Daikin DX16SA0181XM, DX16SA0241XM, DX16SA0301XM, DX16SA0361XM, DX16SA0421XM Service Instructions Manual

Service Instructions

CONDENSING UNITCONDENSING UNIT

CONDENSING UNIT

CONDENSING UNITCONDENSING UNIT

MODELSMODELS

MODELS

MODELSMODELS

RR20AVAK(9)/DX16SA0181XMRR20AVAK(9)/DX16SA0181XM

RR20AVAK(9)/DX16SA0181XM

RR20AVAK(9)/DX16SA0181XMRR20AVAK(9)/DX16SA0181XM

RR25AVAK(9)/DX16SA0241XMRR25AVAK(9)/DX16SA0241XM

RR25AVAK(9)/DX16SA0241XM

RR25AVAK(9)/DX16SA0241XMRR25AVAK(9)/DX16SA0241XM

RR30AVAK(9)/DX16SA0301XMRR30AVAK(9)/DX16SA0301XM

RR30AVAK(9)/DX16SA0301XM

RR30AVAK(9)/DX16SA0301XMRR30AVAK(9)/DX16SA0301XM

RR36AVAK(9)/DX16SA0361XMRR36AVAK(9)/DX16SA0361XM

RR36AVAK(9)/DX16SA0361XM

RR36AVAK(9)/DX16SA0361XMRR36AVAK(9)/DX16SA0361XM

RR42AVAK(9)/DX16SA0421XMRR42AVAK(9)/DX16SA0421XM

RR42AVAK(9)/DX16SA0421XM

RR42AVAK(9)/DX16SA0421XMRR42AVAK(9)/DX16SA0421XM

This manual is to be used by qualified, professionally trained HVAC technicians only. The
manufacturer does not assume any responsibility for property damage or personal injury due
to improper service procedures or services performed by an unqualified person.

Copyright © 2015, 2017

RSDX6140000R1

APRIL 2017

Table of Contents

IMPORTANT INFORMATION ................................................... 2

PRODUCT IDENTIFICATION - MODEL TREES ..................... 5

PRODUCT DESIGN ................................................................ 7

SYSTEM OPERATION ............................................................. 9

TROUBLESHOOTING CHART ............................................. 10

SERVICING ........................................................................... 11

IMPORTANT INFORMATION

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that
during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is
familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments
and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE

BEGINNING REPAIRS.

IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS

WARNING

O

NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR

REPAIR (HEREINAFTER

MANUAL SHOULD SERVICE THE EQUIPMENT

BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM

IMPROPER SERVICE OR SERVICE PROCEDURES

ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY

RESULT

. IN

LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY

LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT

INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR OF THE EQUIPMENT

SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST, SERVICE OR

REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER

TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH

, “

SERVICE

”)

THE EQUIPMENT SPECIFIED IN THIS

. THE

MANUFACTURER WILL NOT

. IF

YOU SERVICE THIS UNIT, YOU

ADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE

. I

MPROPER

.

T

O PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,

DO NOT STORE COMBUSTIBLE MATER IALS OR USE GASOLINE OR OTHER

FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product.
For further assistance, please contact:

Daikin Air Conditioning Saudi Arabia LLC

P.O. Box 14949, Riyadh 11434, Saudi Arabia

Kind Abdullaziz St. - Alsahafa Area

Tel: [phone] l Fax: [phone]

Toll Free: 800 119 0909

Website: www.daikin-ksa.com l Email: [e-mail]

2

IMPORTANT INFORMATION

SAFE REFRIGERANT HANDLING

While these items will not cover every conceivable situation, they should serve as a useful guide.

WARNING

REFRIGERANTS ARE H EAVIER THAN AIR. THEY CAN "PUSH OUT" THE

OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE.

POSSIBLE DIFFICULTY IN BREATHIN G OR DEATH:

EVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE. BY

•

N

LAW, ALL REFRIGERANTS MUST BE RECLAIMED.

