Airwell DLS series Manual de instrucciones de instalación - Página 4

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Installation/Service Tooling for R410A

Gauge manifold

Charge hose

Electronic scale for

refrigerant charging

Torque wrench (nominal

dia. 1/2, 5/8)

Flare tool (clutch type)

Gauge for projection

adjustment

Vacuum pump adapter &

check valve

Gas leakage detector

Incidentally, the "refrigerant cylinder" comes with the refrigerant designation (R410A) and protector coating in the U.S's ARI specified rose colour (ARI colour code:

PMS 507). Also, the "charge port and packing for refrigerant cylinder" requires 1/2 UNF 20 threads per inch corresponding to the charge hose's port size.

CAUTION

R410A Air Conditioner Installation

THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT

(R410A) WHICH DOES NOT DESTROY OZONE LAYER. R410A

refrigerant is apt to be affected by impurities such as water, oxidizing

membrane, and oils because the working pressure of R410A refrigerant

is approx. 1.6 times of refrigerant R22. Accompanied with the adoption

of the new refrigerant, the refrigeration machine oil has also been

changed. Therefore, during installation work, be sure that water, dust,

former refrigerant, or refrigeration machine oil does not enter into the

new type refrigerant R410A air conditioner circuit. To prevent mixing

of refrigerant or refrigerating machine oil, the sizes of connecting

sections of charging port on main unit and installation tools are different

from those used for the conventional refrigerant units. Accordingly,

special tools are required for the new refrigerant (R410A) units. For

connecting pipes, use new and clean piping materials with high pressure

fittings made for R410A only.

ATTACHED ACCESORIES

Description

Amount

4each

As the working pressure is high, it is impossible to measure the working pressure using

conventional gauges. In order to prevent any other refrigerant from being charged, the port

diameters have been changed.

In order to increase pressure resisting strength, hose materials and port sizes have been

changed (to 1/2 UNF 20 threads per inch). When purchasing a charge hose, be sure to

confirm the port size.

As working pressure is high and gasification speed is fast, it is difficult to read the indicated

value by means of charging cylinder, as air bubbles occur.

The size of opposing flare nuts have been increased. Incidentally, a common

wrench is used for nominal diameters 1/4 and 3/8.

By increasing the clamp bar's receiving hole size, strength of spring in the tool has been

improved.

Used when flare is made by conventional flare tool.

Connected to a conventional vacuum pump. It is necessary to use an adapter to prevent

vacuum pump oil from flowing back into the charge hose. The charge hose connecting

part has two ports -- one for conventional refrigerant (7/16 UNF 20 threads per inch) and

one for R410A. If the vacuum pump oil (mineral) mixes with R410A a sludge may occur

and damage the equipment.

Exclusive for HFC refrigerant.

Name

Technician's installation manual

Instruction manual for remote control

Instruction manual for unit dispaly

Remote control including batteries

Remote control bracket

Central control display

Rubber mounting pads

Tie - Wraps

Dibbles - Screws - Washers

Drain elbow

Changes

Moreover, do not use the existing piping because there are some

problems with pressure fittings and possible impurities in existing

piping.

Changes in the product and components

In air conditioners using R410A, in order to prevent any other refrigerant

from being accidentally charged, the service port diameter size of the

outdoor unit control valve (3 way valve) has been changed. (1/2 UNF

20 threads per inch).

In order to increase the pressure resisting strength of the refrigerant

piping, flare processing diameter and opposing flare nuts sizes have

been changed. (for copper pipes with nominal dimensions 1/2 and

5/8).

In case of pipes welding please make sure to use dry Nitrogen inside

the pipes.

Use copper tube of spcial thickness for R410A: 1/4"-1/2" 0.8 mm

USE

Installation instructions

Operation instructions for remote

Operation instructions

Operating the air-conditioner

Hanging the remote control on the wall

Operating and main working display

Padding of the outdoor unit

Tightening the indoor and the outdoor units electrical cables

Installing bracket for remote control and central control display

Connecting drain hose to outdoor

5/8"-3/4" 1 mm

7/8"

1.1 mm