Outdoor Wire Connection; Install The Outdoor Unit; Install The Drain Pipe For Outdoor Unit; Refrigerant Piping Work - Carrier 42QHC009DS Installationsanleitung

3. OUTDOOR UNIT INSTALLATION

3.3 OUTDOOR WIRE CONNECTION

Remove the electrical cover and cable clamp by loosening the screws.
Connect wires to the outdoor terminal block by same sequence to indoor unit.
Electric cover
Wire downwards to prevent
water entering control box.

3.4 INSTALL THE OUTDOOR UNIT

Before installation, check strength and horizontality of the base so that abnormal sound does not generate.
Fix the base firmly with anchor bolts (M10) to prevent it from collapsing.
Install the foundation and vibration-proof rubbers to directly support the bottom surface of the fixing leg that
is in contact with the bottom plate of the outdoor unit.
≥100mm
Mortar Hole (Φ100mm x Depth 150mm)

3.5 INSTALL THE DRAIN PIPE FOR OUTDOOR UNIT

Connect the drain outlet with an extension drain hose
Fit the gasket onto drain outlet.
Insert the drain outlet into the base pan hole of outdoor unit, and rotate 90 degree to securely assemble them.
Drain Outlet
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Terminal Block
S
L N
Cable Clamp
Outdoor unit
Vibration-proof rubber
Anchor bolt (M10)
Drainage (Wide 100mm x Depth 150mm)
Base pan hole
of outdoor unit
Gasket
Drain hose
(Field supply)

4. REFRIGERANT PIPING WORK

CAUTION
C
heck if the height difference between indoor unit & outdoor unit and the total length of refrigerant pipe meet
system requirement.
R
efrigerant piping work follows the indoor unit and outdoor unit installation, connect the pipe at the indoor side first,
then the outdoor side.
A
lways keep ends of tubing sealed by placing a cap or covering with tape during installation and do NOT remove
them until you are ready to connect the piping.
B
e sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping may
cause condensation or burns if touched.
When the outdoor unit is the top position and the difference of level is over 10m, it is recommended that set
a oil return bend every 5~8m in the gas pipe. The radius of oil reture bend should be over than 10cm.

4.1 FLARING

NOTE
Tools required for flaring are pipe cutter, reamer, flaring
tool and pipe holder.
4.1.1 Using a pipe cutter to cut the pipe to the requested
length. Ensure that the cut edge remains at 90° with
the side of the pipe.
Oblique Rough Burr
90
4.1.2 Use a reamer to remove burrs with the cut surface
downward so that the chips do not enter the pipe.
4.1.3 Carry out flaring work using flaring tools as below.
A(mm)
Outside diameter
90 ° ± 4
Max Min
Φ6.35mm 8.7 8.3
A
Φ9.52mm 12.4 12.0
R0.4~0.8
Φ12.7mm 15.8 15.4
Φ15.88mm 19.0 18.6
Φ19.05mm 23.3 22.9
4.1.4 Check if the flaring is properly made. See incorrectly
flared pipes sample below.
Inclined Damaged Surface Cracked Uneven Thickness
CAUTION
In case of needing brazing, work with Nitrogen gas blowing.
Improper torque will cause flare damage or gas leaks.

4.2 PIPING WORK

4.2.1 Align the center to tighten the flare nut and finish
connection using two wrenches.
Flare nut
Wrench
Torque wrench
Tubing size Torque
Φ6.35mm
18 ~ 20 N.m
Φ9.52mm
25 ~ 26 N.m
Φ12.7mm 35 ~ 36 N.m
Φ15.88mm 45 ~ 47 N.m
65 ~ 67 N.m
Φ19.05mm
4.2.2 Select the appropriate insulation material for refrigerant
pipe. (Min. 10mm, thermal insulating foam C)
Use separate thermal insulation pipes for gas & liquid pipes.
The thickness above is a standard of the indoor temperature
of 27°C and humidity of 80%. If installing in an unfavorable
conditions such as near bathrooms, kitchens, and other similar
locations, reinforce the insulation.
Insulation's heat-resistance temperature should be more than
120°C.
Use the adhesives on the connection part of insulation to
prevent moisture from entering.
Repair and cover any possible cracks in the insulation, specially
check the bent part or hanger of pipe.
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