This series of air-water heat pumps satisfies the winter and summer air conditioning needs of residential and commercial systems of small and medium power and allows

the production of domestic hot water (DHW) through an integrated boiler (up to 60 ° C with the heat pump only and up to 70 ° C with electric boiler heater accessory).

All the units are suitable for split installation (which avoids the risk of freezing in particularly rigid outdoor applications) and are capable of producing water up to 65 ° C and

can therefore be used in radiant systems, fan coil units, radiators.

The user interface consists of a digital controller mounted on the indoor unit, equipped with a large display and simple setting commands.

> INDOOR UNIT FEATURES

• DHW boiler in enamelled carbon steel (190 liters for mod. 4 - 6 - 8 - 10, 240 liters for mod. 12 - 14 - 16 - 12T - 14T - 16T), insulated with thick polyurethane foam,

complete with water drain tap and protected as standard with a 9 bar safety valve. Can be integrated with 1.5 kW electric heater (accessory)

• All the components (plate heat exchanger, circulator, etc.) and all the pipes of the hydraulic circuit are thermally insulated to avoid the formation of condensation and

reduce heat losses.

• Brazed stainless steel water / gas plate heat exchanger controlled and protected by temperature probes on both the water and refrigerant side

• Low consumption circulator with brushless DC motor

• Electric system heater (3 kW single stage for mod. 4 - 6 - 8 - 10 - 12 - 14 - 16, 6 kW single stage for mod. 12T - 14T - 16T)

• Water flow switch

• System expansion vessel of 10 liters

• 3-way diverter valve for DHW production

• Water system multifunction group (mechanical filter, magnetic ring and dirt separator) complete with automatic air vent, water pressure gauge and 3 bar safety valve

• System filling tap

> INDOOR UNIT ACCESSORIES

• CK - Hydraulic connections kit for an easy and quick installation

• AI - 18 liters system inertial tank complete with water drain valve and automatic air vent

• K2Z - 2 zone kit (direct and mixed) consisting of 2 circulators, mixing valve and mixed zone delivery temperature probe

• TBH - DHW boiler electric heater (1.5 kW single-stage for all models)

• VEACS - 8 liter DHW expansion tank

• KS - Pipes kit for thermal solar

• KPS - Kit pipes, circulators and plate heat exchanger for solar thermal

> OUTDOOR UNIT FEATURES

• Refrigerant circuit contained in a compartment sheltered from the air flow to facilitate maintenance operations

• Reduced inrush current thanks to Inverter technology

• Compressor with twin rotary DC INVERTER motor equipped with crankcase oil heater, positioned on anti-vibration rubber supports and wrapped in a double layer of

sound-absorbing material to minimize vibrations and noise

• DC inverter compressor that allows to modulate the capacity from 30 to 120% of the rated capacity

• Electronic biflow expansion valve

• Reverse cycle valve

• Axial fans with brushless DC motor complete with safety protection grilles

• Finned coil consisting of copper pipes and hydrophilic aluminium fins with anti-corrosion treatment

• The circuit is controlled by temperature probes and pressure transducers and protected by high and low pressure switches.

• All the units are equipped with variable speed control of the fans which allows operation with low external temperatures in cooling and high external temperatures in

heating.

• External air temperature probe already installed on the unit.

> OUTDOOR UNIT ACCESSORIES

• AVG - Rubber antivibration dampers.

> SYSTEM ACCESSORIES

TP - Temperature probe: this is a probe that can be used to expand the control functions of the unit.

In fact, it can be used for:

• management of a 2-zone kit (direct and mixed) external to the unit for reading the mixed zone flow

• solar thermal management for reading the temperature of the solar collector

•

Cod. 3541V991 - Rev. 00 - 09/2021

OMNIA ST 3.2