Wolf CGB-2-24 - Page 45

3064810_201804 45
24.Parameterdescription
Cylinder heating commences as soon as the cylinder temperature sensor
demands heat. The heating circuit pumps would be constantly switched off if
the appliance were undersized, the cylinder were scaled up or if DHW were
constantly drawn off during DHW priority mode. The accommodation would then
cooldownsignicantly.Tolimitthiseffect,itispossibletospecifyamaximum
cylinder heating time.
If the set maximum cylinder heating time has expired, fault message 52 appears
on the programming or display module.
The control unit reverts to heating mode and cycles in the selected rhythm
(HG20) between heating and cylinder heating mode, irrespective of whether
the cylinder has reached its set temperature or not.
The "Max. cyl. heat time" function remains active even if parallel pump operation
is enabled. If HG20 is set to OFF, the "Max. cyl. heat time" function is disabled.
Set this parameter to OFF in heating systems with high DHW consumption,
e.g. hotels, sports facilities, etc.
Parameter HG20
Max. cylinder heating time
Factory setting: see table
Setting range: OFF/30 to 180 min
Individualsetting:_____
The control unit is equipped with an electronic boiler thermostat which has an
adjustable maximum shutdown temperature (maximum boiler water temper-
ature). The burner is switched off if this temperature is exceeded. The burner
will restart when the boiler water temperature has fallen by as much as the
burner switching differential.
Parameter HG22
Maximum boiler temperature TK-max
Factory setting: see table
Setting range: 50 to 90 °C
Individualsetting:_____
The control unit is equipped with an electronic boiler thermostat which has an
adjustable minimum start temperature. The burner is switched on subject to
the cycle block if this temperature is not achieved when heat is demanded. If
there is no heat demand, the minimum boiler water temperature TK-min. may
be undershot.
Parameter HG21
Minimum boiler temperature TK-min
Factory setting: see table
Setting range: 20 to 90 °C
Individualsetting:_____
The excess temperature differential between the cylinder temperature and the
boiler water temperature during cylinder heating is selected with parameter
HG25.
The boiler water temperature continues to be limited by the maximum boiler
water temperature (parameter HG22). This ensures that, even in spring and
autumn, the boiler water temperature is higher than the cylinder temperature,
thereby ensuring short heating times.
Parameter HG25
Excess boiler temp.
for cylinder heating
Factory setting: see table
Setting range: 1 to 30 °C
Individualsetting:_____
The DHW temperature is factory-set to 65 °C. If, for commercial reasons, a
higher DHW temperature is required, a maximum of up to 90 °C can be enabled.
If pasteurisation has been enabled, the DHW cylinder will be heated to 65 °C
duringtherstcylinderheatingoftheday,subjecttoparameterHG23being
set to this temperature or higher.
Pleasenote:
Take adequate measures to prevent scalding.
Parameter HG23
Maximum DHW temperature
Factory setting: see table
Setting range: 50 to 90 °C
Individualsetting:_____