System Description; Operating Principle - Ariston NIMBUS 40 M EXT Technical Instructions

SYSTEM DESCRIPTION

System composition
THE hybrid system is made up of:
- condensing boiler
- hybrid module
- external unit (air/water heat pump)
- tank (diagram with boiler system)
- a remote control device (Sensys)
- an external temperature sensor
- light gateway for connectivity
For further information on the accessories available,
please see the Product Catalogue.

Operating principle

NIMBUS HYBRID is a domestic hot water heating and
production system, made up of two generators:
- a condensing boiler,
- an air/water heat pump (HP) with external single block
inverter technology.
The two generators work in synergy thanks to an additional
module (HYBRID MODULE) that allows for hydraulic
integration of both generators with the heating system and
with the domestic hot water production system.
The HYBRID MODULE also contains the system
management electronics (ENERGY MANAGER), which
optimises its operation.
The HYBRID MODULE thus guarantees:
- excellent comfort,
- increased performance,
- easy installation,
- optimal operating costs
- reliability
- low investment costs.
The two generators can work together or separately
according to the operating mode selected:
- minimum primary energy consumption (default),
- minimum operating costs.
For this purpose, the ENERGY MANAGER electronic board
continuously monitors the temperatures in the heating
circuit: the outdoor temperature, the ambient temperature,
and the delivery temperature to the system.
From these values it deduces the boiler efficiency and the
heat pump COP.
In relation to the parameters initially set, the ENERGY
MANAGER decides which generator is the most suitable
to heat the room.
The hybrid system also offers the ability to define the limits
of operation of the boiler and the heat pump.
Heat pump minimum external operating temperature:
is the temperature below which the ENERGY MANAGER
prevents heat pump operation.
Boiler maximum external operating temperature:
is the temperature above which the ENERGY MANAGER
prevents boiler operation.
Within this temperature range, the ENERGY MANAGER
decides which generator is most convenient.
There are two installation solutions which differ in the
domestic hot water production system:
hybrid: hot water instantly produced exclusively from
combination type boilers
hybrid flex: hot water produced using a 180l tank, heated
by the heat pump and boiler according to the optimisation
logic described.
Cooling function
The hybrid system can also cool environments during
summer, as it mounts a reversible heat pump.
The function can be implemented by means of appropriate
plumbing kits, which can be used to create the intended
system schemes.
/ 59