Galletti ESTRO GT 1, ESTRO GT 3, ESTRO GT 4M, ESTRO GT 4 Technical Manual

ESTRO GT

TECHNICAL MANUAL

EN

ESTRO GT FAN COILS - BRUSHLESS TECHNOLOGY

1,0 kW - 6,0 kW

ESTRO GT

2

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

The technical and dimensional data provided herein may undergo changes
in connection with product improvements.

OPERATING LIMITS

> thermal carrier fluid: water
> water temperature: from 5°C to 95°C
> maximum operating pressure: 10 bar
> air temperature: from 5°C to 43 °C
> supply voltage: 230 Vac

- For any further information, contact the manufacturer: [e-mail]

- To get the weight of the unit, refer to the User Manual, Rated technical
data table.

TABLE OF CONTENTS

1 GENERALITIES ..................................................................... 3

1.1 Available versions ..................................................................3

1.2 Main components ..................................................................3

1.3 BLDC technology ...................................................................3

2 MODELS AND CONSTRUCTIVE COMPONENTS ..................5 - 6

3 ACCESSORIES ..................................................................... 7

4 RATINGS AND TECHNICAL DATA .......................................8 - 9

4.1 Weights .................................................................................9

5 PERFORMANCES .............................................................10 - 18

5.1 Cooling mode: models with 1 heat exchanger ...................10 - 13

5.2 Heating mode: models with 1 heat exchanger....................14 - 15

5.3 Heating mode: models with 2 heat exchangers

(4 pipe systems) ..................................................................16

5.4 Sound level ......................................................................17 - 18

6 OVERALL DIMENSIONS ...................................................19 - 24

7 WIRING DIAGRAMS .........................................................25 - 26

8 GREEN -TECH MOTOR ASSEMBLY ...................................... 27

8.1 Electrical connections ...........................................................27

8.2 Inverter control diagram ........................................................27

9 ACCESSORIES .................................................................28 - 30

10 INSTALLATION REQUIREMENTS ......................................... 31

11 MAINTENANCE ................................................................... 31

3

ESTRO GT

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2

4

Brushless

motor

2-pipe

system

4-pipe

system

Vertical

installation

Horizontal

installation

Centrifugal

fan

ERGO

Supervision

THE MAXIMUM EXPRESSION OF TECHNOLOGY AT THE SERVICE OF THE
HOTEL INDUSTRY

GALLETTI’s extensive experience in the manufacture of fan coil units and
development of refined control logics was combined with the know-how of
EBM-PAPST in the construction of fan drive assemblies in order to create
ESTRO GT.
The ESTRO GT design was developed specifically for the hotel industry,
where fan coil units represent the most convenient solution for air
conditioning rooms given that they are efficient, reliable, quiet and simple
to maintain.
With ESTRO GT it’s almost like adding another star!
ESTRO GT uses fan drive assemblies with GreenTech technology, which
means BLDC motors directly integrated with the fan assembly and inverter
and 70% reductions in electricity consumption compared to traditional AC
motors. The low electricity consumption is the ideal solution for installations
in hotels, where the fan coil unit is running 80% of the time on average.
The extremely low noise levels and the possibility of continuous modulation
of the fan speed fully satisfy guests’ needs in terms of flexibility of use
and quiet operation. ESTRO GT fan coil units use MYCOMFORT LARGE and
EVO microprocessor control panels, which, thanks to the analogue outputs
and refined adjustment logics, perfectly control the operation of the BLDC
motors and modulating valves.
A wide range of accessories completes the offerings for recessed ceiling
installation.

1 GENERALITIES

PLUS

GreenTech Technology
Inverter-controlled BLDC motor
Low energy consumption
Modulating operation
Extremely quiet operation
Can be integrated into the ERGO
Incorporable ioniser

Thanks to the high efficiency and reliability guaranteed
GreenTech technology, ESTRO GT reduces operating
and maintenance costs while maintaining a top level of
comfort and minimal noise.

1.1 AVAILABLE VERSIONS

ESTRO GT FL Wall mounted with cabinet
ESTRO GT FA Wall recess mounted with cabinet
ESTRO GT CL Wall mounted with cabinet
ESTRO GT FU Floor and ceiling mounted with cabinet
ESTRO GT FP Ceiling mounted with cabinet
ESTRO GT FC Vertical / horizontal recess mounted with rear air intake
ESTRO GT FF Vertical / horizontal recess mounted with front air intake

ESTRO GT

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1.2 MAIN COMPONENTS

Cabinet

Composed of a painted steel sheet panel, side panels, air outlet grille
(swinging by 180°) and back suction grille built from ABS.

Structure

Built from galvanised steel sheet of extra thickness, heat and sound insu­lated by means of Class 1 self-extinguishing panels. FU - FC - FF versions
are suitable for either vertical or horizontal installation thanks to the dual
condensate collection and drainage system.

Heat exchanger

High efficiency heat exchanger made with copper piping and aluminium
fins, provided with brass manifolds and vent valve. The water connections
are reversible at the time of installation. On request it is possible to mount
an additional heat exchanger for 4-pipe systems.

Air filter

Honey-comb polypropylene washable air filter, easily removable for main­tenance operations. On FU version the air filters are fitted onto the air inlet
grille.

Electric fan with GreenTech BLDC motor

ESTRO GT uses the exclusive GreenTech technology of EBM-PAPST.
Permanent magnet BLDC motor with inverter integrated in the fan assembly,
protection rating IP44, insulation class F and ball bearings. Polypropylene
PP) volute. Centrifugal fan with forward-curving blades made of glassfilled
polyamide PA 6. Conformity with 2017 ERP Directive.

Backed by thirty years of experience in the manufacture of fan coil units
Galletti introduces the new ESTRO BLDC line.
Galletti fan coils can be equipped with a permanent magnet (brushless)
electric motor, controlled by an inver ter, which enables continuous adjustment
in the number of fan revolutions.
The great advantage of brushless motors is the significant reduction in
power consumption, which in instant operations reaches up to a 1/3 of that
of conventional motors and at around 50% in integrated operations, with the
corresponding reduction in CO2 emissions!
The DC Inverter technology allows to continuously adjust the air flow to the
actual needs of the environment by considerably reducing the fluctuations in
room temperature that are typical of step-by-step adjustments.

1.3 BLDC TECHNOLOGY

The direct consequence is also the reduction in the noise emission of the fan
coil, which is now proportional to the demands of the environment.

MAX speed

MED

speed

MIN

speed

winter set

winter (°C)

% opening

THE CONTROL

The operation of the unit with brushless motor is managed by the
MYCOMFORT LARGE control panel, using an analogue output (0-10V) which
is connected to the inverter.

The Galletti brushless fan coil thus represent the state of
the art due to the possibility of regulating the operation,
depending on the temperature of the air, its relative
humidity, the temperature of the water and based on the
programmable time slots.
By means of the digital outputs it is possible to switch on
and off external units or devices such as chiller, boiler,
pumps, water circulation pumps, etc.
Another analog output makes it possible to control the
modulating valves.

3 speed brushless motor temperature trend

3 speed brushless motor sound trend

5

ESTRO GT

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2 MODELS AND CONSTRUCTIVE COMPONENTS

GTFL Wall mounting

> Cabinet composed of a thick

steel sheet panel (10/10 mm),
side panels and air outlet grille
(swinging by 180°) built from
ABS. The side doors make
it possible to access the
technical compartments and
the control panel (accessory).

