Installation manual

English 13
<PRECAUTIONS FOR DRAIN RAISING PIPING>
• Install the drain raising pipes at a height of less than 550 mm.
• Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit.
NOTE
• To ensure no excessive pressure is applied to the included drain hose (1), do not bend or twist when install-
ing. (This may cause leakage.)
• 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 if drainage flows smoothly.
• Add approximately 2000 cc of water slowly from the air outlet and check drainage flow.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Check drainage flow during COOL running, explained under ‘‘12. TEST OPERATION’’.
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
CAUTION
• Electrical wiring work should be done by a certified electrician.
• If someone who does not have the proper qualifications performs the work, perform the following after the
test run is complete.
•
Remove the terminal box lid. Connect the single phase power supply (SINGLE PHASE 50Hz 230V, 240V) to con-
nections No.1 and No.2 on the terminal block for wiring the units. Do not connect to No.3 of the terminal block for
wiring the units. (The drain pump will not operate.) Connect the ground wire firmly. When carrying out wiring work
around the terminal box, make sure none of the connectors come undone. Be sure to attach the terminal box lid
before turning on the power.
• After confirming drainage (Fig.24, Fig.25), turn off the power and remove the power supply.
• Attach the terminal box lid as before.
Ceiling slab
Metal clamp
(attached) (2)
Drain hose (1)
(accessory)
Drain raising pipe
Raising section
Drain hose (attached) (1)
750
Hanger bracket
Adjustable
(
550)
1 – 1.5 m
300 mm
200
Fig. 22
≥
≥
≥
To prevent air bubbles in the
drain hose part, keep it level
or slightly tilted up. Any
bubbles in the hose might
cause the unit to make noise
due to backflow when the
drain pump stops.
Level or
tilted
slightly up
≥
100 mm
T-joint converging drain pipes
Slope downwards at a gradient
of at least 1/100
Fig. 23
01_EN_3P184443-6.fm Page 13 Monday, July 3, 2006 12:04 PM