IF AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTIL ATE THE AREA

•

BEFORE BEGINNING WORK.

IQUID REFRIGERANT CAN BE VERY COLD. TO AVOID POSSIBLE FROST-

•

L

BITE OR BL INDNESS, AVOID CONTACT WITH REFR IGERANT AND WEAR

I

GLOVES AND GOGGLES.

SKIN OR EYES, SEEK MEDICAL HELP IMMEDIATELY.

A

LWAYS FOLLOW

•

AS POIS ONOUS GAS WI LL BE PRODUCED.

F LIQUID REFRIGERANT DOES CONTACT YOUR

EPA

REGULATIONS. NEVER BURN REFRIGERANT,

O AVO ID

T

WARNING

THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY ("EPA")

HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION AND
DISPOSAL OF RE FRIGERANTS IN TRODUCED INTO THI S UNIT. FAILURE TO

FOLLOW THESE REGULATIONS MAY HARM THE ENVIRONMENT AND CAN

LEAD TO THEH IMPOSITION OF SUBSTANTIAL FINES.

MAY VARY BY JURISDICTION.

EPA OFFICE.

LOCAL

SHOULD QUE STIONS ARISE, CO NTACT YOUR

THESE REGULATIONS

WARNING

TO AVOID POSSIBLE EXPLOSION:

EVER APPLY FLAME OR STEAM TO A REFRIGERANT CYLINDER. IF YOU

•

N

MUST HEAT A CYLINDE R FOR FASTER CHARGING, PARTIALLY IMMERSE

IT IN WARM WATER.

NEVER FILL A CYLINDE R MORE THAN 80% FULL OF LIQUID REFRIGERANT.

•

NEVER ADD ANYTHING OTHER THAN R-22 TO AN R-22 CYLINDER OR

•

R-410A TO AN R-410A CYLINDER . THE SERVICE EQUIPMENT USED MUST

BE LISTED OR CERTIF IED FOR THE TYPE OF REFRIGERANT USED.

TORE CYLINDERS IN A CO OL, DRY PLACE. NEVER USE A CYLIND ER

•

S

AS A PLATFORM OR A ROLLER.

WARNING

T

O AVOID POSSIBLE EXPLOSION, USE ONLY RETURNABLE (NOT DISPOSABLE)

SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM.

E

•

NSURE THE CYLINDER IS FREE OF DAMAGE WHICH COULD LEAD TO A

LEAK OR EXPLOSIO N.

E

•

NSURE THE HYDROSTATIC TEST DA TE DOES NOT EXCEED 5 YEARS.

E

NSURE THE PRESSURE RATING MEETS OR EXCEEDS 400 LBS.

•

W

HEN IN DOUBT, DO NOT USE CYLINDER.

WARNING

WARNING

SYSTEM CONTAMINANTS, IMPROPER SERVICE PROCEDURE AND/OR PHYSICAL

ABUSE AFFECTING HERMETIC COMPRESSOR ELECTRICAL TERMINALS MAY

CAUSE DANGEROUS SYSTEM VENTING.

The successful development of hermetically sealed refrigera­tion compressors has completely sealed the compressor's
moving parts and electric motor inside a common housing,
minimizing refrigerant leaks and the hazards sometimes
associated with moving belts, pulleys or couplings.

Fundamental to the design of hermetic compressors is a
method whereby electrical current is transmitted to the
compressor motor through terminal conductors which pass
through the compressor housing wall. These terminals are
sealed in a dielectric material which insulates them from the
housing and maintains the pressure tight integrity of the
hermetic compressor. The terminals and their dielectric
embedment are strongly constructed, but are vulnerable to
careless compressor installation or maintenance proce­dures and equally vulnerable to internal electrical short
circuits caused by excessive system contaminants.

T

O AVOID POSSIBLE INJURY, EXPL OSION O R DEATH, PRACTICE SAFE

HANDLING OF RE FRIGERA NTS.

