Robur GA Line ACF Series User manual

GA Line ACFSeries
Gas fired absorption chiller
for cooling medium-large areas
Natural gas/LPG fired
Installation, use and
maintenance manual

EDITION: 04/2012
Revision: H
Code: D-LBR3 7
This manual has been drawn up and printed by Robur S.p.A.; whole or partial
reproduction of this manual is prohibited.
The original is filed at Robur S.p.A.
Any use of this manual other than for personal consultation must be previously authorised
by Robur S.p.A.
The rights of those who have legitimately filed the registered trademarks contained within
this publication are not affected.
With the aim of continuously improving the quality of its products, Robur S.p.A. reserves
the right to modify the data and contents of this manual without prior notice.

Foreward
Ed. 04/2012 I
FOREWARD
This manual is designed to be an installation and user’s guide for the Robur series
ACF60-00 absorption chiller.
This manual especially applies to the plumbing and electrical installers for the hook-up of
the ACF and the initial configuration, and also for the end user regarding its use.
This manual also has a section regarding the operations that must be done before the first
start-up and the primary maintenance operations.
References
If the appliance is to be connected to a Direct Digital Controller (DDC), refer to the
following documentation with which it is supplied:
Installation technician manual - book 1: for installation and service technicians.
Final user manual - book 2: for the user of the DDC.
Definitions, terms and icons
Appliance: this term indicates the gas chiller with absorption cooling cycle and air
condenser/absorber - serie: ACF, line: GA.
DDC: digital control panel (Direct Digital Controller).
CAT (or TAC): Technical Assistance Centre (authorised by Robur S.p.A.).
Icon Definitions
The icons present in the margins of the manual have the following meanings.
Danger
Warning
Note
Begin operational procedure
Reference to another part of the manual or to a different
manual/booklet
Table 1 – Descriptive Icons

Table of contents
Ed. 04/2012 1
TA LE OF CONTENTS
SECTION 1 GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS..............3
1.1 SAFETY WARNINGS .........................................................................................................................3
1.2 GENERAL INFORMATION.................................................................................................................
1.3 OPERATION OF THE ACF60-00 .......................................................................................................8
1.4 TECHNICAL SPECIFICATIONS.......................................................................................................11
1. ACF DIMENSIONS AND SERVICE PANELS ..................................................................................26
SECTION 2 END USER ..................................................................................................29
2.1 COMMISSIONING (AND SHUTDOWN) OF THE ACF ....................................................................29
2.2 ON-BOARD ELECTRONICS ............................................................................................................30
2.3 SETTING OF OPERATING PARAMETERS ....................................................................................3
2.4 RESETTING......................................................................................................................................3
2. WARNING AND ERROR CODES ....................................................................................................37
2.6 PROLONGED INACTIVITY ..............................................................................................................38
SECTION 3 PLUM ING INSTALLER.............................................................................39
3.1 GENERAL INSTALLATION PRINCIPLES........................................................................................39
3.2 POSITIONING OF THE ACF60-00 ...................................................................................................40
3.3 WATER CONNECTIONS..................................................................................................................42
3.4 GAS SUPPLY SYSTEM....................................................................................................................47
3. FILLING OF THE WATER CIRCUIT.................................................................................................48
3.6 SETTING OF THE WATER PARAMETERS .................................................................................... 0
SECTION 4 ELECTRICAL INSTALLER .........................................................................53
4.1 OPERATION WITH CONTROL SWITCH......................................................................................... 3
4.2 APPLIANCE PUMP CONTROL ........................................................................................................
4.3 PUMP AND ELECTRICAL WIRING DIAGRAMS ............................................................................. 6
4.4 USE OF A DIRECT DIGITAL CONTROLLER (DDC) .......................................................................60
4. HOW TO RESET THE FLAME CONTROLLER FROM REMOTE ...................................................72
SECTION 5 INITIAL STARTUP AND MAINTENANCE ..................................................73
.1 INITIAL STARTUP AND ADJUSTING ..............................................................................................73
.2 GAS CONVERSION..........................................................................................................................76
.3 MAINTENANCE ................................................................................................................................79
SECTION 6 ACCESSORIES...........................................................................................81
APPENDIX .................................................................................................................87
DECLARATION OF CONFORMITY.........................................................................................................87
APPENDIX....................................................................................................................... 83
WARNINGS AND ERRORS............................................................................................................................83
TABLE OF OPERATING CODES ...................................................................................................................83

