Robur GA ACF TK Installation, Use And Maintenance Manual

Brand: Robur

Model: GA ACF TK

Type: Installation, Use And Maintenance Manual

This manual is also suitable for

Installation, use and maintenance manual

gas powered

absorption chiller

GA ACF

This Installation, use and maintenance manual has been drawn up and printed by Robur S.p.A.; whole or partial

reproduction of this Installation, use and maintenance manual is prohibited.

The original is led at Robur S.p.A.

Any use of this Installation, use and maintenance manual other than for personal consultation must be previously

authorised by Robur S.p.A.

The rights of those who have legitimately led the registered trademarks contained within this publication are not

aected.

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 Installation, use and maintenance manual without prior notice.

Revision: T

Code: D-LBR357

DISPOSAL

The appliance and all its accessories must be disposed of separately in accordance with the regulations in force.

Use of the WEEE symbol (Waste Electrical and Electronic Equipment) indicates that this product cannot be disposed of as household waste.

Proper disposal of this product helps to prevent potential negative consequences for the environment and human health.

Installation, use and maintenance manual – GA ACF

INDEX OF CONTENTS

I Introduction .............................................................................

p.4

Recipients ..........................................................................

p.4

Control device ..................................................................

p.4

II Symbols and denitions ...............................................

p.4

II.1 Key to symbols .................................................................

p.4

II.2 Terms and denitions ....................................................

p.4

III Warnings......................................................................................

p.4

III.1 General and safety warnings ......................................

p.4

III.2 Conformity ........................................................................

p.5

III.3 Exclusions of liability and warranty ..........................

p.6

1 Features and technical data ......................................

p.7

1.1 Features ..............................................................................

p.7

1.2 Dimensions .......................................................................

p.8

1.3 Components ...................................................................

p.10

1.4 Electrical wiring diagram ...........................................

p.13

1.5 Electronic boards ..........................................................

p.14

1.6 Controls ............................................................................

p.15

1.7 Technical characteristics .............................................

p.16

2 Transport and positioning ........................................

p.17

2.1 Warnings ..........................................................................

p.17

2.2 Handling ...........................................................................

p.17

2.3 Appliance positioning .................................................

p.18

2.4 Minimum clearance distances..................................

p.18

2.5 Mounting base ...............................................................

p.18

3 Heating engineer ...............................................................

p.18

3.1 Warnings ..........................................................................

p.18

3.2 Hydraulic system ...........................................................

p.19

3.3 Hydraulic connections ................................................

p.19

3.4 Water circulation pump ..............................................

p.20

3.5 Antifreeze function .......................................................

p.20

3.6 Antifreeze liquid ............................................................

p.20

3.7 System water quality ...................................................

p.21

3.8 System lling ..................................................................

p.21

3.9 Fuel gas supply ..............................................................

p.21

4 Electrical installer ..............................................................

p.22

4.1 Warnings ..........................................................................

p.22

4.2 Electrical systems ..........................................................

p.22

4.3 Electrical power supply ...............................................

p.23

4.4 Set-up and control ........................................................

p.23

4.5 Water circulation pump ..............................................

p.27

5 First start-up ..........................................................................

p.28

5.1 Preliminary checks ........................................................

p.28

5.2 Electronic adjustment on the machine – Menus

and parameters of the S61 board ...........................

p.29

5.3 Modifying settings ........................................................

p.30

6 Normal operation ..............................................................

p.30

6.1 Warnings ..........................................................................

p.30

6.2 Switch on and o ..........................................................

p.30

6.3 Modifying settings ........................................................

p.30

6.4 Eciency ..........................................................................

p.30

7 Maintenance ..........................................................................

p.31

7.1 Warnings ..........................................................................

p.31

7.2 Pre-emptive maintenance .........................................

p.31

7.3 Scheduled routine maintenance .............................

p.31

7.4 Messages on the display ............................................

p.32

7.5 Restarting a locked-down unit.................................

p.32

7.6 Periods of inactivity ......................................................

p.32

8 Diagnostics ..............................................................................

p.33

8.1 Operative codes.............................................................

p.33

Introduction

I INTRODUCTION

Manual

This Manual is an integral part of the GA ACF unit and

must be handed to the end user together with the

appliance.

RECIPIENTS

This Manual is intended for:

▶

End user, for appropriate and safe use of the appliance.

▶

Qualied installer, for correct appliance installation.

▶

Planner, for specic information on the appliance.

CONTROL DEVICE

In order to be able to work, the GA ACF unit needs a control de-

vice (DDC or external request), which must be connected by the

installer.

