Giatsu WD2N8B Serie Manuel De L'utilisateur Et D'installation page 101

10 START-UP AND CONFIGURATION
The unit should be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.)
and user expertise.
CAUTION
It is important that all information in this chapter is read
sequentially by the installer and that the system is configured
as applicable.
10.1 Initial start-up at low outdoor ambient
temperature
During initial start-up and when water temperature is low, it is
important that the water is heated gradually. Fail to do so may
result in concrete floors cracking due to rapid temperature change.
Please contact the responsible cast concrete building contractor
for further details.
To do so, the preheating function for floor can be used.(Please
refer to "SPECIAL FUNCTION" in "FOR SERVICEMAN")
10.2 Pre-operation checks
Checks before initial start-up.
DANGER
Switch off the power supply before making any connections.
After the installation of the unit, check the following before
switching on the circuit breaker:
Field wiring：Make sure that the field wiring between the local
supply panel and unit and valves (when applicable), unit and
room thermostat (when applicable), unit and backup heater kit
have been connected according to the instructions described
in the chapter 9.6 "Field wiring", according to the wiring
diagrams and to local laws and regulations.
Fuses, circuit breakers, or protection devices Check that the
fuses or the locally installed protection devices are of the size
and type specified in 15 "TECHNICAL SPECIFICATIONS".
Make sure that no fuses or protection devices have been
bypassed.
Backup heater circuit breaker：Do not forget to turn on the
backup heater circuit breaker in the switchbox (it depends on
the backup heater type). Refer to the wiring diagram.
Ground wiring：Make sure that the ground wires have been
connected properly and that the ground terminals are
tightened.
Internal wiring：Visually check the switch box for loose
connections or damaged electrical components.
Mounting：Check that the unit is properly mounted, to avoid
abnormal noises and vibrations when starting up the unit.
Damaged equipment：Check the inside of the unit for
damaged components or squeezed pipes.
Refrigerant leak：Check the inside of the unit for refrigerant
leakage. If there is a refrigerant leak, call your local dealer.
Power supply voltage：Check the power supply voltage on
the local supply panel. The voltage must correspond to the
voltage on the identification label of the unit.
Air purge valve：Make sure the air purge valve is open (at
least 2 turns).
Shut-off valves：Make sure that the shut-off valves are fully
open.
10.3 Failure diagnosis at first installation
If nothing is displayed on the user interface, it is
necessary to check for any of the following
abnormalities before diagnosing possible error codes.
-Disconnection or wiring error (between power supply
and unit and between unit and user interface).
-The fuse on the PCB may be broken.
If the user interface shows "E8" or "E0" as an error
code, there is a possibility that there is air in the
system, or the water level in the system is less than
the required minimum.
If the error code E2 is displayed on the user interface,
check the wiring between the user interface and unit.
More error code and failure causes can be found in
14.3 "Error codes".
10.4 Installation Manual
10.4.1 Safety precaution
Read the safety precautions carefully before installing
the unit.
Stated below are important safety issues that must be
obeyed.
Conform there is no abnormal phenomena during test
operation after complete, then hand the manual to the
user.
Meaning of marks:
WARNING
Means improper handling may lead to personal death
or severe injury.
CAUTION
Means improper handling may lead to personal
injury or property loss.
WARNING
Please entrust the distributor or professionals to install
the unit.
Installation by other persons may lead to imperfect
installation, electric shock or fire.
Strictly follow this manual.
Imporper installation may lead to electric shock or fire.
Reinstallation must be performed by professionals.
improper installation may lead to electric shock or fire.
Do not disassemble your air conditioner at will.
A random disassembly may cause abnormal operation
or heating, which may result in fire.
CAUTION
The wired controller should be installed indoors and
not be exposed to sunlight directly.
Do not install the unit in a place vulnerable to leakage
of flammable gases.
Once flammable gases are leaked and left around the
wired controller, fire may occure.
The wiring should adapt to the wired controller current.
Otherwise, electric leakage or heating may occur and
result in fire.
The specified cables shall be applied in the wiring. No
external force may be applied to the terminal.
Otherwise, wire cut and heating may occur and result in
fire.
36