CLIMAVENETA i-SACS-S 0011, i-SACS-S 0031, i-SACS-S 0021, i-SACS-S 0041, i-SACS-S 0051 Installation - User - Maintenance Manual

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

2 English

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

U

I

A

UAI

A

A

A

A

User

Installer

Assistance

Important

Prohibition

Danger voltage

Danger moving blades

Danger high temperatures

i-SACS

3English

GENERAL WARNINGS

U

AI

These appliances have been designed to chill

and/or heat water and must be used in applica­tions compatible with their performance characte­ristics; these appliances are designed for resi­dential 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 car­ried 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 autho­rised by the Company (where specified in the sup­ply 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 unda­maged.
If damage or missing components are noted, indi­cate 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

U

AI

This publication is the sole property of Climave­neta. Any reproduction or disclosure of such is
strictly prohibited without the written authorisa-

tion of Climaveneta.

This document has been prepared with ma­ximum care and attention paid to the content
shown. Nonetheless, Climaveneta waives all lia­bility deriving from the use of such document.

Read this document carefully.
All work must be performed, components selec­ted and materials used in complete accordan­ce with the legislation in force in material in the
country concerned, and considering the opera­ting 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

U

A

I

When operating equipment involving the use of elec­tricity 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 befo­re 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 (cardbo­ard, staples, plastic bags, etc.) as they may
represent a hazard.

i-SACS

4

English

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 main­tenance 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 cor­respond with the value indicated on the respec­tive units. All units must be earthed in conformi­ty 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 pro­ceeding.

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

I

A

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 installa tion, 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 limi­ted 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 rela­tive documentation for assembly instructions and tech­nical data.

Dimensions with packaging

Hole diam. Ø22

H

P

L

H

P

L

i-SACS

6 English

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 (inver­ter).

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 preven­tion 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 thermosta­tic 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 con­tact with the water made from corrosion resistant
materials, extra wear ring on the impeller, built-in
capacitor for high starting torque and automatic ven­ting 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

A 335 302 340 340 340 340
B 695 860 860 860 1245 1245
C 845 895 990 990 940 940
D 560 590 625 600 600

Dimension [mm] 0011 0021 0031 0041 0051 0061

i-SACS-S

HM

A 250 250 250 250 250 250

B 815 815 815 815 815 815

C 340 340 340 340 340 340

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

8

English

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 distribu­tion 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 ade­quately 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 instal­led 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 evapora­tor 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 evapora­tor 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 cir­cuit 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

B 63 63 63 63 63 63

C 215,5 215,5 215,5 215,5 215,5 215,5

D 49,5 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 top­ping up must be treated with appropriate treat­ment 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.

D

C

A B

REFRIGERANT FITTINGS

INSTALLATION OUT

INSTALLATION IN

i-SACS

10

English

ELECTRICAL CONNECTIONS

The i-SACS-S units and corresponding HM hydro­nic 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 per­sonnel in compliance with the legislation in force.

For all electrical work, refer to the electrical wiring dia­grams 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 electri­cal specications below, also bearing in mind the pos­sible 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 legisla­tion 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 CEI­EN 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 ***, respec­ting 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

BLA C K

WHI TE

WHI TE

RE D

BLUE

BLAC K

RE D

TRANS.

BLUE

R1815B

CN4

CN12

EE V

CN6

WHITE

BLAC K

WH I TE

ORANGE

RE D

RE D

P-1

CN1

BLA C K

TRANS.

CN2

BLACK

RE D

BLA C K

BL UE

RE D

RED

P-5

P- 4

P-3

P-6

BLUE

RE D

BLUE

BLUE

T 5

IPM

RED

YEL L OW

RED

YELLOW

E

P

Q

N

L

L

N

YELL OW/ G REEN

R2 503

L 2 0 2

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 A 2

2T1

4T2

6T3

1L1

3L2

5L3

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

5

342

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

1L1

3L2

5L3

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

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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

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English

GENERAL TECHNICAL DATA

I

A

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

H

4,2 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

1 1 1 2 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

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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 fol­lowing 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

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-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 com­pressor 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 pos­sibility 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

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SHUTTING DOWN FOR LONG PERIODS

If there is a possibility that the outside tempe­rature 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 refrige­rant 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 pres­sure 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 cylin­der to the low pressure line pressure gauge connec­tion

- 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 condi­tions, 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 condi­ti ons may prod uce conside rably di fferen t
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 poi­sonous gases must never be used in the refri­gerant 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

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English

DISPLAYING ALARMS

A

* The flow switch alarm is reset automatically if it remains active for less than 20 sec, or manually for more 20 sec and in any
case when activated twice in 1 hour
** Automatic for 3 activations, manual when activated four times in 1 hour

Display Alarm description

E0 EEPROM error

E2 Communication error between outdoor unit and indoor unit

E3 Communication error on the outdoor unit

E4 Outside air temperature sensor error

E5 Compressor voltage protection

P1 High pressure protection

P2 Low pressure protection

P3 Compressor current protection

P4 Compressor discharge temperature protection

P5 Outdoor condenser high temperature protection

P6 Maximum temperature protection

LIST OF ALARMS ON i-SACS-S CONTROLLER

To see the display indicating the error codes, remove the top cover on the i-SACS-S unit.
The error code is shown on the display on the electronic board.

LIST OF ALARMS ON HM CONTROLLER

Codice Descrizione allarme Tipo Azione

AI01 Compressor inverter current protec-

tion

Auto Compressor off

AI02 Compressor inverter voltage protec-

tion

Auto Compressor off

AI03 Inverter phase sequence Auto Compressor off

AI04 Outside probe fault error Auto Compressor off

AL01 Low intake temperature Segnalaz. Alarm icon on display on

AL02 High intake temperature Segnalaz. Alarm icon on display on

AL05 Evaporator flow switch A/M* Compressor off. The pump continues operating.