> Bearing structure built from thick galvanised steel sheet (thickness

up to 15/10 mm), insulated by means of Class 1 self-extinguishing
panels.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion, provided
with brass manifolds and air vent valve. The heat exchanger usually
comes with water connections mounted on the left, but it can be
turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for
maintenance operations. The filter is secured to the cabinet with 1/4­turn screws.

GTCL Wall mounting, cabinet

"classic", available in 9 models

(from GTCL1 up to GTCL9)

> Cabinet composed of a thick

steel sheet panel (10/10 mm),
side panels and air outlet grille
(swinging by 180°) built from
ABS. The side doors make
it possible to access the

technical compartments and the control panel (accessory).
Steel sheet colour: RAL 9001
ABS parts colour: PANTONE "warm gray 2u".
> Bearing structure built from thick galvanised steel sheet (thickness

up to 15/10 mm), insulated by means of Class 1 self-extinguishing

panels.
> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion, provided

with brass manifolds and air vent valve. The heat exchanger usually

comes with water connections mounted on the left, but it can be

turned by 180°.
> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.
> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,

with blades having an airfoil section and offset modules.
> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for

maintenance operations.

GTFA Wall mounting

> Cabinet composed of a thick

steel sheet panel (10/10 mm),
side panels and air outlet grille
(swinging by 180°) built from
ABS. The side doors make
it possible to access the
technical compartments and
the control panel (accessory).

> Bearing structure built from thick galvanised steel sheet (thickness

up to 15/10 mm), insulated by means of Class 1 self-extinguishing
panels.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion,
provided with brass manifolds and vent valve. The heat exchanger
usually comes with water connections mounted on the left, but it can
be turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for
maintenance operations.

GTFU Universal: floor/ceiling

mounted

> Cabinet composed of a thick

steel sheet panel (10/10
mm), side panels, air outlet
grille (swinging by 180°)
and back suction grilles built
from ABS. The side doors make it possible to access the technical
compartments and the control panel (accessory).

> Bearing structure built from thick galvanised steel sheet (thickness

up to 15/10 mm), insulated by means of Class 1 self-extinguishing
panels. The unit is supplied complete with a double condensate
collection and drainage system; in case of horizontal installation,
condensate is collected in a capacious drip tray.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion,
provided with brass manifolds and vent valve. The heat exchanger
usually comes with water connections mounted on the left, but it can
be turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, made up of modules

fitted onto the air inlet grille situated on the front panel of the cabinet.

ESTRO GT

6

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2 MODELS AND CONSTRUCTIVE COMPONENTS

GTFP Ceiling mounted

> Cabinet composed of a steel

sheet panel (thickness 10/10
mm), side panels and air outlet
grille (swinging by 180°) built
from ABS. The side doors
make it possible to access the
technical compartments and the control panel (accessory).

> Bearing structure built from thick galvanised steel sheet (thickness

up to 15/10 mm), insulated by means of Class 1 self-extinguishing
panels.

The unit is supplied complete with a double condensate collection

and drainage system; in case of horizontal installation, condensate is
collected in a capacious drip tray.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion, provided
with brass manifolds and air vent valve. The heat exchanger usually
comes with water connections mounted on the left, but it can be
turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for
maintenance operations. The filter is secured to the cabinet with 1/4­turn screws.

GTFC Vertical / horizontal recess

mounted

> Bearing structure built from

thick galvanised steel sheet
(thickness up to 15/10 mm),
insulated by means of Class
1 self-extinguishing panels.
The unit is supplied complete with a double condensate collection
and drainage system; in case of horizontal installation, condensate is
collected in a capacious drip tray.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion,
provided with brass manifolds and vent valve. The heat exchanger
usually comes with water connections mounted on the left, but it can
be turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for
maintenance operations.

GTFF Vertical / horizontal recess

mounted

> Bearing structure built from

thick galvanised steel sheet
(thickness up to 15/10 mm),
insulated by means of Class 1
self-extinguishing panels.

The unit is supplied complete

with a double condensate
collection and drainage system; in case of horizontal installation,
condensate is collected in a capacious drip tray.

> High efficiency heat exchanger made with copper piping and

aluminium fins blocked to pipings by mechanical expansion, provided
with brass manifolds and air vent valve. The heat exchanger usually
comes with water connections mounted on the left, but it can be
turned by 180°.

> Permanent magnets electric synchronous motor (GT) mounted on

vibration damping supports, complete with sinusoidal inver ter board.

> Double suction centrifugal fans, statically and dynamically balanced,

directly connected to the electrical motor, made with antistatic ABS,
with blades having an airfoil section and offset modules.

> Honey-comb polypropylene washable air filter, mounted on a

galvanised sheet frame protected by a net, easily removable for
maintenance operations. The filter is secured to the cabinet with 1/4­turn screws.

7

ESTRO GT

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3 ACCESSORIES

A broad and complete range of accessories defines these indoor units and allows them to be tailored to every type of installation requirement.
The standard units are supplied without control panel.

REF. DESCRIPTION TO

CONTROL PANELS AND THERMOSTATS

MCLE Wall-mounted microprocessor control - GALLETTI model MYCOMFORT LARGE ALL

KBESTE KIT for on-board installation on ESTRO (1 air probe + bracket + on-board LCD controller frame + wiring kit) GTFL-GTFA-GTFU

MCSWE Water temperature electronic sensor for MYCOMFORT controls ALL

MCSUE Humidity sensor for on-board microprocessor controls model MYCOMFORT MEDIUM and MYCOMFORT LARGE ALL

ADDITIONAL HEAT EXCHANGERS

DF 1 row additional heat exchanger for 4-pipe systems (hot water circuit) GTFL-GTFA-GTCL-GTFU-GTFP-GTFC-GTFF

SUPPORT COVERING FEET

ZA Pair of support covering feet GTFA

ZAG Pair of support covering feet with front grille GTFA

ZL Pair of support covering feet GTFL

ZC Pair of support covering feet GTCL

ZLG Pair of support covering feet with front grille GTFL

ZCG Pair of support covering feet with front grille GTCL

D Support spacers GTFC

PVL Rear painted panel for vertical installation fan coils with cabinet GTFL-GTFU

PVC Rear painted panel for vertical installation fan coils with cabinet GTCL

PVA Rear painted panel for vertical installation fan coils with cabinet GTFA

PH Rear painted panel for horizontal installation fan coils with cabinet GTFU

MOTOR-DRIVEN VALVES AND DRIP TRAYS

VK S 3-way valve with ON/OFF electrothermal motor and hydraulic kit for standard heat exchanger ALL

VK DF 3-way valve with ON/OFF electrothermal motor and hydraulic kit for DF heat exchanger GTFL-GTFA-GTCL-GTFU-GTFP-GTFC-GTFF

GIVK Valve body insulation shell ALL

BV Auxiliary water drip tray for vertical installation fan coil units ALL

BH Auxiliary water drip tray for horizontal installation fan coil units GTFU-GTFP-GTFC-GTFF

