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Daikin R-410A Installation Manual: Field Wiring

Edus 39-605a-n.
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EDUS39-605
Before filling, check whether the tank has a siphon
attached or not.
How to fill a tank with a siphon attached..
Fill with the tank upright.
There is a siphon tube
inside, so there is no need
to turn the tank upside-down.
Other ways of filling the tank
Fill with the tank upside-down.
Determine the amount of refrigerant to be added by refer-
ring to the table, write it down on the included "Added
Refrigerant" plate and attach it to the rear side of the front
cover.
Note: Refer to Section 6-3, Example of Connection on Page
___.for the amount to be added.
1. After the vacuum drying is finished, charge the addi-
tional refrigerant in its liquid state through the liquid stop
valve service port. You must then take the following
steps: Check that gas and liquid stop valves are closed.
2. Stop the compressor and charge the specified weight of
refrigerant.
If the outdoor unit is not in operation and the total amount
cannot be charged, follow the procedures for additional
refrigerant charge shown below.
Make sure to use installation tools you exclusively use on
R-410A installations to withstand the pressure and to pre-
vent foreign materials from mixing into the system.
Procedures for charging additional refrigerant
are as follows:. One outdoor unit installed:
Pressure reducing valve
1.
Nitrogen
2.
Tank
3.
Siphon system
4.
Measuring instrument
5.
Vacuum pump
6.
Valve A
7.
Gas side
8.
Outdoor unit
9.
Liquid side
10.
Indoor unit
11.
Stop valve service port
12.
Charge hose
13.
To indoor unit
14.
Oil-equalizing line
15.
Valve B
16.
Dotted lines represent field supply piping
17.
Additional refrigerant charge procedures are as follows:
To learn the system settings for additional refrigerant charg-
ing, refer to the [Service Precaution] label attached on the
back of the electric box lid in the outdoor unit.
1. Fully open the gas-line stop valve but the liquid line stop
valve and valve A above must be left fully closed. Start
the additional refrigerant charge operation.
2. After the system is charged with a specified amount of
refrigerant, press the confirmation button (BS3) on the
P-board (A1P) in the outdoor unit to stop the additional
refrigerant charge operation.
Installation of Outdoor Units
3. Immediately restore the stop valve to the following sta-
tus. The test operation cannot be performed properly if
the stop valve is not correct.
Liquid line
Gas line
stop valve
stop valve
Open
Multiple Outdoor Units Installed:Refer to figure 12
To learn the system settings for additional refrigerant charg-
ing, refer to theService Precaution label attached on the
back of the electric box lid in the outdoor unit.
Use the following procedure to add additional refrigerant
charge:
1. Fully open the gas line stop valve/oil-equalizing line stop
valve (liquid line stop valve and valves A and B above
must be left fully closed), and begin the additional refrig-
erant charge operation.
2. After the system is charged with a specified amount of
refrigerant, press the confirmation button (BS3) on the
P-board (A1P) in the outdoor unit to stop the additional
refrigerant charge operation.
3. Immediately restore the stop valve to the following sta-
tus as a test operation cannot be performed properly if
the stop valve is not correct:
Liquid line
Gas line
stop valve
stop valve
Open
NOTE
If the refrigerant cylinder is siphonal, set it upright while
charging additional refrigerant.
7.

FIELD WIRING

NOTE
All field wiring and components must be installed by a
licensed electrician and must comply with relevant local
and national regulations.
The field wiring must be carried out in accordance with the
following wiring diagrams and the instructions given below.
Be sure to use a dedicated power circuit. Never use a
power supply shared by another appliance.
This product's reversed phase protection detector only
works when the product started up.
The reversed phase protection detector is designed to stop
the product in the event of an abnormalities when the prod-
uct is started up.
Replace two of the three phases (L1, L2, and L3) during
reverse-phase protection circuit operation.
Reversed phase detection is not performed while the prod-
uct is operating.
If there exists the possibility of reversed phase after an
momentary black out and the power goes on and off while
the product is operating, attach a reversed phase protec-
tion circuit locally. Running the product in reversed phase
can break the compressor and other parts.
Installation
Oil-equalizing line
stop valve
Close (Default status
Open
before delivery)
Oil-equalizing line
stop valve
Open
Open
30

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