CLIMAVENETA i-SACS-S 0011 Operating instructions

Air/water heat pumps with
axial-ow fans and pump
assembly
i-SACS-S 0011 - 0061
HM 0011 - 0061
INSTALLATION - USER - MAINTENANCE MANUAL

i-SACS
2English
The following symbols are used in some parts of this publication and inside the unit:
INDEX
70C
A
I
U
The manufacturer reserves the right to modify the data in this manual without warning.
Eurovent certification program.
ENVIRONMENTAL INFORMATION: This unit contains fluorinated greenhouse gases covered by the Kyoto Protocol.
The maintenance and disposal operations must only be carried out by qualified personnel. R410A, GWP=1975
General warnings 3
Waiver of liability 3
Fundamental safety rules 3
Receiving and handling the product 4
Description of standard unit 5
Dimensioned drawings 7
Installation 8
Water connections 8
Electrical connections 10
General technical data 17
Operating limits 18
Checking and starting up the unit 19
Shutting down for long periods 20
Routine maintenance 20
Special maintenance 20
Displaying alarms 21
Troubleshooting 22
Controller navigation menu 24
Disposal 25
Useful information 25
U I A
U I A
I A
I A
I
I
I A
I A
I A
A
A
A
I A
A
UIA
UA I
A
A
A
A
User
Installer
Assistance
Important
Prohibition
Danger voltage
Danger moving blades
Danger high temperatures

i-SACS 3English
GENERAL WARNINGS UAI
These appliances have been designed to chill
and/or heat water and must be used in applica-
tions compatible with their performance characte-
ristics; these appliances are designed for resi-
dential or similar applications.
Incorrect installation, regulation and maintenance
or improper use absolve the manufacturer from
all liability, whether contractual or otherwise, for
damage to people, animals or things.
Only those applications specifically indicated in
this list are permitted.
Read this manual carefully. All work must be car-
ried out by qualified personnel in conformity with
legislation in force in the country concerned.
The warranty is void if the above instructions are
not respected and if the unit is started up for the
first time without the presence of personnel autho-
rised by the Company (where specified in the sup-
ply contract) who should draw up a “start-up”
report.
The documents supplied with the unit must be
consigned to the owner who should keep them
carefully for future consultation in the event of
maintenance or service.
When the items are consigned by the carrier,
check that the packaging and the unit are unda-
maged.
If damage or missing components are noted, indi-
cate this on the delivery note. A formal complaint
should be sent via fax or registered post to the
After Sales Department within eight days from the
date of receipt of the items.
All repair or maintenance work must be carried out
by the Company’s Technical Service or qualified
personnel following the instructions in this manual.
Do not modify or tamper with the appliance as this
may create situations of danger; in such cases the
manufacturer of the appliance is not liable for any
damage caused.
The unit only works correctly if combined with the
corresponding outdoor unit.
Correct operation and safety of the unit are not
ensured when using outdoor units of other brands/
manufacturers.
WAIVER OF LIABILITY UAI
This publication is the sole property of Climave-
neta. Any reproduction or disclosure of such is
strictly prohibited without the written authorisa-
tion of Climaveneta.
This document has been prepared with ma-
ximum care and attention paid to the content
shown. Nonetheless, Climaveneta waives all lia-
bility deriving from the use of such document.
Read this document carefully.
All work must be performed, components selec-
ted and materials used in complete accordan-
ce with the legislation in force in material in the
country concerned, and considering the opera-
ting conditions and intended uses of the system,
by qualied personnel.
The data contained in this publication may be
changed without prior notice.
FUNDAMENTAL SAFETY RULES UA
I
When operating equipment involving the use of elec-
tricity and water, a number of fundamental safety rules
must be observed, namely:
The unit must not be used by children or by
unfit persons without suitable supervision.
Do not touch the unit with bare feet or with
wet or damp parts of the body.
Never perform any cleaning operations befo-
re having disconnected the unit from the mains
power supply.
Do not modify safety or control devices
without authorisation and instructions from the
manufacturer.
Do not pull, detach or twist the electrical cables
coming from the unit, even when disconnected
from the mains electricity supply.
Do not open doors or panels providing
access to the internal parts of the unit without
first ensuring that the mains switch is in the off
position.
Do not introduce pointed objects through the
air intake and outlet grills.
Do not dispose of, abandon or leave within
reach of children packaging materials (cardbo-
ard, staples, plastic bags, etc.) as they may
represent a hazard.

