Atlantic AEYC-0639U-AT, Installation Manual

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Operating principle
The hydraulic unit has a regulator that controls the
indoor temperature based on the measurement of the
outdoor temperature, known as weather-dependent
control. The room thermostat (optional) corrects the
weather-dependent setpoint.
The hydraulic unit may be equipped with an electrical
back-up system*, which is designed to provide additional
heat during the coldest periods.
■ Regulation functions
-The initial temperature of the heating circuit is
controlled by the weather-dependent setpoint.
-The power of the heat pump is modulated according to
flow heating temperature via the "inverter" compressor.
-Control of the electrical back-up*.
-
The daily timer programme enables you to define
the periods for comfortable or reduced ambient
temperature.
-Switching between summer/winter operation is
automatic.
-Room thermostat*: The room thermostat corrects the
weather-dependent setpoint.
-Domestic hot water* Heating time program, control of
the operation of the DHW circulation pump.
-Managing the cooling.
■ Fan coil units with integrated regulation
Do not use a room thermostat in the zone concerned.
■ Protection functions
-Legionella cycle for domestic hot water.
-Frost protection: Frost protection cuts in if the low-
temperature point of the heating circuit falls below 5 °C.
■ Domestic hot water (DHW) operating principle*
Two domestic hot water (DHW) temperatures may
be set: comfort temperature (line 1610 at 55 °C)
and reduced temperature (line 1612 at 40 °C).
The DHW programme (line 560, 561 and 562) is set by
default to a comfort temperature from 0:00 to 5:00 and
from 14:30 to 17:00 and a reduced temperature for the
rest of the day, which optimises electricity consumption
while ensuring comfortable levels of hot water and
heating.
Setting for reduced temperature can be useful to prevent
the DHW from switching on too often and for too long
during the day.
The production of domestic hot water (DHW) is triggered
when the temperature in the tank falls 7 °C below the
temperature setpoint.
The heat pump produces domestic hot water (DHW),
which is then heated further, if required, by the electrical
back-up system inside the tank.
To ensure a DHW setting over 45 °C, the electrical
back-up heating must be left on.
Depending on how the parameter (1620) is set, nominal
temperature can be reached 24h/day or only at night or
depending on the heat pump program.
If the contract concluded with the energy provider
includes a subscription to day/night tariff, the electrical
back-up is subordinate to the supplier's power tariff and
the comfort temperature may only be reached at night.
If no particular contract is concluded, the comfort
temperature can be reached at any time, including
during the day
DHW production takes priority over heating;
nevertheless the production of DHW is controlled by
cycles that control the times assigned to the heating
and the production of DHW in the event of simultaneous
demand.
A switching function of "reduced" to "comfort" is available
on the front panel of the user interface (see item fig. 27,
page 30
).
Legionella cycles can be programmed.
*: These options require the use of additional kits (see §
“Optional equipment”, page 6
).
Aurea M / Installation / 1883 - EN