Uniflair TDAR 722A, TDAR 922A, TDAR 511A, TDAR 721A, TDAR 611A Installation Manual
...
LEONARDO EVOLUTION
INSTALLATION MANUAL
LEONARDO EVOLUTION
VERSION: 1.7
DATE: FEBRUAR Y 2010
LANGUAGE: ENGLISH
2
VERSION: 1.7 DATE: FEBRUARY 2010
UNIFLAIR SPA POLICY IS ONE OF CONTINUOUS TECHNOLGICAL INNOV A TION AND THE COMP ANY
THEREFORE RESERVES THE RIGHT TO AMEND ANY DA TA HEREIN WITHOUT PRIOR NOTICE.
GB
3
GENERAL INSTRUCTIONS 4
Information contained in the manual 4
Symbols 4
Storage 4
Storage after use 4
Disposal 4
Disposal of the machine 4
SAFETY 6
General Instructions 6
Warning for lifting and transportation 6
Warnings for installation 6
Intended use 6
Warnings for use 6
Safety during maintenance work 6
INTRODUCTION 7
Presentation of the system 7
LEONARDO EVOLUTION - DIRECT EXP ANSION 10
T echnical characteristics 10
Operating description 13
Name and description of the principle components 14
Checks to be made on delivery 17
Unloading the unit 17
Characteristics of the installation area 17
Positioning of the unit 17
Door opening and removal of the panels 18
Door opening 18
Internal protection panels 19
Electrical connections 20
Connection to the drains 21
Connection to the gas drain 21
Refrigerant connections on air cooled units 22
Choosing the diameter of the discharge tube 22
R407C 23
R410A 24
BACKFLOW LINE DIMENSIONING (LIQUID) 27
T ype of oil recommended with COPELAND
compressors 29
Type of oil recommended with MANEUROP
compressors 29
Type of oil recommended with SANYO compressors 29
Type of oil recommended with Scrolltech HCJ 072-HLJ
083 compressors 29
Connection for water cooled units 30
MANUAL ST ART UP AND SHUT DOWN OF THE UNIT 31
SETTING AND ADJUSTMENT 32
Selecting the power supply of the fans 32
Setting the regulation and safety devices 35
Setting the pressostatic valve (optional on chilled water
cooled models only) 3 5
Setting the air flow sensor 35
Setting the dirty filter sensors 35
MAINT ANENCE 36
Three-monthly checks 36
Six-monthly checks 36
Annual checks 36
Checks to be performed every sixty months 36
Cleaning and repalcing the filters 36
Troubleshooting 38
LEONARDO EVOLUTION - CHILLED WA TER 42
T echnical characteristics 42
Operating description 43
Name and description of the principle components 44
Checks to be made on delivery 46
Unloading the unit 46
Characteristics of the installation area 46
Positioning of the unit 46
Opening of the door and removal of the panels 47
Internal protection panels 48
Electrical connections 49
Connection to the water drain 50
Hydraulic connections 51
Filling the hydraulic circuit 51
Filling the primary circuit 51
Filling the hydraulic circuits of the conditioners 51
MANUAL ST ART UP AND SHUT DOWN OF THE UNIT 52
SETTING AND ADJUSTMENT 53
Selecting the power supply of the fans 53
Setting the regulation and safety devices 57
Setting the air flow sensor 58
Setting the dirty filter sensors 58
MAINTENANCE 58
Three-monthly checks 58
Six-monthly checks 58
Annual checks 58
Cleaning and replacing the filters 59
Servomotor and chilled water valve 60
Servomotor and hot water valve 60
Troubleshooting 61
LEONARDO EVOLUTION ENERGY SA VING 63
T echnical characteristics 63
Operating description 64
Name and description of the principle parts 65
LEONARDO EVOLUTION TWIN-COOL 69
T echnical characteristics 69
Operating description 71
Name and description of the principle components 72
ACCESSORIES 7 7
Humidifier 77
Operating principle 78
Feed water 78
Connections 78
Maintenance 79
Electric heaters 8 0
T emperature and humidity sensor 8 1
Connection to fresh air intake 82
Maintenance 83
Discharge temperature threshold sensor (only on
CHILLED WA TER models) 83
Contents
4
GENERAL INSTRUCTIONS
Information contained in the manual
The present manual describes the Leonardo Evolution
conditioning units. It supplies general information and safety
instructions, unit transportation and installation information,
as well as necessary information about how to use the units.
It is an integral part of the product.
The descriptions and illustrations in this manual are unbinding;
"Uniflair S.p.A." reserves the right to make any alterations it
sees fit in order to improve the product without having to update
this document.
The illustrations and images in this manual are examples
only and may differ from practical situations.
Symbols
The following graphic and linguistic symbols have been used
in this manual:
WARNING! This message may appear before
certain procedures. Failure to observe this
message may cause damage to equipment.
WARNING! This message may appear before
certain procedures. Failure to observe this
message may cause injury to the operators and
damage the equipment.
Storage
The following conditions must be respected should the unit
require storing for a given period of time:
The packing must be kept intact.
The place of storage must be dry (<85% R.H.) and protected
against the sun (temperature <50°C).
Storage after use
The unit must be packaged when stored for a long time.
Disposal
The unit is mainly made of recyclable materials which should
be separated from the rest of the unit before it is disposed.