ACF60-00 – Installation, User’s and Maintenance Manual
2 Ed. 04/2012

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 3
SECTION 1 GENERAL INFORMATION AND TECHNICAL
SPECIFICATIONS
In this section you will find the general instructions to follow for the installation of the ACF,
and outlines on the running of the unit, constructive characteristics and the technical data.
1.1 SAFETY WARNINGS
Packing items (plastic bags, polystyrene foam, nails, etc.) must be kept out of the
reach of children, as they are potentially dangerous.
The appliance must only be used for the purposes for which it has been designed.
Any other use is considered inappropriate and therefore dangerous. The
manufacturer does not accept any contractual or extra-contractual liability for any
damage caused by improper use of the appliance.
The unit uses a water/ammoniac absorption cycle for cold water production. The
ammoniac is in water solution inside a sealed circuit tested for tightness by the
manufacturer. In case of coolant leaks, switch off the electrical power and gas
supplies only if this can be done in total safety. Contact your Authorised Service
Centre.
Frequent topping up of the plumbing circuit with water can result in damage due to
scale and corrosion, depending on the quality of the water being used. Make sure
the system is hermetically sealed and that the expansion tank is operational.
Concentrations of chlorides or free chlorine in the circuit above the values given in
Table 20 page 43 will damage the unit's water/ammoniac exchanger.
Close the gas supply cock before working on the gas circuit. On completing work
on the gas circuit, run a seal test as required by established regulations.
Do not operate the appliance if dangerous conditions exist: odour of gas in the grid
or near the appliance problems with the electrical/gas grid or hydraulic circuitparts
of the appliance submerged in water or otherwise damagedcontrols or safety
components by passed or defective. In these cases, ask for assistance to
professionally qualified personnel.

ACF60-00 – Installation, User’s and Maintenance Manual
4 Ed. 04/2012
If you smell gas:
• do not use electrical devices such as telephones, multimeters or other
equipment that can cause sparks next to the appliance;
• shut off gas supply closing the isolation valve;
• cut off electrical power opening the main breaker upstream of the appliance (to
be provided by the electrical installer in an appropriate panel);
• ask for assistance to professionally qualified personnel from a telephone distant
from the appliance.
Moving parts, also during the unit's on/off cycles. Do not remove guards. Make sure
the appliance cannot be started up inadvertently.
POISONING HAZARD
Make sure the combusted gas circuit components are tight and constructed in
conformity with established regulations. On conclusion of any work on these parts,
make sure the seal is tight.
URN HAZARD
The appliance contains numerous hot parts. If necessary, contact your Authorised
Service Centre.
The appliance has a sealed circuit classified as pressure equipment, i.e. with
internal pressure higher than atmospheric pressure. The fluids contained in the
sealed circuits are harmful if swallowed or inhaled, or if they come into contact with
the skin. Do not carry out any operation on the sealed circuit or on its valves.
ELECTROCUTION HAZARD
• Use only regulatory components for the electrical hookup, as specified by the
manufacturer.
• Disconnect the electrical power supply before working on the appliance's
internal electrical equipment (safety devices, PCB's, motors, etc.).
• Make sure the appliance cannot be started up inadvertently.
The electrical safety of the appliance is guaranteed only when it is correctly
connected to an efficient grounding system, executed in accordance with current
safety regulations.
DAMAGE TO THE SYSTEM DUE TO AGGRESSIVE SU STANCES IN THE AIR
SUPPLY
Hydrogenated hydrocarbons, which contain chlorine and fluorine compounds, will
increase the corrosion of the unit.
Make sure the air supply is free of aggressive substances.

