Daikin FXVQ125MY1, Installation Manual

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6 English
<125-250 type>
Refrigerant
piping insulation
(Field supply)
Refrigerant piping
(Field supply)
More than 40 mm
More than 40 mm
Connection piping
(Accessory)
Gas piping
Liquid piping
<400 · 500 type>
Refrigerant
piping insulation
(Field supply)
More than 40 mm
More than 40 mm
Connection piping
(Accessory)
Gas piping
Liquid piping
7. DRAIN PIPING
7-1 INSTALL DRAIN PIPING
• Install drain piping is order to ensure proper drainage and
insulate piping in order to prevent condensation.
• Keep the piping length as short as possible and slope the
pipe with a gradient of 1/100 or more. Do not create any air
accumulated pocket in the piping.
• Use the pipe size equivalent or larger to the pipe
connection size of the unit.
• The drain connection is available from both (left and right)
sides.
• For the right side connection, change the drain plug from
right to left.
• For piping goes through the indoor, make sure to insulate
the indoor drain socket to the end of socket.
• When connecting the drain piping, insulate the drain plug
on the opposite side of drain piping connection completely
with the attached insulation.
• Always make a drain trap at the drain outlet.
Check
• After completion of drain piping, let water flow into the
drain pan and check for drain and water leakage from the
piping connection area.
Drain trap
Unit bottom line
Insulation for
drain plug
(accessories)
make a
drain trap
Drain trap
The end of the drain port
must be always kept in the
water to prevent backflow of
odor from the sewage.
Remove the released
paper, and make sure
to label on the unit.
Drain plug
Indoor
unit
Downward inclination
1/100 or more
50 mm or more
Drain plug cap
(accessories)
100 mm or more
Drain piping
(for Left side connection)
CAUTION
• The connection of the drain piping
Do not directly connect the drain piping to sewerage, which
odor may smell like ammonia.
Sewerage may contain it, which may pass through the
drain piping, and result in corrosion of the indoor unit heat
exchanger.
8. ELECTRIC WIRING
CAUTION
• Install earth leakage circuit breaker.
It is our obligation to mount earth leakage circuit
breaker in order to prevent accidents such as electric
shocks and/or fire.
• All field wiring and components must be installed by a
licensed electrician and must comply with relevant local
and national regulations.
• Use copper conductors only.
• Be sure to install an earth leakage breaker.
(Failure to install an earth leakage breaker may result in
electric shocks, or fire.)
• Always ground wires. (In accordance with national
regulations of the pertinent country.)
• Do not connect the ground wire to gas pipe, sewage pipe,
lightning rods, or telephone ground wires.
• Gas pipe: can explode or catch fire if there is a gas
leak.
• Sewage pipes: no grounding effect is possible if hard
plastic piping is used.
• Telephone ground wires and lighting rods: dangerous
when struck by lighting due to abnormal rise in
electrical potential in the grounding.
• The field wiring must be carried out in accordance with the
wiring diagrams and the instructions given below.
• If the fan rotates reversely, change the connection of two
power supply wires out of three.
• For connection to the terminal block, use ring type crimp
style terminal suitable for the wire size.
• Do not close the branch switch and overcurrent circuit
breaker until all the works are completed.
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