When disposing of the gas and oil inside the refrigerating
circuit, consult a specialist company.
Disposal of the machine
The following instructions deal with the disposal of UNIFLAIR
machines.
The procedures described below are guidelines only , provided
to make the machine disassembling easier. The purpose of
these operations is to achieve homogeneous material
quantities for disposal or recycling.
These instructions are followed by a list of the possible typical
CER 2002 codes to allow an easier disposal of the machine
parts.
WARNING! Observe the safety precautions at
work wearing the suitable individual protection
devices (IPD) and using the appropriate
equipments.
WARNING! Maintenance and service operations
(disassembling included) must be performed by
qualified and expert personnel, aware of the
essential precautions.
PRELIMINARY OPERATIONS
Power supply and data processing system:
• Turn the machine off and unplug it from the power supply
and from the communication system.
WARNING! The circuit s can be pressurised; any
maintenance and service operation must only
be carried out by expert and qualified personnel,
aware of the essential safety precautions.
WARNING! The machine can contain hot water:
adopt all of the essential safety cautions.
Hydraulic circuit:
• Drain the hydraulic circuit and disconnect the hydraulic
line.
Refrigerating circuit:
• Purge the refrigeration system with suitable recovery
equipments to avoid gas leakage in the environment.
DISASSEMBLING THE MACHINE
The following paragraphs describe the main macrocomponents
to facilitate the disassembling, disposal and recycling of
materials with appropriate features.
T o disassemble the machine properly, follow the guidelines
provided below.
• ELECTRICAL PANEL
Remove the electrical panel and dispose its parts
following the procedures provided by the relevant
standards. The models equipped with a "clock board" in
the electrical panel have a service battery which must
be disposed separately .
- Materials: electronic parts, electrical cables, metal and
plastic supports, batteries.
• COVER PANELS
Remove the metal cover and protection panels of the
machine.
The panels can be made of polypaired materials, that is
insulating material together with metal. In this case,
separate the different elements.
- Materials: galvanized sheet, aluminium, soundproof
panels: expanded polyurethane, thermoinsulating
panels: mineral wool.
5
• AIR FILTERS
Remove the air filters.
- Materials: metallic net, synthetic fibre.
• FINNED COIL
Remove the finned coils from the machine.
- Materials: copper, aluminium, steel.
• HUMIDIFIER
If a humidifier is installed, remove it.
- Materials: polypropylene, iron materials.
• ELECTRO-MECHANICAL PARTS
Find and remove valves, electro-mechanical and
electronic parts (three-way valves, sensors, etc.) from
the machine.
• RESISTANCES
Remove the resistances if they are installed.
- Materials: aluminium, inseparable copper + magnesium
oxide.
• PIPES AND PARTS OF THE REFRIGERATING
CIRCUIT
Find the connection pipes installed in the machine and
separate them from the other elements.
Pipes can be caulked: in this case, before recovery, separate the insulating material from the metal pipe.
Even the elements of the refrigerating circuit are
considered as pipes: joints or valves.
- Materials: copper, brass, cast iron, steel and plastic.
• PUMP
Remove the pump from the machine.
- Materials: pump.
• CONDENSER
Remove the condenser, if inst alled.
The condenser contains the elements of a machine,
equipped with a small electrical panel, fans and a thermal
exchange battery, usually characterized by aluminium
structure and feet made of varnished steel.
- Materials: electrical elements, aluminium, steel
(varnished).
• BRAZED PLATE EXCHANGER
If installed, remove the brazed plate exchanger.
- Materials: INOX AISI braze welding, with an alloy
containing a large amount of silver.
• FANS
Remove the fans. Disassemble the metal frame and
proceed with the recycling of the metal alloy .
- Materials: electro-mechanical elements, iron wrecks.
WARNING! The fans of some machine models
are integral part of the carrying structure.
Removing the fans can compromise the stability
of the frame. We recommend to pay attention
during disassembling operations.
• COMPRESSORS AND LIQUID SEPARA TORS
WARNING! Pay attention to oil contained in the
compressors. Avoid any loss of oil during
operations. If possible, dispose of oil and
compressors separately .
Finally remove the liquid separators and the compressors
from the machine base.
- Materials: liquid separators and compressors
• METAL BASE
Proceed with the recycling of the metal base.
- Materials: galvanised sheet.
WARNING! Waste deriving from machine
disassembly must be disposed of and classified
according to CER codes only consulting
authorised and specialist companies.
The following chart contains a partial list of the typical CER
codes applied to waste deriving from disassembling, so it
must be considered just as an indication.
STNEMELE SEDOC2002REC
selbaclacirtcelE114071
slairetamcitsalP911061
stroppuslateM711061
teehsdesinavlaG704071
muinimulA2
04071
tencillateM504071
erbifcitehtnyS302051
reppoC104071
ssarB104071
noritsaC504071
leetS704071
saggnitaregirfeR10
6041
yrettaB406061
lacinahcem-ortcele,spmuP
srosserpmoc,stnemele
409071
6
SAFETY
General Instructions
WARNING! Removal of, or tampering with,
safety devices is a violation of EUROPEAN
SAFETY ST ANDARDS.
WARNING! During installation authorised
personnel must wear individual safety devices.
