Hitecsa ADVANCE EQP1X Mode D'emploi page 35

I.4.3.2 Applications of the polyvalent system
The polyvalent ecological system has been designed to provide year-
round supply of hot and cold water to 2-pipe or 4-pipe systems, either
simultaneously or independently, depending on the selected operating
mode, AUTOMATIC or SELECT
2-pipe-systems
 Air conditioning and the production of hot water in a 2-pipe system
is a typical application in hotels, hospitals, gyms and hospitality
structures in general.
 When in
AUTOMATIC mode, it is used in the summer months for
cooling and the production of hot water.
 When in
SELECT mode, it is used in between seasons or in winter
for heating or the production of hot water based on the priority
assigned.
Summer months
Water for domestic
use
Hot water
Winter months "
Water for domestic use or air
conditioning
Hot water
4-pipe systems
 Increasingly frequently, modern HVAC installations require the
simultaneous production of hot and chilled water. This can occur more
often because of:
 The development of new types of thermal insulation for buildings;
 increase of internal loads (CED, WEB,...);
 lighting systems;
 the presence of large windows;
 the growing importance attributed to air quality, which requires the
use of conditioning systems year-round.
In these kinds of application, it can be used in
throughout the year, catering to simultaneous or separate hot and
chilled water demands in a completely automatic way
AUTOMATIC
" " mode for the entire year
Winter
Heating
Air conditioning
Hot water
Spring/Autumn
Cooling and heating
Air conditioning 1
Hot water
IOM_EQP1X_117a133_208094_200901_ES-EN-FR-DE-IT
.
≈AUTOMATIC∆
Water for domestic
use
Hot water
"
SELECT
AUTOMATIC mode
Winter
Heating
Air conditioning
Hot water
Air conditioning 1
Hot water
I.4.3.3 Example of water circuit
With external boiler (recovery)
Standard connection:
The recovery pump (installed by the installer) is
CR
on at all times. Recovery is activated on the basis
of the temperature of return water to the boiler.
Suggested connection:
T
The recovery and the recovery pump (installed by
the installer) are activated by the thermostat
CR
installed on the boiler.
N.B.:
The maximum temperature to which the thermostat can be set, and
hence the set point of the machine, must be set based on the
operating limits.
Attention:
Hot water for domestic use can be produced only by using an
additional heat exchanger which is suited to this purpose. Refer to
current local laws and regulations.
An adequate supply of water must be guaranteed to the recovery
circuit in order to prevent the compressor from switching on and
off frequently and poor performance due to the defrosting cycles.
To calculate the correct water content, please refer to page 53.
37
SECTION I: USER
T