KSC Condensate drainage pump GTFC-GTFF

ELECTRICAL HEATING ELEMENTS

RE Electric heating element complete with installation kit, safety devices, power relay box, heat resistant grilles GTFL-GTFU-GTFP-GTFC-GTFF

AIR INTAKE AND OUTLET GRILLES

GE+C Anodised aluminium grille for external air intake, complete with subframe GTFL-GTFA-GTCL-GTFU-GTFP-GTFC-GTFF

GEF+C Anodised aluminium grille for external air intake, complete with filter and subframe GTFC-GTFF

GM+C Anodised aluminium double-row finned air outlet grille, complete with subframe GTFC-GTFF

RGCCD Plenum with circular collars for air outlet grille GTFC-GTFF

INLET AND OUTLET CONNECTORS

RM90 Angular air outlet connector GTFC-GTFF

RMD Straight air outlet connector GTFC-GTFF

RA90 Angular air inlet connectors GTFC

RAD Straight air inlet connectors GTFC

RMCD Air outlet plenum with circular collars GTFC-GTFF

EXTERNAL AIR INTAKE LOUVERS

S Manual external air intake louver GTFL-GTFA-GTCL-GTFP-GTFC

SC Manual external air intake louver GTCL

SM Motor-driven external air intake louver GTFL-GTFA-GTCL-GTFP-GTFC

SM-C Motor-driven external air intake louver GTCL

ESTRO GT

8

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4 RATINGS AND TECHNICAL DATA

1 Water temperature 7/12°C, air temp. 27°C D.B., 19°C W.B. (47% R.H.)
2 Water temperature 50°C, water flow rate same as in cooling mode, air inlet temperature 20°C
3 Water temperature 70/60°C, air temp. 20°C
4 Sound power measured according to standards ISO 3741 and ISO 3742
5 Sound pressure level measured at a distance of 1 m with a directivity factor of 4

ESTRO GT 1 3 4 4M

Fan speed min med max min med max min med max min med max

Total cooling capacity (1) (E) kW 0,83 0,98 1,12 1,24 1,48 1,74 1,36 1,64 1,94 1,50 1,85 2,24

Sensible cooling capacity (1) (E) kW 0,63 0,75 0,85 0,93 1,30 1,30 1,00 1,21 1,44 1,06 1,57 1,60

Water flow (1) l/h 142 168 193 213 254 298 234 282 333 258 317 384

Water pressure drop (1) (E) kPa 4 6 7 8 11 14 6 9 12 10 14 20

Heating capacity (2) (E) kW 1,13 1,34 1,53 1,63 1,94 2,27 1,78 2,15 2,55 1,86 2,26 2,74

Water pressure drop (2) (E) kPa 3 5 6 8 9 12 5 7 10 11 11 16

Heating capacity (3) kW 1,97 2,32 2,65 2,79 3,33 3,89 3,04 3,67 4,35 3,08 3,80 4,62

Water flow (3) l/h 172 205 230 245 292 341 267 322 382 270 333 405

Water pressure drop (3) kPa 4 6 7 8 11 14 6 8 11 8 12 16

Air flow m

3

/h 149 189 231 211 271 344 211 271 344 211 271 344

Power imput (E) W 5 6 8 7 10 16 7 10 16 7 10 16

Control voltage V 2,1 2,5 3,1 2,8 3,7 5 3 3,7 5 2,8 3,7 5

Sound power level (4) (E) dB/A 26 32 38 36 43 49 37 44 50 37 44 50

Sound pressure level dB/A 21 27 33 31 38 44 32 39 45 32 39 45

Additional coil heating capacity (3) (E) kW 1,34 1,52 1,69 1,60 1,81 2,03 1,58 1,79 2,00 not available

Water flow (3) l/h 118 134 148 141 159 178 139 157 175 not available

Water pressure drop (3) (E) kPa 3 4 4 6 7 8 5 6 7 not available

Hydraulic connections

std

inch

1/2 1/2 1/2 1/2

DF

inch

1/2 1/2 1/2 not available

Water content

std

dm3

0,5 0,5 0,7 0,9

DF

dm3

0,2 0,2 0,2 not available

ESTRO GT 5 6 6M 7

Fan speed min med max min med max min med max min med max

Total cooling capacity (1) (E) kW 1,15 2,02 2,42 1,76 2,40 2,97 1,93 2,64 3,29 1,97 2,63 3,42

Sensible cooling capacity (1) (E) kW 1,17 1,57 1,93 1,26 1,73 2,15 1,33 1,83 2,30 1,51 2,04 2,72

Water flow (1) l/h 266 347 415 302 412 510 331 453 565 338 451 587

Water pressure drop (1) (E) kPa 7 12 16 5 8 12 7 12 17 4 7 12

Heating capacity (2) (E) kW 2,05 2,67 3,20 2,28 3,09 3,83 2,33 3,21 4,04 2,80 3,69 4,76

Water pressure drop (2) (E) kPa 6 10 13 4 7 9 6 10 14 4 6 9

Heating capacity (3) kW 3,50 4,56 5,47 3,86 5,24 6,48 3,91 5,39 6,79 4,82 6,34 8,21

Water flow (3) l/h 307 400 480 339 459 569 343 473 595 423 556 720

Water pressure drop (3) kPa 7 12 16 4 7 11 6 10 14 5 8 13

Air flow m

3

/h 241 341 442 241 341 442 241 341 442 320 450 640

Power imput (E) W 5 9 14 5 9 14 5 9 14 6 9 19

Control voltage V 2,5 4 5,5 2,5 3,9 5,5 2,5 4 5,5 2,5 3,6 5,7

Sound power level (4) (E) dB/A 32 42 48 33 42 48 33 42 48 35 43 51

Sound pressure level dB/A 27 37 43 28 37 43 28 37 43 30 38 46

Additional coil heating capacity (3) (E) kW 2,11 2,56 2,91 2,22 2,68 3,05 not available 3,28 3,99 4,80

Water flow (3) l/h 185 224 255 193 235 267 not available 288 350 421

Water pressure drop (3) (E) kPa 3 4 4 3 4 5 not available 4 6 9

Hydraulic connections

std

inch

1/2 1/2 1/2 1/2

DF

inch

1/2 1/2 not available 1/2

Water content

std

dm3

0,7 1,0 1,33 1,0

DF

dm3

0,3 0,3 not available 0,4

9

ESTRO GT

ESTRO GT 1.2 1 3 4 5 6 7 8 9 95 11 12

GTFL Kg 19,1 20,1 20,1 24,8 24,8 30,4 30,4 30,9 31,0 41,3 50,4
GTCL Kg 19,7 20,0 20,6 25,5 26,7 31,0 32,3 32,3 - - -
GTFA Kg 18,1 19,1 19,1 23,3 23,3 28,4 28,4 28,9 - 38,8 47,9
GTFC Kg 14,1 15,1 15,1 18,8 18,8 22,9 22,9 23,4 24,0 31,8 38,8
GTFU Kg 20,1 21,1 21,1 26,8 26,8 32,4 32,4 32,9 33,0 43,8 53,0
GTFF Kg 14,1 15,1 15,1 18,8 18,8 22,9 22,9 23,4 - 31,8 38,8
GTFP Kg 20,1 21,1 21,1 26,8 26,8 32,4 32,4 32,9 - 43,8 53,0