Uniflair S.p.A will only consider itself responsible for the safety ,
reliability and performance of the machine if:
• repair work has only been carried out by authorised
personnel;
• the electric installation conforms to the standards currently
in force;
• the devices are used in conformity with the relative
instructions.
Carefully read this instruction manual before carrying out any
kind of use or maintenance work on the units.
Installation, maintenance and use must be carried out
respecting all of the work safety standards.
The operator responsible for the above mentioned services
must be suitably specialised and possess expert knowledge
of the devices.
Uniflair S.p.A refuses all responsibility for damage to people
or objects due to the inobservance of the safety standards.
Warning for lifting and transportation
Lifting and transportation of the units must be carried out by
specialised personnel as described in the relative paragraphs.
The load must always be solidly anchored to the bearing
element of the lifting equipment and means of transport. Noone must remain near the suspended load, nor in the working
area of the crane, forklift truck or any other lifting equipment
or means of transport. Adopt all of the cautions provided by
the relevant safety standards, in order to prevent any possible
damage to people or objects.
Warnings for installation
Any type of work on the electrical installation must only be
carried out by specialised technicians who are experts in
this field.
Specialised technical personnel must use appropriate
equipment when checking the grounding of devices.
Installation may only take place in locations where there is
NO public access.
Intended use
Leonardo Evolution air conditioning units have been designed
and produced to carry out air conditioning, within the limits
and methods described in the present manual. The air
conditioners must be used exclusively in internal
environments.
No modifications may be made to the units or their parts
without explicit written consent from Uniflair S.p.A.
Warnings for use
Only use the machinery for the purpose for which it was
designed and manufactured.
Environmental limits for use
The environmental conditions for the use of Leonardo air
conditioners are fall within the following values:
• Tmin=18°C • Tmax=30°C
• %rHmin=30% • %rHmax=70%
Safety during maintenance work
All repair work must be carried out by professionally qualified
personnel authorised by Uniflair S.p.A.
Unplug the machine form the power supply before starting
any maintenance work.
While drawing up this manual, we have considered all of the
operations which are part of normal maintenance operations.
N.B. Do not carry out any work which has not been specified
in this manual.
7
AIR FLOW
In the LEONARDO EVOLUTION conditioners, the air can flow upwards or downwards (UPFLOW / DOWNFLOW).
UPFLOW
Upflow units (with upwards air discharge) are designed to distribute the air through a system of ducts or by means of a false
ceiling. Air intake is usually through the front of the unit, but versions are also available with air intake through the rear or the
base of the unit.
INTRODUCTION
Presentation of the system
The Leonardo Evolution™ precision air conditioners are designed for environments which are characterised by the presence
of highly technologically advanced equipment: telecomms and internet centres, data processing rooms and any type of
environment which is characterized by high concentrations of power.
The Leonardo Evolution series consists of 4 types of conditioners:
• Direct expansion
• Chilled water
• Energy Saving
• Twin-Cool
DOWNFLOW
Downflow units (with downwards air discharge) handle large volumes of air which are distributed uniformly into the environment
by means of a void under a raised access floor. The air enters the unit directly from the environment, or through a ventilated
or false ceiling.
8
Identifying prefix of the Leonardo family
Air discharge
U = Upflow (upwards discharge)
D = Downflow (downwards discharge)
Operating typology
C = Chilled water units
A = Air cooled direct expansion units
W = Water cooled direct expansion units
T = Air cooled twin cool unit s
D = Water cooled twin cool units
E = Energy saving units
Fan typology
V = Radial Electronically Commutated fans
R = Radial fans
MODELS
The code which distinguishes the models is composed of 4 characters:
IDENTIFICA TON PLA TE
The units can be identified by the identification plate which is placed in the electrical panel of the machine. The model and
any eventual accessories which are installed are indicated by an "X" in the corresponding box
The plate carries the following data:
• Model and series number of the machine.
• Type of power supply .
• Power absorbed by the unit and the single components.
• Current absorbed by the unit and the single components.
• The set points of the cooling circuit pressostatic valve and safety valve.
• Type of refrigerant.
• Loading or pre-loading of each cooling circuit.
Indicative cooling capacity
Number of compressors installed
Number of cooling circuits
Power supply voltage
A = 400 V / 3Ph (+N) / 50 Hz
B = 230 V / 1 Ph / 50 Hz
TDAV1422A(H) TDEV1422A(H)
SERIAL No.
TUAV1422A(H) TUEV1422A(H)
TDWV1422A(H) TDDV1422A (H) TDTV1422A(H)
TUWV1422A(H) TUDV1422A (H) TUTV1422A(H)
TENS. 400V/3Ph+N/50Hz AUX. 24 VOLT
NO. TENS. (V) OA (A) [/1] FLA (A) [/1] LRA (A) [/1] P (kW ) [TOT]
COMPRESSOR 2 400/3 10,7 14,0 98 11,2
FAN 2 400/3 4,7 5,6 0 5,42
HUMIDIFIER 1 400/3 9,1 0,0 0 6,29
HEATERS STD 3 400/3 7,2 0,0 0 15
ENHANCED HEATERS 3 400/3 8,7 0,0 0 18
UNIT (STD HEATERS) (*) 41,7 26,02
UNIT (ENHANCED HEATERS) (*) 46,0 29,02
UNIT (STD HEATERS+CAL max) (*) 41, 7+10,5x1Ph 28,36
*
UNIT (ENH. HEATERS+CAL
max)
(*)
46+10,5x1Ph
31,36
Icu=15kA (CEI EN 60947-2) / (*) in operating conditions at 400V
TSR
STOP:
310 °C MAN. RESET
TSRA
STOP:
328 °C MAN. RESET
AP1-2
STOP:
26,5 bar MAN. RESET
SAFETY VALVE OPENS AT: 30 bar
CHARGE: R407C kg/circ. R22 kg/circ.
