(2) After piping work is finished, check if drainage flows smoothly.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Add approximately 1 L of water slowly from the air outlet and check drainage flow.
(Refer to Fig.23)
• Check drainage flow during COOL running.
• Refer to the figure on the following after checking the draining of water, and mount the thermal insulation
material for drainage and thermal insulate the drain socket.
-� CAUTION ------------------------
• Do not apply external force to the float switch.
This may result in a malfunction.
Thermal insulation
material for drainage
(accessory)
Thermal insulation
material for drainage
(accessory)
Sealing pad (Large)
Be sure to lay the sealing
material on
Make sure that there
is no clearance.
Fig. 21
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 control box lid. Connect the single phase power supply (SINGLE PHASE 230V) to
connections 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 earth wire firmly. When
carrying out wiring work around the control box, make sure none of the connectors come undone. Be
sure to attach the control box lid before turning on the power.
• Put approximately 1 L of water into the drain pan through the blow-off mouth on the left-hand side of the
drain socket. Make sure not to pour water over the drain pump or any electric parts including those of the
drain pump.
• When the power is turned on, the drain pump will operate and you can check the draining of water
through the transparent part of the drain socket. (The drain pump will stop automatically in 10 minutes.)
After checking the draining of water, mount the thermal insulation material for drainage and thermal
insulate the drain socket.
• After confirming drainage
(Fig. 22, Fig. 23),
turn off the power and remove the power supply.
• Attach the control box lid as before.
-� CAUTION ------------------------
• Do not apply external force to the float switch.
• This may result in a malfunction.
• Do not touch the electronic ports other than the terminal block.
14