Ariston NIMBUS EXTERNAL UNIT 04 kW Technical Instructions For Installation And Maintenance page 63

9.1.8 AUX 1 input confi guration
Confi gures the function of the input with the following values:
- 0. None
- 1. Humidity sensor (when IN AUX 1 is closed, the heat pump shuts down).
(disabled)
Press the OK button.
Turn the knob and select:
9.2 Energy rate settings
Press the OK button. Turn the knob and select:
9.2.0 Min. electricity/gas cost ratio
Defi nes minimum ratio allowed (0.5) between electrical kWh and gas unit
costs.
Press the OK button. Turn the knob and select:
9.2.1 Max. electricity/gas cost ratio
Defi nes maximum ratio allowed (4) between electrical kWh and gas units
costs.
Press the OK button. Turn the knob and select:
9.2.2 Primary energy/electricity ratio
Defi nes conversion factor between primary energy and electrical energy con-
sumed by the heat pump.
Press the OK button. Turn the knob and select:
9.2.3 Gas kWh cost (HHV)
Defi nes gas cost per kWh consumed
9.2.4 Electricity kWh cost
Defi nes consumed electrical energy kWh cost
9.2.5 Reduced tariff electricity kWh cost
Defi nes consumed electrical energy kWh cost during low-rate period.
Press the OK button. Turn the knob and select:
9.2.6 External Boiler Effi ciency (disabled)
Defi nes estimated average yield of boiler AUX 1/2
Press the OK button. Turn the knob and select:
9.3 Heating - 1
Press the OK button. Turn the knob and select:
9.5 Domestic water
Press the OK button. Turn the knob and select:
9.5.2 Tank Setpoint Delta Temperature
Defi nes storage cylinder setpoint temperature increment corresponding to
hot water comfort temperature (paragraph 9.5.0)
Press the OK button. Turn the knob and select:
9.5.3 Comfort function
Confi gures the domestic hot water production mode as follows:
- Disabled
- Timer (starts the comfort function for periods which can be set with the
domestic water production schedule programming feature)
- Always enabled
9.5.4 Storage cylinder fi lling mode
Press the OK button. Turn the knob and select:
- 0. Standard
- 1. Heat pump only
- 2. Fast
Press the OK button. Turn the knob and select:
9.5 5 Thermal Sanitation function
This function allows Legionella bacteria proliferation reduction inside the stor-
age cylinder. When enabled, the function is carried out every 24 hours. The
storage cylinder will be kept at 60°C for one hour. If this temperature cannot
be reached within 6 hours, error 2P2 "Sanitation function not completed".
Press the OK button. Turn the knob and select:
- ON (enables the function)
- OFF (disables the function)
Turn the knob and select:
9.6 Manual mode - 1
Allows manual activation of the hydraulic module components.
Turn the knob and select:
9.7 Checking cycles
Press the OK button. Turn the knob and select:
9.7.0 Deaeration cycle
Activates the system deaeration cycle. The cycle lasts for 10 minutes.
Press the OK button. Turn the knob and select:
9.7.1 Screed drying cycle
Defi nes the screed drying programme for under-fl oor systems using the fol-
lowing values:
- 0. OFF
- 1. Functional (screed heating at a fi xed temperature of 55°C for a 6 day
period)
60
55
50
45
40
35
30
25
20
15
0 1 2 3
Period (days)
- 2. Ready to use (screed heating at a variable temperature from 25°C to
55°C for the duration shown in the graph for an 18 day period)
60
55
50
45
40
35
30
25
20
15
0 2 4 6
Period (days)
- 3. Functional + Ready to use (screed heating at a fi xed temperature of
55°C for a 6 day period, at a variable temperature from 25°C to 55°C for
the duration shown in the graph in the following 18 days)
60
55
50
45
40
35
30
25
20
15
0 5 10
- 4. Ready to use + Functional (screed heating at a variable temperature
from 25°C to 55°C for the duration shown in the graph, for an 18 day
period, at a fi xed temperature of 55°C in the following 6 days)
4 5 6 7 8 9
8 10 12 14 16 18
15 20 25
Period (days)
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10
20
30