PRECHARGE: DRY NITROGEN N2
FAC-SIMILE
FAC-SIMILE
9
SYMBOLS APPLIED TO THE MACHINES
LOBMYSGNINAEM
egatlovhgiH
segdeprahS
strapgnivoM
LOBMYSGNINAEM
erachtiweldnah:ELIGARF
yrdaniderotsebtsumtinudegakcapeht:SNOITIDNOCPMADNIEROTSTONOD
ecalp
ti
nudegakcapehtfoytivargfoertnecehtswohs:YTIVARGFOERTNEC
secruostaehmorfyawaderotsebtsumtinueht:TAEHMORF
YAWAPEEK
tinudegakcapehtfonoitisoptcerrocehtsetacidni:PUEDISSIHT
ehtnihtiwecalpaniderotsebtsumtinudegak
capeht:STIMILERUTAREPMET
stimilerutarepmetdetacidni
skoohgnisustinudegakcapehttfiltonod:SKOOHESUTONOD
de
kcatsebtontsumstinudegakcapeht:KCATSTONOD
SYMBOLS APPLIED TO THE P ACKAGES
10
LEONARDO EVOLUTION - DIRECT EXPANSION
Technical characteristics
AIR COOLED DIRECT EXP ANSION UNITS WITH BACKWARD CUR VED BLADE FANS
RAUT-RADTledoM A115 A116 A127 A227 A129 A229 A1201 A2201
thgieHmm06910691069106910691069106910691
htdiWmm01010101013101310131013101310131
htpeDmm057057568568568568568568
thgieWgk0820130347
44034744034744
stiucrictnaregirferforebmuN11121212
srosserpmocforebmuN 11222222
egatlovylppusrewoPV zH05/N+hp3/V004
RAUT-RADTledoM A1211 A2211 A1231 A2231 A2241 A2261 A2281
thgieHmm0691069106910691069106910691
htdiWmm1271127112711271271227122712
htpeDmm568568568568568568568
thgieWgk845955575585896417417
stiucrictnaregirferforebmuN1212222
srosserpmocforebmuN 2222 2 2 2
egatlovylppusrewoPVzH05/N+hp3/V004
RADTledoM 2222 2422 2252 2452 2482 2433
thgieHmm571257125712571257125712
htdiWmm085208520852085208520852
htpeDmm568568568568568568
thgieWgk01901981903904018901
stiucrict
naregirferforebmuN 2222 2 2
srosserpmocforebmuN242444
egatlovylppusrewoPVzH05/N+hp3/V004
RAUTledoM 2222 2422 2252 2452 2482 2433
thgieHmm069106910691069106910691
htdiWmm085208520852085208520852
htpeDmm568568568568568568
thgieWgk01901981903904018901
stiucrict
naregirferforebmuN 2222 2 2
srosserpmocforebmuN242444
egatlovylppusrewoPVzH05/N+hp3/V004
11
VAUT-VADTledoM 115 116 127 227 129 229 1201 2201
thgieHmm06910691069106910691069106910691
htdiWmm01010101013101310131013101310131
htpeDmm057057568568568568568568
thgieWgk08208203474
4034744034744
stiucrictnaregirferforebmuN 111212 1 2
srosserpmocforebmuN 112222 2 2
egatlovylppusrewoPVzH05/N+hp3/V004
AIR COOLED DIRECT EXP ANSION UNITS WITH EC BACKWARD CUR VED BLADE FANS
VAUT-VADTledoM 1211 2211 1231 2231 2241 2261 2281
thgieHmm0691069106910691069106910691
htdiWmm0271027102710271171217121712
htpeDmm568568568568568568568
thgieWgk845955575585896417417
s
tiucrictnaregirferforebmuN1212222
srosserpmocforebmuN 22222 2 2
egatlovylppusrewoPVzH05/N+hp3/V004
VADTledoM 2222 2422 2252 2452 2482 2433
thgieHmm571257125712571257125712
htdiWmm085208520852085208520852
htpeDmm568568568568568568
thgieWgk01901981903904018901
stiucrict
naregirferforebmuN 2222 2 2
srosserpmocforebmuN242444
egatlovylppusrewoPVzH05/N+hp3/V004
VAUTledoM 2222 2422 2252 2452 2482 2433
thgieHmm069106910691069106910691
htdiWmm085208520852085208520852
htpeDmm568568568568568568
thgieWgk01901981903904018901
stiucrict
naregirferforebmuN 2222 2 2
srosserpmocforebmuN242444
egatlovylppusrewoPVzH05/N+hp3/V004
12
CHILLED WA TER DIRECT EXP ANSION UNITS WITH BACKW ARD CURVED BLADE FANS
RWUT-RWDTledoM 116 129 1231 2261 2281
thgieHmm06910691069106910691
htdiWmm01010131027117121712
htpeDmm057568568568568
thgieWgk013034575417417
stiucrictnaregirferforebmuN 11122
srosserpmocforebmuN12222
egatlovylppusrewoPVzH05/N+hp3/V004
RWDTledoM 2422 2452 2482 2433
thgieHmm5712571257125712
htdiWmm0852085208520852
htpeDmm568568568568
thgieWgk699020102110411
stiucrictnaregirferforebmuN2222
s
rosserpmocforebmuN4444
egtalovylppusrewoPVzH05/N+hp3/V004
RWUTledoM 2422 2452 2482 2433
thgieHmm0691069106910691
htdiWmm0852085208520852
htpeDmm568568568568
thgieWgk699020102110411
stiucrictnaregirferforebmuN2222
s
rosserpmocforebmuN4444
egtalovylppusrewoPVzH05/N+hp3/V004
13
AIR COOLED DIRECT EXP ANSION UNITS (DXA)
The air cooled DX units extract heat from the room and transfer it to
the outside using air cooled refrigerant heat exchangers (condensers).
