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Verfügbare Sprachen
Verfügbare Sprachen
• KPE1-KPE2- VACS controls management
To manage the evaporator pump controls with consent in voltage 230Vac (KPE1-KPE2) and domestic hot water diverter valve control with consent in volt-
age 230Vac and maximum load 0.5A AC1, following the indications in the wiring diagram supplied with the unit.
Remote management using accessories supplied loose
It is possible to remote control the entire machine by linking a second keyboard to the one built into the machine (KTR accessory). Use and installation of
the remote control systems are described in the Instruction Sheets provided with the same.
2.8. WATER CONNECTIONS
IMPORTANT!
The layout of the water system and connection of the system to the unit must be carried out in conformity with local and national rules
in force.
IMPORTANT!
It is advisable to install shut-off valves that isolate the unit from the rest of the system. Mesh filters with a square section (longest side
= 0,8 mm), of a suitable size and pressure drop for the system, must be installed. Clean the filter from time to time.
o The unit is designed for outdoor installation.
o The unit is provided with Victaulic type hydraulic connections on the water inlet and outlet of the air conditioning system.
o The unit should be positioned to comply with the minimum recommended clearances, bearing in mind the access to water and electrical connections.
o The unit can be equipped with anti-vibration mounts upon request (SAG).
o Shut-off valves must be installed that isolate the unit from the rest of the system. Elastic connection joints and system/machine drain taps also need to be
fitted.
o The water flow through the heat exchanger must respect the MAXIMUM/MINIMUM values indicated in the "Operating limits" section.
o Correct installation and positioning includes levelling the unit on a surface capable of bearing its weight.
o During long periods of inactivity, it is advisable to drain the water from the system.
o It is possible to avoid draining the water by adding ethylene glycol to the water circuit (see "Use of antifreeze solutions").
o The size of the expansion tank must be calculated by the installer depending on the system.
o In the case of models without a pump, the pump must be installed with a flow towards the machine water inlet.
o It is advisable to install an air bleed valve.
o Once the connections to the unit are made, check that none of the pipes leak, and bleed the air from the system.
o Open expansion tanks must be installed outside. Inside use hermetic expansion tanks.
o In case of breakage, the evaporator of the unit could release refrigerant into the hydraulic circuit. The installer is in charge of designing and protecting the
hydraulic circuit by a safety valve located distant from possible triggering sources.
The circulation pump to be installed in the main water circuit should be selected to overcome any pressure drops, at nominal rates of water flow, both in the
exchanger and in the entire water system. The user pump operation must be subordinated to the machine operation; the microprocessor controller runs the
control and management of the pump according to the following logic: upon the machine ignition command, the first device to start in the system is the
pump, which has priority over the rest of the system. During the start-up phase, the minimum water flow differential pressure switch fitted on the unit is tem-
porarily excluded, for a preset period, in order to avoid oscillations caused by air bubbles or turbulence in the water circuit. After this time, the definitive
consent to start the machine is given. The pump keeps on working all the time the unit is in operation, and it shuts down only at the switch-off command.
After switch-off, the pump will continue to operate for a pre-set time before finally stopping, in order to disperse the residual heat in the water exchanger.
See also the attachment section "Hydraulic circuits".
Minimum hydraulic circuit contents
To ensure the unit works correctly, the system needs a minimum volume of water
The minimum water content is determined on the basis of the unit's cooling in the design of the unit, multiplied by the coefficient expressed in 3 l/kW (*).
If the water content of the system is below the minimum value calculated, install an additional tank.
However, remember that a high water content in the system always goes to the advantage of comfort in the room, as it ensures a high thermal inertia of the
system.
* For heat pumps/air cooled, also pay attention to the temperature difference generated during the natural defrosting cycles:
DT tank and/or DHW (by defrost effect)
Specific capacity
H5xxxxx
65
K
20
15
12
l/kW 3.5
5
6
EasyPACK ECO - Nias
10
8
7
7
9
10
6
12
65
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