Allied ML14XP1-060 설치 지침 매뉴얼 - 페이지 3

{카테고리_이름} Allied ML14XP1-060에 대한 설치 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Allied ML14XP1-060 17 페이지. Split system heat pump r410a refrigerant

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STEP 2 – REFRIGERANT PIPING

IMPORTANT

If this unit is being matched with an approved line set

or indoor unit coil that was previously charged with

mineral oil, or if it is being matched with a coil which

was manufactured before January of 1999, the coil and

line set must be flushed prior to installation. Take care to

empty all existing traps. Polyol ester (POE) oils are used

in units charged with HFC-410A refrigerant. Residual

mineral oil can act as an insulator, preventing proper

heat transfer. It can also clog the expansion device

and reduce system performance and capacity. Failure

to properly flush the system per this instruction and the

detailed installation and service procedures manual will

void the warranty.

Flush the existing line set per the following instructions.

CAUTION - DO NOT attempt to flush and re-use existing

line sets or indoor coil when the system contains contam-

inants (i.e., compressor burn out).

If a new line set is being installed, size the piping per table 1.

TABLE 1

REFRIGERANT LINE SET – INCHES (MM)

Valve Field

Connections

Model

Liquid

Vapor

Line

-036

3/8 in.

7/8 in.

-042

(10 mm)

(22 mm)

-048

3/8 in.

1-1/8 in.

-060

(10 mm)

(28 mm)

NOTE - Some applications may require a field-provided 7/8" to

1-1/8" adapter.

NOTE - When installing refrigerant lines longer than 50

feet, refer to the Refrigerant Piping Design and Fabrica-

tion Guidelines manual.

WARNING

When using a high pressure gas such as

nitrogen to pressurize a refrigeration or air

conditioning system, use a regulator that can

control the pressure down to 1 or 2 psig (6.9

to 13.8 kPa).

Recommended Line Set

Liquid

Vapor

L15 Line Sets

Line

L15-65

3/8 in.

7/8 in.

15 ft. - 50 ft.

(10 mm)

(22 mm)

(4.6 m - 15 m)

3/8 in.

1-1/8 in.

Field Fabricated

(10 mm)

(28 mm)

Refrigerant can be harmful if it is inhaled. Refrigerant

must be used and recovered responsibly.

Failure to follow this warning may result in personal

injury or death.

Fire, Explosion and Personal Safety hazard.

Failure to follow this warning could result in

damage, personal injury or death.

Never use oxygen to pressurize or purge

refrigeration lines. Oxygen, when exposed

to a spark or open flame, can cause fire and/

or an explosion, that could result in property

damage, personal injury or death.

Polyol ester (POE) oils used with HFC-410A refrigerant

absorb moisture very quickly. It is very important that the

refrigerant system be kept closed as much as possible.

DO NOT remove line set caps or service valve stub caps

until you are ready to make connections.

Some scroll compressors have an internal vacuum

protector that will unload scrolls when suction pressure

goes below 20 psig. A hissing sound will be heard when

the compressor is running unloaded. Protector will reset

when low pressure in system is raised above 40 psig.

DO NOT REPLACE COMPRESSOR.

Page 3

WARNING

IMPORTANT