60
Torque wrench
Spanner or
Wrench
Piping size (Torque)
Gas Liquid
ø15.88 mm (5/8”) [65 N•m]
Ø9.52 mm (3/8”) [42 N•m]
Liquid Refrigerant Pipe
Gas Refrigerant Pipe
CAUTION
Do not over tighten, over tightening cause water leakage.
CAUTION
Please take extra precaution when open the control board cover
6 and control board 7 for indoor unit installation and servicing.
Failure to do so may cause injury.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove
the burrs.
2. Remove the burrs by using reamer. If burrs is
not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal
powder entering the pipe.
3. Please make flare after inserting the flare nut
onto the copper pipes.
When properly
fl
ared, the internal surface
of the
fl
are will evenly shine and be of even
thickness. Since the
fl
are part comes into
contact with the connections, carefully check
the
fl
are
fi
nish.
■
Improper
fl
aring
■
Inclined Surface
damaged
CrackedUneven
thickness
1. To cut
2. To remove burrs
3. To
fl
are
Bar
Red arrow mark
Handle
Core
Yoke
Clamp handle
Bar
0 – 0.5 mm
Copper
pipe
Reamer
Point down
Pipe
11.1.4.5 Drain Elbow and Hose
Installation
Fix the drain elbow
2
and packing
3
to the bottom
of indoor unit, as shown in below illustration.
Use inner diameter 17 mm drain hose in the
market.
This hose must to be installed in a continuously
downward direction and in a frost-free
environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage or drain pipe
that may generate ammonia gas, sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Packing
Drain Elbow
3
2
11.1.4.6 Pressure
Relief Valve Drainage
Pipework
Connect a drain hose to the pressure relief valve
hose outlet.
This hose must to be installed in a continuously
downward direction and in a frost-free
environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage hose or
cleaning hose that may generate ammonia gas,
sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Pressure relief valve
hose outlet
11.1.5 Connect The Cable To The Indoor
Unit
WARNING
This section is for authorised and licensed electrician only. Work
behind the Control Board Cover 6 secured by screws must
only be carried out under supervision of qualified contractor,
installation engineer or service person.
11.1.5.1 Open the Control Board Cover
6
Please follow the steps below to open control board
cover. Before opening the control board cover of
indoor unit, always switch off all power supply (i.e.
indoor unit power supply, heater power supply and
Tank Unit power supply).
1. Remove the 6 mounting screws at the control
board cover.
2. Swing the control board cover to the right hand
side.