In either of these instances, an electrical short between the
terminal and the compressor housing may result in the loss
of integrity between the terminal and its dielectric embed­ment. This loss may cause the terminals to be expelled,
thereby venting the vaporous and liquid contents of the
compressor housing and system.

A venting compressor terminal normally presents no danger
to anyone, providing the terminal protective cover is properly
in place.

If, however, the terminal protective cover is not properly in
place, a venting terminal may discharge a combination of

(a) hot lubricating oil and refrigerant

(b) flammable mixture (if system is contaminated

with air)

in a stream of spray which may be dangerous to anyone in the
vicinity. Death or serious bodily injury could occur.

Under no circumstances is a hermetic compressor to be
electrically energized and/or operated without having the
terminal protective cover properly in place.

See Service Section S-17 for proper servicing.

3

PRODUCT IDENTIFICATION

n

DX16SA0363XM

1 2 3,4 5 6 7,8,9 10 11,12 13 14

Brand

D - Daikin

AA

Engineering*

Minor Re visi on

Type

X AC R-410A
Z

HP R-410A

Engineering *

SEER

13 - 13 SEER

14 - 14 SEER

16 - 16 SEER

18 - 18 SEER

20 - 20 SEER

XA Asia Pacific
XC China XM Middle East

Compressor XE European Unio

S - Singl e Stage

T - Two Sta ge

D - Tandem

* Neither revis ion is used for order entry

or inventor y ma nagement

XL Latin Ame rica

XN European Union Non-ROHS

Major Revision

Export Region

R - Three Stage 1 - 208/230 V Single-Phase 60 Hz

V - Variable Speed 2 - 220/240 V Single-Phase 50 Hz

3 - 208/230 V Three-Phase 60 Hz

Feature Set 4 - 460 V Three-Phase 60 Hz

A - Base

ComfortNet

C ­L - ComfortNet Li te N - Nominal

D - Deluxe 018 - 1-1/2 Tons 042 - 3-1/2 Tons

TM

4-Wire Ready

S - Special 5 - 380/415 V Three-Phase 50 Hz
E - Export

Tonnage Nominal

024 - 2 Tons 048 - 4 Tons

030 - 2-1/2 Tons 060 - 5 Tons

036 - 3 Tons 061 - 5 Tons

(High Capacity)

Voltage

5

PRODUCT IDENTIFICATION

RR**AVAK/DX16SA***XM

Daikin Brand 16 SEER R410A Split System

Model/Rev Description

RR20A VAK/ DX160181XM/AA
RR25A VAK/ DX160241XM/AA
RR30A VAK/ DX160301XM/AA
RR36A VAK/ DX160361XM/AA
RR42A VAK/ DX160421XM/AA

RR20A VAK/ DX160181XM/AB
RR25A VAK/ DX160241XM/AB
RR30A VAK/ DX160301XM/AB
RR36A VAK/ DX160361XM/AB
RR42A VAK/ DX160421XM/AB

RR20A VAK9/ DX160181XM/AC
RR25A VAK9/ DX160241XM/AC
RR30A VAK9/ DX160301XM/AC
RR36A VAK9/ DX160361XM/AC
RR42A VAK9/ DX160421XM/AC

Initial rel ease of DAIKIN Brand 16 SEER, R410A Condense rs

The base valve has been modified to include a factory installed flowrator.
This new assembly replaced the flowrator and piston kit.

Ultra gold coated aluminum fin stock was replaced by blue coated
al uminum fin stock.

Split System Heat Pumps

6

PRODUCT DESIGN

This section gives a basic description of cooling unit opera­tion, its various components and their basic operation.
Ensure your system is properly sized for heat gain and loss
according to methods of the Air Conditioning Contractors
Association (ACCA) or equivalent.

CONDENSING UNIT

The condenser air is pulled through the condenser coil by a
direct drive propeller fan. This condenser air is then dis­charged out of the top of the cabinet. These units are
designed for free air discharge, so no additional resistance,
like duct work, shall be attached.

The suction and liquid line connections on present models
are of the sweat type for field piping with refrigerant type
copper. Front seating valves are factory installed to accept
the field run copper. The total refrigerant charge for a normal
installation is factory installed in the condensing unit.

