Daikin UAA-ST3M Instruction Manual

INSTALLATION &
MAINTENANCE
MANUAL
AIR-COOLED CHILLER
(SINGLE SCREW COMPRESSOR)
UAA-ST3M
IM-UAA -0620(2)-DAIKIN
Part Number: C08019039757B

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⚠WARNING
Before starting the installation of the unit, please read this manual carefully. Starting up the unit is
absolutely forbidden if all instructions contained in this manual are not clear.
Key to symbols
Failure to comply with this instruction may damage the machine or affect its operation.
Note concerning safety in general or compliance with laws and regulations.
Note concerning electrical safety.
⚠WARNING
Electric shock hazard can cause personal injury or equipment damage. This equipment must be
properly grounded. Connection to, and service of, the MicroTech III control panel must be performed
only by personnel who are knowledgeable in the operation of this equipment.
⚠CAUTION
Static sensitive components. A static discharge while handling electronic circuit boards can cause
damage to the components. Discharge any static electrical charged by touching the bare metal inside
the control panel before performing any service work.
Never unplug any cables, circuit board terminal blocks, or power plugs while power is applied to the
panel.

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TABLE OF CONTENTS GUIDELINE
TABLE OF CONTENTS GUIDELINE II
1INTRODUCTION 1
General 1
Application 1
Nomenclature 2
2ABOUT SAFETY 3
Transportation 3
Lifting 3
Installation 4
3MAJOR COMPONENTS LOCATION 6
4WORKING PRINCIPLE AND TECHNICAL DATA 8
Working principle 8
Operating range 9
Chiller Physical Data 10
5HANDLING 11
Transportation 11
Receiving the machine 11
Lifting 11
6INSTALLATION 15
Installation and Foundation 15
Chiller Outline Dimension and Load Distribution 18
Chiller Piping 23
Electrical Installation 27
7MAINTENANCE 57
Daily Maintenance 57
About Refrigerant 57
Cleaning and Maintenance 58
Long Idle Period Maintenance 59
8SERVICE PROCEDURE 1

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1INTRODUCTION
General
IMPORTANT
•Maximum care should be taken to ensure correct installation and operation.
Correct maintenance of the unit is indispensable for its safety and
reliability. Contact Manufacturer's service team for maintenance.
Application
1.2.1 Purpose of the manual
The purpose of this manual is to allow the installer to carry out all required operations in order
to ensure proper installation of the machine, without causing any harm to people, animals and/or
objects.
All activities must be carried out in compliance with local laws and regulations.
1.2.2 Warning
This manual has been prepared as a technical support only. Daikin has prepared with the best of
their knowledge. No explicit or implicit warranty is provided about the completeness, accuracy
and reliability of its content. All data and specifications provided herein are subject to change
without prior notice from the manufacturer. Daikin specifically rejects any liability for any
direct or indirect damages, arose from or related to the use and/or interpretation of this manual.
All contents are Daikin copyright protected.
ATTENTION
This manual describes the features and procedures for UAA –cooling only series.
•All units are delivered with wiring diagram and Installation manual.
•WIRING DIAGRAMS AND DIMENSIONAL DRAWINGS MUST BE
CONSIDERED ESSENTIAL DOCUMENTS OF THIS MANUAL.
•If there are any incompatible between this manual and the two documents
mentioned above; please refer to the wiring diagram and dimensional
diagrams.

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Nomenclature
UAA 105 ST 3 M –F BB
Efficiency Class
:
BB - High Efficiency
Power Supply
:
F - 380 ~ 400V / 50Hz
Manufactured Country
:
M - Malaysia
Refrigerant Type
:
3 - R134a
Model
:
ST - Standard
Cooling Capacity
:
105 - 450 USRT
Chiller Name
:
UAA - Air cooled screw chiller

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2ABOUT SAFETY
Transportation
⚠WARNING
•Transportation must be carried out in compliance with local laws and regulations.
Lifting
⚠WARNING
•Lifting must be performed in accordance with the installation instructions in this
Manual. Manufacturer is not responsible for any equipment damage, personal
injury or death resulting from failing to comply with these requirements.
•The equipment must be lifted with the utmost attention and care. Avoid jolting
when lifting and lift the machine very slowly, keeping it perfectly level.
•It is prohibited to stay under the crane or equipment during lifting.
⚠CAUTION
•Lifting should be performed by experienced personnel who is familiar with the
provisions of law and local regulations, and who has been properly trained or has
experience with this type of equipment.
IMPORTANT
•It is advisable to add some insulation material between lifting ropes and machine
to avoid scratching the equipment.
⚠CAUTION
•The stability of the equipment during shipping must be ensured.
•Block equipment from sliding on lorries to prevent damage to the panels and base
frame. Avoid bumping, jolting and impacts during unloading and/or moving the
machine. Do not push or pull the equipment from any part other than the base frame.
Failure to follow above-mentioned instructions could cause serious damages for
which the manufacturer will not be held liable.

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Installation
Unit installation
⚠WARNING
Installation should be performed by experienced personnel. Avoid installing the equipment in a place
that could be dangerous during maintenance operations, such as (but not limited to) platforms without
parapets or railings, or areas not complying with the clearance requirements.
⚠CAUTION
•Installation must be performed in accordance with the installation instructions in
this Manual.
•If the unit operates cooling mode when ambient temperature is lower than 5°C
and wind speed is more than 10 m/s, please consult manufacturer.
IMPORTANT
•Install a strainer on the inlet to each heat exchanger. Failure to install a strainer
allows solid particles and/or welding slags to enter the heat exchanger. Installation
of a strainer with mesh size recommended by manufacturer (refer to page 16). The
manufacturer will not hold responsible for any damage to heat exchanger due to
blockage.
•All other water piping outside the chiller must be protected against freezing.
•Adjust the anti-vibration mountings beneath the equipment before connecting
water pipe.

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Electrical installation
⚠CAUTION
•All electrical connections to the machine must be carried out in compliance with
laws and regulations in force.
•All installation, operating and maintenance activities must be carried out by
qualified personnel.
•Please refer to the specific wiring diagram for the machine that you have
purchased, and which was sent with the unit.
•Should the wiring diagram not come with the machine, please contact your dealer
for further action.
•Use copper conductors only. Failure to use copper conductors could cause
overheating or corrosion at the connection points and damages the unit.
•To avoid interference, all control wires must be installed separately from the
power wires. Use separate electrical conduits for this purpose.
•Before servicing the machine in any way, open the general disconnecting switch
on the machine's main power supply.
•When the machine is off, but the disconnector switch is in the closed position,
unused circuits are live as well.
•Never open the terminal board box of the compressors before having opened the
unit's general disconnecting switch.
•In installations with power supply lines longer than 50 meters, inductive coupling
between phases and between phase and earth generates significant
electromagnetic field.
•In order to limit these phenomena, it is good practice to lay out the phase wires
symmetrically, as described in the figure:
•Chiller unit compressors are single-direction rotation compressors and can be damaged if
rotated in the wrong direction. For this reason, proper phasing of electrical power is
important. Terminal block indicator (R, S, T). R=L1, S=L2, T=L3

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3MAJOR COMPONENTS LOCATION
1 System (UAA105- UAA220)
A
C
B
D
D
E
F
G
H
I
C
Figure 1 Chiller Front View
Figure 2 Chiller View (1 System)