The room unit and external condenser form an autonomous sealed circuit
once installed. The UNIFLAIR remote condensers used with LEONARDO
units include a precise electronic system to regulate the fan speed to
ensure trouble-free operation throughout the year under a wide range of
external air temperatures. Special attention has been paid to the acoustic
design of the condensers to minimise noise levels. A wide range of
combinations is available to meet different site requirements.
WA TER COOLED DIRECT EXP ANSION UNITS (DXW)
In the DX water cooled units, the heat extracted from the room is
transferred to water via a stainless steel brazed plate exchanger within
the unit.
The cooling water may be fed from the mains supply, a cooling tower or
a well (open circuit), or recycled in a closed loop cooled by external
coolers.
In the latter case, an anti-freeze mixture of water and ethylene glycol is
normally used.
The water cooled units have the advantage that the refrigerant circuits
are charged and sealed in the factory . This makes installation extremely
simple, eliminating the need for any site-installed refrigerant pipework.
CHILLED WA TER DIRECT EXP ANSION UNITS WITH EC BACKW ARD CURVED BLADE FANS
VWUT-VWDTledoM 116 129 1231 2261 2281
thgieHmm06910691069106910691
htdiWmm01010131027117121712
htpeDmm057568568568568
thgieWgk082034575417417
stiucrictnaregirferfo
rebmuN11122
srosserpmocforebmuN 12222
egatlovylppusrewoPVzH05/N+hp3/V004
Operating description
VWDTledoM 2422 2452 2482 2433
thgieHmm5712571257125712
htdiWmm0852085208520852
htpeDmm568568568568
thgieWgk699020102110411
stiucrictnaregirferforebmuN2222
s
rosserpmocforebmuN4444
egtalovylppusrewoPVzH05/N+hp3/V004
VWUTledoM 2422 2452 2482 2433
thgieHmm0691069106910691
htdiWmm0852085208520852
htpeDmm568568568568
thgieWgk699020102110411
stiucrictnaregirferforebmuN2222
s
rosserpmocforebmuN4444
egtalovylppusrewoPVzH05/N+hp3/V004
14
Name and description of the principle components
A
B
C
A User terminal
B Electrical panel door
C Cover panels
D Electrical panel
E Filters
F Fans
G Cooling circuit
H Brazed plate heat exchanger
(present in chilled water
models)
H
E
D
F
G
D
E
F
G
MODELS TD./ TU. 511 ÷ 1822
MODELS TD./ TU. 2222 ÷ 3342
15
Description of the components
A - User terminal
Allows the unit to be turned on or off and the configuration
and visualization of the condition of the machine.
• A1 LCD Display
•A2 ALARM key: visualization and reset of alarms;
when the alarm is activated, it flashes red.
•A3 PRG key: access to the configuration menu
•A4 ESC key : exit from the screens
•A5 UP key : scroll through the menu
•A6 ENTER key : confirm
•A7 DOWN key: scroll through the menu
A2
A3
A4
A5
A6
A7
A1
B - Electrical panel door
Allows access to the electrical panel of the machine.
C - Cover panels
Allow access to the internal components of the machine.
D - Electrical panel
• D1 Magnetothermic
- auxiliary
- heater (optional)
- humidifier (optional)
- fans
- compressors
• D 2 Interface board
• D 3 Dirty filter sensor
• D 4 Air flow sensor
• D5 Main switch
• D 6 Terminal board
• D 7A Input/output electrical supply cables
• D 7B Input/output electrical auxiliary cables
• D 7 C Input/output condensing unit supply
• (optional) - Only on units with air cooling
• D 7 D Entrance/exit signal cables (RS485 and/or LAN)
• D 8 Phase sequence relay
• D9 Maximum pressure manostat (only for mod. TD.
