Worcester 6 KW Instruction Manual page 53

Worcester greenstore lecp ground source heat pump in either system or combi variants
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> Compressor working area (Compressor operating)
This defines a number of functions that make the compressor stop
temporarily or change operating mode to avoid more serious alarms.
>> Outdoor stop function activated
Factory setting
Alternative
Table 120 Outdoor temperature stop function
▶ Select Yes if the stop function should be active.
The compressor stops when the outdoor temperature falls below the
lowest permitted outdoor temperature for the compressor (-20 °C).
When the outdoor temperature rises to a value that is higher than the
lowest permitted temperature and this continues for 60 minutes
(factory value), the stop function is deactivated and the compressor
starts automatically if there is a demand.
The stop functions are always inactive at outdoor
temperatures higher than 10 °C (factory value, not
adjustable).
> Generated energy
This displays Generated energy in kWh divided into Heating and Hot
water.
> Operating times and consumptions
The total operating time for the control unit, heat pump x and additional
heat (active connection). It can also make short term measurements for
compressor and additional heat.
> Temperatures
All connected/acknowledged sensors present values. The set point
value is also given for some. The opportunity to correct the sensors is
also given.
Open circuits/short circuits/faults in sensors are indicated with a dash in
the
display and under Temperatures. Alarms are triggered and
stored in alarm log and alarm history.
T2 Out
T2 display, correction, Attenuation
Temperatures heat
T1 Start/stop limits compressor
pump x
T6,T8,T9,T10,T11 display, correction
T3 hot water start
T8 hot water stop
Circuit x
T1 set point
T1 display, correction
T5 display, correction, Attenuation
Room temperature set point value
Hot water
T3 display, correction
Extra hot water stop temperature
Hot water peak stop temperature
Table 121 Temperature display
Deviation of T6 hot gas temperature
Details regarding the hot gas temperature at T6 are also displayed if the
actual value has deviated during the last 24 hours from the calculated
ideal value. This enables the status of the refrigerant circuit to be
assessed without special tools.
Deviations in excess of -10 °C could be caused by the following:
1)
• Filter E2x.V101 obstructed
• Compressor run time too short
• Incorrect temperature indication from an internal sensor
• Expansion valve works incorrectly (too much open)
Deviations in excess of +10 °C could be caused by the following:
6 720 806 768 (2013/02)
No
Yes/No
1)
1)
2)
• Incorrect temperature indication from an internal sensor
• The expansion valve does not function as it should (too closed)
• Too little or too much refrigerant
• Contaminants, magnetite and/or limescale deposits in the condenser
2)
1)
Inspection and remedy possible by the installer.
2)
Visit by an authorised refrigeration engineer with suitable tools for the
inspection and remedy is required.
> Programmable outputs
F value
Alternative
Table 122 Programmable outputs
> Inputs
The status of all inputs is displayed here. Pressure switches and motor
cut-outs are shown for each heat pump. In addition, any alarms for
shunted additional heat, status for external inputs and protective anode
are shown.
Only connected inputs are displayed.
> Outputs
All components can be manually operated individually here to check
function.
>> Manual operation time
Factory setting
Lowest value
Highest value
Table 123 Manual operation time
▶ Set the number of minutes for manual operation.
Different vital components can be put into operation/turned off
separately.
On or Off, is displayed for each component.
Use the manual operation function on commissioning in
order to check if the installed components work.
Manual operation is possible for the following components (only the
ones that are installed are displayed):
>> G1 Heating circuit pump
>> Heat pump x
>>> Q21 Three-way valve (Heating/Hot water)
>>> G2 Heat carrier pump
>>> G2 Heat carrier pump speed
>>> G3 Collector circuit pump
>>> Compressor
>> Hot water electric heater
>> Hot water circulation pump
>> Circuit 2, 3...
>>> Circulation pump
>>> Mixing valve signal
>>> Mixing valve open
>>> Mixing valve close
>> Electric heater 1
>> Electric heater 2
>> Mixed additional heat
>>> Mixed additional heat
SETTINGS
1)
2)
2)
E41.G6
E41.G6/E11.P2
0min
0min
240min
53

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