i-SACS
4English
The i-SACS-S and HM appliances are sup-
plied without the main switch.
Power supply to the unit must be disconnected
using a switch with suitable characteristics, to
be supplied and installed by the installer.
Check the power supply voltage used on the
labels applied to the unit.
Respect safety distances between the unit
and other equipment or structures. Guarantee
adequate space for access to the unit for main-
tenance and/or service operations.
Power supply: the cross section of the electri-
cal cables must be adequate for the power of
the unit and the power supply voltage must cor-
respond with the value indicated on the respec-
tive units. All units must be earthed in conformi-
ty with legislation in force in the country
concerned.
Terminals 3-4 and 5-6 on the HM hydronic
module may be powered even after the unit is
disconnected.
Make sure power is not connected before pro-
ceeding.
Water connections should be carried out as
indicated in the instructions to guarantee cor-
rect operation of the unit.
Add glycol to the water circuit if the unit is not
used during the winter or the circuit is not
emptied (only modules installed outdoors).
Handle the unit with the utmost care (see
weight distribution table) to avoid damage.
RECEIVING AND HANDLING THE PRODUCT IA
The units are supplied complete with:
- installation, user and maintenance manual;
- CE declaration;
enclosed in a plastic envelope attached to the top of the
hydronic module.
The unit should always be handled by qualified personnel
using equipment adequate for the weight of the chiller.
If a forklift truck is used, insert the forks under the bed
plate, spacing the forks as wide apart as possible.
If a crane is used, pass the cables through the bottom of
the bed plate, making sure they do not exert pressure on
the unit.
The installation, user and maintenance
manual is an integral part of the unit and should
therefore be read and kept carefully.
It is recommended that the packaging should
not be removed until the unit is located in the
installation site.
Do not dispose of packaging materials in the
environment or leave them within reach of chil-
dren as they may represent a hazard.
During transport, the unit should be kept in a vertical
position.

i-SACS 5
English
Dimension L [mm] 845 895 990 990 940 940
Dimension P [mm] 335 302 340 340 340 340
Dimension H [mm] 715 880 980 980 1265 1265
Gross weight
for transport [kg] 65 68 82 98 100 106
Operating
weight [kg] 64 67 81 97 99 105
i-SACS-S 0011 0021 0031 0041 0051 0061
Dimension L [mm] 425 425 425 425 425 425
Dimension P [mm] 295 295 295 295 295 295
Dimension H [mm] 950 950 950 950 950 950
Gross weight
for transport [kg] 49 49 50 52 53 55
Operating
weight [kg] 34 34 35 37 38 40
HM 0011 0021 0031 0041 0051 0061
i-SACS-S HM
Shrink wrap
DESCRIPTION OF STANDARD UNIT AI
The i-SACS-S and HM units operate with refrigerant
fluid and are suitable for indoor installation.
The units conform to the essential requisites of EEC
directive 98/37.
They are factory tested and on site installation is limi-
ted to electrical and refrigerant connections.
POWER AND CONTROL ELECTRICAL PANEL
Power and control electrical panel, built in compliance
with the following directives:
2006/95/EC
2004/108/CE
98/37/CE
ACCESSORIES AVAILABLE
- Removable metal mesh filter.
- Rubber vibration dampers.
The above accessories are optional. Consult the rela-
tive documentation for assembly instructions and tech-
nical data.
Dimensions with packaging
Hole diam. Ø22
H
P
L
H
P
L

i-SACS
6English
1 Electrical panel
2 Control panel
3 Heat exchanger installation side
4 Pump
5 Expansion tank
6 Pressure gauge
7 Differential pressure switch
8 Valve
6
5
4
3
2
1
HM
i-SACS-S
COMPRESSORS
One hermetic scroll compressor complete with sump
heater and thermal cut-out with speed control (inver-
ter).
STRUCTURE
Panels and base are made from galvanised steel plate
painted with epoxy powder to ensure total resistance
to atmospheric agents.
Condensate collection pan as standard.
CONDENSING COILS
Made using copper tubes and aluminium fins with a
high exchange surface area.
Condensing coil protection grills as standard.
FANS
External impeller axial-flow fans.
Six-pole electric motor with built-in thermal cut-out.
Housed in aerodynamic tubes with accident preven-
tion grill.
Device for operation at low outside air temperatures:
stepped fan rotation speed control according to the
outside air temperature.
REFRIGERANT CIRCUIT
Unit fitted with one refrigerant circuit, complete with
the following components: filter, electronic thermosta-
tic expansion valve.
Pressure switches to control delivery and suction
pressure.
Unit supplied complete with non-freezing oil and
R410a refrigerant charge, factory tested.
HM
PUMPS
The units feature a pump with the moving parts in con-
tact with the water made from corrosion resistant
materials, extra wear ring on the impeller, built-in
capacitor for high starting torque and automatic ven-
ting of impeller chamber.
PUMP ASSEMBLY
Pump assembly with expansion tank, safety valve,
manual filling assembly, pressure gauge and pump.
PLATE HEAT EXCHANGER
AISI 316 stainless steel plate type evaporator complete
with frost protection heater and differential pressure
switch.
STRUCTURE
Panels and base are made from galvanised steel plate
painted with epoxy powder to ensure total resistance
to atmospheric agents.
1 Electrical panel
2 Control panel
3 Heat exchanger installation side
4 Pump
5 Expansion tank
6 Pressure gauge
7 Differential pressure switch
8 Valve
6
7
8

