Test Run - Daikin CONVENI-PACK Installation Manual

• When the only indoor unit connected is an air-conditioner (when
the showcase is not connected to the air-conditioning side), refer
to the Service Manual for instructions on additional refrigerant
charging.
1. The refrigerant must be noted for this product. Calculate the
amount of refrigerant replenishment according to the label for the
calculation of the amount of refrigerant replenishment.
Procedures for calculating refrigerant charge amounts are
described in page 18.
2. Take the following procedure for refrigerant replenishment.
Refer to "8-1 Air Tight Test/Vacuum Drying" for the connection
of the refrigerant cylinder.
(1) Turn on the indoor unit and control panel.
Do not turn on the outdoor unit.
(2) Replenish refrigerant from the service port of the shutoff valve on
the liquid side.
(3) If the calculated amount of refrigerant cannot be filled, take the
following steps to operate the system and continue refrigerant
replenishment.
a. Open the gas shutoff valve all the way and adjust the opening
of the liquid shutoff valve (*1).
b. [Warning/Electric Shock Warning]
Turn on the outdoor unit.
c. [Warning/Electric Shock Warning]
Turn on the RUN switch of the outdoor unit and replenish
refrigerant while the outdoor unit is in operation.
d. Turn off the RUN switch of the outdoor unit after the specified
amount of refrigerant is replenished.
e. [Caution]
Fully open the shutoff valves on the gas and liquid sides
promptly. Otherwise, a piping explosion may result from liquid
sealing.
Control box
Label pasting position
*1 The cylinder's internal pressure will drop when there is little refrig-
erant remaining in the cylinder, making it impossible to charge the
unit, even if the liquid shutoff valve opening is adjusted. In this sit-
uation, replace the cylinder with one that has more refrigerant
remaining.
Additionally, if the piping length is long, replenishing while the liq-
uid shutoff valve is fully closed may lead to activation of the pro-
tection system, causing the unit to stop operation.
1. After the work is completed, apply a screw lock agent (for flare
nuts) to the screws of the shutoff valves and service ports.
Refer to the "Handling Precautions for Valve Cover" and "Handling
Precautions for Service Port" in "6-5 Connecting the Refrigerant
Piping" for the handling of the valve covers and service ports.
2. After the refrigerant replenishment is completed, fill out the item
"total amount of refrigerant replenishment" on the label of instruc-
tions on refrigerant replenishment of the outdoor unit with the
actual amount of refrigerant replenishment.
Refer to the illustration of the label pasting position for instructions
on refrigerant replenishment (see the illustration on the above).
16
Label of instructions on
refrigerant replenishment
[Precautions for refrigerant cylinder]
At the time of refrigerant filling, check whether the siphon tube is pro-
vided. Then locate the cylinder so that the refrigerant will be filled in
the state of liquid (see table below).
R410A is a mixed refrigerant, the composition of which may change
and the normal operation of the system may not be possible if the
refrigerant is filled in the state of gas.
Cylinder provided with siphon tube.
Stand the cylinder upright and fill the refrigerant.
(There is a siphon tube inside, which makes it
possible to replenish the refrigerant in the state of
liquid without setting the cylinder upside down.)
Other cylinders
Stand the cylinder upside down and fill the
refrigerant.
(Pay attention so that the cylinder will not topple
down.)
[Check through sight glass]
Full of liquid A little foam Foam always
flows. comes out.
Refrigerant insufficiency
Sealing state
CAUTION
• Fully open the shutoff valves on the liquid and gas sides
after the refrigerant replenishment is finished.
The compressor will malfunction if the system is operated with the
shutoff valves closed.
• Apply a screw lock agent to the screws of the valve cover
mounting parts and service ports.
(Otherwise, dew condensation water will intrude and freeze inside
and cause cap deformation or damage, which may result in refrig-
erant gas leakage or compressor malfunctions.)

11. TEST RUN

For test run operators
Do not operate the outdoor unit alone on a trial basis.
When you connect a booster unit, refer to the installation manual
attached to the booster unit before a test run.
Test run procedure
Use the following procedure to perform a test run after installation
work is complete for the entire system:
1.
Fully open the shutoff valves on the gas and liquid side of the out-
door unit.
2.
Check that the electric accessory box lids of the outdoor unit, the
indoor unit (air-conditioner, refrigeration showcase, refrigeration
unit cooler) and the piping cover of the outdoor unit are closed.
Then turn on the outdoor and indoor units (air conditioner, refrig-
eration showcase, refrigeration unit cooler).
3.
Turn on the operation switch from the inspection door of the out-
door unit. (The outdoor fan rotates in about 10 minutes after the
operation switch is turned on and the compressor starts.)
4.
Push the ON/OFF button on the remote controller of the outdoor
unit (air-conditioner) to operate the unit.
5.
Check the sealing condition through the sight glass of the outdoor
unit. In case of shortage of refrigerant, check if the refrigerant is
charged to the specified level.
Sight glass
English