Installation manual
11
RMXS112~160D7V3B
Super Multi Plus System air conditioner
4PW19516-1B
To avoid compressor breakdown. Do not charge the refrigerant
more than the specified amount.
■
This outdoor unit is factory charged with refrigerant and
depending on pipe sizes and pipe lengths some systems require
additional charging of refrigerant. See "How to calculate the
additional refrigerant to be charged" in
■
Make sure to use installation tools you exclusively use on
R-410A installations to withstand the pressure and to prevent
foreign materials from mixing into the system.
■
Charge the refrigerant to the liquid pipe in its liquid state. Since
R-410A is a mixed refrigerant, its composition changes if
charged in a state of gas and normal system operation would no
longer be assured.
■
Before filling, check whether the tank has a siphon attached or
not.
■
Determine the weight of refrigerant to be charged additionally
referring to the item "Additional refrigerant charge" in "How to
calculate the additional refrigerant to be charged" in
"9.7. Example of connection" on page 9
the label attached to the backside of the front panel.
Charging while the outdoor unit is at standstill
■
After the vacuum drying is finished, charge the additional
refrigerant in its liquid state through the liquid stop valve service
port taking into account following instructions:
-
Check that gas and liquid stop valves are closed.
-
Stop the compressor and charge the specified weight of
refrigerant.
Charging while the outdoor unit is operating
1
Completely open the gas line stop valve.
Valve A must be left fully closed. Make sure the liquid stop valve
is totally shut. If it is open, the refrigerant cannot be charged.
Charge the additional refrigerant in its liquid state through the
service port of the liquid line stop valve.
2
While the unit is at standstill and under setting mode 2 (refer to
Checks before initial start-up
,
set the required function A (additional refrigerant charging
operation) to
(ON). Then operation starts. The blinking H2P
led indicates test operation and the remote controller indicates
(test operation) and
(external control).
3
When the specified amount of refrigerant is charged, push the
button. Then operation stops.
■
The operation automatically stops within 30 minutes.
■
If the refrigerant charge cannot be finished within 30 minutes,
repeat step 2.
■
If the operation stops immediately after restart, there is a
possibility that the system is overcharged.
The refrigerant cannot be charged more than this amount.
4
After the refrigerant charge hose is removed, make sure to fully
open the liquid stop valve. Otherwise the piping may burst due to
blocked liquid.
5
After the refrigerant is charged, turn on the power for the BP unit
and for the outdoor unit.
10. E
LECTRICAL
WIRING
WORK
10.1. Internal wiring – Parts table
A1P........................ Printed circuit board (main)
A2P........................ Printed circuit board (inverter)
A3P........................ Printed circuit board (noise filter)
BS1~BS5 ............... Push button switch (mode, set, return, test,
reset)
C1~C3 ................... Capacitor
DS1, DS2............... Dip switch
E1HC ..................... Crankcase heater
F1U........................ Fuse (T6, 3 A/250 V)
F2U........................ Field fuse
H1P~H7P .............. Light emitting diode (service monitor orange)
HAP ....................... Light emitting diode (service monitor green)
K1M ....................... Magnetic contactor (M1C)
K2R........................ Magnetic relay (K1M)
K1R........................ Magnetic relay (Y1S)
K2R........................ Magnetic relay (Y2S)
K4R........................ Magnetic relay (Y3S)
K5R........................ Magnetic relay (E1HC)
L1R ........................ Reactor
M1C ....................... Motor (compressor)
M1F, M2F............... Motor (fan)
PS.......................... Switching power supply
Q1DI ...................... Earth leakage breaker (field supply) (30 mA)
R1 .......................... Resistor (current limiting)
R2 .......................... Resistor (current sensor)
R1T........................ Thermistor (air)
R2T........................ Thermistor (suction)
R3T........................ Thermistor (compressor discharge)
R4T........................ Thermistor (heat exchanger de-icer)
R5T........................ Thermistor (heat exchanger outlet)
S1NPH................... Pressure sensor (high)
S1NPL ................... Pressure sensor (low)
S1PH ..................... Pressure switch (high)
T1R........................ Transformer (230 V/20 V)
V1R, V2R............... Power module (A2P)
V1T ........................ IGBT (A2P)
X1M ....................... Terminal strip (power supply)
X1M ....................... Terminal strip (control)(A1P)
Y1E........................ Electronic expansion valve (main)
Y2E........................ Electronic expansion valve (subcool)
Y1S........................ Solenoid valve (hot gas)
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.
If the total refrigerant cannot be charged while the outdoor
unit is at standstill, it is possible to charge the refrigerant by
operating the outdoor unit using the refrigerant charge
function (refer to
ON
BS3 RETURN
■
All wiring must be performed by an authorized
electrician.
■
All components procured on the site and all electric
construction should comply with the applicable local
and national codes.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)