II SYMBOLS AND DEFINITIONS

II.1 KEY TO SYMBOLS

DANGER

WARNING

NOTE

PROCEDURE

REFERENCE (to other document)

II.2 TERMS AND DEFINITIONS

GA Appliance/Unit = equivalent terms, both used to designate

the GA Gas Absorption chiller.

TAC = Technical Assistance Centre authorised by Robur.

External request = generic control device (e.g. thermostat, tim-

er or any other system) equipped with a voltage-free NO contact

and used as control to start/stop the GA unit.

DDC Control (Direct Digital Controller) = optional Robur adjust-

ment device to control one or more Robur appliances (GAHP

heat pumps, GA chillers and AY00-120 boilers) in ON/OFF mode.

RB100/RB200 Devices (Robur Box) = optional interface devices

complementary to DDC, which may be used to broaden its func-

tions (heating/cooling/DHW production service demands, and

control of system components such as third party generators,

adjustment valves, circulators, probes).

GUE (Gas Utilization Eciency) = eciency index of gas chiller,

equal to the ratio between the chilling energy produced and the

energy of the fuel used (relative to NCV, net caloric value).

First start-up = appliance commissioning operation which may

only and exclusively be carried out by a TAC.

S61 Board = electronic board on the GA unit, to control all func-

tions and to provide interface with other devices and with the

user.

III WARNINGS

III.1 GENERAL AND SAFETY WARNINGS

Installer's qualications

Installation must exclusively be performed by a qualied

rm and by qualied personnel, with specic knowledge

on heating, cooling, electrical systems and gas applianc-

es, in compliance with the laws in force in the Country of

installation.

Declaration of conformity

Upon completing installation, the installing rm shall

issue to the owner/client the appliance's workmanlike

conformity declaration, according to national/local reg-

ulations in force and the manufacturer's instructions/

provisions.

Misuse

The appliance must only be used for the purposes for

which it has been designed. Any other use is deemed

hazardous. Incorrect use may aect operation, duration

and safety of the appliance. Adhere to the manufactur-

er's instructions.

Hazardous situations

 Do not start the appliance in hazardous conditions, such

as: gas smell, problems with the plumbing/electrical/gas

system, parts of the appliance under water or damaged,

malfunctioning, disabling or bypassing control and safe-

ty devices.

 In case of danger, request intervention by qualied per-

sonnel.

 In case of danger, switch o the electrical power and gas

supplies only if this can be done in total safety.

 Do not entrust children, persons with physical, sensory

or mental disabilities or persons with poor knowledge

and experience with use of the appliance.

Gas component tightness

 Before performing any operation on gas ducting compo-

nents, close the gas valve.

 Upon completing any procedure, perform the tightness

test according to regulations in force.

Warnings

Installation, use and maintenance manual – GA ACF

III

Gas smell

If you smell gas:

 Do not use electrical devices such as telephones, mul-

timeters or other equipment that may cause sparks next

to the appliance.

 Shut o the gas supply by turning the valve o.

 Disconnect electrical power supply by means of the

external isolation switch in the power supply electrical

panel.

 Use a telephone away from the appliance to ask for inter-

vention from qualied personnel.

Moving parts

The appliance contains moving parts.

 Do not remove guards during operation, and in any case

prior to disconnecting the power supply.

Burn hazard

The appliance contains very hot parts.

 Do not open the appliance and do not touch internal

components before the appliance has cooled down.

Pressure vessels

The appliance has a sealed circuit classied as pres-

sure vessel, the tightness of which is tested by the

manufacturer.

 Do not carry out any intervention on the sealed circuit or

on the appliance's valves.

Water-ammonia solution

The GA unit uses the ammonia-water absorption cycle.

The water-ammonia solution is contained in the sealed

circuit. The solution is harmful for health if it is ingested,

inhaled or comes in contact with the skin.

 In the event of coolant leak keep away and disconnect

the power and gas supply (only if it is possible to do so

with no danger).

 Ask for TAC intervention.

Electrocution hazard

 Disconnect the electrical power supply before any oper-

ation on appliance components.

 For electrical connections exclusively use compliant

components and according to the specications provid-

ed by the manufacturer.

 Ensure the appliance cannot be accidentally switched

back on.

Earthing

Electrical safety depends on eective earthing system,

correctly connected to the appliance and installed ac-

cording to the regulations in force.

Distance from combustible or ammable materials

 Do not deposit ammable materials (paper, diluents,

paints, etc.) near the appliance.

Limescale and corrosion

Depending on the chemical/physical properties of the

system water, limescale or corrosion may damage the

appliance (Paragraph 3.7

p.21

 Check system sealing.

