Hard PVC pipe
Connected by hose connector
(Prepared on site)
Drain clamp (accessory)
Drain port
Drain hose (accessory)
Hard PVC pipe
Insulation (accessory)
A Connect the drain pipe
a Use standard hard PVC pipe (19mm) for the drain pipe.
b Use the drain hose (Accessory) to change the direction.
c Insert the drain hose until it connects the drain port very well, And then secure it tightly with the hose clamp(Accessory).
d After checking the drainage, wrap the drain hose with the insulation and clamps (Accessory).
1m
1 1.5m
Ceiling
Drain hose(accessory)
1/100 gradient or more
Clamp(accessory)
Bracket
The Compensation setting according to installation height can be done by using the dip switch 11 and 12 on controller PCB.
Installation Height
Height Code
DS11
DS12
2.3-2.7(m)
H0
OFF
OFF
2.7-3.1(m)
H1
OFF
ON
3.1-3.5(m)
H2
ON
OFF
>3.5(m)
H3
ON
ON
Note
1.Please disconnect the unit from power
supply when change these settings.
2.If you feel too noisy, please set DS11 and
DS12 to lower height code level.
6
ELECTRICAL WRING CONNECTION
Power supply wiring
Main bus communication and R/C wiring
1.Unscrew and remove the electrical box cover.
2.Connect the power supply wiring to the power
supply terminal block.
3.When doing this,press the power supply wiring
under the wire clip tightly.
1.Unscrew and remove the electrical box cover.
2.Connect the R/C wirings to R1,R2 terminal block
and the mainbus wirings to F1,F2 terminal block.
3.Press the wirings under the wire clip tightly.
1.Use the correct screwdriver for tightening the terminal screws.If the blade of screwdriver is too small, the head of the
screw might be damaged, and the screw will not be properly tightened.
2.If the terminal screws are tightened too hard, screws might be damage.
3.Refer to the table below for the tightening torque of the terminal screws.
Tightening to torque for the terminal screws
NOTE: For how to connect the power wire and communication wire between outdoor unit and indoor units, please refer to chapter 9 “Field
Wiring” in outdoor unit installation manual.
5
HEIGHT COMPENSATION SETTING
B Drainage test
For VRF system please do drainage test after finishing all
installations, wiring and piping included, and doing ITEST
(Installation test ) sucessfully:
(1) Prepare works please refer to Fig 17.
(2) Power on the system, and runs cooling mode.
(3) Check whether the pump sound is normal.
(4) Slowly inject about 1,000 cc of water into the drain pan.(Fig 17)
Check the drainage through the transparent drain port to
see if any drain leakage happens.
(5) When the check is finished, do not forget to cut off the power
supply.
Fig 16
Fig 17
4
DRAIN PIPE CONNECTION
Fig 14
Fig 15
NOTE
1. Make sure the drain pipe has a downward gradient (no less than
1/100) And there are no water traps.
2. Do not raise the drain pipe higher than 1 m, or else there will be
water leak risk.
3. To hold the drain pipe, space bracket every 1 to 1.5m.(Fig 16)
