Technologies INTEGRA units for 4-pipe systems

INTEGRA multi-use units: the most evolved solution for 4-pipe systems

INTEGRA units for 4-pipe systems, air and water source, with scroll, screw and inverter screw compressors, from 33 to 1125 Kw, for simultaneous hot and cold water production: the zero-compromise solution in terms of comfort and system efficiency.

Maximum energy efficiency

The construction approach that characterizes Climaveneta multi-use units has been designed to maximize their usefulness. The maximum efficiency of the system is reached with simultaneous loads, the energy produced is used to satisfy the hot and cold demands of the total system. In modern buildings with opposite overlapping thermal loads, the INTEGRA units are the greenest and most efficient solution compared to any other.

Self-adaptability with simultaneous loads

Thanks to their advanced control logic, multi-use units are always able to respond to building climate control requirements, especially if overlapping loads occur. The unit can independently produce cooling and heating simultaneously, according the actual needs.

System simplification

The use of a unit that independently produces both heating and cooling eliminates the need for separate heating and cooling resources. This significantly simplifies the system: plant areas are reduced, hydronic circuits are simplified, maintenance is reduced by half, and control is rationalized.

Reduction of on-site operations

A simplified system results in a significant reduction in the operations to be carried out on site. In fact, it is no longer necessary to connect it to the gas network, install and commission auxiliary boilers, or manage areas to be used for conventional heating units. This means substantial savings in terms of time and cost for the client.
INTEGRA units can produce hot and chilled water at the same time and totally independently, adapting to the variable heating and cooling demands of the building.
Climaveneta has introduced a new efficiency index, called Total Efficiency Ratio (TER).
In all cases in which INTEGRA simultaneously produces cold and hot water, the real efficiency of the unit is the sum of the performance in hot and cold water production.
Using traditional ratings such as EER and COP to measure efficiency of 4-pipe units would be limiting. To objectively measure performance under simultaneous load conditions, the Climaveneta brand, a pioneer in the development of this technology, has conceived of TER – total efficiency ratio. The TER is calculated as the ratio between the sum of the delivered heating and cooling power and electrical power input.
Considered today the most effective way of representing the real efficiency of the unit, the TER reaches its maximum value when the loads are completely balanced.
For chillers the energy efficiency ratio is EER and for heat pumps COP. Basically TER is the combination of the COP and EER in one single index. In the case of the simultaneous, balanced demand of heating and cooling these units can achieve efficiency corresponding to TER values between 7 and 8. The superior efficiency is evident considering that 3,2 is the EER for class A chillers.
The inverter technology with continuous variable speed shows its advantages particularly when applied to multi-purpose units.
The inverter technology with continuous variable speed shows its advantages particularly when applied to multi-purpose units. The new inverter driven i-FX-Q2 and i-NX-Q always reach higher efficiencies than fixed speed units, with any combination of cold / hot load, and in any season.
The presence of Variable Speed Drive (VSD) compressors allows the INTEGRA unit, i-FX-Q2 and i-NX-Q to effectively follow each combination of thermal loads required by the system, with increasingly higher TER efficiencies (up to 19%) compared to those units with fixed speed compressors.

Unbeatable efficiency at partial loads

In traditional comfort applications the HVAC plant usually works at full load only for few hours every year. Most of the time the unit works at partial loads. It is in this situation that the efficiency achieved by the units with inverter technology is much higher than traditional fixed speed units: SCOP up to +20% SEER up to +32% The minimum efficiency requirements of the EU regulation, ErP 2009/125 / EC, are also pinpointed in TIER 2021.

Minimum sound emissions. Highest acoustical comfort

The more you increase the partialisation the lower your sound emissions will be, thanks to capacity of inverter technology to continually modulate the compressor rotation. For most of the year VSD units will therefore produce lower sound emissions compared to fixed speed units, always ensuring the highest acoustical comfort. The sound emissions can be further reduced thanks to dedicated versions and a vast array of accessories.

No in-rush current

The inverter technology involves a start-up phase with negligible in-rush current, lower than any other starting mode (direct start, star / delta, part winding or soft start). The absence of sudden peaks and abrupt changes in the starting torque, in addition to eliminating possible disturbances to the electricity power network, reduces the stress on the electrical components to zero, and improves the reliability of the system. The frequency converters are characterized by values of Displacement Power Factor of between 0.97 and 0.99.The resulting power factor of the unit at rated nominal operating conditions is always higher than that of similar fixed speed unit. The need to install power factor correction devices of the loads is therefore reduced.

Flexibility in selecting units

Thanks to specific technical solutions and proprietary control functions, Climaveneta’s inverter units can be selected at various speed conditions, different from the nominal ones. Whatever the needs to be met: maximum operating efficiency, reducing the initial investment, future power increase of the plant, it is always possible to identify the most suitable unit.

an integrated module for the independent production of very high water temperature (up to 78 ° C). From 70 to 279 kW
+2P it is the innovative solution for the production of very high water temperature (up to 78 °C). Designed as a fully integrated module, +2P is installed inside the main and grants efficiencies without compromise.
The multipurpose heat pump with integrated +2P module is therefore able to satisfy, independently and simultaneously, 3 different thermal requirements at 3 different temperatures, without limiting operational flexibility.
Thanks to +2P, other supplementary sources will no longer be necessary for the production of high temperature water.
The INTEGRA +2P solution is ideal in all cases where there is the need to fulfill independently and simultaneously 3 thermal loads (cold, warm, and hot water)