Electrical Connections; Instructions For Start-Up; Configuration - Hitecsa 117 Manual De Instalación, Uso Y Mantenimiento

The multipliers refer to the following conditions: condenser inlet air
temperature 35°C; chilled water temperature 7°C; temperature
differential at evaporator 5°C. For different functioning conditions, the
same coefficients can be used as their variations are negligible.
Table "H"
Design air temp.
2 0
in °C
% glycol in
10 15
weight
Freezing temp.
-5 -7
°C
fc G 1,025 1,039 1,054 1,072 1,093 1,116 1,140
fc Opw 1,085 1,128 1,191 1,255 1,319 1,383 1,468
fc QF 0,975 0,967 0,963 0,956 0,948 0,944 0,937
fc P 0,993 0,991 0,990 0,988 0,986 0,983 0,981
fc G = Correction factor of the glycol water flow to the evaporator.
fc Opw = Correction factor of the pressure drops in the evaporator.
fc QF = Cooling capacity correction factor.
fc P = Correction factor for the absorbed electrical current.
II.7

ELECTRICAL CONNECTIONS

DANGER!
Install a general automatic switch with
characteristic delayed curve, of adequate capacity
and interruption power, in a protected area near the
unit (the device must be able to interrupt the
presumed short circuit current, whose value should
be determined on the basis of the system
characteristics). Earth connection is compulsory by
law to ensure user safety while the machine is in
use.
DANGER!
The electrical connection of the unit must be
carried out by qualified personnel, in compliance
with the regulations applicable in the country where
the unit is installed. Non-conforming electrical
connections releases HITECSA from liability
concerning damage to objects and persons.
In making the electrical connections to the board,
cables must be routed so that they do not touch the
hot parts of the machine (compressor, flow pipe
and liquid line). Protect the wires from any burrs.
DANGER!
Check the tightness of the screws that secure the
conductors to the electrical components on the
board (vibrations during handling and transport
could have caused them to come loose).
IMPORTANT!
For the electrical connections of the unit and
accessories, refer to the relative wiring diagram.
The safety door interlock automatically prevents electric power being
fed to the unit if the cover panel over the electrical panel is opened.
After opening the front panel of the unit, feed the power supply cables
through the cable clamps in the external panelling and then through the
ducts at the base of the electric board.
The electrical power supplied by the single-phase or three-phase line,
must be taken to the main isolator switch. The power supply cable must
be flexible with a polychloroprene sheath not lighter than H05RN-F: for
the section, refer to the following table or wiring diagram.
Cable section
Line Section
PE section
Sectioncontrolsand remote controls
IOM_EQUI PF-EQUHI PF_117a128_207983_200101_ES-EN-FR-DE-IT
-3 -6 -10 -15 -20
20 25 30 35 40
-10 -13 -16 -20 -25
117 124 128
mm² 6 10 10
mm² 6 10 10
mm² 1,5 1,5 1,5
The earth conductor must be longer than the other conductors in order
to ensure that if the cable fastening device should become loose, it will
be the last to be stretched.
II.7.1.1 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). To select
the remote control system, consult paragraph II.3. Use and installation
of the remote control systems are described in the Instruction Sheets
provided with the same.
II.8

INSTRUCTIONS FOR START-UP

IMPORTANT!
Machine commissioning or the first start up (where
provided for) must be carried out by skilled
personnel from workshops authorised by
HITECSA, qualified to work on this type of
products.
IMPORTANT!
The use and maintenance manuals for the pumps,
fans and safety valves are attached to this manual
and should be read throughout.
DANGER!
Before starting up, make sure that the installation
and electrical connections conform with the
instructions in the wiring diagram. Also make sure
that there are no unauthorised persons in the
vicinity of the machine during the above operations.
DANGER!
The units are equipped with safety valves located
inside the technical compartment. When they cut in,
they cause a loud noise and violent refrigerant and
oil leaks. Do not approach the safety valve tripping
pressure value.
II.8.1

CONFIGURATION

Safety component calibration settings EQUI PF-EQUHI PF 117÷128
Pressure switch
high pressure
Pressure transducer
water differential
Configuration parameters
Summer working temperature set point
Winter working temperature set point (EQUHI PF)
Work temperature differential
Antifreeze temperature set point
Antifreeze temperature differential
Press. exclusion time of low pressure at start-up
Press. exclusion time water differential upon start-up
Circulation pump switch off time delay
Minimum time between 2 consecutive compressor start-ups
The units are tested in the factory, where they are also calibrated and
the default parameter settings are put in. These guarantee that the
appliances run correctly in rated working conditions. The machine
configuration is carried out in the factory and should never be altered.
II.8.1.1 KEAP accessory - remote controlled
outdoor air probe
For correct shifting temperature adjustment of water coming out of the
heat pump, it is important that the air temperature has a significant
value and is not influenced by the incorrect position of the sensor/unit."
The unit is equipped with an outdoor air temperature sensor located
next to the fin-packed heat exchanger.
35
Intervention Reset
42 Bar 33 Bar - Manual
3,3 Bar – Automatic
2 Bar
80 mbar 105 mbar - Automatic
Standard settings
7°C
45°C
2 °C
2,5 °C
2 °C
120"
15"
15"
360"