AL81 Evaporator frost protection Man. Compressor off

AC01 Compressor operating hours Auto Alarm icon on display on

AP01 Pump operating hours Auto Alarm icon on display on

ES01 Installation inlet temp. probe malfun-

ction or disconnected

Auto Compressor off

ES02 Installation outlet temp. probe mal-

function or disconnected

Auto Compressor off

EN01 Communication alarm inside the

hydronic module

A/M** Alarm icon on display on

EN02 Communication alarm between

hydronic module and consensing
unit.

A/M**

Alarm icon on display on

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English

Check

Replace the component

Check

Check

Check

Il compressore si ferma per
intervento delle protezioni

Pressione mandata eccessiva
Pressione aspirazione bassa
Tensione alimentazione bassa
Collegamenti elettrici mal serrati
Funzionamento fuori dei limiti ammessi

Faulty operation of pressure switches

Check supply voltage

Check electrical insulation of win­dings

Thermal protector tripped

Insufficient capacity

Insufficient refrigerant
Appliance undersized
Operation outside recommended limits

Noise and vibrations

Contact between metal bodies

Repair

Weak foundations

Tighten screws

Loose screws

Compressor noisy

Liquid returning to compressor

Inadequate fastening

TROUBLE SHOOTING

A

Power failure (condensing unit and hydronic module)

Supply voltage too low

Mains switch in OFF position
Remote switch (if featured) in OFF position
Control panel set to OFF

-Check presence of voltage

-Check safety systems upstre­am of the appliance

Check power line

Switch ON

Contactor coil faulty
Electronic boards faulty
Start-up capacitor faulty (if featured)
Compressor faulty

Replace the component

FAULT CAUSE SOLUTION

The unit doesn’t start

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English

High discharge pressure

(greater than 3.5 MPa)

High outside air temperature

High water inlet temperature

Insufficient air flow

Insufficient water flow

Check

Check fan operation

Check pump operation

Abnormal fan operation

Check

Air in water circuit

Vent

Excessive refrigerant content

Check

FAULT CAUSE SOLUTION

Low suction pressure (less
than 0.62 MPa)

Low water inlet temperature
Low inflow air temperature
Thermostatic expansion valve faulty or blocked
Blocked water filter
Blocked plate heat exchanger

Check

Low discharge pressure (less
than 1.8 MPa)

Low outside air temperature

Low water inlet temperature

Check

Air in water circuit

Vent

Insufficient refrigerant content

Check

Humidity in the refrigerant circuit (liquid sight glass)

Empty and refill

Abnormal fan operation

Check

High suction pressure (greater
than 1.7 MPa)

High outside air temperature

High water inlet temperature

Thermostatic expansion valve malfunction

Check

i-SACS

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UP: scroll the display and programming menu, scroll parameters, in parameter pro-

gramming mode.

DOWN: scroll the display and programming menu, scroll parameters, in parameter

programming mode.

SET: in programming mode confirms of the value; otherwise activated the selected

function.

The SET button, if held for around 2 seconds, accessed the main menu.

If displaying an alarm page, pressed for around 2 seconds resets the alarm.

If displaying the alarm pages, when pressed scrolls the active alarms.

The button also has the ENTER function for access to different levels of program-

ming.

The following icons are also used

Heating icon: identifies heating operating mode (heat pump).

Cooling icon: identifies cooling operating mode (chiller).

Fan icon: identifies compressor + fan status. I

f on steady the compressor is operating, if flashing an on/off timer is active.

CONTROLLER NAVIGATION MENU

A

The controller features a user interface with display, made up of four 7-segment digits and 15 icons.
The keypad has 4 buttons for navigating inside the display and programming menus:

Defrost icon

Unit of measure

Alarm icon

Icona Pompa

Fan icon

Cooling icon

Heating icon

Electric frost protection heater icon

Exchanger water inlet probe

Exchanger water outlet probe

Standby icon

STANDBY: in programming mode exits the menu without saving the changes

made.

The STANDBY button, if held for around 2 seconds, switches the unit on/off.

If pressed on the main page, accesses the list of all the active alarms.

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Pump icon: if on steady the pump is on, if flashing fast signals that an on timer is

active.

If flashing slow signals that the shutdown of the water pump is delayed during

changeover or when shutting down the unit.

Alarm icon: if on, alarms are active. Flashing signals a new alarm that has not yet

been acknowledged.

When the unit is off, if there are alarms the icon flashes.

Maintenance icon: identifies a maintenance request. If on steady, the compressor
has been started in manual mode, if flashing the compressor or pump has excee-

ded the set number of operating hours.

Standby icon: associated with the STANDBY button, identifies the
status of the unit:

- Off: unit on•

- On: unit off but powered (unit in standby with power on) •

- Flashing slow: unit off from digital input•

- Flashing fast: unit off from supervisor (if featured)•

Defrost icon: if on indicates that in the condensing unit is running a defrost.

°C/°F icon: indicates the temperature unit of measure.

Electric frost protection heater icon: identifies the status of the frost protection con-

trol and alarm.

If on the heaters are active, if flashing the alarm is active.

DISPOSAL

A

The unit must be disposed of according to the legisla­tion in force in the country concerned.

USEFUL INFORMATION

U I A

For information on technical assistance and obtaining spare parts, contact:

TECHNICAL SERVICE DEPARTMENT
CLIMAVENETA HOME SYSTEM SRL ROOM AIR-CONDITIONING
via. L. Seitz, 47 - 31100 Treviso (ITALY)

www.climaveneta.it
[e-mail]

COD. 5778029900