2222 ÷ 3342)
D5
D1
D2
D3
D6
D
7A
D4
D8
D
7B
D
7C
D
7D
MODELS TD./ TU. 511 ÷ 1822
MODELS TD./ TU. 2222 ÷ 3342
F
E
F1
E - Filters
Filter the air released into the environment
F - Fans
Allow the diffusion of air into the room
• F1 A TR T ransformer: allows the setting of the fan rotation
speed
D2
D1
D7AD
7C
D
7B
D
7D
D3D4 D9
D5 D6D8
16
H H1
G1
G2
G3
G4 G5
G6 G7G8
G10
G11
G9
G - Cooling circuit
• G1 Compressor
• G 2 High pressure switch
• G3 Schrader Valve
• G4 Safety V alve
• G5 Shut -off valve
• G6 Circuit Exit
• G 7 Circuit entrance
• G8 Liquid receiver
• G9 Dehydration filter
• G 1 0 Flow sight glass
• G11 Electronic thermostatic valve
G12
• G1 2 Evaporating coil
H - Brazed plate heat exchanger (present on water cooled
units)
• H1 Input/output hydraulic circuit
I
I - Room temperature and humidity sensor
17
Checks to be made on delivery
WARNING! Dispose of the packaging in
appropriate collection points.
The Leonardo Evolution units are packaged in wooden crates
or anchored to a pallet and covered in cardboard.
Check that the delivery is complete and inform the carrier of
any damage to the unit which may be attributed too careless
or inappropriate transportation. In particular, check any
eventual damage to the panel in which the user terminal is
mounted.
Lifting and moving the unit must be carried out by a
mechanical lifter, supplied with a sling made up of textile
belts, which, fixed under the machine, limits excessive stress
on the upper edges.
The following must be contained within the packaging:
• The Leonardo Evolution unit;
• Leonardo Use and Installation Manual;
• Leonardo unit electrical diagrams;
• Leonardo unit cooling circuit diagrams;
• Leonardo unit installation diagrams;
• List of spare parts;
• CE declaration with a list of the European standards to
which the machine must conform;
• guarantee conditions
Unloading the unit
T o unload the unit from the pallet, carry out the following procedure:
• move the pallet as near as possible to where the unit is
to be installed;
• not tilt or turn the unit upsidedown;
• use a ramp to avoid any damage to the unit during
unloading;
• remove the blocking screws which fix the unit to the
pallet;
• carefully push the unit along the ramp until it reaches
the floor.
Characteristics of the installation area
WARNING! The unit must be inst alled internally
and protected from adverse conditions.
The unit is predisposed for installation on raised access flooring
using mounting frames or appropriate floor stands supplied
on request from Uniflair. However , the upflow units (upwards
air flow) with air intake through the rear or front can also be
installed on floors which are not raised.
The area of installation must have the following characteristics:
• to facilitate maintenance, leave a clearance (distance
D) of at least 700mm free in front of the unit. Check that
the air intake and discharge connections are not blocked
in any way , not even partially;
• a horizontal and even floor;
• the electrical energy distribution system has been
produced in respect of CEI standards, suitable for the
characteristics of the unit;
• a cold water distribution implant (if a humidifier is to be
installed);
• implant for connection to the condensing unit;
• external air outlet (if a fresh air intake is to be installed);
• if or the refrigerating gas drain see paragraph "Connection
to gas drain";
• drainage system.
WARNING! The preparation of the installation
area must be carried out as indicated in the
installation drawing attached to the machine
documentation.
Positioning of the unit
WARNING! If the surface where the unit is placed
is not even and horizontal, there is a risk of an
overflow from the condensation tray. A
maximumheight difference of 5mm between the
ends of the unit is allowed.
Installation on raised access flooring
Installation on raised access flooring occurs by means of a
mounting frame. The frame enables the installation of the
unit before the raised floor is installed, increased absorption
of noise and vibrations and the facilitation of connecting ipes
and cables.
The upflow models (upwards air flow) with rear or frontal air
intake may be installed without using the mounting frame.
D
18
Installation of the mounting frame
To install the unit on raised flooring using the mounting frame, carry out the following procedures:
• a flexible seal at least 5 mm thick should be fitted
between the raised floor panels and the mounting frame
which should also be isolated from the metallic floor
structure;
• position the unit of the mounting frame and fix it using
the M8 screw inserts found on the base of the unit.
Installation on flooring which is not raised
Installation on flooring which is not raised can occur without
using bases, but only on upflow models
(upwards air flow) with rear or frontal air intake. Installation on
this type of floor does not require any additional operation
besides that of normal positioning.
Installation of the floor stand
To install the unit on the floor stand, carry out the following
procedures:
• position the unit on the floor stand;
• fix the unit to the floor stand using the M8 screw inserts
found on the base of the unit.
basamento
condizionatore
zoccolo
unità
Door opening and removal of the panels
Door opening
T o open the door of the unit, carry out the following procedure:
• push the button and pull the handle lightly outwards;
• turn the handle downwards until the door opens.
Removal of the front and side panels
To remove the front and side panels, carry out the following
procedure:
• firmly hold the panel;
• lift and incline the panel outwards until it is completely
removed.
Q.E.
NOTE: After having removed the side panels, the nonremovable protective panel, blocks accessibility to the inside
of the machine.
Removal of the rear panels
T o remove the rear panels, carry out the following procedure:
• unscrew, using a star screwdriver, the screws which fix
the panel at the top of the machine;
• firmly hold the panel;
• lift and incline the panel outwards until it is completely
removed.
Fixing screws
Flexible seal
Flexible seal
Mounting
frame
Raised
floor
Air conditioning unit
Base of unit
Floor stand
19
Internal protection panels
The technical compartment, the electric heaters and the
autotransformer fans are protected by internal protection
panels for safety reasons and to allow the opening of the
external panels without triggering the unit's safety alarms. In
the figures below, the different types of internal protection
panels are shown on various types of machines.
