CHAFFOTEAUX AQUANEXT PLUS 200 Instructions D'utilisation page 82

P7 parameter – Operation with two-tier electricity rate
To be able to operate also on appliances with a two-tier rate system, the control logic calculates the number of
average hours a day during which the power supply is available in the economy mode (HC). For activating this
function turn on P7 parameter.
A self-learning function ensures that the appliance reaches the pre-set temperature in the time range during which the
economy rate applies; the maximum limit of hours is determined by the P14 TIME_W parameter; after the initial start-
up (or after switching off the hardware), the default setting is 8 hours. In order to optimize the self-learning function it is
advisable to set AUTO mode.
P8 parameter (for details see paragraph 7.4)
The P8 parameter allows you to manage the product's different operating modes. It can have values of 0, 1, 2, 3.
STANDARD (value 0 - default): only the GREEN, BOOST, VOYAGE (if enabled with P3) and PROGRAM (if enabled
with P4) modes can be selected with the "mode" button; the integration is by the electric heating element that operates
according to the mode selected.
HE_ON (value 1): the GREEN, AUTO, BOOST, BOOST2, VOYAGE (if enabled with P3) and PROGRAM (if enabled
with P4) modes, i.e. all available modes, can be selected with the "mode" button; the integration is by the electric
heating element that operates according to the mode selected.
COMBI (value 2): only the GREEN, VOYAGE (if enabled with P3) and PROGRAM (if enabled with P4) modes can be
selected with the "mode" button. Integration to the heat pump is not provided; the electric heating element always
operates in the event of anti-Legionella and antifreeze. It is advised to perform a pre-heating of inlet water to combi
boiler made by the heat pump (see fig. 16).
SYSTEM (value 3): the GREEN, AUTO, BOOST, BOOST2, VOYAGE (if enabled with P3) and PROGRAM (if enabled
with P4) modes, all available modes can be selected with the "mode" button; the integration is by the external auxiliary
heat generator where it is correctly connected both hydraulically (see fig. 15 – B or C) and electronically (see
paragraph 4.5 and fig. 12) to the product. It is advised when it is available auxiliary heat generator which is able to
replace the electrical resistance for integration function (only for SYS models).
P9 parameter - Photovoltaic function
If you have a photovoltaic system, you can set the product to optimise use of the electricity
produced. After having done the electrical connections as described in paragraph 4.5 fig. 12
and set the P9 parameter to other than 0, when the SIG2 signal is detected, the current
operating mode is automatically modified as follows:
STANDARD (value 0 - default): the operating mode of the previously described procedures is
not modified.
PV GREEN (value 1): the PV icon is displayed (see figure to the side). When the signal from the inverter is present,
the name of the selected mode alternates with the text PV GREEN. The product will reach the set temperature (the
most between T SET POINT and T W PV), with only the heat pump (max 62°C).
PV HE (value 2): the PV icon is displayed (see figure to the side). When the signal from the inverter is present, the
name of the selected mode alternates with the text PV HE. The product will reach the set temperature (the highest
between T SET POINT and T W PV), operating with only the heat pump up to 62°C and subsequently with the
heating element (1500 W).
PV BOOST (value 3): the PV icon is displayed (see figure to the side). When the signal from the inverter is present,
the name of the selected mode alternates with the text PV BOOST. The product will reach the set temperature (the
highest between T SET POINT and T W PV), operating both with only the heat pump and the heating element (1000
W) up to 62°C and subsequently with only the heating element (1500 W).
There must be the SIG2 signal for at least 5 minutes to enable the photovoltaic function (once the product starts a
cycle, it will operate for at least 30 minutes).
If parameter P18 is active, function P18 is automatically deactivated when the photovoltaic function is activated.
P18 parameter - SG function
If you have an SG signal, you can connect the signal cable as described in chapter 4.5 fig. 12
and when the P18 function is enabled the SG icon will be displayed. Once you have received
the SIG2 signal for at least 5 minutes (once the product starts a cycle, it will operate for at least
30 minutes), the name of the selected mode alternates with the text SG ON and the current
operating mode is automatically modified by thermostating the product to the temperature set
(the highest between T SET POINT and T W PV), operating with only the heat pump (max 62°C).
If parameter P9 is active, function P9 is automatically deactivated when the SG function is activated.
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