Carrier 38QCR018713 Installation Manual download pdf (Page 10)

ELECTRICAL WORK

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

C: Putting nut on

Remove flare nuts attached to indoor and

outdoor unit, then put them on pipe/tube

having completed burr removal.(not possible

to put them on after flaring work)

Flare nut

Copper tube

Fig.17

Fig.18

D: Flaring work

Firmly hold copper pipe in a die in the

dimension shown in the table below.

Caution

Align the center of the pipes.

Sufficiently tighten the flare nut with fingers,

and then tighten it with a spanner and torque

wrench as shown.

Tightening Connection

Excessive torque can break nut

depending on installation conditions.

Fig.19

Indoor unit tubing Flare nut Pipings

Electric safety regulations for the initial Installation

1. If there is serious safety problem about the

power supply, the technicians should refuse

to install the air conditioner and explain to the

client until the problem is solved.

2. Power voltage should be in the range of 90%~

110% of rated voltage.

3. The creepage protector and main power switch

with a 1.5 times capacity of Max. Current of the

unit should be installed in power circuit.

4. Ensure the air conditioner is grounded well.

5. According to the attached Electrical Connection

Diagram located on the panel of the outdoor

unit to connect the wire.

6. All wiring must comply with local and national

electrical codes and be installed by qualified

and skilled electricians.

An individual branch circuit and single receptacle

used only for this air conditioner must be available.

Electrical work

Outer diam.

(mm)

A(mm)

Max. Min.

6.35 1.3 0.7

9.52

1.6 1.0

12.7

1.8

1.0

12.7

1.8

1.0

Outer

diam.

Tightening

torque(N.cm)

Additional tightening

torque(N.cm)

6.35

1570

(160kgf.cm)

1960

(200kgf.cm)

4900

(500kgf.cm)

5390

(550kgf.cm)

12.7

9.52

2940

(300kgf.cm)

3430

(350kgf.cm)

NOTE: Thesupply voltage must be consistent with the rate

voltage of the air conditioner.

Minimum norminal cross-sectional area of conductors:

Rated current of appliance

(A)

Nominal cross-sectional area

(mm )

>3 and <6

>6 and <10

>10 and <16

>16 and <25

0.75

1.5

2.5

Model

Power supply

Input Rated Amp

(Switch/Fuse)

10A/15A

16A

220-240V~ 50Hz

220-230V~60Hz

＜12000Btu/h

≥12000Btu/h

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 29 30

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Carrier 38QCR018713 Installation Manual Page 10

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