Kaysun KMF-80 DVR5, Owners & Installation Manual

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31
The procedure for adding refrigerant is as follows:
1. Calculate additional refrigerant charge R (kg).
2. Place a tank of R32 refrigerant on a weighing scale.
Turn the tank upside down to ensure refrigerant is
charged in a liquid state.
3. After vacuum drying, the blue and red pressure gauge
hoses should still be connected to the pressure gauge
and to the master unit stop valves.
4. Connect the yellow hose from the pressure gauge to
the R32 refrigerant tank.
5. Open the valve where the yellow hose meets the
pressure gauge, and open the refrigerant tank slightly
to let the refrigerant eliminate the air. Caution: open
the tank slowly to avoid freezing your hand.
6. Set the weighing scale to zero.
7. Open the three valves on the pressure gauge to begin
charging refrigerant.t
8. When the amount charged reaches R (kg), close the
three valves. If the amount charged has not reached
R (kg) but no additional refrigerant can be charged,
close the three valves on the pressure gauge, run the
outdoor units in cooling mode, and then open the yel-
low and blue valves. Continue charging until the full R
(kg) of refrigerant has been charged, then close the
yellow and blue valves. Note: Before running the sys-
tem, be sure to complete all the pre-commissioning
checks and be sure to open all stop valves as running
the system with the stop valves closed would damage
the compressor.
Fig 15-1
R32
refrigerant tank
Weighing scale
Pressure gauge
Yellow hose
Blue hose Red hose
ODU unit
Field piping
①
Gas pipe stop valve
②
Liquid pipe stop valve
16 Electrical Wiring
16.1 Safety Device Requirements
1. Select the minimum diameter for each unit based on the
rated current, as shown in Table 16-1 and Table 16-2.
2. Use a circuit breaker with a spacing between polar
contacts of at least 3 mm to ensure full disconnection.
MFA is used to select the current circuit breaker and
the residual current action circuit breaker.
3. The wire carrying capacity is for reference purposes
only. The modification factor of the actual carrying ca-
pacity depends on cable type and length, lead-through
method, and the environment for cable laying. The user
is recommended to modify the factor according to local
laws and the installation conditions.
4. The equipment complies with IEC 61000-3-12.
Table 16-1
Rated current
of device (A)
Nominal cross-sectional area
(mm²)
Soft wire
Cable for fixed
wiring
≤ 3 0.5 and 0.75 1~2.5
> 3 and ≤ 6 0.75 and 1 1~2.5
> 6 and ≤ 10 1 and 1.5 1~2.5
> 10 and ≤ 16 1.5 and 2.5 1.5~4
> 16 and ≤ 25 2.5 and 4 2.5~6
> 25 and ≤ 32 4 and 6 4~10
> 32 and ≤ 50 6 and 10 6~16
> 50 and ≤ 63 10 and 16 10~25
● A fixed device that is permanently connected
to a fixed cable is considered to meet
this requirement if the description of the
disconnection of the fixed cable satisfies AS/
NZS 3000.
Caution
Table 16-2
Power supply
Model ODU Power supply current Compressor Fan motor
Capacity
(kW)
Voltage
(V)
Frequency
(Hz)
Minimum
(V)
Maximum
(V)
Minimum current
(rated current) (A)
TOCA
(A)
Maximum
fuse
current
(A)
MSC
(A)
RLA
(A)
Power
(kW)
FLA
(A)
220-240 V ~
50 Hz
8 220-240 50 198 264 21.3 18.1 25 - 17.1 0.08 1.0
10 220-240 50 198 264 29.0 24.0 32 - 22.0 0.08 1.0
12 220-240 50 198 264 35.0 29.0 40 - 26.5 0.20 1.5
14 220-240 50 198 264 40.0 33.0 40 - 30.5 0.20 1.5
16 220-240 50 198 264 40.0 33.0 40 - 30.5 0.20 1.5
Abbreviations:
MCA: minimum current ampacity (A); TOCA: total overcurrent amps (A); MFA: maximum fuse ampere (A); MSC: maximum
starting current (A); RLA: rated load amps (A); FLA: full load amps
● The unit is compatible with electrical systems that satisfy the following condition: The voltage supplied to the unit terminal is
not lower than or greater than the listed value.
● Select cable specifications according to the MCA value (the rated current in Table 16-1).
● TOCA is the total overcurrent amps of each OC set.
● MFA is used to select the overcurrent circuit breaker and residual current circuit breaker.
● MSC indicates the maximum current upon compressor starting.
● RLA is based on the following conditions: indoor temperature: 27°C DB, 19°C WB; outdoor temperature: 35°C DB.