i-SACS 7English
i-SACS-S HM
A335 302 340 340 340 340
B695 860 860 860 1245 1245
C845 895 990 990 940 940
D560 590 625 600 600
Dimension [mm] 0011 0021 0031 0041 0051 0061
i-SACS-S
HM
A250 250 250 250 250 250
B815 815 815 815 815 815
C340 340 340 340 340 340
Dimension [mm] 0011 0021 0031 0041 0051 0061
DISEGNI DIMENSIONALI I
CLEARANCE
600
200
600
300 300
B
A
D
C
B
A
C

i-SACS
8English
INSTALLATION
WATER CONNECTIONS
CHOICE OF INSTALLATION SITE
Before installing the unit, agree with the customer the
site where it will be installed, taking the following
points into consideration:
-check that the fixing points are adequate to support
the weight of the unit;
-pay scrupulous respect to safety distances between
the unit and other equipment or structures to ensure
that air entering the unit and discharged by the fans is
free to circulate.
POSITIONING
Before handling the unit, check the capacity of the lift
equipment used, respecting the instructions on the
packaging.
To move the unit horizontally, make appropriate use of
a lift truck or similar, bearing in mind the weight distribu-
tion of the unit.
To avoid the slings damaging the unit, place protection
between the slings and the unit.
Position the unit in the site indicated by the customer.
Place either a layer of rubber (min. thickness 10 mm)
or vibration damper feet (optional) between the base
and support surface.
Fix the unit, making sure it is level and that there is
easy access to water and electrical components.
If the site is exposed to strong winds, fix the unit ade-
quately using tie rods if necessary.
Make sure the condensate is drained using the drain
hose supplied as standard.
Prevent leaves, branches or snow from accumulating
around the unit and affecting correct operation.
The choice and installation of components is the
responsibility of the installer who should follow good
working practice and current legislation.
Before connecting the pipes, make sure they do not
contain stones, sand, rust, dross or other foreign
bodies which might damage the system.
Construction of a bypass is recommended to enable
the pipes to be washed through without having to
disconnect the unit (see drain valves).
The connection piping should be supported in such a
way as to avoid it weighing on the unit.
It is recommended that the following devices are instal-
led in the evaporator water circuit:
1. Two pressure gauges with a suitable scale (intake
and outlet);
2. Two vibration damper joints (intake and outlet);
3. Two gate valves (normal in intake and calibrating in
outlet);
4. Two thermometers (inlet and outlet).
The flow of water to the chiller assembly must conform
to the values indicated.
The flow of water must be maintained constant during
operation.
The water content of the unit must be such as to avoid
disturbing operation of the refrigerant circuits.
Refer to the values indicated.
The following components are required.
Failure to install these may void the warranty.
1. One intake flow switch as close as possible to the
evaporator and positioned to allow easy access for
routine maintenance.
2. An intake filter as close as possible to the evapora-
tor and positioned to allow easy access for routine
maintenance.
Before connecting the pipes, make sure they do not
contain stones, sand, rust, dross or other foreign
bodies which might damage the system.
Construction of a bypass is recommended to enable
the pipes to be washed through without having to
disconnect the unit (see drain valves).
Refer to the values indicated.
The following components are required.
Failure to install these may void the warranty.
1. One intake flow switch as close as possible to the
evaporator and positioned to allow easy access for
routine maintenance.
2. An intake filter as close as possible to the evapora-
tor and positioned to allow easy access for routine
maintenance.
I
A
I
1 Pressure gauge
2 Vibration damper joint
3 Gate valve
4 Calibrating valve
5 Flow switch
6 Thermometer
7 Pump
8 Safety valve
9 Air vent
10 Expansion tank
11 Mesh filter
12 Fill/top-up
13 Temperature probe
14 Differential pressure switch
15 Drain / chemical washing valve
16 Plate heat exchanger
9
2 4
1
15
16
11
15
7
2 3
10
5
6
T
6
T
F
1
1
13
13
14
8
12
Factory connections
Installer connections
INSTALLATION WATER
OUTLET
INSTALLATION WATER
INLET

