AirStage AUXK018GLAH 설치 매뉴얼 - 페이지 6

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4.3.3 Pipe connection

Be sure to install the pipe against the port on the indoor unit and the outdoor unit cor-

rectly. If the centering is improper, the flare nut cannot tightened smoothly. If the flare

nut is forced to turn, the threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before connect-

ing the connection pipe.

Do not use mineral oil on flared part. Prevent mineral oil from getting into the system as

this would reduce the lifetime of the units.

Hold the torque wrench at its grip, keeping it at a right angle with the pipe, in order to

tighten the flare nut correctly.

(1) Detach the caps and

plugs from the pipes.

Connection pipe

(2) Center the pipe against

(Liquid)

the port on the indoor

unit, and then turn the

flare nut by hand.

(3) When the flare nut is

tightened properly by

your hand, hold the body

side coupling with a

separate spanner, then

tighten with a torque

wrench. (See the table

below for the flare nut

tightening torques.)

Flare nut [mm (in)]

6.35 (1/4) dia.

9.52 (3/8) dia.

12.70 (1/2) dia.

15.88 (5/8) dia.

19.05 (3/4) dia.

4.4. Installing heat insulation

After checking for gas leaks (refer to the Installation Manual of the outdoor unit), perform

this section.

Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do

so may cause water leaks.

After checking for gas leaks, insulate by wrapping insulation around the 2 parts (gas and

liquid) of the indoor unit coupling, using the Coupler heat insulation.

After installing the Coupler heat insulation, wrap both ends with vinyl tape so that there is

no gap.

Cable tie (Large)

(Accessories)

Body

Be sure to overlap

the insulation

Must fit tightly against body without any gap.

5. INSTALLING DRAIN PIPES

Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat ex-

change erosion may occur)

Insulate the parts properly so that water will not drip from the connection parts.

Check for proper drainage after the construction by using the visible portion of transpar-

ent drain port and the drain piping final outlet on the body.

En-5

CAUTION

Connection pipe (Gas)

Tighten with 2

wrenches.

Flare nut

Torque wrench

Connection pipe

Indoor unit pipe

(Body side)

Tightening torque [N·m (kgf·cm)]

16 to 18 (160 to 180)

32 to 42 (320 to 420)

49 to 61 (490 to 610)

63 to 75 (630 to 750)

90 to 110 (900 to 1,100)

CAUTION

Coupler heat

insulation

(Accessories)

No gap

Coupler heat

insulation

CAUTION

WARNING

Do not apply adhesive agent on the drain port of the body. (Use the attached drain hose

and connect the drain piping)

• Install the drain pipe with downward gradient (1/100 to 1/50) and so there are no rises or

traps in the pipe. Unsmooth draining caused by accumulated water flow in the pipe may

cause clogged drain.

• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32 mm].

• When the pipe is long, install supporters.

• Do not perform air bleeding. Drainage may

be blown out.

• If it is impossible to have sufficient gradient of

pipe, perform drain lift-up.

PROHIBITED:

Holding wrench

When lifting up drain:

• Height of inclined pipe should be less than 850 mm from the ceiling. A rise dimension

over this range will cause leakage.

• Lift up the pipe vertically at the position of 300 mm or less from the unit.

Working procedure

(1) Install the attached drain hose to the drain port of the body. Install the hose band

from the top of the hose within the graphic display area. Secure firmly with the hose

band.

(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25) which is prepared

on site or elbow socket. (Apply color adhesive agent evenly until the gauge line and

seal)

(3) Check the drainage. (See separate diagram)

(4) Install the heat insulation.

(5) Use the attached heat insulation to insulate the drain port and band parts of the body.

Install the knob

faces upward

Attached drain hose

heat insulation

(Accessories)

CAUTION

Drain pipe

Hanging fittings

VP25 (O.D. 32 mm)

Downward gradient 1/100 to 1/50

Trap

Rise

300 mm or less

VP25 (O.D. 32 mm)

local arrangement

VP30 (O.D. 38 mm) or more

850 mm or less

Downward gradient 1/100 to 1/50

Attached hose band

(Accessories)

Pipe size

VP25 (O.D. 32 mm)

1.5 to 2 m

Air bleeding

Downward gradient

1/100 to 1/50

850 mm or less

Horizontal or

upward gradient

Locally arranged

vinyl pipe

Attached drain hose

(Accessories)

Attached heat insulation

(Accessories)