3. PRESENTATION
Multipurpose
OUTDOOR
units for 2 or 4 pipe
systems, especially designed for simultaneous
production of
cold
and
hot
water and fully
independent.
AVAILABLE VERSIONS
3.1. FOR
2 PIPE SYSTEMS
The multipurpose 2-pipe units have been made
for applications with 2 pipe terminals, e.g. hotels,
where there is a cold/hot water and DHW demand
throughout the year.
The operating modes are:
SUMMER FUNCTIONING
1.
Cold water production to system.
2.
Production of domestic hot water with use of
total recovery
(NO ANTI-LEGIONELLA CYCLE).
WINTER FUNCTIONING
3.
Heat pump supplying the system.
4.
Service heat pump of DHW.
3.2. FOR
4 PIPE SYSTEMS
The multipurpose 4-pipe units have been made for
applications with 4 pipe terminals, e.g. shopping
centres, offices or facilities with large windows
where there can be the simultaneous demand for
hot and cold water with a system which does not
require season changeover and therefore is a valid
alternative to traditional systems based on the
chiller-boiler combination.
The microprocessor control logic ensures perfectly
satisfying heat and cooling loads.
The operating modes are:
PRODUCTION OF COOLED WATER ONLY
The multipurpose unit acts as a classical refrigerator:
cool water to the system and condensation heat
disposal outside through finned coils.
PRODUCTION OF HOT WATER ONLY
The multipurpose unit acts as a heat pump,
exploiting the heat of the outside air, through the
finned coil (evaporator) it raises the temperature of
the water to be sent to the system through a plate
heat exchanger (condenser). The main difference
from traditional cycle reverse heat pumps is that
the heated water is produced in different heat
exchanger from the one used to produce cold water.
This separates the two hot-cold sections required for
4-pipe systems.
COMBINED PRODUCTION
If the utility requires simultaneous hot and
cold water, the unit acts as a water heat pump,
controlling condensation and evaporation on
two distinct plate heat exchangers associated to
circulation of cold and hot water in the system.
It automatically changes from one configuration to
another (managed by on-board microprocessor)
to optimise the spent energy depending on the
demand by the utility.
Maximum reliability
Multi-circuit unit designed to provide the maximum
efficiency both with full load and partial loads,
guaranteeing operating continuity should one of the
circuits stop to facilitate maintenance.
Having several compressors and circuits ensures
control of more steps of power yielded in both
modes.
Built-in hydronic kit
Encloses the main hydraulic components; available
in several configurations with high or low static
pressure single pump or reserve pump (see
configurator).
4. CECK
LIST
KEY:
•
As standard
n.a.
Not avaiable
COOLING CIRCUIT
2-pipe unit
4-pipe unit
Thermostatic valve (cooling mode)
•
•
Thermostatic valve (recovery mode)
•
•
Cycle reverse valve
•
n.a.
Recovery enable valve
•
•
Heat exchanger plate (Evaporator)
n.a.
•
Heat exchanger plate (Evaporator/Condenser)
•
n.a.
Heat exchanger plate (DHW/Total Recovery)
•
•
Air side coil exchanger
•
•
Compressor
•
•
Dehydrator filter
•
•
COOLING CIRCUIT
2-pipe unit
4-pipe unit
High pressure switch (manually reset)
•
•
High pressure transducer
•
•
Low pressure transducer
•
•
Liquid indicator
•
•
Liquid tank
•
•
One-way valves
•
•
Liquid separator
•
•
Solenoid valves
•
•
Relief valves
•
•
System
2 pipe
System
4 pipe
System
DHW
Cooling side
Heating
side
STANDARD HYDRAULIC CIRCUIT ON ALL VERSIONS
Filter
Supplied
No
Supplied
No
Flow switch
As per standard
No
As per standard
No
VERSIONS WITH PUMPS ONLY (the more complete versions are described)
Filter
As per standard
As per standard
As per standard
As per standard
Pump/s
As per standard
As per standard
As per standard
As per standard
Drain valve
As per standard
As per standard
As per standard
As per standard
Air vent valve
As per standard
As per standard
As per standard
As per standard
Expansion vessels (2x25 l)
As per standard
As per standard
As per standard
As per standard
5
INRP260HzTY. 1312. 5806717_03