i-SACS 9
English
The chillers must be provided with a filling/top-up
system connected to the return line and a drain
cock in the lowest part of the installation.
Installations containing antifreeze or covered by
specific legislation must be fitted with water cir-
cuit disconnectors.
EMPTYING THE INSTALLATION
-Before emptying, place the mains switch in the “off”
position.
-Make sure the installation fill/top-up water cock is clo
sed. -Open the drain cock outside the unit and all the
installation and terminal air vent valves.
If the fluid in the circuit contains antifreeze, it
should not be allowed to drain freely, as it is
pollutant.
It should be collected for possible reuse.
When draining after heat pump operation, take
care as the water may be hot (up to 50°).
PH 6-8
Electrical conductivity (25°C) less than 200 mV/cm
Chlorine ions less than 50 ppm
Sulphuric acid ions less than 50 ppm
Total iron less than 0.3 ppm
Alkalinity M less than 50 ppm
Total hardness less than 50 ppm
Sulphur ions none
Ammonia ions none
Silicon ions less than 30 ppm
A 60 60 60 60 60 60
B63 63 63 63 63 63
C215,5 215,5 215,5 215,5 215,5 215,5
D49,5 49,5 49,5 49,5 49,5 49,5
Water connections
Male inlet (dia.) 3/4” 3/4” 3/4” 1”1/4 1”1/4 1”1/4
Water connections
Female outlet (dia.) 1” 1” 1” 1”1/4 1”1/4 1”1/4
Gas fittings
suction [mm] 12,7 15,9 15,9 15,9 15,9 15,9
Two-phase gas fit-
tings outlet [mm] 6,35 9,53 9,53 9,53 9,53 9,53
Grandezza 0011 0021 0031 0041 0051 0061
HM
FILLING THE INSTALLATION
-Before filling, check that the installation drain valve is
closed.
-Open all installation and terminal air vents.
-Open installation gate valves.
-Start filling by slowly opening the installation water fill
cock outside the unit.
-When water begins to leak out of the terminal air vent
valves, close them and continue filling until the pre
sure gauge indicates a pressure of 1.5 bar.
The installation must be filled to a pressure of
between 1 and 2 bars.
The manufacturer is not liable for obstruction,
breakage or noise resulting from the failure to
install filters or vibration dampers.
Particular types of water used for filling or top-
ping up must be treated with appropriate treat-
ment systems.
For reference values, see the table.
It is recommended that this operation be repea-
ted after the unit has been operating for a number
of hours.
The pressure of the installation should be checked
regularly and if it drops below 1 bar, the water content
should be topped-up.
Check the tightness of the joints.
DC
A B
REFRIGERANT FITTINGS
INSTALLATION OUT
INSTALLATION IN

i-SACS
10 English
ELECTRICAL CONNECTIONS
The i-SACS-S units and corresponding HM hydro-
nic modules leave the factory already wired, and
require the installation of an thermal overload switch,
a lockable mains disconnect switch for the connection
to the mains power supply, and the connection of the
flow switch to the corresponding terminals. All the
above operations must be carried out by qualified per-
sonnel in compliance with the legislation in force.
For all electrical work, refer to the electrical wiring dia-
grams in this manual.
It is also recommended to check that:
-The characteristics of the mains electricity supply are
adequate for the power ratings indicated in the electri-
cal specications below, also bearing in mind the pos-
sible use of other equipment at the same time.
Power to the unit must be turned on only after
installation work (water and electrical) has been
completed.
All electrical connections must be carried out by
qualified personnel in accordance with legisla-
tion in force in the country concerned.
Respect instructions for connecting phase,
neutral and earth conductors..
The power line should be fitted upstream with a
suitable device to protect against short-circuits
and leakage to earth, isolating the installation
from other equipment.
Voltage must be within a tolerance of ±10% of
the rated power supply voltage for the unit (for
three phase units, the unbalance between the
phases must not exceed 3%).
If these parameters are not respected, contact
the electricity supply company.
For electrical connections, use double insula-
tioncable in conformity with legislation in force in
the country concerned.
A thermal overload switch and a lockable mains
disconnect switch, in compliance with the CEI-
EN standards (contact opening of at least 3mm),
with adequate switching and residual current
protection capacity based on the electrical data
table shown below, must be installed as near as
possible to the appliance.
An efficient earth connection is obligatory.
The manufacturer cannot be held liable for any
damage caused by the failure to correctly earth
the unit.
In the case of three phase units, ensure the
phases are connected correctly.
Do not use water pipes to earth the unit.
POWER CONNECTIONS
For the functional connection of the unit, bring the
power supply cable to the electrical panel inside the
unit and connect it to terminals U-N and ***, respec-
ting the (U) phase, (N) neutral and earth in the case of
single phase units (230V~50Hz), or U-V-W phases, N
neutral and PE earth in three phase units (400V-3N~
50Hz).
AI
The i-SACS-S outdoor unit and the HM hydronic
module must be connected via a serial bus.
The connection is made by connecting terminals 15,
16 and 17 on the hydronic module and the terminal
block on the outdoor unit (i-SACS-S).
For further information, see the wiring diagrams shown
on the following pages.
For connection use shielded cables.
CONNECTION BETWEEN OUTDOOR UNIT AND INDOOR UNIT
For the power supply to the unit, there must be
no bridges between the terminal block on the
hydronic module (HM) and terminals P-Q-E on
the outdoor unit.