FC66003937 - Rev 00

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4.1 WEIGHTS

4 RATINGS AND TECHNICAL DATA

1 Water temperature 7/12°C, air temp. 27°C D.B., 19°C W.B. (47% R.H.)
2 Water temperature 50°C, water flow rate same as in cooling mode, air inlet temperature 20°C
3 Water temperature 70/60°C, air temp. 20°C
4 Sound power measured according to standards ISO 3741 and ISO 3742
5 Sound pressure level measured at a distance of 1 m with a directivity factor of 4

ESTRO GT 7M 8 8M 9

Fan speed min med max min med max min med max min med max

Total cooling capacity (1) (E) kW 2,48 3,39 4,58 2,64 3,27 4,30 2,78 3,70 4,96 3,17 3,89 0,02

Sensible cooling capacity (1) (E) kW 1,73 2,37 3,22 1,80 2,38 3,13 1,94 2,59 3,50 2,07 2,82 3,81

Water flow (1) l/h 427 582 785 423 561 738 477 635 850 1.650 2.230 3.030

Water pressure drop (1) (E) kPa 6 11 18 5 8 12 7 12 20 7 10 14

Heating capacity (2) (E) kW 3,01 4,08 5,49 3,07 3,93 5,02 3,36 4,45 5,94 4,02 4,88 5,87

Water pressure drop (2) (E) kPa 5 9 14 4 6 10 6 10 17 6 8 12

Heating capacity (3) kW 5,06 6,84 9,22 5,21 6,62 8,42 5,64 7,46 9,98 6,81 8,25 9,93

Water flow (3) l/h 444 601 808 457 581 739 495 654 876 597 724 871

Water pressure drop (3) kPa 5 8 14 4 6 9 6 10 16 6 9 12

Air flow m

3

/h 320 450 640 361 497 706 361 497 706 470 605 785

Power imput (E) W 6 9 19 7 11 24 7 11 24 10 17 32

Control voltage V 2,5 3,6 5,7 2,8 4,1 6,5 2,8 4,1 6,5 3,8 5,3 7,6

Sound power level (4) (E) dB/A 35 43 51 35 43 53 35 43 53 43 49 56

Sound pressure level dB/A 30 38 46 30 38 48 30 38 48 38 44 51

Additional coil heating capacity (3) (E) kW not available 3,56 4,26 5,11 not available 4,09 4,67 5,31

Water flow (3) l/h not available 312 374 448 not available 359 410 466

Water pressure drop (3) (E) kPa not available 7 9 13 not available 6 8 10

Hydraulic connections

std

inch

1/2 1/2 1/2 1/2

DF

inch

not available 1/2 not available 1/2

Water content

std

dm3

1,33 1,4 1,8 1,4

DF

dm3

not available 0,4 not available 0,4

ESTRO GT 9M

Fan speed min med max

Total cooling capacity (1) (E) kW 3,52 4,37 5,40

Sensible cooling capacity (1) (E) kW 2,47 3,07 3,82

Water flow (1) l/h 605 750 926

Water pressure drop (1) (E) kPa 11 16 24

Heating capacity (2) (E) kW 4,24 5,24 6,47

Water pressure drop (2) (E) kPa 9 13 19

Heating capacity (3) kW 7,11 8,79 10,87

Water flow (3) l/h 623 772 953

Water pressure drop (3) kPa 9 13 19

Air flow m

3

/h 470 605 785

Power imput (E) W 10 17 32

Control voltage V 3,8 5,3 7,6

Sound power level (4) (E) dB/A 43 49 56

Sound pressure level dB/A 38 44 51

Additional coil heating capacity (3) (E) kW not available

Water flow (3) l/h not available

Water pressure drop (3) (E) kPa not available

Hydraulic connections

std

inch

1/2

DF

inch

not available

Water content

std

dm3

1,8

DF

dm3

not available

4.1 WEIGHTS

ESTRO GT

10

Tbs1 / Tbu1 (UR%) 24 °C / 17 °C (50%)

Tw

1

/ Tw2 7 / 12 °C 9 / 14 °C

Modello

Model

Fan

speed

Pin Qa Lw PFT PFS Qw Dpw PFT PFS Qw Dpw

W m

3

/h dB(A) W W l/h kPa W W l/h kPa

1

min 5 149 26 540 480 93 2 460 460 79 1

med 6 189 32 610 560 104 2 530 530 91 2

max 8 231 38 740 740 127 3 630 630 108 3

3

min 7 211 36 770 730 132 3 670 670 115 3

med 10 271 43 940 880 162 5 810 810 140 4

max 16 344 49 1080 1000 185 6 940 940 161 5

4

min 7 211 37 890 780 153 3 750 750 128 2

med 10 271 44 1100 960 188 4 890 890 154 3

max 16 344 50 1270 1100 217 6 1040 1040 178 4

4M

min 7 211 37 1040 850 179 5 790 770 135 3

med 10 271 44 1290 1060 221 7 950 950 163 4

max 16 344 50 1560 1290 268 10 1160 1160 199 6

5

min 5 241 32 960 890 165 3 830 830 142 2

med 9 341 42 1250 1250 215 5 1040 1040 179 4

max 14 442 48 1500 1500 258 7 1260 1260 216 5

6

min 5 241 33 1200 1000 205 2 970 910 167 2

med 9 341 42 1440 1270 247 3 1230 1230 212 2

max 14 442 48 1860 1620 318 5 1500 1500 257 3

6M

min 5 241 33 1340 1060 230 4 960 900 165 2

med 9 341 42 1830 1460 315 6 1320 1270 227 3

max 14 442 48 2310 1850 397 9 1670 1630 286 5

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.1 COOLING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tbu1 Air inlet temperature (wet bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PFT Total cooling capacity
PFS Sensible cooling capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

11

ESTRO GT

Tbs1 / Tbu1 (UR%) 24 °C / 17 °C (50%)

Tw

1

/ Tw2 7 / 12 °C 9 / 14 °C

Modello

Model

Fan

speed

Pin Qa Lw PFT PFS Qw Dpw PFT PFS Qw Dpw

W m

3

/h dB(A) W W l/h kPa W W l/h kPa

7

min 6 320 35 1190 1090 204 2 1080 1080 185 2

med 9 450 43 1610 1610 277 3 1310 1310 224 2

max 19 640 51 2190 2190 376 5 1800 1800 309 4

7M

min 6 320 35 1700 1370 292 3 1310 1220 225 2

med 9 450 43 2290 1860 394 5 1690 1660 291 3

max 19 640 51 3180 2570 546 9 2300 2300 394 5

8

min 7 361 35 1610 1390 275 2 1360 1330 234 2

med 11 497 43 1960 1870 336 3 1650 1650 284 2

max 24 706 53 2690 2410 463 5 2190 2190 376 4

8M

min 7 361 35 1830 1500 314 4 1440 1360 247 2

med 11 497 43 2530 2050 433 6 1830 1810 314 4

max 24 706 53 3450 2800 593 11 2500 2500 429 6

9

min 10 470 43 1810 1710 311 3 1620 1620 278 2

med 17 605 49 2340 2220 401 4 1930 1930 331 3

max 32 785 56 3030 2840 519 6 2430 2430 418 4

9M

min 10 470 43 2390 1940 411 6 1750 1720 300 3

med 17 605 49 3030 2450 519 9 2190 2190 376 5

max 32 785 56 3770 3060 647 13 2730 2730 469 7

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.1 COOLING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tbu1 Air inlet temperature (wet bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PFT Total cooling capacity
PFS Sensible cooling capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