The DX16 models are available in 1 1/2 through 3 1/2 ton sizes
and uses R-410A refrigerant. They are designed for 208/230
volt single phase and 380V 3-phase applications. Model
sizes, refrigerant, and electrical specs vary by country.
Please check with your local dealer for information related to
your country. All model units use the Copeland Scroll ZPK5
& ZPK6 series, which are specifically designed for R-410A
refrigerant and use 3MA POE oil which is NOT compatible
with mineral based lubricants like 3GS. "POE" oil must be
used if additional oil is required.

As this motion occurs, the pockets between the two forms
are slowly pushed to the center of the two scrolls while
simultaneously being reduced in volume. When the pocket
reaches the center of the scroll form, the gas, which is now
at a high pressure, is discharged out of a port located at the
center.

During compression, several pockets are being compressed
simultaneously, resulting in a very smooth process. Both the
suction process (outer portion of the scroll members) and the
discharge process (inner portion) are continuous.

Some design characteristics of the Compliant Scroll com­pressor are:

• Compliant Scroll compressors are more tolerant of liquid
refrigerant.

NOTE: Even though the compressor section of a Scroll
compressor is more tolerant of liquid refrigerant, contin­ued floodback or flooded start conditions may wash oil
from the bearing surfaces causing premature bearing
failure.

• Compliant scroll compressors perform "quiet" shutdowns
that allow the compressor to restart immediately without
the need for a time delay. This compressor will restart
even if the system has not equalized.

NOTE: Operating pressures and amp draws may differ
from standard reciprocating compressors. This informa­tion can be found in the unit's Technical Information
Manual.

COOLING

The refrigerant used in the system is R-410A. It is a clear,
colorless, non-toxic and non-irritating liquid. R-410A is a
50:50 blend of R-32 and R-125. The boiling point at atmo­spheric pressure is -62.9°F.

A few of the important principles that make the refrigeration
cycle possible are: heat always flows from a warmer to a
cooler body. Under lower pressure, a refrigerant will absorb
heat and vaporize at a low temperature. The vapors may be
drawn off and condensed at a higher pressure and tempera­ture to be used again.

The indoor evaporator coil functions to cool and dehumidify
the air conditioned spaces through the evaporative process
taking place within the coil tubes.

NOTE: The pressures and temperatures shown in the
refrigerant cycle illustrations on the following pages are for
demonstration purposes only. Actual temperatures and pres­sures are to be obtained from the "Expanded Performance
Chart".

Liquid refrigerant at condensing pressure and temperatures,
(270 psig and 122°F), leaves the outdoor condensing coil
through the drier and is metered into the indoor coil through
the metering device. As the cool, low pressure, saturated
refrigerant enters the tubes of the indoor coil, a portion of the
liquid immediately vaporizes. It continues to soak up heat and
vaporizes as it proceeds through the coil, cooling the indoor
coil down to about 48°F.

Heat is continually being transferred to the cool fins and tubes
of the indoor evaporator coil by the warm system air. This
warming process causes the refrigerant to boil. The heat
removed from the air is carried off by the vapor.

As the vapor passes through the last tubes of the coil, it
becomes superheated. That is, it absorbs more heat than is
necessary to vaporize it. This is assurance that only dry gas
will reach the compressor. Liquid reaching the compressor
can weaken or break compressor valves.

7

PRODUCT DESIGN

The compressor increases the pressure of the gas, thus
adding more heat, and discharges hot, high pressure super­heated gas into the outdoor condenser coil.

In the condenser coil, the hot refrigerant gas, being warmer
than the outdoor air, first loses its superheat by heat trans­ferred from the gas through the tubes and fins of the coil. The
refrigerant now becomes saturated, part liquid, part vapor and
then continues to give up heat until it condenses to a liquid
alone. Once the vapor is fully liquefied, it continues to give up
heat which subcools the liquid, and it is ready to repeat the
cycle.

8