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012
EXPLOSIVE/FLAMMA LE MATERIALS HAZARD
Do not use or store flammable materials (paper, solvents, paint, etc.) in the vicinity
of the appliance.
SUGGESTIONS FOR THE CLIENT
Stipulate a maintenance contract with an authorised specialist contractor for the
annual inspection of the appliance and maintenance when needed.
Maintenance and repairs may only be done a contractor legally authorised to work
on gas appliances and equipment.
Only accept and use original spare parts.
1.2 GENERAL INFORMATION
Conformity to CE standards
This manual is an integral and essential part of the product and must be given to the end
user along with the ACF.
The ACF is certified according to EU standards and conforms to the basic requirements of
the following regulations:
Gas directive: 90/936/CEE
Electromagnetic compatibility directive 89/336/CEE
Low voltage directive 73/23/CEE
Pressurized Equipment Directive (PED) 97/23/CEE
The operational conditions and authorized areas of use are reported in paragraph 1.4
TECHNICAL SPECIFICATIONS on page 11.
Installation and regulatory references
When the appliance arrives at the installation site, before beginning the stages requi-red
to move it in order to position it on the site, perform a visual check to ascertain that there
are no evident signs of breakage or damage to the packaging or to the external panels,
which would be signs that damage occurred during transport.
Packing materials must be removed only after the appliance has been positioned
on site. After removing the packing materials, ensure that the appliance is intact
and complete.
Installation of the appliance may only be carried out by firms that are qualified in
ac-cordance with current legislation in the country of installation, i.e. by professionally
qualified personnel.
“Professionally qualified personnel” means personnel with specific technical
compe-tence in the sector of heating/cooling plants and gas appliances.
Installation of the appliance must be carried out in compliance with current local and
national regulations regarding the design, installation and maintenance of heating and
cooling plants in accordance with the manufacturer's instructions.
In particular, the following current laws must be respected with regard to:

ACF60-00 – Installation, User’s and Maintenance Manual
6 Ed. 04/2012
Natural gas equipment
Electrically powered equipment
Any other standard that regulates the installation of air conditioning devices with gaseous
fuel.
It excludes the manufacturer from any contractual and non contractual obligations
for damages caused to people, animals, or things due to incorrect installation and
improper use of the ACF and also by not observing the indications and instructions
provided by the manufacturer.
Once the appliance is installed
The installer must provide the owner with a Declaration stating that the installation has
been completed in compliance with state-of-the-art practices, current national and local
regulations, and recommendations by the manufacturer.
Before contacting your authorised Robur Technical Assistance Centre (TAC) for the ini-tial
activation, the firm must ensure that:
• that the electric and gas supply ratings are the same as those on the data plate
• the gas supply system and the water distribution system are sealed
• the gas supplied to the appliance is of the type for which it is designed
• the pressure of the gas supplied falls within the range of values specified by the
manufacturer
• the gas and electricity supply systems are correctly rated for the capacity required by
the appliance and that they are equipped with all safety and control devices
prescribed by current regulations.
Check that no safety and control devices are excluded, by-passed or not properly
working.
First start-up procedure
The entire procedure for the first activation of the appliance must be carried out
exclu-sively by an authorized Robur Technical Assistance Centre (TAC) and according to
the instructions supplied by the manufacturer.
To carry out entire procedure correctly, follow the instructions in Paragraph “INITIAL
STARTUP AND ADJUSTING” page 73.
Contact your local Authorised Robur Technical Assistance Centre (TAC). To find
out who your local TAC is, contact Robur S.p.A. (tel. [phone]). The
guarantee could be voided if the initial activation is not carried out (and
validated) by a Robur TAC.