ESTRO GT

12

Tbs1 / Tbu1 (UR%) 27 °C / 19 °C (47%)

Tw

1

/ Tw2 7 / 12 °C 9 / 14 °C

Modello

Model

Fan

speed

Pin Qa Lw PFT PFS Qw Dpw PFT PFS Qw Dpw

W m

3

/h dB(A) W W l/h kPa W W l/h kPa

1

min 5 149 26 830 630 142 4 600 540 103 2

med 6 189 32 980 750 168 6 660 630 114 3

max 8 231 38 1120 850 193 7 770 720 132 4

3

min 7 211 36 1240 930 213 8 860 790 148 4

med 10 271 43 1480 1110 254 11 1040 950 178 6

max 16 344 49 1740 1300 298 14 1220 1110 210 8

4

min 7 211 37 1360 1000 234 6 980 850 168 4

med 10 271 44 1640 1210 282 9 1180 1030 203 5

max 16 344 50 1940 1440 333 12 1400 1230 241 7

4M

min 7 211 37 1500 1060 258 10 1150 920 197 6

med 10 271 44 1850 1320 317 14 1410 1140 243 9

max 16 344 50 2240 1600 384 20 1710 1400 294 12

5

min 5 241 32 1150 1170 266 7 1080 980 186 4

med 9 341 42 2020 1570 347 12 1450 1340 248 7

max 14 442 48 2420 1930 415 16 1640 1640 282 8

6

min 5 241 33 1760 1260 302 5 1260 1060 216 3

med 9 341 42 2400 1730 412 8 1710 1450 294 4

max 14 442 48 2970 2150 510 12 2150 1820 370 7

6M

min 5 241 33 1930 1330 331 7 1460 1140 251 4

med 9 341 42 2640 1830 453 12 2030 1580 349 7

max 14 442 48 3290 2300 565 17 2540 1990 437 11

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.1 COOLING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tbu1 Air inlet temperature (wet bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PFT Total cooling capacity
PFS Sensible cooling capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

13

ESTRO GT

Tbs1 / Tbu1 (UR%) 27 °C / 19 °C (47%)

Tw

1

/ Tw2 7 / 12 °C 9 / 14 °C

Modello

Model

Fan

speed

Pin Qa Lw PFT PFS Qw Dpw PFT PFS Qw Dpw

W m

3

/h dB(A) W W l/h kPa W W l/h kPa

7

min 6 320 35 1970 1510 338 4 1340 1290 230 2

med 9 450 43 2630 2040 451 7 1800 1780 309 4

max 19 640 51 3420 2720 587 12 2350 2350 404 6

7M

min 6 320 35 2480 1730 427 6 1820 1460 312 3

med 9 450 43 3390 2370 582 11 2580 2040 442 6

max 19 640 51 4580 3220 785 18 3510 2790 603 11

8

min 7 361 35 2640 1800 423 5 1670 1480 287 2

med 11 497 43 3270 2380 561 8 2250 1980 386 4

max 24 706 53 4300 3130 738 12 3080 2650 529 7

8M

min 7 361 35 2780 1940 477 7 2070 1650 356 4

med 11 497 43 3700 2590 635 12 2820 2230 485 8

max 24 706 53 4960 3500 850 20 3810 3030 654 13

9

min 10 470 43 3170 2320 544 7 2170 1920 373 4

med 17 605 49 3890 2870 668 10 2770 2430 475 5

max 32 785 56 4740 3530 813 14 3420 3020 588 8

9M

min 10 470 43 3520 2470 605 11 2680 2120 460 7

med 17 605 49 4370 3070 750 16 3350 2660 575 10

max 32 785 56 5400 3820 926 24 4150 3310 713 15

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.1 COOLING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tbu1 Air inlet temperature (wet bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PFT Total cooling capacity
PFS Sensible cooling capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

ESTRO GT

14

Tbs1 20 °C

Tw

1

/ Tw2 45 / 40 °C 60 / 50 °C 70 / 60 °C

Modello

Model

Fan

speed

Pin Qa Lw PT Qw Dpw PFT Qw Dpw PFT Qw Dpw

W m

3

/h dB(A) W l/h kPa W l/h kPa W l/h kPa

1

min 5 149 26 950 166 5 1490 130 3 1940 171 4

med 6 189 32 1110 194 6 1740 152 4 2270 199 6

max 8 231 38 1320 229 8 2050 179 5 2680 235 8

3

min 7 211 36 1450 252 9 2270 198 6 2930 257 8

med 10 271 43 1720 300 12 2700 236 7 3500 307 11

max 16 344 49 1840 320 14 2870 251 8 3740 329 13

4

min 7 211 37 1500 260 6 2350 206 4 3040 267 6

med 10 271 44 1810 315 9 2840 248 6 3670 322 8

max 16 344 50 2150 373 12 3360 293 7 4350 382 11

4M

min 7 211 37 1530 265 9 2400 210 5 3080 270 8

med 10 271 44 1880 328 12 2960 259 8 3800 333 12

max 16 344 50 2290 397 17 3590 313 11 4620 405 16

5

min 5 241 32 1740 302 8 2730 239 5 3520 308 7

med 9 341 42 2260 393 12 3540 309 8 4570 401 12

max 14 442 48 2700 469 17 4220 369 10 5470 480 16

6

min 5 241 33 1910 332 5 3020 264 3 3860 339 4

med 9 341 42 2580 449 8 4070 356 5 5220 458 7

max 14 442 48 3200 556 11 5030 439 7 6460 567 11

6M

min 5 241 33 1940 338 6 3080 269 4 3910 343 6

med 9 341 42 2680 466 10 4240 370 7 5390 473 10

max 14 442 48 3370 586 15 5320 465 10 6790 595 14

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.2 HEATING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PT Heating capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

15

ESTRO GT

Tbs1 20 °C

Tw

1

/ Tw2 45 / 40 °C 60 / 50 °C 70 / 60 °C

Modello

Model

Fan

speed

Pin Qa Lw PT Qw Dpw PFT Qw Dpw PFT Qw Dpw

W m

3

/h dB(A) W l/h kPa W l/h kPa W l/h kPa

7

min 6 320 35 2390 415 5 3760 328 3 4830 424 5

med 9 450 43 3130 545 8 4920 430 5 6340 556 8

max 19 640 51 4050 704 13 6330 553 8 8210 720 13

7M

min 6 320 35 2510 436 5 3970 347 3 5060 444 5

med 9 450 43 3400 591 9 5360 468 6 6840 601 8

max 19 640 51 4570 795 15 7200 629 10 9220 808 14

8

min 7 361 35 2470 430 4 3880 339 2 5030 442 4

med 11 497 43 3240 563 6 5070 443 4 6570 576 6

max 24 706 53 4240 736 10 6620 578 6 8570 752 10

8M

min 7 361 35 2800 486 6 4420 386 4 5640 495 6

med 11 497 43 3700 644 10 5840 510 7 7460 654 10

max 24 706 53 4950 861 17 7790 680 11 9980 876 16

9

min 10 470 43 3310 575 6 5190 454 4 6690 588 6

med 17 605 49 4080 709 9 6400 559 6 8250 724 9

max 32 785 56 4980 866 13 7790 681 8 10080 884 12

9M

min 10 470 43 3530 613 10 5570 486 6 7110 623 9

med 17 605 49 4370 759 14 6870 601 9 8790 772 13

max 32 785 56 5390 937 20 8470 740 13 10870 953 19

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.2 HEATING MODE: MODELS WITH 1 HEAT EXCHANGER