Before removing the internal protection panels,
disconnect the power supply by turning the main isolating
switch D5 to position "O", then wait until the fans stop and
the electrical heaters cool down.
MODELS TD. 51 1 ÷ 1822
MODELS TU. 51 1 ÷ 1822
MODELS TD. 2222 ÷ 3342
MODELS TU. 2222 ÷ 3342
20
Electrical connections
WARNING! Electrical connection of the machine
to the power supply must ONLY be carried out
by a qualified electrician.
WARNING! Electrical lines must be est ablished
in full respect of CEI standards.
WARNING! Before establishing the electrical
connection, make sure that the power supply is
off. Also ensure that it is not possible to
reconnect the power during the operation.
WARNING! The power supply volt age must be ±
10%
T o carry out the electrical connections of the machine to the
power supply , carry out the following procedures:
• use suitable equipment to check the efficiency of the
grounding system;
• check that the voltage and network frequency correspond
to those of the machine (see identification label);
• open the door of the electrical panel;
• remove the plastic screen of the electrical panel using a
star screwdriver;
D5
D
7A
D
7B
• pass the cables inside using the power supply cable inlet
D7A which connects to the main switch D5;
• refer to the wiring diagram and connect the cable to the
main switch D5.
2222 - 2242 - 2522 - 2542 - 2842 - 3342
POWER SUPPLY CABLE
(at customers at care)
POWER SUPPL Y CABLE
(at customers at care)
21
Connection to the drains
The condensed water drains from the tray through a siphoned
flexible tube fitted in the unit.
If the conditioner is fitted with a humidifier, the condensate
drain tray and the humidifier drain connection must be
connected to the drains of the building.
Direct connection to the drains of the building
Connect the drainage tube of the unit to the drains of the
building using a rubber or plastic tube with an internal diameter
of 25 mm.
The external drainage tube must be siphoned in order to avoid
unpleasant odours. Maintain a minimum slope of 1%
downstream of the siphon.
Once the connections have been made, pour water into the
condensate drain until the siphon inside the unit is full.
The external drainage tube must be siphoned to avoid
unpleasant odours and an overflow of the water from the tray
of the humidifier. Maint ain a minimum slope of 1% downstream
of the siphon.
Once the connections have been made, pour water into the
condensate collection tray of the Leonardo unit and in the
condensate collection tray of the humidifier until both siphons
are full.
Connection to the gas drain
The cooling circuit is equipped with a safety valve for the
discharge of the refrigerant gas.
The intervention of the valve pressurises the discharge of the
refrigerant fluid, possibly also to high temperatures; in the
case of installation in a closed environment, where there is
the risk of causing damage to people nearby, a conveying
tube must be used from the discharge to outside the room;
this must be done in such a way that the operation of the
valve is not affected: it must not create a full flow , a counterpressure higher than 10% of the pressure of the calibration.
Where it is not possible to install a conveying tube it is good
practice to create adequate aeration of the environment, and
indicate, through specific signs, the presence of the drain.
Also check that the discharge of the valve does not take
place behind the electrical boards or electrical equipment.
U7
U4
SAFETY V ALVE
OUTLET
Connection to the humidifier (optional) and to the drains
of the building
WARNING! The water discharged from the
humidifier is at a very high temperature. The
drainage tube has to withstand high
temperatures (at least 100°C) and must be kept
away from electrical cables.
Connect the drainage tube of the unit to the collection tray
(U4) of the humidifier.
Connect the drainage tube of the humidifier (U7) to the drains
of the building using a rubber or plastic tube, which is resistant
to high temperatures (minimum 100 °C) with an internal
diameter of 22 mm.
To connect the auxiliary connections to the terminal board,
carry out the following procedures:
• pass the cables through the power supply cable inlet
D7B;
D5
D
7A
D
7B
• refer to the wiring diagram and carry out the connection
to the terminal board.
DIGIT AL CONFIGURABLE INPUTS
Terminal board 51-20
- User
- ON - OFF Remote
- Flooding sensor (SAS)
Terminal board 52-20
- User
- ON-OFF Remote
- Fire-smoke (SFF)
Terminal board 50-20
- User
- ON-OFF Remote
- T ools (AT A-BT A-AUA-BUA)
202020
20
505152
Drain
%
Siphon
Minimum slope
Drain
%
Siphon
Minimum slope
22
Refrigerant connections on air cooled units
Installation guide
WARNING! The pipes must always be protected from the sun.
C
1/100
B
A
C
1/100
A
MAX.
5 m
B
A
1/100
B
MA
X
.
5 m
MA
X
.
15 m
C
Choosing the diameter of the discharge tube
The discharge line must be sized in such a way that it guarantees the flow of oil, in particular when operating at partial load,
avoiding the return of the condensate refrigerant to the head of the compressor and prevent excessive vibration and noise
due to the pulsations of hot gas, vibrations of the compressor, or both.
Even if it would be preferable to have low losses of the load along the line, an oversized discharge line is necessary to
reduce the speed of the refrigerant so that it does not provoke a reduction in its speed and therefore reduce the flow of oil.