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 7
Operation and maintenance of the appliance
To ensure the correct operation of the appliance and to avoid failures, control of the
switching on and off of the appliance must be carried out exclusively via a switch located
on the on/off command circuit.
If the appliance is to be connected to a Direct Digital Controller (DDC, available as an
accessory), control of activating and deactivating the appliance must be performed
exclusively through the DDC itself.
The appliance must never normally be switched on and off by shutting off the
power supply upstream of the Controle Device (DDC or consent switch) before
having used the latter first and waited for the shutdown cycle to end (approximately
7 minutes).
If the appliance fails to operate correctly, with the consequent indication of the Machine
code, follow the instructions of APPENDIX page 83.
In the event of failure of the appliance and/or breakage of any component, do not
attempt to repair and/or restore operation; proceed as follows:
- shut off the appliance immediately (if possible and if no dangerous condition
exists) through the controls (DDC or permissive switch) and wait for the end of
the cooling down cycle (around 7 minutes);
- remove electrical power by shutting off the main power switch and close the gas
valve
If it is decided not to use the appliance for a prolonged period, disconnect the appliance
following the instructions provided in Paragraph PROLONGED INACTIVITY page 38.
Correct routine maintenance ensures the efficiency and good operation of the appliance
over time.
Carry out maintenance operations according to the instructions supplied by the
manufacturer.
Trust the maintenance of the internal components of the ACF to a Qualified Service
Engineer, who will perform the operations following the manufacturer’s instructions.
Any repair of the appliance must be carried out by an authorised Robur Technical
Assistance Centre (TAC), using only original parts.
Failure to observe the indications above may compromise the operation and safety
of the appliance, and may invalidate warranty.
If the appliance is to be disposed of, contact Robur S.p.A. for its correct disposal.
If the appliance is to be sold or transferred to another owner, ensure that this
“Installation, user and maintenance manual” is handed over to the new owner and
installation technician.

ACF60-00 – Installation, User’s and Maintenance Manual
8 Ed. 04/2012
1.3 OPERATION OF THE ACF60-00
The ACF60-00 is a gas chiller with absorption cooling cycle and air condenser/absorber.
The liquid coolant is ammonia; the cooling cycle is run by thermal energy supplied by the
combustion of natural gas, and is therefore characterized as having a limited need for
electrical energy.
The ACF runs on either natural gas or LPG and requires an electrical power supply of 230
V 1N – 0 Hz.
The evacuating of combustion products is done using the exhaust cooling air exiting the
condenser by means of a fan.
Constructive Characteristics
The ACF chiller is available in versions:
ACF60-00, for air conditioning/refrigeration applications in civil-commercial and industrial
environments. It has a nominal cooling capacity of 17.72 kW. Data Table: Table 2, page
11.
ACF60-00 TK, “Technological version”. Designed for air-conditioning/refrigeration in
process applications and systems; it is specifically designed to run without interruption 24
hours a day. It has a nominal cooling capacity of 17.72 kW. Data Table: Table 4, page 13.
ACF60-00 HT, “High Temperature air”. Designed to operate in locations that have high
ambient temperatures. It has a nominal cooling capacity of 17.12 kW. Data Table: Table
6, page 1 .
ACF60-00 LB, “Low temperature”. Designed to provide refrigerated water down to -10°C.
It has a nominal cooling capacity of 13.30 kW. Data Table: Table 8, page 17.
ACF60-00 HR, “Heat Recovery”. This is an ACF60-00 with a heat recovery system able to
provide 17.72 kW of nominal cooling capacity when operating without the heat recovery
system. With the heat recovery system, it can obtain a cooling capacity of 17.93 kW, at
the same time providing 2 .3 kW of heating capacity. Data Table: Table 11, page 20.
The indicated tables only provide some of the main technical data, for coefficients
and other information refer to paragraph 1.4 TECHNICAL SPECIFICATIONS, on
page 11.
All versions can be supplied with Robur grey or stainless steel panelling (for stainless
steel versions the symbol is “I”, ex. ACF60-00 TK I), with standard or silenced fan (for
silenced versions the symbol is “S”, ex. ACF60-00 TK S). The silent fan has a specially
designed nozzle, motor and impeller for less noise emission (See 1.4 TECHNICAL
SPECIFICATIONS, page 11), and is also available as a replacement.
For information on replacement parts contact Robur S.p.A. at [phone].
Safety and Control Devices
The ACF is controlled by the electronic circuit board with an S61 microprocessor, located
in the electrical panel. This also functions as a monitor which displays messages and