 Avoid frequent top-ups.

Chloride concentration

The concentration of chlorides or free chlorine in the

system water must not exceed the values in Table

3.2

p.21

Aggressive substances in the air

Halogenated hydrocarbons containing chlorine and u-

orine compounds cause corrosion. The air of the installa-

tion site must be free from aggressive substances.

Switching the appliance o

Disconnecting the power supply while the appliance

is running may cause permanent damage to internal

components.

 Except in the case of danger, do not disconnect the pow-

er supply to switch o the appliance, but always and ex-

clusively act through the provided control device (DDC

or external request).

In the event of failure

Operations on internal components and repairs may

exclusively be carried out by a TAC, using only original

parts.

 In the event of failure of the appliance and/or breakage

of any component, do not attempt to repair and/or re-

store and immediately contact the TAC.

Routine maintenance

Proper maintenance assures the eciency and good op-

eration of the appliance over time.

 Maintenance must be performed according to the man-

ufacturer's instructions (see Chapter 7

p. 31

) and in

compliance with current regulations.

 Appliance maintenance and repairs may only be entrust-

ed to rms legally authorised to work on gas appliances

and systems.

 Enter into a maintenance contract with an authorised

specialised rm for routine maintenance and for servic-

ing in case of need.

 Use only original parts.

Decommissioning and disposal

If the appliance is to be disposed of, contact the manu-

facturer for its disposal.

Keep the Manual

This Installation, use and maintenance manual must al-

ways accompany the appliance and must be handed to

the new owner or installer in the event of sale or removal.

III.2 CONFORMITY

EU Directives and standards

GA series absorption chillers are certied as conforming to

Warnings

III

standard EN 12309 and comply with the essential requirements

of the following Directives:

▶

2016/426/EU "Gas Appliances Regulation" as amended and

added.

▶

2014/30/EC "Electromagnetic Compatibility Directive" as

amended and added.

▶

2014/35/EC "Low Voltage Directive" as amended and added.

▶

2006/42/EC "Machine Directive" as amended and added.

▶

2014/68/EU "Pressure Equipment Directive" as amended

and added.

Furthermore, they comply with the requirements of the follow-

ing standards:

▶

EN 378 Refrigerating systems and heat pumps.

Other applicable provisions and standards

The design, installation, operation and maintenance of the sys-

tems shall be carried out in compliance with current applicable

regulations, depending on the Country and location, and in ac-

cordance with the manufacturer's instructions. In particular, reg-

ulations regarding the following shall be complied with:

▶

Gas systems and equipment.

▶

Electrical systems and equipment.

▶

Heating and air conditioning systems, heat pumps and chill-

ers.

▶

Fire safety and prevention.

▶

Any other applicable law, standard and regulation.

III.3 EXCLUSIONS OF LIABILITY AND

WARRANTY

Any contractual or extra-contractual liability of the man-

ufacturer for any damage caused by incorrect installa-

tion and/or improper use and/or failure to comply with

regulations and with the manufacturer's directions/in-

structions shall be disclaimed.

In particular, the warranty on the appliance may be ren-

dered void by the following conditions:

 Incorrect installation.

 Misuse.

 Failure to comply with the manufacturer's indications on

installation, use and maintenance.

 Alteration or modication of the product or any part

thereof.

 Extreme operational conditions or however outside of

the operational ranges set forth by the manufacturer.

 Damages caused by external agents such as salts, chlo-

rine, sulphur or other chemical substances contained in

the installation water or present in the air of the instal-

lation site.

 Abnormal actions transmitted to the appliance by the

plant or installation (mechanical stresses, pressure, vi-

brations, thermal expansion, electrical surges...).

 Accidental damages or due to force majeure.

Features and technical data

Installation, use and maintenance manual – GA ACF

1 FEATURES AND TECHNICAL DATA

1.1 FEATURES

Operation

Based on the thermodynamic water-ammonia absorption cycle

0–NH

), the appliance produces chilled water using natural

gas (or LPG) as primary energy and dissipating heat directly to

the outside air.

The thermodynamic cycle takes place within a hermetically

sealed circuit, in welded construction, perfectly tight, facto-

ry-tested, which does not require any maintenance or coolant

top-ups.

Mechanical and thermo-hydraulic components

▶

Steel sealed circuit, externally treated with epoxy paint.

▶

Multigas pre-mixing burner equipped with ignition and

ame detection managed by an electronic control unit.

▶

Titanium stainless steel shell-and-tube water exchanger

(evaporator), externally insulated.

