank. The temperature differential can
be set here.
Switching diff
If the DHW temperature is lower than
the current setpoint minus the switching
differential set here, DHW charging is
started. DHW charging is ended when
the temperature reaches the current
setpoint.
Charging time limitation
During DHW charging, space heating
may receive no heat or not enough
heat, depending on the selected char-
ging priority (operating line 1630) and
the hydraulic circuit. For this reason, it
is often practical to have a temporal
limitation of DHW charging.
Discharging protection
This function ensures that the DHW
charging pump (Q3) is activated only
when the heat source temperature is
high enough.
Charging temp max
Solar energy charges the DHW storage
tank up to the adjusted maximum DHW
charging level.
The protective collector overtemperatu-
re function can reactivate the collector
pump until the maximum storage tank
temperature is reached.
Recooling temp
If activated, the recooling function re-
mains in operation until the adjusted
recooling temperature in the DHW
storage tank is reached.
Andrews COMBIfl o
Line no. Operating line
5010 Charging
Once/day
Several times/day
5020 Flow setpoint boost
5021 Transfer boost
5022 Type of charging
Recharging
Full charging
Full charging legio
Full Charg 1st time day
Type of charging
The storage tank can be charged
using up to 2 sensors. It is also possi-
ble to combine partial charging with 1
sensor and the Legionella function
with 2 sensors (setting 3).
Line no. Operating line
5024 Switching diff
5030 Charging time limitation
5040 Discharging protection
Off
Always
Automatic
Application with sensor
The charging pump is activated only
when the heat source temperature lies
at a level half the charging boost above
the DHW temperature. When, during
the charging process, the boiler tempe-
rature drops to a level below the DHW
temperature plus 1/8 the charging
boost, the charging pump is deactiva-
ted again. If 2 DHW sensors are para-
meterized for DHW charging, the lower
temperature is considered for the
Discharging protection function (usually
B31).
Line no. Operating line
5050 Charging temp max
5055 Recooling temp
5056 Recooling heat gen/HCs
5057 Recooling collector
Off
Summer
Always
Recooling heat gen/HCs
Heating energy can be drawn off either
by space heating or the DHW storage
tank. This can be selected separately
for each heating circuit (operating page
heating circuit 1...).
27
Factory setting
Several times/day
16°C
8°C
recharging
Factory setting
5°C
60 min
Automatic
Application with thermostat
The charging pump is activated only
when the boiler temperature lies above
the nominal DHW setpoint. When, du-
ring the charging process, the boiler
temperature drops to a level below the
nominal DHW temperature setpoint
minus the DHW switching differential,
the charging pump is deactivated
again.
Factory setting
70°C
70°C
Off
Always
Recooling collector
If the collector is cold, the energy can
be emitted to the environment via the
collector's surfaces.
Controls programming guide