Installation and Operation
EDUS39-800-F9
28
FXZQ-M
8.
DRAIN PIPING WORK
Rig the drain piping as shown in figure and take measures
against condensation. Improperly rigged piping could lead to
leaks and eventually wet furniture and belongings.
1
Hanging bar
2
≥
1/100 gradient
(1) Install the drain pipes.
• Keep piping as short as possible and slope it downwards
so that air may not remain trapped inside the pipe.
• Keep pipe size equal to or greater than that of the con-
necting pipe (PVC pipe, nominal diameter 0.8 in, outside
diameter 1 in).
• Insert the drain hose into the drain socket up to the base,
and tighten the clamp securely within the portion of a grey
tape.
• Tighten the clamp until the screw head is less than 0.16 in
from the hose.
• Insulate the drain hose inside the building.
• If the drain hose cannot be sufficiently set on a slope, fit
the hose with drain raising piping (field supply).
• Make sure that heat insulation work is executed on the
following 2 spots to prevent any possible water leakage
due to dew condensation.
• Indoor drain pipe
• Drain socket
• Wrap the supplied sealing pad over the
clamp and drain hose to insulate.
1 Metal clamp (supplied with the unit)
2 Large sealing pad (supplied with the unit)
8-1
How to perform piping
(See figure 15)
1 Ceiling slab
2 Hanger bracket
3 Drain raising pipe
4 Raising section
5 Drain hose (supplied with the unit)
6 Metal clamp (supplied with the unit)
8-2
Precautions
Install the drain raising pipes at a height of less than 21 in.
Install the drain raising pipes at a right angle to the indoor
unit and no more than 11.5 in from the unit.
NOTE
The incline of attached drain hose should be 3 in or less so
that the drain socket does not have to stand additional
force.
To ensure a downward slope of 1:100, install hanging bars
every 3 to 5 ft.
If unifying multiple drain pipes, install the pipes as shown in
figure 10. Select converging drain pipes whose gauge is
suitable for the operating capacity of the unit.
1
T-joint converging drain pipes
2. After piping work is finished, check if drainage flows
smoothly.
Open the water inlet lid, add approximately 0.53 U.S. gal-
lons of water gradually and check the drainage flow.
Method of adding water. See figure 13.
1
Drain pipe
2
Service drain outlet with rubber plug. Use this outlet to
drain water from the drain pan.
3
Plastic container for pouring
NOTE
Drain piping connections
Do not connect the drain piping directly to sewage pipes
that smell of ammonia. The ammonia in the sewage
might enter the indoor unit through the drain pipes and
corrode the heat exchanger.
Keep in mind that it will become the cause of getting
drain pipe blocked if water collects on drain pipe.
When electric wiring work is finished
Check drainage flow during COOL running, explained in the
chapter "Test operation" on page 12.
When electric wiring work is not finished
Remove the switch box lid and connect the power supply
and remote controller to the terminals.
See figure 22.
1
Switch box lid
2
Remove the switch box lid (take off 2 screws)
3
Power supply terminal block
4
Remote controller terminal block
5
Remote controller wiring
Next, press the inspection/test operation button
on the
remote controller. The unit will engage the test operation
mode. Press the operation mode selector button
until
selecting fan operation
. Then, press the on/off button
. The indoor unit fan and drain pump will start up. Check
that the water has drained from the unit. Press
to go
back to the first mode.
Note that the fan also starts rotating.
Attach the switch box lid as before.
1
Metal clamp
(supplied with the unit)
2
Drain hose
(supplied with the unit)
3
Grey tape
(field supply)
3~5 ft
1
2
2
1
3
1
2
≤
0.16 in
TEST
TEST
Summary of Contents for FXZQ-M Series
Page 1: ...EDUS 39 800 F9_a AMERICAS FXZQ M 4 Way Ceiling Mounted Cassette Unit 2 2 ...
Page 3: ...External Appearance EDUS39 800 F9_a 2 FXZQ M 1 External Appearance FXZQ07 18M ...
Page 7: ...Dimensions EDUS39 800 F9_a 6 FXZQ M 3TW30724 3 FXZQ07 18M7VJU BYFQ60B8W1 BYFQ60B8W1U ...