▶

Air exchanger (condenser) with nned coil, with steel pipe

and aluminium ns.

▶

Variable-ow microprocessor-controlled helicoidal mo-

tor-fan.

Control and safety devices

▶

S61 electronic board with microprocessor, LCD display and

knob.

▶

Circuit water ow switch.

▶

Generator limit thermostat, with manual reset.

▶

Automatically resettable ue gas thermostat.

▶

Dierential air pressure switch on the combustion circuit.

▶

Sealed circuit safety relief valve.

▶

Bypass valve, between high and low-pressure circuits.

▶

Ionization ame control box.

▶

Double shutter electric gas valve.

▶

Antifreeze functions for hydraulic circuit.

▶

Heat recovery exchanger circulating pump relay (HR version

only).

Versions

The GA ACF unit is available in the following versions:

▶

ACF standard, for residential/retail/industrial cooling sys-

tems with chilled water up to +3 °C.

▶

HR with heat recovery exchanger, for residential/retail/in-

dustrial cooling systems with chilled water up to +3 °C, plus

recovery exchanger hot water up to +80 °C (e.g. DHW pro-

duction).

▶

TK for heavy duty use, for process systems and applications

with chilled water up to +3 °C, in continuous operation year

round.

▶

HT for very hot climates, for residential/retail/industrial cool-

ing systems with chilled water up to +5 °C, with outside air

up to 50 °C.

▶

LB for negative temperatures, for cooling systems with

chilled water up to -10 °C (glycol indispensable).

Models ACF, TK, LB and HT have 2 chilled water inlet/outlet t-

tings, model HR has 4 chilled water and heat recovery exchanger

hot water inlet/outlet ttings.

1.1.1 Standard or silenced fan

According to the type of fan, all the GA ACF units are available

in two versions:

▶

Standard fan, for applications that do not require a special

degree of noiselessness.

▶

Silenced fan, for applications that require a high degree of

noiselessness.

Features and technical data

1.2 DIMENSIONS

Figure1.1 ACF standard version dimensions

A Position of holes for xing of anti-vibration joints

Figure1.2 ACF silenced version dimensions

A Position of holes for xing of anti-vibration joints

Features and technical data

Installation, use and maintenance manual – GA ACF

Figure1.3 ACF Service plate with plumbing and gas connections

A Water outlet connection Ø 1 1/4" F

B Water inlet connection Ø 1 1/4" F

G Gas connection Ø 3/4" F

Figure1.4 ACF-HR Service plate with plumbing and gas connections

G Gas connection Ø 3/4" F

Chiller - CHILLED WATER

D Outlet water tting Ø 1 1/4" F

C Water inlet connection Ø 1 1/4" F

Recovery exchanger - HOT WATER

A Water outlet connection Ø 1 1/4" F

B Water inlet connection Ø 1 1/4" F

Features and technical data

1.3 COMPONENTS

Figure1.5 Internal components - front view

1 Combustion air intake

2 Combustion blower

3 Gas valve

4 Electrical panel

5 Oil pump

6 Water inlet connection Ø 1 1/4" F

7 Water outlet connection Ø 1 1/4" F

8 Gas connection Ø 3/4" F

9 Room temperature probe

10 Fan































Features and technical data

Installation, use and maintenance manual – GA ACF

Figure1.6 Internal components - left side view

1 Ignition transformer 2 Flue thermostat 3 Ignitor and ame detectors









Features and technical data

Figure1.7 Internal components - right side view

1 Safety valve

2 Return temperature probe

3 TG generator temperature probe

4 Limit thermostat

5 Flow temperature probe

6 Flow switch

7 TCN probe

Features and technical data

Installation, use and maintenance manual – GA ACF

1.4 ELECTRICAL WIRING DIAGRAM

Figure1.8 GA-ACF, ACF-TK, ACF-LB, ACF-HT Unit wiring diagram

TER Power supply terminal block 230 Vac

SCH1 Electronic board (S61)

GV Gas solenoid valve

LS Gas ow warning lamp

PSW Air pressure switch

THMF Outlet water temperature probe

THRF Inlet water temperature probe

TCN Condenser outlet temperature probe

TA Ambient air temperature probe

TG Generator temperature sensor

SRT1 Oil pump rotation sensor

TF Flue gas thermostat

TL Generator limit thermostat (manual reset)