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 9
machine codes during operation, see “ON-BOARD ELECTRONICS” on page 30, and
“TABLE OF OPERATING CODES “ on page 83.
Figure 1 – The S61 electronic circuit board. The Display, Encoder and CAN-BUS Port
Programming, control and monitoring of the ACF are done through the display and the
circuit board encoder; the encoder is the knob shown in Figure 1, letter ”B”, which can be
turned or pushed.
For its use, go to the “Display and Knob (encoder)” on page 32. The CAN BUS port allows
one or more ACF’s to be connected to a Direct Digital Controller (DDC).
The DDC, available as an option, monitors and controls each ACF in a more precise
manner, and can support and manage up to 16 chillers on a water circuit, regulating start-
up in relation to the requested need.
Figure 2 – Direct Digital Controller (DDC)
For the connection of a DDC to the ACF, go to the “APPLIANCE PUMP CONTROL”
paragraph on page .
The ACF’s include the following:
• cooling circuit in steel, treated on the outside with epoxy paint;
• multigas pre-mixing burner equipped with ignition and flame detection managed by
an electronic control unit;
KEY
A 4 digit DISPLAY for the visualization of the data and operational codes
KNOB (encoder) for navigating and selecting of operational data
C CAN PORT for the connection of the CAN-BUS network cable
A
C

ACF60-00 – Installation, User’s and Maintenance Manual
10 Ed. 04/2012
• air-based heat exchanger with single-position finned coil, manufactured in steel
tubing and aluminium fins;
• water-based exchanger of the shell-and-tube type in titanium alloyed stainless steel,
externally insulated;
• variable-flow microprocessor-controlled axial fan;
• control and safety devices:
- S61 electronic board with integrated microprocessor, LCD display and encoder
(in Figure 1);
- plant water flow switch;
- manually resettable generator limit thermostat;
- differential exhaust gas pressure switch on the combustion circuit;
- automatically resettable exhaust gas thermostat;
- pressure safety valve on the sealed circuit;
- by-pass valve, between the high and low pressure circuits;
- plant water antifreeze function;
- ionisation-based flame control unit;
- gas electrovalve with double shutter;
- heat recovery circulator pump relay (only for HR model)

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 11
1.4 TECHNICAL SPECIFICATIONS
ACF60-00, ACF60-00 S - TECHNICAL SPECIFICATIONS
SIZE
UNIT ACF60-00
ACF60-00 S
OPERATIONAL CHARACTERISTICS
NOMINAL HEAT CAPACITY AT THE BURNER
(1)
NOMINAL
EFFECTIVE kW 2 .30 2 .03
COOLING CAPACITY
(2)
kW 17.72
CHILLED WATER FLOW RATE
NOMINAL
MINIMUM
MAXIMUM
L/hr
2770
2 00
3200
m
3
/h
GAS CONSUMPTION NAT. GAS
(3)
L.P.G.
(4)
NOMINAL
EFFECTIVE
NOMINAL
EFFECTIVE
kg/hr
2.68
2.6
1.96
1.94
NOISE LEVEL
( ) (6)
at 10 meters MAXIMUM dB(A) 4 49
FUNCTIONAL RANGE (T
OUTSIDE AIR
) MINIMUM
MAXIMUM °C 0
+4
ACF INTAKE WATER TEMPERATURE MAXIMUM °C +4
OUTLET WATER TEMPERATURE
(7)
MINIMUM °C +3
ELECTRICAL CHARACTERISTICS
VOLTAGE
V, phases,
Neutral,
Hz
230 1N 0
TOTAL ELECTRICAL LOAD
(8)
W 820 870
WATER CONNECTIONS
WATER DELIVERY AND RETURN “ 1 ¼ “F
GAS “ ¾ “F
ACF INTERNAL PRESSURE DROP
(9)
NOMINAL bar 0,29
MAXIMUM WORKING PRESSURE bar 4
MAXIMUM FILLING PRESSURE bar 3
PHYSICAL SPECIFICATIONS
OPERATIONAL WEIGHT kg 340 360
INTERNAL WATER CAPACITY OF ACF L 3
WIDTH 8 0
DEPTH 1230 DIMENSIONS
(10)
HEIGHT
mm
1290 1 40
(9)
Table 2 – ACF60-00 and ACF60-00 S Technical Specifications
Remarks
(1)
Nominal conditions: 1013 mbar, 1 °C; Effective conditions: 1000 mbar, 20 °C
(2)
Nominal running conditions: external air temperature 3 °C; chilled water temperature - delivery 7.2 °C – return 12.7 °C. For
conditions other than the nominal conditions, apply the cooling capacity correction factors seen in Table 3, page 12.
(3)
PCI 34.02 MJ/m
3
(1013 mbar – 1 °C).
(4)
PCI 46.34 MJ/kg
( )
A reduction in RPM of the fan (air delivery) is required for external air temperatures less than 33°C.
(6)
Sound source rested on a reflective surface.
(7)
To be eventually set only by personnel Robur. Minimum Temperature Factory Set = 4, °C.
(8)
±10% in relation to the power supply and tolerance on the power draw of the electrical motors.
(9)
Nominal running conditions: return water temperature 12.7°C; delivery 2700 L/hr. For deliveries different from the nominal, please
refer to Figure 4, page 24.
(10)
Height of the silenced ventilation ACF, Standard version, complete with fan nozzle.