Tbs1 Air inlet temperature (dry bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PT Heating capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

ESTRO GT

16

Tbs

1

20 °C

Tw

1

/ Tw2 45 / 40 °C 60 / 50 °C 70 / 60 °C

Modello

Model

Fan

speed

Qa PT Qw Dpw PFT Qw Dpw PFT Qw Dpw

m

3

/h W l/h kPa W l/h kPa W l/h kPa

1DF

min 146 650 113 3 1000 87 2 1350 118 3

med 184 720 126 4 1110 97 2 1500 132 4

max 226 820 143 5 1270 111 3 1700 149 4

3DF

min 205 750 131 5 1160 101 3 1560 137 5

med 261 860 150 7 1330 116 4 1780 156 7

max 330 980 170 8 1510 132 5 2020 177 8

4DF

min 205 750 131 5 1160 101 3 1560 137 5

med 261 860 150 6 1330 116 4 1780 156 6

max 327 980 170 8 1500 131 5 2010 176 7

5DF

min 238 970 169 2 1480 130 1 2060 181 2

med 334 1190 208 3 1820 159 2 2530 222 3

max 432 1390 241 4 2120 185 3 2920 257 4

6DF

min 237 1030 179 3 1570 137 2 2180 191 3

med 332 1260 220 4 1930 169 2 2680 235 4

max 431 1470 255 5 2240 196 3 3080 270 5

7DF

min 316 1560 270 4 2410 210 3 3210 282 4

med 444 1930 336 6 2980 260 4 3960 347 6

max 628 2340 406 9 3600 315 5 4800 421 9

8DF

min 356 1750 304 7 2710 237 4 3600 316 7

med 490 2070 360 9 3200 280 6 4250 373 9

max 690 2460 427 13 3790 331 8 5050 443 12

9DF

min 460 1970 343 6 3050 266 4 4040 355 6

med 593 2260 393 8 3490 305 5 4650 408 8

max 763 2580 448 10 3970 347 6 5300 465 10

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.3 HEATING MODE: MODELS WITH 2 HEAT EXCHANGERS (4 PIPE SYSTEMS)

Tbs1 Air inlet temperature (dry bulb)
Tw1 Water inlet temperature
Tw2 Outlet water temperature
PT Heating capacity
Qw Water flow rate
Dpw Pressure drop, water side
Pin Power input
Qa Air flow rate
Lw Sound power level

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

17

ESTRO GT

Octave band

125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Global

Modello

Model

Fan

speed

Pin Qa Lw Lw Lw Lw Lw Lw Lw Lw

W m

3

/h dB dB dB dB dB dB dB dB(A)

1

min 5 149 22,2 27,80 25,00 20,90 14,50 - - 26

med 6 189 28,2 33,8 31,0 26,9 20,5 - - 32

max 8 231 34,2 39,8 37,0 32,9 26,5 17,7 - 38

3

min 7 211 32,2 37,8 35,0 30,9 24,5 15,7 - 36

med 10 271 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

max 16 344 45,2 50,8 48,0 43,9 37,5 28,7 21,2 49

4

min 7 211 33,2 38,8 36,0 31,9 25,5 16,7 - 37

med 10 271 40,2 45,8 43,0 38,9 32,5 23,7 16,2 44

max 16 344 46,2 51,8 49,0 44,9 38,5 29,7 22,2 50

4M

min 7 211 33,2 38,8 36,0 31,9 25,5 16,7 - 37

med 10 271 40,2 45,8 43,0 38,9 32,5 23,7 16,2 44

max 16 344 46,2 51,8 49,0 44,9 38,5 29,7 22,2 50

5

min 5 241 28,2 33,8 31,0 26,9 20,5 11,7 - 32

med 9 341 38,2 43,8 41,0 36,9 30,5 21,7 14,2 42

max 14 442 44,2 49,8 47,0 42,9 36,5 27,7 20,2 48

6

min 5 241 29,2 34,8 32,0 27,9 21,5 12,7 - 33

med 9 341 38,2 43,8 41,0 36,9 30,5 21,7 14,2 42

max 14 442 44,2 49,8 47,0 42,9 36,5 27,7 20,2 48

6M

min 5 241 29,2 34,8 32,0 27,9 21,5 12,7 - 33

med 9 341 38,2 43,8 41,0 36,9 30,5 21,7 14,2 42

max 14 442 44,2 49,8 47,0 42,9 36,5 27,7 20,2 48

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

5 PERFORMANCES

5.4 SOUND LEVEL

Lw Sound power level by octave band, not weighted
Pin Power input
Qa Air flow rate
Speed

Speed selection

Setting

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

ESTRO GT

18

Octave band

125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Global

Modello

Model

Fan

speed

Pin Qa Lw Lw Lw Lw Lw Lw Lw Lw

W m

3

/h dB dB dB dB dB dB dB dB(A)

7

min 6 320 31,2 36,8 34,0 29,9 23,5 14,7 - 35

med 9 450 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

max 19 640 47,2 52,8 50,0 45,9 39,5 30,7 23,2 51

7M

min 6 320 31,2 36,8 34,0 29,9 23,5 14,7 7,2 35

med 9 450 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

max 19 640 47,2 52,8 50,0 45,9 39,5 30,7 23,2 51

8

min 7 361 31,2 36,8 34,0 29,9 23,5 14,7 - 35

med 11 497 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

max 24 706 49,2 54,8 52,0 47,9 41,5 32,7 25,2 53

8M

min 7 361 31,2 36,8 34,0 29,9 23,5 14,7 - 35

med 11 497 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

max 24 706 49,2 54,8 52,0 47,9 41,5 32,7 25,2 53

9

min 10 470 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

med 17 605 45,2 50,8 48,0 43,9 37,5 28,7 21,2 49

max 32 785 52,2 57,8 55,0 50,9 44,5 35,7 28,2 56

9M

min 10 470 39,2 44,8 42,0 37,9 31,5 22,7 15,2 43

med 17 605 45,2 50,8 48,0 43,9 37,5 28,7 21,2 49

max 32 785 52,2 57,8 55,0 50,9 44,5 35,7 28,2 56

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

NOTE: for all working conditions not mentioned in the table, refer to the Galletti selection program.