i-SACS 11
English
i-SACS-S
Size Power supply
(V-Ph-Hz)
Maximum values
FUSES
[A] (2)
Compressori Fan/fans Total
F.L.I. L.R.A. F.L.I. F.L.A. F.L.I. F.L.A. (1)
[kW] [A] [kW] [A] [kW] [A]
Size
Power supply
(V-Ph-Hz)
Maximum values
Pump
F.L.I. F.L.A.
[kW] [A]
Total (1)
FUSES
[A] (2)
F.L.I. F.L.A.
[kW] [A]
0011 230 ~1~50 2,47 28 0,13 0,6 2,6 13,0 20
0021 230 ~1~50 2,65 28 0,15 0,7 2,8 14,0 20
0031 230 ~1~50 4,29 28 0,31 1,4 4,6 23,0 25
0041 400 ~3~50 4,29 28 0,31 1,4 4,6 7,7 15
0051 400 ~3~50 5,7 28 0,30 1,6 6,0 10,0 15
0061 400 ~3~50 6,7 28 0,30 1,6 7,0 11,7 15
0011 230 ~1~50 0,2 1,0
0021 230 ~1~50 0,2 1,0
0031 230 ~1~50 0,2 1,0
0041 230 ~1~50 0,2 1,0
0051 230 ~1~50 0,2 1,0
0061 230 ~1~50 0,2 1,0
0,2 1,0 1,25
0,2 1,0 1,25
0,2 1,0 1,25
0,2 1,0 1,25
0,2 1,0 1,25
0,2 1,0 1,25
ELECTRICAL DATA
F.L.I. Maximum power input
F.L.A. Maximum current input
(1) Use these values when sizing protection switches and power cables.
(2) Glass fuses, 5x20mm 250V, slow-blow type “T”
HM

i-SACS
12 English
i-SACS-S 0011 - 0021 SINGLE-PHASE WIRING DIAGRAM
P-2
L N
CN2
3
4
RED RED
BLACK
WHI TE
WHI TE
RE D
BLUE
BLACK
RE D
TRANS.
BLUE
R1815B
CN4
CN12
E E V
CN6
WHITE
BLACK
WH I TE
ORANGE
RE D
RE D
P-1
CN1
BLACK
TRANS.
CN2
BLACK
RED
BLACK
BL UE
RE D
RED
P-5
P-4
P-3 P-6
BLUE
RE D
BLUE
BLUE
T 5
IPM
RED
YELLOW
RED
YELLOW
E
P
Q
N
L
LN
YELL OW/ G REEN
R2503
L202
WHITE
H
L
Compressor Main board
electronic expansion valve Outlet thermometer
pipe thermometer
outside air thermo- meter
IHigh pressure switch
Low pressure switch
to indoor unit
connector
power supply
filter
power board
fan
connector
heater
capacitor

i-SACS 13
English
i-SACS-S 0031 SINGLE-PHASE WIRING DIAGRAM
RED
Y/G
SV
N
L
T3 T4 T5EEV
YELLOW
ORANGE
E
P
Q
RED
YELLOW
Y/G
Y/G
RED
BLACK
RED
BLUE
RED
RED
BLACK
WHITE
WHITE
BLUE
RED BLUE
R1815
ORANGE
RED
RED
R1325C
REDRED
BLACK
TR
power board
IPM module
main board
cond1 heater
to indoor unit
use shielded cables only power supply
filter
rectifier 2
capacitor
central terminal rectifier 1
reattanza
impedance coil
impedance coil
code description
COND1 fan motor capacitor
CT1 current detector
COMP compressor
EEV electronic expansion valve
FM1 outdoor unit fan motor
H-PRO maximum pressure switch
L-PRO minimum pressure switch
RL1 relay
Heater sump heater
SV 4-way valve
TR transformer
T3 condenser thermometer
T4 outside air thermometer
T5 compressor discharge thermome-
ter
XT1, XT2 terminal