FL Water ow switch

BLW Blower motor

C Blower condenser

FAN Fan motor

C2 Fan condenser

PMP Oil hydraulic pump motor

PWRTR Tansformer 230/24 Vac

CNTBOX Flame controller

IGN Ignition electrodes

IGNTR Ignition transformer

FLS Detection electrode



Features and technical data

Figure1.9 ACF-HR Unit wiring diagram

TER Power supply terminal block 230 Vac

SCH1 Electronic board (S61)

GV Gas solenoid valve

LS Gas ow warning lamp

PSW Air pressure switch

THMF Outlet water temperature probe

THRF Inlet water temperature probe

TCN Condenser outlet temperature probe

TA Ambient air temperature probe

TG Generator temperature sensor

SRT1 Oil pump rotation sensor

TF Flue gas thermostat

TL Generator limit thermostat (manual reset)

FL Water ow switch

BLW Blower motor

C Blower condenser

FAN Fan motor

C2 Fan condenser

PMP Oil hydraulic pump motor

PWRTR Tansformer 230/24 Vac

CNTBOX Flame controller

IGN Ignition electrodes

IGNTR Ignition transformer

FLS Detection electrode

KP Installation water circulating pump relay

(recovery circuit)



1.5 ELECTRONIC BOARDS

The appliance's electrical panel contains:

Electronic Board S61 (Figure 1.10

p. 15

), with microproces-

sor, it controls the appliance and displays data, messages and

operative codes. The appliance is monitored and programmed

by interacting with the display and knob.

Features and technical data

Installation, use and maintenance manual – GA ACF

Figure1.10 Electronic board S61

SCH Electronic board S61

THMF Water delivery temperature probe input

THRF Water return temperature probe input

TCN Condenser outlet temperature probe input

TA Ambient air temperature probe input

TG Generator temperature probe input

TA1 Not used

TA2 Not used

SRT1 Oil pump rotation sensor input

SRT2 Not used

JP12 Not used

SPI Not used

P8 (GND, L, H) CAN BUS connector

J1 CAN bus Jumper

A1, A2 Auxiliary inputs (not used)

TF Flue gas thermostat input

TL Generator limit thermostat input

FL Water ow switch input

FS5 Board supply input 24 Vac

P7 (R, W, Y, O) operation request inputs

IGN.BOX (L, N) ame controller supply input 230 Vac

MAIN board supply input 230 Vac

PUMP 230V (L, N) oil hydraulic pump supply

output

N.O. Contact Circuit water circulating pump

controller terminals

J10 Circuit water circulating pump controller

jumper

FAN (BK, WH, BR) Fan output

JTAG S61 board programming connector

ENC Knob

JP10 6-pole ame controller connector

F1 T 2A fuse

F2 T 10A fuse

F3 T 2A fuse

F4 T 3,15A fuse

1.6 CONTROLS

Control device

The appliance may only work if it is connected to a control de-

vice, selected from:

▶

(1) DDC control

▶

(2) external request

1.6.1 Control system (1) with DDC (GAHP unit ON/

OFF)

The DDC controller is able to control appliances, a single GA unit,

or even several Robur GAHP/GA/AY units in cascade, only in ON/

OFF mode (non modulating). For more details refer to the DDC,

RB100, RB200 Manuals and the Design Manual.

DDC Controller

The main functions are:

▶

Setup and control of one (or more) Robur units of the

absorption line (GAHP, GA, AY).

▶

Data display and parameters setting.

▶

Hourly programming.

▶

Climatic curve control.

▶

Diagnostics.

▶

Errors reset.

▶

Possibility to interface with a BMS.

DDC functionality may be extended with auxiliary Robur devices

RB100 and RB200 (e.g. service requests, DHW production, Third

Party generator control, probe control, system valves or circulat-

ing pumps, ...).

1.6.2 Adjustment system (2) with external request

for heating or cooling (GAHP unit ON/OFF)

The appliance may also be controlled via generic enable devic-

es (e.g. thermostat, timer, button, contactor...) tted with volt-

age-free NO contact. This system only provides elementary con-

trol (on/o, with xed setpoint temperature), hence without the

important functions of system (1). It is advisable to possibly limit

Features and technical data

its use to simple applications only and with a single appliance. For connection of the selected device to the appliance's

electronic board please refer to Paragraph 4.4

p.23

1.7 TECHNICAL CHARACTERISTICS

Table1.1 GA ACF technical data

ACF 60-00

Operation in conditioning mode

Unitary cooling power

Outdoor temperature/Delivery

temperature

A35W7 kW 17,7 17,1 -

A35W-5 kW - 13,3

Heat input

nominal (1013 mbar - 15 °C) kW 25,3

real kW 25,0

Cold water temperature (ow)

minimum °C 3 (1) 5 -10

nominal °C 7 -5

Cold water temperature (inlet)

maximum °C 45

minimum °C 8 -7

Water ow rate

maximum l/h 3500 2900

nominal l/h 2770 2675 2600

minimum l/h 2500 2300

Internal pressure drop at nominal water ow bar 0,29 (2) 0,42 (2)

