Section Ii :: Installation And Maintenance; Description Of The Unit; Structural Features Ewmim Cooling Only-Ewmimh Heat Pump 120÷130; Structural Features Ewmim Cooling Only-Ewmimh Heat Pump 138÷262 - Hitecsa EWMIM Serie Manual De Instalación, Uso Y Mantenimiento

II SECTION II :: INSTALLATION AND
MAINTENANCE
Pursuant to Regulation (EU) No. 517/2014 of 2014 April 16, operators
of equipment which is required to be checked for leaks pursuant to
Article 4(1), shall establish and maintain records for each piece of such
equipment specifying the information set forth in article 6 par. 1.
The operator is the owner of the equipment or the system. The operator
may formally delegate a person or external company (through a written
contract) the actual control of the equipment and the system.
II.1

DESCRIPTION OF THE UNIT

II.1.1 STRUCTURAL FEATURES EWMIM
COOLING ONLY-EWMIMH HEAT PUMP
120÷130
○ Load-bearing structure and panelling in galvanised and RAL 9018
painted sheet steel; base in galvanised sheet steel.
○ Scroll type rotary hermetic compressor with inverter activation to
control variable capacity with peak current reduction during the start-up
phase and power factor correction of the automatic utility towards the
mains. They include thermal protection and casing heater activated
automatically when the unit stops (as long as still electrically powered).
○ Adequately insulated, braze-welded plate water side heat exchange
in stainless steel complete with anti-freeze heater.
○ Air side heat exchanger featuring finned coil with copper pipes and
aluminium fins, with hydrophilic surface treatment (for EWMIMH heat
pump). Air side exchanger composed of coil with copper pipes and
aluminium fins (for EWMIM cooling only).
○ Condensate drain tray with ducted drain under the coil for
EWMIMH heat pump units only supplied with electrical heating
resistance that runs in winter mode and is activated according to the
outdoor temperature.
○ Electric helical fans with external rotor, supplied with internal circuit
breaker protection and complete with protection mesh.
○ Proportional electronic device for pressure regulation and continuous
regulation of the rotation speed of the fans.
○ Male threaded hydraulic connections.
○ Water heat exchanger differential pressure switch that protects the
unit from any water flow interruptions.
○ Outdoor air temperature probe.
○ Cooling circuit made with annealed copper pipe (EN 12735-1-2)
complete with:
•
dryer filter, load connections, high pressure side pressure switch,
pressure transducer on both the high and low pressure sides, gas
separator, electronic thermostatic expansion valve, cycle inversion
valve (for EWMIMH heat pump only), liquid receiver (for EWMIM heat
pump only) and check valve (for EWMIMH heat pump only).
○ Unit with IP24 protection rating.
○ Control with AdaptiveFunction Plus operation.
○ The unit is complete with a charge of R410A refrigerant.
II.1.2 STRUCTURAL FEATURES EWMIM
COOLING ONLY-EWMIMH HEAT PUMP
138÷262
○ Load-bearing structure and panelling in galvanised and RAL 9018
painted sheet steel; base in galvanised sheet steel.
○ Scroll type rotary hermetic compressor with inverter activation to
control variable capacity with peak current reduction during the start-up
phase and power factor correction of the automatic utility towards the
mains. They include thermal protection and casing heater activated
automatically when the unit stops (as long as still electrically powered)
(for EWMIM cooling only-EWMIMH heat pump 138÷154).
○ Hermetic scroll type rotary compressors. The first compressor with
inverter drive, the second one coupled in tandem at a fixed speed for
control of the variable capacity with reduction of the inrush current
during start-up and power factor correction of the automatic utility
towards the mains. They include thermal protection and casing heater
activated automatically when the unit stops (as long as still electrically
powered) (for EWMIM cooling only-EWMIMH heat pump 262).
○ Adequately insulated, braze-welded plate water side heat exchange
in stainless steel complete with anti-freeze heater.
IOM_EWMIM-EWMIMH_120a262_207984_200601_ES-EN-FR-DE-IT
○ Air side exchanger composed of coil with copper pipes and
aluminium fins. Complete with protection grilles.
○ Electric helical fans with external rotor, supplied with internal circuit
breaker protection and complete with protection mesh.
○ Proportional electronic device for pressure regulation and continuous
regulation of the rotation speed of the fans.
○ Male threaded hydraulic connections.
○ Water heat exchanger differential pressure switch that protects the
unit from any water flow interruptions.
○ Outdoor air temperature probe.
○ Cooling circuit made with annealed copper pipe (EN 12735-1-2)
complete with:
•
dryer filter, load connections, high pressure side pressure switch,
pressure transducer on both the high and low pressure sides, gas
separator, electronic thermostatic expansion valve, cycle inversion
valve (for EWMIMH heat pump only), liquid receiver (for EWMIMH heat
pump only) and check valve (for EWMIMH heat pump only).
○ Unit with IP24 protection rating.
○ Control with AdaptiveFunction Plus operation.
○ The unit is complete with a charge of R410A refrigerant.
II.2

ELECTRICAL CONTROL BOARD

○ The electrical panel can be accessed by opening the front panel, in
compliance with IEC Standards in force; it can be opened and closed
using specific tools. It features a thermostat-controlled cooling fan
(138÷262).
○ Complete with:
•
electrical wiring arranged for power supply 400-3ph+N-50Hz;
•
auxiliary circuit power supply 230V-1ph-50Hz derived from main
power supply;
•
main power supply switch with interlocking safety door isolator;
•
inverter compressor protection fuses;
•
circuit breaker to protect the fixed speed compressor (262);
•
auxiliary circuit protection fuse;
•
commands and remote machine controls: remote on / off (SCR),
remote summer / winter (SEI), auxiliary generator command CGA
(boiler) or alternatively KRIT additional generator command, unit forced
discharge (FDL), lock lamp (LBG) and compressor operating lamps
(LFC);
•
remote machine commands and controls.
○ Programmable electronic board with microprocessor, controlled by
the keyboard inserted in the machine or using the remote keyboard
(KTR) up to 50 metres; use the KR200 kit for distances greater than 50
m up to 200 m.
○ This electronic board performs the following functions:
•
adjusts and controls the temperature settings of the water exiting
the machine; of cycle inversion; safety delays; of the circulation pump;
of the compressor operating hour meter and the system pump hour
meter; of the electronic antifreeze protection that is automatically
activated when the machine is off; of the functions that control the
intervention mode of the individual parts forming the machine;
•
complete protection of the unit, possible shutdown and display of
all the triggered alarms;
•
total compressor and inverter protection by means of continuously
monitoring the current absorbed by the compressor and operating
pressures. The compressor can modulate automatically, regardless of
the request if it goes out of its proper field of operation.
•
multi-language display management (Italian, English, French,
German, Spanish);
•
electronic expansion valve management (EEV);
•
management of compressor discharge temperature and inlet and
flow pressures;
•
display of the settings implemented on the display; of the in/out
water temperature on the display; of the alarms on the display; of
operation of the chiller or heat pump by means of led;
•
self-diagnosis with continual checking of the machine oeprational
status;
•
user interface menu;
•
alarm code and description;
•
Management of alarms log.
53
ADVANCE