Checklist Before Commissioning The Indoor Unit - Daikin SERHQ020BAW1 Installation And Operation Manual

7 Commissioning
Power supply wiring and transmission wiring
Use a designated power supply and transmission wiring
and make sure that it has been carried out according to
the instructions described in this manual, according to the
wiring diagrams and according to local and national
regulations.
Additional refrigerant charge
The amount of refrigerant to be added to the unit shall be
written on the included "Added refrigerant" plate and
attached to the rear side of the front cover.
Airtightness test and vacuum drying
Make sure the airtightness test and vacuum drying were
completed.
7.3 Checklist before commissioning
the indoor unit
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
You read the complete installation and operation
instructions, as described in the installer and user
reference guide.
Installation
Check that the unit is properly installed, to avoid abnormal
noises and vibrations when starting up the unit.
Field wiring
Be sure that the field wiring has been carried out
according to the instructions described in the chapter
"5.8 Connecting the electrical wiring" on page
according to the wiring diagrams and according to the
applicable legislation.
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.
Earth wiring
Be sure that the earth wires have been connected
properly and that the earth terminals are tightened.
Insulation test of the main power circuit
Using a megatester for 500 V, check that the insulation
resistance of 2 MΩ or more is attained by applying a
voltage of 500 V DC between power terminals and earth.
NEVER use the megatester for the transmission wiring.
Fuses, circuit breakers, or protection devices
Check that the fuses, circuit breakers, or the locally
installed protection devices are of the size and type
specified in the chapter
requirements" on page 11. Be sure that neither a fuse nor
a protection device has been bypassed.
Internal wiring
Visually check the electrical component box and the
inside of the unit on loose connections or damaged
electrical components.
Installation and operation manual
36
23,
"4.4.1 Safety device
Pump rotation direction
If the 3-phase power input to the indoor unit is not
correctly wired (X1M), the pump may rotate in the wrong
direction. When this happens, the pump may slowly
overheat due to reduced air flow, fan ventilation may be
reduced and the motor may consume more power. The
indicator on the pump motor fan cover indicates the
direction of rotation of the pump. Check operation of this
indicator before starting the unit for the first time or when
the position of the indicator has changed. If the indicator is
in the white/reflecting field, switch off the power supply
and switch any two of the incoming supply wires at X1M.
The correct direction of rotation is also shown by arrows
on the pump motor fan cover.
a
a = pump rotation direction indicator
Pipe size and pipe insulation
Be sure that correct pipe sizes are installed and that the
insulation work is properly executed.
The air purge valve is open (at least 2 turns).
Shut-off valves
Be sure that the shut-off valves are correctly installed and
fully open.
Filter
Make sure that the filter is installed correctly.
Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
Brazing
Take care not to damage the piping insulation when
brazing field piping.
Water leak
Check the inside of the unit for water leakage. If there is a
water leak, try to repair the leak. If the repair is
unsuccessful, close the water inlet and outlet shut-off
valves and call your local dealer.
Installation date and field setting
Be sure to keep record of the installation date on the
sticker on the rear of the upper front panel according to
EN60335‑2‑40 and keep record of the contents of the field
setting(s).
Schedule timer form
Fill out the form at the very end of this document. When
programming the schedule timer, this form can help you
define the required actions for each day.
NOTICE
Operating the system with closed valves will damage the
pump.
Once all checks are fulfilled, the unit must be closed, only then can
the unit be powered up. When the power supply to the unit is turned
on, " " is displayed on the user interface during its initialization,
which may take up to 30 seconds. During this process, the user
interface cannot be operated.
SERHQ020~032BAW1 + SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508019-2B – 2018.01