External air temperature

nominal °C 35

maximum °C 45 50 45

minimum °C 0 -12 0

Operating recovery circuit

Recovery unit heat output

Outdoor temperature/Inlet

temperature/1000 l/h water

ow

A35W40 kW - 21,0 -

Hot water temperature (inlet) nominal °C - 40 -

Hot water temperature (outlet) nominal °C - 58 -

Water ow rate

maximum l/h - 2500 -

minimum l/h - 0 -

nominal l/h - 1000 -

Total GUE (40°C inlet temperature)

Outdoor temperature/Inlet

temperature/1000 l/h water

ow

A35W7 % - 155 -

Electrical specications

Power supply

voltage V 230

type - single-phase

frequency Hz 50

Electrical power absorption

nominal kW 0,82 (3)

nominal silenced kW 0,87 (3)

Degree of protection IP - X5D

Installation data

Gas consumption

G20 natural gas (nominal) m³/h 2,68 (4)

GPL G30/G31 (nominal) kg/h 1,97 (5) 1,94 (5)

sound power L

(max) dB(A) 79,6 (6)

sound power L

(max) silenced dB(A) 75,0 (6)

sound pressure L

at 5 metres (max) dB(A) 57,6 (7)

sound pressure L

at 5 m (maximum) silenced dB(A) 53,0 (7)

maximum water pressure in operation bar 4,0

Water content inside the apparatus

hot side l - 3 -

cold side l 3

Water tting

type - F

thread “ 1 1/4

Gas connection

type - F

thread “ 3/4

Dimensions

width mm 850

depth mm 1230

height mm 1445

silenced height mm 1540

Weight in operation kg 360 390 380

(1) To be set (on demand) during the rst startup. Default Minimum Temperature = 4,5 °C.

(2) For ows other than nominal see Design Manual, Pressure losses Paragraph.

(3) ±10% according to the power supply voltage and tolerance on electrical motors consumption. Measured at outdoor temperature of 30 °C.

(4) PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).

(5) PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).

(6) Sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.

(7) Maximum sound pressure levels in free eld, with directionality factor 2, obtained from the sound power level in compliance with standard EN ISO 9614.

Transport and positioning

Installation, use and maintenance manual – GA ACF

ACF 60-00

General information

Cooling uid

ammonia R717 kg 6,8 7,2 7,9 7,1 7,2

water H

O kg 10,0 10,3 10,0 10,5

(1) To be set (on demand) during the rst startup. Default Minimum Temperature = 4,5 °C.

(2) For ows other than nominal see Design Manual, Pressure losses Paragraph.

(3) ±10% according to the power supply voltage and tolerance on electrical motors consumption. Measured at outdoor temperature of 30 °C.

(4) PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).

(5) PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).

(6) Sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.

(7) Maximum sound pressure levels in free eld, with directionality factor 2, obtained from the sound power level in compliance with standard EN ISO 9614.

Table1.2 PED data

ACF 60-00 ACF 60-00 HR ACF 60-00 TK ACF 60-00 HT ACF 60-00 LB

PED data

Components under pression

generator l 18,6

leveling chamber l 11,5

evaporator l 3,7

cooling volume transformer l - 4,5

cooling absorber solution l 6,3

solution pump l 3,3

test pressure (in air) bar g 55

maximum pressure of the cooling circuit bar g 32

lling ratio kg of NH

/l 0,157 0,166 0,165 0,148 0,150

uid group - 1°

2 TRANSPORT AND POSITIONING

2.1 WARNINGS

Damage from transport or installation

The manufacturer shall not be liable for any damage dur-

ing appliance transport and installation.

On-site inspection

 Upon arrival at the site, ensure there is no transport dam-

age on packing, metal panels or nned coil.

 After removing the packing materials, ensure the appli-

ance is intact and complete.

Packing

 Only remove the packing after placing the appliance on

site.

 Do not leave parts of the packing within the reach of

children (plastic, polystyrene, nails...) since they are po-

tentially dangerous.

Weight

 The crane and lifting equipment must be suitable for the

load.

 Do not stand under suspended loads.

2.2 HANDLING

Handling and lifting

▶

Always handle the appliance in its packing, as delivered by

the factory.

