AirStage AUXM018GLAH Instrukcja instalacji - Strona 6
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Drukuj stronę4.3.3 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)