i-SACS
14 English
i-SACS-S 0041 THREE-PHASE WIRING DIAGRAM
RED
ORANGE
RED
L1
XT1 XT2
P
Q
( E)
IPM
N
L3
L2
POWER_RYHEAT 4-WAY FAN_H FAN_L
TRANS IN
CN39
T4
N
TRANS IN
CT1
L1
L2
L3
L1
L2
L3
CN16
BLUE
T5T3
S.V
1
5 3
4
2
BLACK
RED RED
RED
BLACK
RED
RED
BLACK
BLACK
RED
Y/G
Y/G
Y/G
PTC1 PTC2
KM1
CN42 CN48
CN46 CN47
CN44 CN45
CN43 CN20-CN22
CN18CN19
RED
YELLOW
BLUE
BLUE
BLACK
BROWN
GND
RED
Y/G
BLUE
BLACK
BLUE
A1 A2
2T1
4T2
6T3
1L 1 3L 2
5L 3
21 22
3N 380-41 5V
~
Code Descrizione COMP. compressor COND1, COND2, COND3
capacitor
CT1 current detector EEV electronic expansion valve Fan 1 outdoor unit fan motor Heater sump heater H-PRO maximum pressure switch L-PRO minimum pressure switch KM1 ac contactor PTC1, PTC2 PTC element REA impedance coil RADDR1, RADDR2 rectifier RES1, RES2 outlet resistor SV 4-way valve TRASF1, TRASF2 transformer T3 pipe thermometer T4 outside air thermometer T5 Gas thermometer XS1-XS2 connector XT1 4-way terminal XT2 3-way terminal
COND4
COND3
RADDR2
Heater
COND1
power supply unità out- door unit use shielded cables only
to indoor unit
filter board
TRASF1 TRASF2
Main board
RADDR1
COND5

i-SACS 15
English
i-SACS-S 0051 - 0061 THREE-PHASE WIRING DIAGRAM
L1
XT1 XT2
P
Q
( E)
IPM
N
L3
L2
POWER_RY
HEAT 4-WAY FAN_H FAN_L
TRANS IN
CN39
T4
EEV
N
CT1
L1
L2
L1
L2 L3
CN16
T5
T3
1
53
4
2
BLACK
RED
RED
RED
BLACK
BLACK
RED
Y/G
PTC2
KM1
CN42 CN48
CN46 CN47
CN44 CN45
CN43 CN20-CN22
CN18CN19
Y/G
Y/G Y/G
BROWN
BROWN
BLUE
BLUE
RED
RED
RED
RED
ORANGE
RED
RED
TRANS IN
L3
RED
RED
PTC1
BLACK
BLUE
GND
Y/G
Y/G
BLUE
A1 A2
2T1
4T2
6T3
1L 1 3L 2
5L 3
21 22
3N 380- 415V
~
code description COMP compressor COND1-COND5 capacitor CT1 current detector EEV electronic expansion valve VENT1-VENT2 outdoor unit fan motor Heater sump heater H-PRO maximum pressure switch L-PRO minimum pressure switch KM1 ac contactor PTC1, PTC2 PTC element REA impedance coil RADDR1, RADDR2 rectifier RES1, RES2 outlet resistor SV 4-way valve TRASF1, TRASF2 transformer T3 pipe thermometer T4 outside air thermometer T5 gas thermometer XS1, XS2 connectors XP1, XP2 connectors XT1 4-way terminal XT2 3-way terminal
to indoor unit
uses shielded cable only
power supply outdoor unit
COND2
COND1
RADDR2
heater
filter board
COND3
COND5
COND4
TRASF1 TRASF2
main board
VENT.1 VENT.2

i-SACS
16 English
HM WIRING DIAGRAM
A1 Noise suppression filter A2 Electronic control A3 Gateway A4 Remote control keyboard
BT1 Inler water plant temperature sensor BT2 Outlet water plant temperature
E1 Plant water pump F3 Flow switch F5 Water differential pressure switch
FU1 Plant water pump protection fuse
GN1 Green light (compressor ON)
KA1 Pump relay
KA2 Alarm relay
QF1
Frost heater
RD1 Red warning light (shut-off comp. signal)
R1
Refrigerator group circuit breaker
SA1
Timer and/or on - off switch
SA2 Heating - cooling switch TC1 230 / 12 VAC transformer TC2 230 / 12 VAC transformer
1 Not supplied
2 Optional
YV1 Gas on - off valve