ACF60-00 – Installation, User’s and Maintenance Manual
12 Ed. 04/2012
ACF60-00, ACF60-00 S – COOLING CAPACITY CORRECTION FACTORS
Table 3 – ACF60-00, ACF60-00 S – Cooling capacity multiplication correctional factors for external air
temperatures and water flow rates different from the nominal values reported in the table.
WATER DELIVERY TEMPERATURE °C
EXTERNAL AIR
TEMPERATURE
°C
3.0 5.0 7.0 9.0
0 0.98 0.99 1.01 1.03
5 0.98 0.99 1.01 1.03
10 0.98 0.99 1.01 1.03
15 0.98 0.99 1.01 1.03
20 0.98 0.99 1.01 1.03
25 0.97 0.99 1.01 1.03
30 0.90 0.98 1.01 1.03
35 0.67 0.87 1.00 1.02
40 — — 0.88 0.93
45 — — 0.67 0.78

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 13
ACF60-00 TK, ACF60-00 TK S - TECHNICAL SPECIFICATIONS
SIZE
UNIT ACF60-00
TK
ACF60-
00
TK S
OPERATIONAL CHARACTERISTICS
NOMINAL HEAT CAPACITY AT THE BURNER
(1)
NOMINAL
EFFECTIVE kW 2 .30 2 .03
COOLING CAPACITY
(2)
kW 17.72
CHILLED WATER FLOW RATE
NOMINAL
MINIMUM
MAXIMUM
L/hr
2770
2 00
3200
m
3
/h
GAS CONSUMPTION NAT. GAS
(3)
L.P.G.
(4)
NOMINAL
EFFECTIVE
NOMINAL
EFFECTIVE
kg/hr
2.68
2.6
1.96
1.94
NOISE LEVEL
( ) (6)
at 10 meters MAXIMUM dB(A) 4 49
FUNCTIONAL RANGE (T
OUTSIDE AIR
) MINIMUM
MAXIMUM °C -12
+4
ACF INTAKE WATER TEMPERATURE MAXIMUM °C +4
OUTLET WATER TEMPERATURE
(7)
MINIMUM °C +3
ELECTRICAL CHARACTERISTICS
VOLTAGE V, phases,
Neutral, Hz 230 1N 0
TOTAL ELECTRICAL LOAD
(8)
W 900 930
WATER CONNECTIONS
WATER DELIVERY AND RETURN “ 1 ¼ “F
GAS “ ¾ “F
ACF INTERNAL PRESSURE DROP
(9)
NOMINAL bar 0.29
MAXIMUM WORKING PRESSURE bar 4
MAXIMUM FILLING PRESSURE bar 3
PHYSICAL SPECIFICATIONS
OPERATIONAL WEIGHT kg 3 0 380
INTERNAL WATER CAPACITY OF ACF L 3
WIDTH 8 0
DEPTH 1230 DIMENSIONS
(10)
HEIGHT
mm
1290 1 40
(9)
Table 4 – ACF60-00 TK and ACF60-00 TK S Technical Specifications
Remarks
(1)
Nominal conditions: 1013 mbar, 1 °C; Effective conditions: 1000 mbar, 20 °C
(2)
Nominal running conditions: external air temperature 3 °C; chilled water temperature - delivery 7.2 °C – return 12.7 °C. For
conditions other than the nominal conditions, apply the cooling capacity correction factors seen in Table 5, page 14.
(3)
PCI 34.02 MJ/m
3
(1013 mbar – 1 °C).
(4)
PCI 46.34 MJ/kg
( )
A reduction in RPM of the fan (air delivery) is required for external air temperatures less than 33°C.
(6)
Sound source rested on a reflective surface.
(7)
To be eventually set only by personnel Robur. Minimum Temperature Factory Set = 4, °C
(8)
±10% in relation to the power supply and tolerance on the power draw of the electrical motors.
(9)
Nominal running conditions: return water temperature 12.7°C; delivery 2770 L/hr. For deliveries different from the nominal, please
refer to Figure 4, page 24.
(10)
Height of the silenced ventilation, ACF TK version, complete with fan nozzle.

