En-5
Drain holder
DRAIN HOSE
Screw
DRAIN CAP
Installation method of Drain cap
Use a hexagonal wrench (4 mm at opposite side)
to insert the drain cap, till the drain cap contacts
the tip of drain cook.
No gap
Drain cock
Drain cap
Hexagon
wrench
CAUTION
Insert the drain hose and drain cap into the drain port, making sure that it comes
in contact with the back of the drain port, and then mount it. If the drain hose is not
connected properly, leaking will occur.
6.7. Indoor unit installation
• Use the included and fasten the indoor unit at 4 locations (
→
) each at top and the
middle of the unit.
• When the unit is set to the wall, use the wall hook bracket and hook the top of the
indoor unit on the indoor unit wall hook bracket.
124
423
703
124
438
Unit: mm
WARNING
Fix the indoor unit with 4 screws surely. If improperly installed, might cause to injury
due to the toppling or falling.
Install the indoor unit at the place that has adequate strength. Install the indoor unit so
that the installed unit can withstand the weight of adult body weight.
If improperly installed, might cause accidental injury due to the toppling or falling.
6.8. Installing the wall hook bracket
(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically.
If the wall hook bracket is tilted, water will drip to the fl oor.
(2) Install the wall hook bracket so that it is strong enough to support the weight of the
unit.
• Fasten the wall hook bracket to the wall with 5 or more screws through the holes near
the outer edge of the bracket.
• Check that there is no rattle at the wall hook bracket.
Weight
Leveling
method
Hook the indoor unit to the wall
hook bracket (2 positions)
CAUTION
Install the wall hook bracket level, both horizontally and vertically.
6.9. Flare connection (Pipe connection)
WARNING
Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to
leak and generate hazardous gas if the refrigerant comes into contact with a fl ame.
6.9.1. Flaring
Use special pipe cutter and fl are tool exclusive for R410A.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any
burrs.
(3) Insert the flare nut (always use the flare nut attached to the indoor unit(s) and
outdoor unit or branch box respectively) onto the pipe and perform the flare
processing with a fl are tool. Use the special R410A fl are tool, or the conventional
fl are tool. Leakage of refrigerant may result if other fl are nuts are used.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
entering the pipes.
L
Check if [L] is flared uniformly and
is not cracked or scratched.
Pipe
Die
Pipe outside diameter
[mm (in.)]
Dimension A [mm]
Dimension B
-
0
0.4
[mm]
Flare tool for R410A,
clutch type
6.35 (1/4)
0 to 0.5
9.1
9.52 (3/8)
13.2
12.70 (1/2)
16.6
15.88 (5/8)
19.7
19.05 (3/4)
24.0
When using conventional fl are tools to fl are R410A pipes, the dimension A should be
approximately 0.5 mm more than indicated in the table (for fl aring with R410A fl are tools)
to achieve the specifi ed fl aring. Use a thickness gauge to measure the dimension A.
Width across flats
flats
Pipe outside
diameter [mm (in.)]
Width across flats
of Flare nut [mm]
6.35 (1/4)
17
9.52 (3/8)
22
12.70 (1/2)
26
15.88 (5/8)
29
19.05 (3/4)
36
6.9.2. Bending pipes
• If pipes are shaped by hand, be careful not to collapse them.
• Do not bend the pipes in an angle more than 90°.
• When pipes are repeatedly bend or stretched, the material will harden, making it
diffi cult to bend or stretch them any more.
• Do not bend or stretch the pipes more than 3 times.
CAUTION
To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.
6.9.3. Pipe connection
CAUTION
Be sure to install the pipe against the port on the indoor unit correctly. If the centering
is improper, the fl are nut cannot tighten smoothly. If the fl are nut is forced to turn, the
threads will be damaged.
Do not remove the flare nut from the indoor unit pipe until immediately before
connecting the connection pipe.
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to
tighten the fl are nut correctly.
Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to
leak and generate hazardous gas if the refrigerant comes into contact with a fl ame.
Connect the piping so that the control box cover can easily be removed for servicing
when necessary.
In order to prevent water from leaking into the control box, make sure that the piping is
well insulated.
When the flare nut is tightened properly by your hand, hold the body side coupling
with a wrench, then tighten with a torque wrench. (See the table below for the fl are nut
tightening torques.)
9378533028-03_IM.indb 5
9378533028-03_IM.indb 5
2011-10-08 11:08:49
2011-10-08 11:08:49
AMP Air Conditioning
www.ampair.co.uk | [email protected]