i-SACS 17
English
GENERAL TECHNICAL DATA IA
i-SACS-S 0011 0021 0031 0041 0051 0061
Cooling capacity [kW] 4,4 5,6 7,2 8,5 11,2 12,8
Compressor power input [kW] 1,68 2,13 2,72 3,2 4,22 4,87
Heating capacity [kW] 5,6 7,2 9,0 10,6 13,9 15,9
Compressor power input [kW] 2,01 2,58 3,21 3,81 4,93 5,71
Compressors no. 1 1 1 1 1 1
Maximum allowable pressure PS L(4) MPa 2,0 2,0 2,0 2,0 2,0 2,0
H4,2 4,2 4,2 4,2 4,2 4,2
Power supply V/ph/Hz 230/1/50 400/3/50
Total power input (unit) kW 2,01 2,58 3,21 3,81 4,93 5,71
Electrical panel index of protection IP X4 X4 X4 X4 X4 X4
Fans nr 1112 2 2
Max. air flow m3/h 2400 3000 5000 5000 6000 6000
Noise level dB(A) 48 52 54 58 60
R410A refrigerant charge kg 1,65 2,20 3,35 2,90 3,85 3,85
KAF68D1 oil kg 0,80 0,80 - - - -
MEL36 oil kg - - 0,67 1,70 1,70 1,70
Operating weight kg 64 67 81 97 99 105
(1) outside air 35°C; evaporator water IN/OUT 12/7°C
(2) outside air 7°C; condenser water in/out 40/45°C
(3) at 1m in open field fan side
(4) the maximum and minimum operating pressure values refer
to the activation of the pressure switches
(5) the total power input does not include the water pump.
HM 0011 0021 0031 0041 0051 0061
Utility evaporator water flow-rate m3/h 0,75 0,97 1,24 1,46 1,97 2,2
Residual head kPa 63 63 62 62 93 94
Power supply V/ph/Hz 230/1/50
Minimum installation water content l/kW 2,0 2,0 2,5 2,5 3,0 3,0
Noise level dB(A) - - - - - -
Operating weight kg 34 34 35 37 38 40
Index of protection IP X4 X4 X4 X4 X4 X4

i-SACS
18 English
OPERATING LIMITS
cPf
cQ
cdp
0
1
1
1
12%
0,985
1,02
1,07
20%
0,98
1,04
1,11
28%
0,974
1,075
1,18
35%
0,97
1,11
1,22
40%
0,965
1,14
1,24
Thermal head min. max 3 ÷ 8
Water circuit pressure (bars) 1 ÷ 6
Max. storage temperature (°C) 63
ETHYLENE GLYCOL SOLUTIONS
Water and ethylene glycol solutions used as a heat
carrier in the place of water reduce the performance of
the unit.
Multiply the performance figures by the values given in
the following table.
0 -5 -10 -15 -20 -25
Freezing point (°C)
Percentage of ethylene glycol in weight
cPf: cooling capacity correction factor
cQ: flow rate correction factor
cdp: pressure drop correction factor
f1 capacity correction factor
fk1 compressor power input correction factor
fx1 total power input correction factor
FOULING FACTORS
The performance data given refer to conditions with
clean evaporator plates (fouling factor=1).
For different fouling factors, multiply the figures in the
performance tables by the coefficient given in the fol-
lowing table.
AI
4,4 x 10-5
0,86 x 10-4
1,72 x10-4
-
0,96
0,93
-
0,99
0,98
-
0,99
0,98
Fouling factors
(m2°C/W) f1
Evaporator
fk1 fx1
OUTSIDE TEMPERATURE OUTSIDE TEMPERATURE
INSTALLATION SIDE OUTLET TEMPERATURE INSTALLATION SIDE OUTLET TEMPERATURE
°C
°C
°C
°C
+20
+5
-10
+35 +50
+8
+43
+5 +18
IN HEATING OPERATION
IN COOLING OPERATION

