Daikin EWAQ~G-SS - Pre-Start Up Checks; Isolation and Shut-off Valves; Operation, Maintenance, and Guarantees; User Responsibilities

D-EIMAC01207-15EN - 14/22
Checks to be performed before starting
the unit
 1
Check for exterior damage
 2
Open all the closing valves
 3
Make sure that all the parts of the unit are
pressurised with refrigerant (evaporator,
air condenser , compressors) before
connecting it to the hydraulic circuit.
 4
Upstream of the unit, install a main
switch, main fuses and, where required
by legislative requirements in the country
of installation, an earth leakage detector.
To select these components, consult the
information on the unit ID plate and the
relative technical catalogue.
 5
Connect the main voltage and check that it
falls within the limits allowed of ±10%
compared to the classification listed on the
ID plate.
The main power supply must be
arranged so that it can be turned on or off
independently from that of other parts of
the system or other appliances in general.
Check the wiring diagram, terminals L1,
L2, L3 and PE.
 6
Install the water filter kit(s) (also when
not supplied) at the inputs to the
exchangers.
 7
Supply water to the exchangers and make
sure that the flow falls within the limits
shown in the table in the "Load, flow and
quality of the water" section.
 8
The pipes must be completely flushed
out. See also the chapter "Preparing,
checking and connecting the water circuit".
 9
Connect the pump contact(s) in series
with the contact of the flow meter(s) so
that the unit can only be activated when
the water pumps are operating and the
flow of water is sufficient.
 10
Check the oil level in the compressors.
 11
Check that all the water sensors are
fastened correctly to the heat exchanger
(also see the label applied to the heat
exchanger).
NOTE - Before starting the unit:
- read the operating manual which comes supplied
with the unit. It will help you better understand how
the appliance and electronic controller work;
- close the doors on the electrical panel.
Open the isolation and/or shut off valves
Before start-up, make sure that all the isolation and/or
switch off valves are completely open.
User responsibilities
It is essential that the user is properly trained and
becomes familiar with the system before operating the
unit. In addition to reading this manual, the user must
study the microprocessor operating manual and the
wiring diagram in order to understand the start-up
sequence, operation, shutdown sequence and
operation of all the safety devices.
The user must keep a log (unit booklet) of the operating
data of the unit installed and of all periodical
maintenance and service activities.
If the operator notes abnormal or unusual operating
conditions, he or she must consult the authorised
manufacturer's technical service.
Periodical maintenance
The periodical maintenance activities (minimum), are
listed in the specific table of this manual.
Service and limited guarantee
All the units are tested at the factory and guaranteed for
a specific period of time.
These units have been developed and constructed
according to high quality standards to provide years of
problem-free operation. It is however important to
ensure proper and periodical maintenance in
accordance with all the procedures listed in this manual
and with good practice of machine maintenance.
We strongly recommend taking a maintenance contract
with a service authorised by the manufacturer. The
experience and skill of the personnel can ensure
efficient operation without problems over time.
The unit must be covered by a suitable
maintenance program from the time it is installed
and not just from the start-up date.
Keep in mind that operating the unit in an inappropriate
manner, beyond its operating limits or not performing
proper maintenance according to this manual will void
the guarantee.
Observe the following points in particular, in order to
comply with the guarantee:
1. The unit cannot function beyond the specified limits.
2. The electrical power supply must be within the
voltage limits and without voltage harmonics or sudden
changes.
3. The three-phase power supply voltage must not have
an imbalance between the phases greater than 2% in
accordance with EN 60204-1:2006 (Chapter 4-
Paragraph 4.3.2).
4. In the event of electrical problems, the unit must
remain off until the problem has been solved.
5. Do not disable or cancel the safety devices, whether
mechanical, electrical or electronic.
6. The water used for filling the water circuit must be
clean and suitably treated. A mechanical filter must be
installed at the point closest to the evaporator inlet.