SYSVRF2 CASSETTE 1W IM

Fig.8-4
Fig.9-1(18-36 model)
Air Purging
Use a vacuum pump, to vacuum from the gas side refrigerant
adding mouth of the outdoor unit.
Don’t use the refrigerant of the outdoor unit to do the vacuum.
(A certain volume of refrigerant had been added into the
outdoor unit in factory.)
Open/Close the valves
Open/Close the spools or the valves of outdoor unit with a
f5mm hexagon spanner.
Leakage Test
Test if there is any leakage on the connections of the piping
with soap water.
Heat Insulation
Heat insulation for the gas and liquid pipe separately.
Heat insulation should be fully and carefully done, because the
liquid side pipe and gas side pipe are easy to condense water
due to low temperature when cooling.
Heat proof above 120°C material should be used at the gas
side pipe.
The indoor unit connection parts should b e no-gap
heat-insulated with the attached heat insulation materials.
Wrap to the foot of the piping
Field Piping side
Attached Heat Insulation Material
Unit Body
Attaching wiring
The air conditioner should use separate power supply with
rated voltage.
The external power supply to the air conditioner should have
ground wiring, which is linked to the ground wiring of the indoor
and outdoor unit.
The wiring work should be done by qualified persons according
to circuit drawing.
an all-pole disconnection device which has at least 3mm
separation distance i n all pole and a residual current
device(RCD)with the rating of above 10mA shall be incorporated
in the fixed wiring according to the national rule.
Be sure to locate the power wiring and the signal wring well to
avoid cross-disturbance and their contact with connecting pipe
or stop value body.
The wiring attached to this air conditioner is 10m long. Be sure
to prolong it with wiring of the same type and proper length
if necessary. Generally, do not twist two wiring together unless
the joint is soldered well and covered with insulator tape.
Do not turn on the power until you have checked carefully after
wiring.
Indoor unit electric wiring figure
The air conditioner should use separate power supply with
rated voltage.
The external power supply to the air conditioner should have
ground wiring, which is linked to the ground wiring of the indoor
and outdoor unit.
The wiring work should be done by qualified persons according
9. WIRING CHART
8
installation manual
X1 X2 P Q E
E Q P
Wiring plate
Caution! For wiring
convenience, two
communicative
terminals
can be pulled out from
wiring plate.
X2 X1
L N
N L
CN1
CN3
CN4
CN6
CN5
DM
T2B
T2
T1
FM
GM
CS
PMV
XP1 XS1
XP2 XS2
XP4 XS4
XP3 XS3
Display board
ON/OFF
POWER INPUT
E D2 D1
ENC1
SW1 SW7SW2SW3SW4SW5
SW6
CN2
ONON
POWER_S
CN20
CN17
CN9
CN15
CN21
CN14
ONONONONON
CN8CN7
CN16
J2
CN5
CN25
J1
CN30
CN11CN6CN4CN55
CN24
CN13
CN3
CN31
Main control panel
Red White Black
Y/G
Y/G
To outdoor/
indoor units
COMM. BUS
To wired
controller
COMM. BUS
To wired
controller
COMM. BUS
Wired
controller
FM
GM1-2
DM
CS
PMV
T1
T2
T2B
XP1-4
XS1-4
Code
Fan motor
Swinging motor
Water drainage pump
Water level sensor
Electronic expansion valve
Room temp. sensor
Middle pipe temp. sensor
Outlet pipe temp. sensor
Connectors
Connectors
Name