Moreover, when the machine uses more compressors for the cooling circuit, the discharge line must transport the oil at all
operating levels.
The minimum diameters needed to guarantee the flow of oil can be found in Graphics 1 -2 for the horizontal and vertical lines
respectively .
In the installation of machines which have more compressors per circuit, the vertical discharge line, sized in order to
guarantee the flow of oil at minimum load, may cause excessive loss of load when operating at its maximum level; in this
case it is possible to use pipes with a larger diameter together with an oil separator .
The loss of load along the discharge line causes an increase in the condensing temperature and therefore a decrease in the
cooling capacity of the conditioner. Please note that each percentage point of decrease in the cooling cap acity corresponds
to a decrease of 1°C of the maximum operating temperature. Normally the systems are sized in such a way that the loss
of load from the discharge line does not cause a decrease in the efficiency of the machine of more than -3%.
The responsibility of establishing the refrigerant line between the condensing unit and the external unit lies
with the installer.
23
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
0 1020304050
Resa frigorifera/circuito [KW]
DP/L [ Kpa/m ]
12 mm
14
18 mm
20 mm
22 mm
35 mm
24 mm
28
16 mm
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
0 10 2030 4050
Resa frigorifera/circuito [KW]
DP/L [Kpa/m]
12 mm
14 mm
16 mm
18 mm
20 mm
22 mm
24
Tubazioni di mandata - linea orizzontale Grafic
DP/L :Perdita di carico per metro calcolata per R407C (Temperatura di condensazione 50°C dew point)
Tubazioni di mandata - linea verticale Grafic
Discharge tube - horizontal line (External diameter)
Discharge tube - vertical line (External diameter)
Cooling capacity / circuit [KW]
DP/L :Load loss per meter calculated by R407C (Condensing temperature 50°C dew point)
Graphic 2
Cooling capacity / circuit [KW]
R407C
Graphic 1
24
R410A
Graphic 1
Discharge tube - horizontal line
DP/L [kP a/m]
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
01020304050
Cooling capacity/circuit [kW]
12 mm
14 mm
16 mm
18 mm
20 mm
22 mm
24 mm
28 mm
Graphic 3
0,0 5,0 10,0 15,0 20,0 25,0 30,0 35, 0 40,0
Lunghezza Equivalente
[m]
DP/L=3
DP/L=1
DP/L=2
DP/L=4
DP/L=5
DP/L=6
DP/L=7
DP/L=8
DP/L=10DP/L=12DP/L=14,5
3 -Non c onsentito
1 -Ideal e
2 -Conse ntito
Not allowed
Allowed
Ideal
Equivalent lenght
25
Discharge tube - vertical line
Graphic 2
01020304050
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
DP/L [kP a/m]
Cooling capacity/circuit [kW]
12 mm
14 mm
16 mm
18 mm
20 mm
22 mm
24 mm
DP/L : Pr essure drop per metre based on R 410A
Graphic 3
-5 0 5 10 15 20 25 30 35 40
Equivalent line [m]
3 - Non consentito - Unacceptable
2 - Cons entito - Ac cepta ble
1 - Ideale - Recommended
DP/L = 14 DP /L = 12 DP /L = 10 DP/L = 8
DP/L = 7
DP/L = 6
DP/L = 5
DP/L = 4
DP/L = 3
DP/L = 2
DP/L = 1
26
Conforming to the Standards EN 14276-1 and EN 14276-2 the minimum recommended thickness for the gas supply pipe
where bends are made for the air cooled units with R410A refrigerant, must be equal to the values present in the attached
table below. The value `R' refers to the minimum allowed radius of the bend.
retemaidlanretxEdnebehtfosuidaRssenkcihT
)mm(eD]mm[r]mm[t
820012,1
22661
81721
61621
21021
De
r
t
Cooling capacity/circuit at
partia l load ope ration (5 0)%
Cooling capacity/circuit at
full load operation(100)%
E quiva lent length
No
Chart3
Line s izing
Type of line
Chart2
Vertical line
Chart1
Horiz ontal line
Cooling capacity/circuit at
full load operation(100)%
DP/L (100%)
Allowed diameters
Tandemunit
Allowed diameters
Not allowed diameter
Ideal diameter
Al lowed di ame ter bu t no re co men ded
Acceptable
Ideal
Unacceptable
Yes
only R407C
Line sizing R407C
EXAMPLE - Choosing the diameter of the discharge tube
with R407C refrigerant
Conditioner selected: TDAR0721A
Cooling capacity per circuit: 24 Kw
Discharge line: vertical
Equivalent length of the line: 20 m
1) Graphic 2:
Operating at 100% (2 compressors - cooling capacity per
circuit = 24KW):
possible diameters:
20mm DP/L= 1,8 Kpa/m
18mm DP/L= 3,0 Kpa/m
16mm DP/L= 6,0 Kpa/m
14mm DP/L= 1 1,5 Kpa/m
Operating at 50% (1 compressor - cooling capacity per
circuit = 12 KW): possible diameters:
16mm DP/L= 1,7 Kpa/m
14mm DP/L= 3,4 Kpa/m
2) Graphic 3:
Operating at 100% (2 compressors)
Diameter 16mm 6,0 Kpa/m Allowed Diameter 14mm
1 1,5 Kpa/m Not allowed
The advised diameter is 16 mm
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