ACF60-00 – Installation, User’s and Maintenance Manual
14 Ed. 04/2012
ACF60-00 TK, ACF60-00 TK S – COOLING CAPACITY CORRECTION FACTORS
Table 5 – ACF60-00 TK, ACF60-00 TK S – Cooling capacity multiplication correctional factors for external air
temperatures and water flow rates different from the nominal values reported in the table.
WATER DELIVERY TEMPERATURE °C
EXTERNAL AIR
TEMPERATURE
°C
3.0 5.0 7.0 9.0
-12 1.18 1.18 1.19 1.20
-10 1.18 1.18 1.18 1.19
-8 1.17 1.17 1.18 1.19
-6 1.16 1.16 1.17 1.18
-4 1.16 1.16 1.16 1.18
-2 1.1 1.1 1.16 1.17
0 1.1 1.1 1.1 1.16
2 1.14 1.14 1.1 1.16
4 1.14 1.14 1.14 1.1
6 1.13 1.13 1.14 1.1
8 1.12 1.13 1.13 1.14
10 1.12 1.12 1.12 1.13
12 1.12 1.12 1.12 1.13
14 1.11 1.11 1.11 1.12
16 1.11 1.11 1.12 1.12
18 1.10 1.10 1.11 1.11
20 1.09 1.09 1.11 1.11
22 1.08 1.08 1.10 1.10
24 1.06 1.06 1.10 1.10
26 1.03 1.0 1.09 1.09
28 0.98 1.02 1.08 1.08
30 0.92 0.99 1.06 1.07
32 0.8 0.9 1.04 1.06
34 0.7 0.90 1.02 1.04
35 0.69 0.87 1.00 1.03
36 — 0.84 0.98 1.02
38 — — 0.94 0.99
40 — — 0.89 0.9
42 —
— 0.83 0.91
44 —
— — 0.8
45 —
— — 0.82