5 PERFORMANCES

5.4 SOUND LEVEL

Lw Sound power level by octave band, not weighted
Pin Power input
Qa Air flow rate
Speed

Speed selection

Setting

19

ESTRO GT

90

90

100

400

140

GTFL GTCL A B C D E F G H L M N P R

1 - 4 1 - 4 774 226 498 51 458 163 263 149 198 187 335 99 486

5 - 6 5 - 6 984 226 708 51 458 163 263 149 198 187 335 99 486

7 - 9 7 - 9 1194 226 918 51 458 163 263 149 198 187 335 99 486

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

6 OVERALL DIMENSIONS

Overall dimensions of GTFL/GTCL, wall-mounted with cabinet, vertical air flow

1 Clearance for water connection
2 Slots for installation on the wall
3 Clearance for electrical connections
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet

ESTRO GT

20







 









































GTFA A B C D E F G H K L M N P R

1 - 4 774 228 498 53 458 166 263 149 145 201 189 334 102 486

5 - 6 984 228 708 53 458 166 263 149 145 201 189 334 102 486

7 - 9 1194 228 918 53 458 166 263 149 145 201 189 334 102 486

90

90

140

100

400

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

Overall dimensions of GTFA, wall-mounted with cabinet, inclined front air flow

1 Clearance for water connections
2 Slots for installation on the wall
3 Clearance for electrical connections
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet

6 OVERALL DIMENSIONS

21

ESTRO GT

GTFU A B C D E F G H L M N P R S T Z

1 - 4 774 226 498 51 458 163 263 149 198 187 335 99 486 208 198 246

5 - 6 984 226 708 51 458 163 263 149 198 187 335 99 486 208 198 246

7 - 9 1194 226 918 51 458 163 263 149 198 187 335 99 486 208 198 246







 

















































90

400

90

140

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

6 OVERALL DIMENSIONS

Overall dimensions of GTFU, floor/ceiling mounted

1 Clearance for water connection
2 Slots for installation on the wall
3 Clearance for electrical connections
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet

ESTRO GT

22







 









































GTFP A B C D E F G M N P R S T

1 - 4 774 226 498 51 458 163 263 187 335 99 486 208 198

5 - 6 984 226 708 51 458 163 263 1187 335 99 486 208 198

7 - 9 1194 226 918 51 458 163 263 1187 335 99 486 208 198

90

100

140

90

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

1 Clearance for water connections
2 Slots for installation on the wall
3 Clearance for electrical connections
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet

6 OVERALL DIMENSIONS

Overall dimensions of GTFP ceiling mounted with cabinet, rear air intake

23

ESTRO GT

C

A



91 308

535

2

6

V

Y113

7

U

Q20

G

N

E

R

L

B

D

P

M

F

H

4

4 DF

4 DF

4

5

S

5

T

25

300

300

140

100

50

GTFC A B C D E F G H L M N P Q R S T U V Y

1 - 4 584 224 498 51 458 163 263 149 198 187 335 99 189 486 208 198 436 464 61

5 - 6 794 224 708 51 458 163 263 149 198 187 335 99 189 486 208 198 646 674 61

7 - 9 1004 224 918 51 458 163 263 149 198 187 335 99 189 486 208 198 856 884 61

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

6 OVERALL DIMENSIONS

2 Slots for installation on the wall
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet
6 Air outlet
7 Air intake

Overall dimensions of GTFC horizontal/vertical recess mounted

ESTRO GT

24

C

A



91 308

535

2

6

V

W113

G

N

E

R

L

B

D

P

M

F

H

4

4 DF

4 DF

4

5

S

5

T

25

U

7

Q15

GTFF A B C D E F G H L M N P Q R S T U V W

1 - 4 584 224 498 51 458 163 263 149 198 187 335 99 210 486 208 198 436 464 61

5 - 6 794 224 708 51 458 163 263 149 198 187 335 99 210 486 208 198 646 674 61

7 - 9 1004 224 918 51 458 163 263 149 198 187 335 99 210 486 208 198 856 884 61

300

50

300

140

FC66003937 - Rev 00ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

6 OVERALL DIMENSIONS

2 Slots for installation on the wall
4 Standard heat exchanger water connections
4DF Water connection for 1-row additional heat exchanger model DF
5 Drain outlet
6 Air outlet
7 Air intake

Overall dimensions of GTFF, horizontal / vertical recess mounted, front air intake

25

ESTRO GT

FC66003933-1

FC66003937 - Rev 00

ALL COPYING, EVEN PARTIAL, OF THIS MANUAL IS STRICTLY FORBIDDEN

7 WIRING DIAGRAMS

MYCOMFORT LARGE

Wall-mounted microprocessor control.

Key to symbols used in wiring diagrams:

Vo Extra-low speed
V1 Minimum speed
V2 Medium speed
V3 Maximum speed
L Phase
PE Ground
N Neutral
RE Heating element
SW Water sensor
SA Air sensor
SU Humidity Probe
DI1 Digital 1 input
DI2 Digital 2 input

Each fan-coil requires a switch (IL) on the feeder line with a distance of at least 3 mm between the opening contacts, and a suitable safety fuse (F).

Warning

the EMC filters connected to frequency converters (inver ters) can create leakage currents toward ground (in order to make the unit EMC
compliant, by reducing conducted emissions on power supply line). Depending on installation site, this can force the cut out of the differential safety switch.
It is recommended to install a separate differential safety switch, only for the BLDC unit, with an adjustable threshold for the cut out current.

CI12 Digital input common
A/B/GND RS 485
F Fuse (not supplied)
IL Circuit breaker (not supplied)
VC Solenoid valve - Cooling
VH Solenoid valve - Heating

..... Electrical connections to be made by installer

101 0-10V 1 Output
COM 0-10V Output Common
102 0-10V 2 Output
DO2 Digital 2 output
DO1 Digital 1 output
CO12 Digital output Common

ESTRO GT wiring diagram , BRUSHLESS EBM motor

ESTRO GT

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EVO CONTROL

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7 WIRING DIAGRAMS

Wiring with disconnecting inverter supply

ESTRO GT wiring diagram , BRUSHLESS EBM motor

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8 GREEN -TECH MOTOR ASSEMBLY

8.1 ELECTRICAL CONECTIONS

Legend

1 Strip Molex Micro Fit 3.0 04365 00400 (matching on 04364 50400)

1.1 10V

1.2 Tachimetric out

1.3 Signal 0-10V lin. / PWM

1.4 GND
2 Lumberg connector 3642 03 K01 (matching on 3626 03 K01)

2.1 PE (ground)

2.2 N (neutral)

2.3 L (phase)
3 Fixing points

8.2 INVERTER CONTROL DIAGRAM

ESTRO GT

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Modulating devices control

EVO is capable of simultaneously controlling up to two modulating valves
and one BLDC fan, making it possible to vary the air flow rate and the water
flow rate in the heat exchanger, adapting to the thermal load.

Humidity control

EVO offers the possibility of automatically activating a dehumidification
process depending on the relative humidity and a settable setpoint. This
function requires a humidity sensor that is available as an accessory.

Serial Communication

The controller has serial ports for RS485 communication and power-line
communication that allow the development of control networks that are
adequate for every need.

ZA - Pair of support covering feet for GTFA
models

The ZA covering feet, designed for the
installation on éstro GTFA models are supplied
in pairs and comprise supports for fastening to
the base unit and outer coverings for fastening
to the cabinet. They are used to conceal the
plumbing (pipes leading up from the floor) and
in cases where the fan coil unit cannot be anchored to the wall. The height
of covering feet is 100 mm.