i-SACS 19
English
-The water valves are open;
-Electrical connections have been carried out correctly
-Voltage is within a tolerance of 10% of the rated vo
tage for the unit;
-The unit is correctly earthed;
-All electrical connections are tight and all water co
nections have been carried out correctly.
The unit must be started up for the first time
with standard settings. Set Point values may be
modified only after testing has been completed.
Before starting up, power up the unit for at least
two hours to the end to allow the oil in the com-
pressor sump to heat up.
REFRIGERANT QUANTITY
Calculate the quantity of refrigerant to be added according to the diameter and the length of the connection
pipes between i-SACS-S and HM
CHECKING AND STARTING UP THE UNIT A
PREPARING FOR FIRST START UP
Restarting after shutting down for long periods
The unit must be started up for the first time by the
Technical Service (where envisaged in the supply
contract).
Before starting up the chillers, make sure that:
-All safety conditions have been respected;
-The chiller is adequately fixed to the surface it rests
on;
-Clearances have been respected
-Water connections have been carried out as indicate
in the instruction manual;
-The water circuit is filled and vented. If emptying after
heating operation beware of the water temperature;
;
HM
Maximum pipe length
Maximum height difference allowed
Allowed value
Maximum pipe length
Maximum height difference allowed
15 m
8 m
If the difference in height requires, check the pos-
sibility of installing a drain trap in the refrigerant
circuit
i-SACS-S
Pipe diameter
Quantity of refrigerant to add
per metre of pipe
9.53
12.7
15.9
19.0
22.0
0.060kg
0.110kg
0.190kg
0.290kg
0.380kg
6.3 05.022kg
Ø
Ø
Ø
Ø
Ø
Ø

i-SACS
20 English
SHUTTING DOWN FOR LONG PERIODS
If there is a possibility that the outside tempe-
rature may drop below zero, there is a risk of
freezing.
The water circuit MUST BE EMPTIED AND
CLOSED (if emptying after heating operation
beware of the water temperature) or antifreeze
must be added in the proportion recommended
by the manufacturer.
A
Never perform any cleaning operations before
having disconnected the unit from the mains power
supply.
Check for voltage before proceeding.
CHEMICAL WASHING
It is recommended to chemically flush the plate heat
exchanger after every 3 years of operation.
For instructions on how to carry out this operation, call
the toll free number.
REFRIGERANT GAS CONTENT
The chillers are filled with R410A refrigerant gas and
tested in the factory.
In normal conditions, there should be no need for the
Technical Service to intervene to check the refrige-
rant gas.
However, over time, small leaks may develop at the
joints leading to loss of refrigerant and draining of
the circuit, causing the unit to function poorly.
In this case, the leaks of refrigerant must be identified
and repaired and the refrigerant circuit recharged.
Proceed as follows:
-Empty and dry the entire refrigerant circuit using a
vacuum pump connected to the low and high pres-
sure tap until the vacuometer reads about 10 Pa.
Wait a couple of minutes and check that this value
does not rise to more than 50 Pa.
-Connect the refrigerant gas cylinder or a filling cylin-
der to the low pressure line pressure gauge connec-
tion
- Fill with the quantity of refrigerant gas indicated on
the rating plate of the unit;
- Always check the superheating and subcooling
values, which, in normal appliance operating condi-
tions, should be between 4 and 8 °C.
In the event of partial leaks, the circuit must
be completely emptied before being recharged.
The R410A refrigerant must only be charged
in the liquid state.
Operating conditions other than rated condi-
tions may produce considerably different
values.
Seal testing or identification of leaks must only
be carried out using R410A refrigerant gas,
checking with a suitable leak detector.
The refrigerant circuit must not be charged
with a refrigerant other than that indicated.
Oxygen, acetylene or other inflammable or poi-
sonous gases must never be used in the refri-
gerant circuit as they may cause explosion or
poisoning.
Oils other than those indicated must not be
used.
The use of a different oil may cause serious
damage to the compressor.
ROUTINE MAINTENANCE
Never perform any cleaning operations before
having disconnected the unit from the mains power
supply.
Check for voltage before proceeding.
Regular maintenance is fundamental to maintain the
efficiency of the unit both in terms of operation and
energy consumption.
The Technical Service maintenance plan must be
observed, with an annual service which includes the
following operations and checks:
-Filling of the water circuit;
-Presence of air bubbles in the water circuit;
- Efficiency of safety devices;
-Power supply voltage;
- Electrical power input;
-Tightness of electrical and water connections;
-Refrigerant charge
-Cleaning of the water filter
-Operation and cleaning of the flow switch
-Condition of the compressor contactor;
-Efficiency of the plate heat exchanger resistor;
-Verification of operating pressure, superheating and
subcooling
-Efficiency of the compressor heater
-Cleaning of the finned coil
-Cleaning of the fan grills
For units installed near the sea, the intervals between
maintenance should be halved.
SPECIAL MAINTENANCE
A
A