▶

To lift the appliance use straps or slings inserted in the holes

of the base (Figure 2.1

p.17

▶

Use lifting beams to avoid damaging the outer panels and

nned coil (Figure 2.1

p.17

▶

Comply with safety regulations at the installation site.

Figure2.1 Instruction for lifting

In the event of handling with forklift or pallet truck,

comply with the handling instructions shown on the

packing.

Heating engineer

2.3 APPLIANCE POSITIONING

Do not install inside a room

The appliance is type-approved for external installation.

 Do not install inside a room, not even if it has openings.

 In no event start the appliance inside a room.

GA Unit ventilation

 The aerothermic appliance requires a large space, venti-

lated and free from obstacles, to enable smooth ow of

air to the nned coil and free air outlet above the mouth

of the fan, with no air recirculation.

 Incorrect ventilation may aect eciency and cause

damage to the appliance.

 The manufacturer shall not be liable for any incorrect

choices of the place and setting of installation.

Where to install the appliance

▶

The appliance may be installed at ground level, on a terrace

or on a roof, compatibly with its dimensions and weight.

▶

It must be installed outside buildings, in an area of natural air

circulation, outside the dripping path of drainpipes or simi-

lar. It does not require protection from weathering.

▶

No obstruction or overhanging structure (e.g. protruding

roofs, canopies, balconies, ledges, trees) shall interfere either

with the air owing from the top of the appliance or with the

exhaust ue gas.

▶

Do not install near the exhaust of ues, chimneys or hot

polluted air. In order to work correctly, the appliance needs

clean air.

Acoustic issues

▶

Pre-emptively assess the appliance's sound eect in connec-

tion to the site, taking into account that building corners, en-

closed courtyards, restricted spaces may amplify the acous-

tic impact due to the reverberation phenomenon.

2.4 MINIMUM CLEARANCE DISTANCES

Distances from combustible or ammable materials

▶

Keep the appliance away from combustible or ammable

materials or components, in compliance with applicable

regulations.

Clearances around the appliance

The minimum clearance distances shown in Figure 2.2

p. 18

(bar any stricter regulations) are required for safety, operation

and maintenance.

Figure2.2 Clearances

2.5 MOUNTING BASE

Mounting base constructive features

▶

Place the appliance on a levelled at surface made of re-

proof material and able to withstand its weight.

(1) - installation at ground level

▶

Failing a horizontal supporting base, make a at and levelled

concrete base, at least 100-150 mm larger than the appli-

ance size per side.

(2) - installation on terrace or roof

▶

The structure of the building must support the total weight

of the appliance and the supporting base.

▶

If necessary, provide a maintenance walkway around the ap-

pliance.

Anti vibration mountings

Although the appliance's vibrations are minimal, resonance

phenomena might occur in roof or terrace installations.

▶

Use anti-vibration mountings.

▶

Also provide anti-vibration joints between the appliance

and water and gas pipes.

3 HEATING ENGINEER

3.1 WARNINGS

General warnings

Read the warnings in Chapter III.1

p. 4

, providing im-

portant information on regulations and on safety.

Compliance with installation standards

Installation must comply with applicable regulations

in force, based on the installation Country and site, in

matters of safety, design, implementation and mainte-

nance of:

 heating systems

 cooling systems

 gas systems

Installation must also comply with the manufacturer's

provisions.

Heating engineer

Installation, use and maintenance manual – GA ACF

3.2 HYDRAULIC SYSTEM

Primary and secondary circuit

▶

In many cases it is advisable to divide the hydraulic system

into two parts, primary and secondary circuit, uncoupled by

a hydraulic separator, or possibly by a tank that also acts as

inertial tank/buer.

Water ow rate

The GA unit works with constant, water ow and ON/OFF oper-

ative mode.

System and components must be designed and installed

consistently.

Minimum water content

High thermal inertia is conducive to ecient appliance opera-

tion. Very short ON/OFF cycles are to be avoided.

▶

For each GA unit provide a minimum water content in the

installation of at least 70 litres.

▶

If necessary, provide for an inertial volume, to be suitably

sized (see design manual).