Section GENERAL INFORMATION AND TECHNICAL SPECIFICATIONS
Ed. 04/2012 1
ACF60-00 HT, ACF60-00 HT S - TECHNICAL SPECIFICATIONS
SIZE
UNIT ACF60-00
HT
ACF60-
00
HT S
OPERATIONAL CHARACTERISTICS
NOMINAL HEAT CAPACITY AT THE BURNER
(1)
NOMINAL
EFFECTIVE kW 2 .30 2 .03
COOLING CAPACITY
(2)
kW 17.12
CHILLED WATER FLOW RATE
NOMINAL
MINIMUM
MAXIMUM
L/hr
267
2 00
3200
m
3
/h
GAS CONSUMPTION NAT. GAS
(3)
L.P.G.
(4)
NOMINAL
EFFECTIVE
NOMINAL
EFFECTIVE
kg/hr
2.68
2.6
1.96
1.94
NOISE LEVEL
( ) (6)
at 10 meters MAXIMUM dB(A) 4 49
FUNCTIONAL RANGE (T
OUTSIDE AIR
) MINIMUM
MAXIMUM °C 0
+ 0
ACF INTAKE WATER TEMPERATURE MAXIMUM °C +4
OUTLET WATER TEMPERATURE MINIMUM °C +
ELECTRICAL CHARACTERISTICS
VOLTAGE V, phases,
Neutral, Hz 230 1N 0
TOTAL ELECTRICAL LOAD
(7)
W 900 930
WATER CONNECTIONS
WATER DELIVERY AND RETURN “ 1 ¼ “F
GAS “ ¾ “F
ACF INTERNAL PRESSURE DROP
(8)
NOMINAL bar 0.27
MAXIMUM WORKING PRESSURE bar 4
MAXIMUM FILLING PRESSURE bar 3
PHYSICAL SPECIFICATIONS
OPERATIONAL WEIGHT kg 3 0 380
INTERNAL WATER CAPACITY OF ACF L 3
WIDTH 8 0
DEPTH 1230 DIMENSIONS
(9)
HEIGHT
mm
1290 1 40
(9)
Table 6 – ACF60-00 HT and ACF60-00 HT S Technical Specifications
Remarks
(1)
Nominal conditions: 1013 mbar, 1 °C; Effective conditions: 1000 mbar, 20 °C
(2)
Nominal running conditions: external air temperature 3 °C; chilled water temperature - delivery 7.2 °C – return 12.7 °C. For
conditions other than the nominal conditions, apply the cooling capacity correction factors seen in Table 7, page 16.
(3)
PCI 34.02 MJ/m
3
(1013 mbar – 1 °C).
(4)
PCI 46.34 MJ/kg
( )
A reduction in RPM of the fan (air delivery) is required for external air temperatures less than 33°C.
(6)
Sound source rested on a reflective surface.
(7)
±10% in relation to the power supply and tolerance on the power draw of the electrical motors.
(8)
Nominal running conditions: return water temperature 12.7°C; delivery 267 L/hr. For deliveries different from the nominal, please
refer to Figure 4, page 24.
(9)
Height of the silenced ventilation, ACF HT version, complete with fan nozzle.

ACF60-00 – Installation, User’s and Maintenance Manual
16 Ed. 04/2012
ACF60-00 HT, ACF60-00 HT S – COOLING CAPACITY CORRECTION FACTORS
Table 7 – ACF60-00 HT, ACF60-00 HT S – Cooling capacity multiplication correctional factors for external air
temperatures and water flow rates different from the nominal values reported in the table.
WATER DELIVERY TEMPERATURE °C
EXTERNAL AIR
TEMPERATURE
°C
5.0 7.0 10.0 12.5 14.0
0 1.02 1.02 1.02 1.02 1.03
2 1.02 1.02 1.02 1.02 1.03
4 1.02 1.02 1.02 1.02 1.03
6 1.02 1.02 1.02 1.02 1.03
8 1.02 1.02 1.02 1.02 1.03
10 1.02 1.02 1.02 1.02 1.03
12 1.02 1.02 1.02 1.02 1.03
14 1.02 1.02 1.02 1.02 1.03
16 1.02 1.02 1.02 1.02 1.03
18 1.02 1.02 1.02 1.02 1.03
20 1.02 1.02 1.02 1.02 1.03
22 1.02 1.02 1.02 1.02 1.03
24 1.02 1.02 1.02 1.02 1.03
26 1.01 1.02 1.02 1.02 1.03
28 1.01 1.02 1.02 1.02 1.03
30 1.01 1.02 1.02 1.02 1.03
32 0.99 1.02 1.02 1.02 1.03
34 0.96 1.01 1.01 1.01 1.02
35 0.94 1.00 1.00 1.01 1.02
36 0.92 0.99 1.00 1.00 1.02
38 0.87 0.97 0.99 0.99 1.01
40 0.82 0.93 0.97 0.98 1.00
42 — 0.88 0.94 0.97 0.99
44 — 0.82 0.91 0.9 0.97
46 — — 0.86 0.92 0.9
48 —
— 0.80 0.87 0.91
50 —
— — 0.81 0.86