258
FDTN-H
(3) Hanging
¡
Arrange four sets of a hang bolt (M10 or M8) , a nut for it, a
plain washer and a spring washer on site.
When there is the ceiling
1. Make an 860 to 890 mm-square cutout on the ceiling.
Refer to the outside dimensions of packing cardboard container.
s
Align the center of ceiling cutout and the center of unit.
2. Decide the hang bolt position 675
×
780 in the case of FDT(N)
258 ~ 508, and 430
×
680 in the case of FDT(N) 208.
3. Use four hang bolts and fix them so that each bolt can resist the
pull out load of 50kgf.
4. Decide the length of hang bolt to approx. 70mm above the ceil-
ing surface.
5. After hanging in the unit, fix the attached level gauge and se-
cure the height of unit.
6. Use a transparent hose filled with water to check the levelness
of unit. (The maximum allowable height difference between
both ends of unit is 3mm.)
Request
¡
For the hang bolt whose length exceeds 1.3m, use the M10 size
hang bolt and moreover combine a diagonal member to the hang
bolt for reinforcement.
(4) Drain Piping
(a) Drain piping should always be in a downhili grade (1/50~1/100) and avoid riding across and elevation or making traps.
(b) When connecting the drain pipe to unit, pay sufficient attention not to apply excess force to the piping on the unit side. Also,
fix the piping at a point as close as possible to the unit.
(c) For drain pipe, use hard PVC general purpose pipe VP-25
(I.D.1") which can be purchased locally. When connecting, in-
sert a PVC pipe end securely into the drain socket before tight-
ening securely using the attached drain hose and clamp. Adhe-
sive must not be used connection of the drain socket and drain
hose (accessory).
(d) When consturcting drain piping for several units, position the
common pipe about 100 mm below the drain outlet of each
unit as shown in the sketch. Use VP-30 (11/4") or thicker pipe
for this purpose.
(e) Be sure to provide heat insulation to hard PVC pipes of indoor
placement.
(f) Do not ever provide an air vent.
(g) The height of the drain head can be elevated up to a point 700
mm ablve the ceiling and, when an obstacle exists in the ceil-
ing space, elevate the piping to avoid the obstacle using an
elbow or corresponding gadget. When doing this, if the stretch
for the needed height is higher than 500 mm, the back-flow
quantity of drain at the event of interruption of the operation
gets too much and it may cause overflow at the drain pan. There-
fore, make the height of the drain pipe within the distance given
in the sketeh below.
(h) Avoid positioning the drain piping outlet at a place where gen-
eration of odor may be stimulated. Do not lead the drain pip-
ing direct into a sewer from where sulfur gas may generate.
(i)
The purpose of drain hose is to absorb minute discrepancy of
the unit or the drain piping occurred when they are installed.
Therefore, when it is bent intentionally or used under expanded
condition, it may be damaged and result in water leakage.
Refrigerant piping
Drain
Level gauge
Hang bolt
Nut
Washer
Main
body
Spring
washer
Indoor unit
Hose
Fix the level gauge in alignment
with this face of supply air grill.
Adjust so that the level gauge surface and
the lower surface of ceiling are in matching.
Ceiling
member
Level gauge (insulation)
Supply air grill
Drain socket
Stage
difference
part
Drain hose
Pipe cover (large)
[for insulation]
(accessory)
VP25 joint
(field purchased)
Drain hose
(accessory)
Drain socket
Pipe cover (small)
[for insuation]
(accessory)
Adhesion
Pipe cover
[for insuation]
(field purchased)
VP25
(field purchased)
Clamp
(accessory)
Secure the elevation as high as possible
(approx. 100 mm)
A downhill grade of
1/100 or more
VP30
295~325 mm
100 mm or less
Drain hose
VP25 joint
(field purchased)
700 mm or less
¡
Good piping
Suspension
bolts
Heat
insulation
A downhill grade
of 1/100 or more
Air vent
Avoid riding across an elevation
Keep free from traps
Do not pipe under water
¡
Improper piping
A
FDT(N) 258~508 40~45
FDT(N) 208
45~47
Main unit
Summary of Contents for FDT208HEN-S
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