Buer tank

If using a buer tank, it can be with 2 or 4 hydraulic connections,

as shown in the following two diagrams (Figure 3.1

p. 19

3.2

p.19

Figure3.1 2-pipe tank diagram

1 Anti-vibration connection

2 Pressure gauge

3 Flow regulator valve

4 Water lter

5 Shut-o valves

6 Water pump (primary circuit)

7 Safety valve (3 bar)

8 Expansion tank

9 Hydraulic separator

10 Water pump (secondary circuit)

11 2-connection inertial buer tank

Figure3.2 4-pipe tank diagram

1 Anti-vibration connection

2 Pressure gauge

3 Flow regulator valve

4 Water lter

5 Shut-o valves

6 Water pump (primary circuit)

7 Safety valve (3 bar)

8 Expansion tank

9 4-connection inertial buer tank

10 Water pump (secondary circuit)

3.3 HYDRAULIC CONNECTIONS

Plumbing ttings

on the right, at the bottom, connection plate

Versions ACF/TK/LB/HT (Figure 1.3

p.9

▶

A (= out) 1 1/4" F - chilled WATER OUTLET (m = outlet to the

system)

▶

B (= in) 1 1/4" F - chilled WATER INPUT (r = inlet from the sys-

tem)

HR Version with heat recovery exchanger (Figure 1.4

p.9

▶

A (= out) 1 1/4" F - hot WATER OUTLET (m = outlet to the

system)

▶

B (= in) 1 1/4" F - hot WATER INPUT (r = inlet from the system)

▶

D (= out) 1 1/41" F - chilled WATER OUTLET (m = outlet to

the system)

▶

C (= in) 1 1/4" F - chilled WATER INPUT (r = inlet from the sys-

tem)

Hydraulic pipes, materials and features

▶

Use pipes for heating/cooling installations, protected from

weathering, insulated for thermal losses, with vapour barrier

to prevent condensation.

Pipe cleaning

 Before connecting the appliance,accurately wash the

water and gas piping and any other system component,

removing any residue.

Minimum components of primary plumbing circuit

Always provide, near the appliance:

▶

on water piping, both output and input (m/r)

 2 antivibration joints on water ttings

 2 pressure gauges

 2 isolation ball valves

▶

on the input water piping (r)

 1 separator lter

Heating engineer

 1 ow regulation valve, if the circulation pump is with

constant ow

 1 water circulation pump, towards the appliance

▶

on the output water piping (m)

 1 safety valve (3 bar)

 1 expansion tank of the individual unit

Figure3.3 Hydraulic plan

1 Anti-vibration connection

2 Pressure gauge

3 Flow regulator valve

4 Water lter

5 Shut-o valves

6 Water pump (primary circuit)

7 Safety valve (3 bar)

8 Expansion tank

9 Hydraulic separator / inertial tank with 4

ttings

10 Water pump (secondary circuit)

3.4 WATER CIRCULATION PUMP

The circulation pump (ow and head) must be selected and

installed based on pressure losses of plumbing/primary circuit

(piping + components + exchange terminals + appliance).

For the appliance pressure losses refer to Table 1.1

p.16

and

Design Manual.

Constant ow circulation pump

The primary circulating pump must be obligatorily controlled

by the appliance's electronic board (S61) (see Paragraph

1.5

p.14

3.5 ANTIFREEZE FUNCTION

Anti-icing self-protection

The appliance is equipped with an active antifreeze self-protec-

tion system to prevent icing. The anti-icing function (deactivat-

ed by default) automatically starts the primary circulation pump

when the outside temperature approaches zero.

Electrical continuity

The active antifreeze self-protection is only eective if

the power supply is assured. Otherwise, antifreeze liquid

might be required.

3.6 ANTIFREEZE LIQUID

Precautions with glycol

The manufacturer disclaims any liability for any damage

caused by improper glycol use.

 Always check product suitability and its expiry date with

the glycol supplier. Periodically check the product's pres-

ervation state.

 Do not use car-grade antifreeze liquid (without inhibi-

tors), nor zinc-coated piping and ttings (incompatible

with glycol).

 Glycol modies the physical properties of water (densi-

ty, viscosity, specic heat...). Size the piping, circulation

pump and thermal generators accordingly.

 With automatic system water lling, a periodic check of

the glycol content is required.

Operation with outside temperatures < 10 °C

If the outside air temperature is expected to be lower

than +10 °C add glycol to prevent a greater icing risk.

Type of antifreeze glycol

Inhibited type glycol is recommended to prevent oxidation

phenomena.

Glycol eects

The Table 3.1

p.20

shows, indicatively, the eects of using a

glycol depending on its %.

Table3.1 Technical data for lling the hydraulic circuit

Glycol %

Water-glycol mixture freezing temper-

ature

Percentage of increase in pressure drops Loss of eciency of unit

10 -3 °C - -

15 -5 °C 6,0% 0,5%

20 -8 °C 8,0% 1,0%

25 -12 °C 10,0% 2,0%

30 -15 °C 12,0% 2,5%

35 -20 °C 14,0% 3,0%

40 -25 °C 16,0% 4,0%

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