Daikin FXKQ25MVE, Installation Manual

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6 English
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the
unit without a torque wrench, you may follow the installation
method mentioned below.
After the work is finished, make sure to check that there is
no gas leak.
When you keep on tightening the flare nut with a spanner, there
is a point where the tightening torque suddenly increases. From
that position, further tighten the flare nut the angle shown below:
Table 4
7. DRAIN PIPING WORK
〈〈 〈〈 〈〈 〈〈
Rig the drain pipe as shown below and take measures
against condensation. Improperly rigged piping could lead
to leaks and eventually wet furniture and belongings.
〉〉 〉〉 〉〉 〉〉
(1) Carry out the drain piping
• Keep piping as short as possible and slope it downwards
so that air may not remaine trapped inside the pipe.
• The diameter of the drain pipe should be greater than or
equal to the diameter of the connecting pipe (vinyl tube;
pipe size: 25 mm; outer dimension: 32 mm).
• Use the drain hose and metal clamp. Insert the drain
hose into the drain socket, up to the white tape.
Tighten the metal clamp until the screw head is less than
4 mm from the hose.
CAUTION
Setting the unit at an angle opposite to the drain piping
might cause leaks.
• Wrap the sealing pad over the clamp and drain hose to
insulate.
• Insulate the drain hose inside the building.
While referring to the figure on the right, insulate the
clamp and drain hose with the large sealing pad.
• If the drain hose cannot be sufficiently set on a slope,
execute the drain raising piping.
• Secure a downward gradient of 1/100 or more for the
drain pipe. To accomplish this, mount supporting brackets
at an interval of 1 - 1.5 m.
〈〈〈〈
Precautions when doing drain-up piping work.
〉〉〉〉
• Make sure the drain-up piping is at most 330 mm high.
• Stand the drain-up piping horizontally, and make sure it is
not further than 300 mm from the base of the drain
socket.
• Use the following outline if laying concentrated drain pip-
ing.
• If converging multiple drain pipes, install according to the
procedure shown below.
Select converging drain pipes whose gauge is suitable for the
operating capacity of the unit.
(2) After piping work is finished, check drainage flows
smoothly.
• Open the inspection opening, add approximately 1liter of
water slowly into the drain pan and check drainage flow.
NOTE
• Use the drain outlet for maintenance to drain water from the
drain pan.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Check drainage flow during COOL running, explained under
“TESTOPERATION”.
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
• Remove the electric parts box lid, connect a power supply
and remote controller to the terminals.
(Refer to the
HOW TO CONNECT WIRINGS (P.7))
Pipe size
Further tightening
angle
Recommended arm length
of tool
φ
6.4 (1/4”) 60 to 90 degrees Approx. 150mm
φ
9.5 (3/8”) 60 to 90 degrees Approx. 200mm
φ
12.7 (1/2”) 30 to 60 degrees Approx. 250mm
φ
15.9 (5/8”) 30 to 60 degrees Approx. 300mm
Metal clamp
Drain hose
Tape
≤
4mm
Large sealing pad
Metal clamp
(accessory)
(accessory)
Ceiling slab
300 1-1.5 m
Support bracket
Adjustable
( 330)
500
170
Drain-up piping
Riser
Drain hose (accessory)
(length: mm)
Metal clamp
(accessory)
≥
100mm
T-joint converging drain pipes
Inspection opening
Portable pump
Bucket
Drain outlet for maintenance
(with rubber plug)
01_EN_3P086156-8F.fm Page 6 Wednesday, March 19, 2003 6:55 PM