ZAG - Pair of support covering feet with front
grille for FA models

The ZAG covering feet, designed for the
installation on éstro GTFA models are supplied
in pairs and comprise supports for fastening to
the base unit, outer coverings for fastening to
the cabinet and the front covering grille. They
are used to conceal the plumbing (pipes leading
up from the floor) and in cases where the fan coil unit cannot be anchored
to the wall. The height of covering feet is 100 mm.

ZL / ZC - Pair of support covering feet for
GTFL, GTCL models

The ZL, ZC, covering feet, designed for the
installation on éstro GTFL, GTCL models are
supplied in pairs and comprise supports for
fastening to the base unit and outer coverings
for fastening to the cabinet.
They are used to conceal the plumbing (pipes
leading up from the floor) and in cases where the fan coil unit cannot be
anchored to the wall. The height of covering feet is 100 mm.

ZLG / ZCG - Pair of support covering feet with
front grille for GTFL, GTCL models

The ZLG, ZCG covering feet, designed for the
installation on éstro GTFL, GTCL models are
supplied in pairs and comprise supports for
fastening to the base unit, outer coverings for
fastening to the cabinet and the front covering
grille.
They are used to conceal the plumbing (pipes leading up from the floor) and
in cases where the fan coil unit cannot be anchored to the wall. The height
of covering feet is 100 mm.

9 ACCESSORIES

MYCOMFORT LARGE - Wall-mounted microprocessor
control, GALLETTI model MYCOMFORT LARGE

having the following main features:

- Room air temperature reading and adjustment.

- Room humidity reading and adjustment.

- Water temperature reading (water sensor as an
optional).

- Manual and automatic adjustment of fan speed.

- Manual and automatic switching of heating
and cooling mode depending on the water
temperature within the heat exchanger or on the room temperature, with
a neutral zone that can be selected in the range from 2° to 5°C.

- Clock and hourly timer-programmed operation.

- 2 analogue outputs for controlling modulating devices 0-10V.

- 2 digital outputs for controlling (On/Off) external devices (no-voltage
contacts).

- Serial port for Bus connection.

The controller is equipped with a large display (3”) to show and set all the
functions of the unit.
Using the installation kit available, mycomfort can be mounted on the unit.

EVO - Electronic microprocessor
controller with remote user
interface

Intuitive and user-friendly multi­purpose regulator
EVO encompasses the best of
Galletti adjustment with regard to
hydronic indoor units.
The EVO software, which was
developed entirely by Galletti’s
Technical Depar tment, consists
of two distinct parts in two
microprocessors. The first of these, resident on the power board, manages
the monitoring of the parameters and the adjustment logics. The second
part of the software, which is loaded on the user interface microprocessor,
guarantees true communication, by means of which the installer and the
user are guided in the configuration and use of the controller.
If on-board installation of the power board is requested, which is an option
that is available for the majority of Galletti hydronic indoor units, during the
wiring phase you just need to connect the user interface using a two-core
shielded cable. This extraordinary simplicity cuts installation time and costs
in half.
The EVO controller has been designed to govern the operation of Galletti
indoor units with single-phase multispeed asynchronous motor or
modulating speed BLDC motors. Specifically, its advanced technology
makes it possible to establish control networks that are suited to meet any
need, for automatic and intelligent management of the system’s indoor
units.

PLUS

Considerable savings in the installation phase
User-friendly interface
RS485 and OC serial communication
Advanced de-humidifying function
Simultaneous control of 3 modulating devices
Advanced control of time schedules

FUNCTIONS
Automatic control of time slots

The user interface makes it possible to set the ON/OFF status of the control
and the desired setpoint, on an hourly basis, for the different days of the
week. If the above-mentioned operating parameters are set on a master
unit, they can be replicated on all the connected slaves.

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GM+C - Anodised aluminium double-row
finned air outlet grille, complete with subframe

Anodized aluminium air outlet grille with 2-row
swinging fins complete with galvanized sheet
steel subframe. It is usually combined with
recessed mounted fan coils.

S / SC

- Manual external air intake louver

The manual external air intake louver is designed
to allow frequent air renewals directly from the
fan coil. The quantity of renewal air is filtered
and heat treated by the fan coil and manually
adjusted by means of the flap located inside.
This louver can be used on all éstro GT models
except the floor mounted FU version. The
installation of a pair of covering feet (ZL for GTFL fan coils and ZA for GTFA
fan coils) is required, when the louver is mounted on fan coil units with
cabinet (GTFL, GTFA and GTFP ceiling mounted).

SM / SM-C - Motor-driven external air intake
louver

The motor driven external air intake louver is
designed to allow frequent air renewals directly
from the fan coil. The quantity of filtered and
heat treated external air is proportionally
controlled from 0 to 100% by means of a
servomotor located inside.
The SM - SM-C kit is complete with servomotor (protection rating IP54, 24
V supply voltage) and 230V - 24V transformer. The automatic closure and
opening of the louver can be obtained by means of external auxiliary contacts
(not supplied) as anti-freeze thermostats, timers, etc. by connecting in
parallel several servomotors to a single opening-closing control. The louver
should be coupled to one of the following control panels (optional): CSB ­CSB-C (installation on the unit) and CSD (wall recess mounted), permitting
to close and open the louver from 0 to 100%.
This louver can be used on all éstro GT models except the floor mounted
GTFU version. The installation of a pair of covering feet (ZL - ZC for GTFL,
GTCL fan coils and ZA for GTFA fan coils) is required, when the louver is
mounted on fan coil units with cabinet (GTFL, GTCL, GTFA and GTFP ceiling
mounted).

CSD - Recess mounted control for opening
and closing the SM motor-driven regulating
valve

Designed for wall recess mounting on the
opposite side of the fan coil control panel, it
controls the proportional opening and closing
of the motor-driven regulating louver SM - SM-C (from 0 to 100%).

DF - Additional heat exchanger for 4-pipe
systems (hot water circuit)

Additional heat exchanger made with copper
piping and aluminium fins: it is suitable for
4-pipe systems and is connected to the heating
circuit.
The heat exchanger comes complete with air
vent valves on the system connection openings.
The kit comes compete with locking bracket to avoid the manifold rotation
during plumbing connection opereations. The performances of the heat
exchanger mounted on the éstro GT fan coils are certified by Eurovent
which guarantees the reliability of the data shown on this manual.

9 ACCESSORIES

D - Support brackets for GTFC vertical
installation models

The D support brackets are supplied in pairs
and combined to the recess wall mounted éstro
fan coils GTFC in cases where the fan coil unit
cannot be anchored to the wall.
The height of the support brackets is 100 mm.

KBESTE KIT for on-board installation on ESTRO GT (1 air probe + bracket
+ on-board LCD controller frame + wiring kit)

- The LCD controller can be installed directly (on both sides) on ESTRO

GT units using the controller kit provided, which contains:

- Remote air temperature probe (cable length 1.5 m).

- LCD frame (to be added or replaced in case of flap).

- Support for installation on the indoor unit.

- Frame.

- Sensor holder trap and clamp.

PVA - Painted rear covering panel for GTFA
models

This panel is suitable for wall mounted GTFA
fan coils with apparent rear part. For instance:
installation against glass walls. The kit includes
an upper rear covering panel and a lower rear
covering panel. The fan coils using a PVA rear
covering panel cannot be wall mounted.

PVL / PVC - Painted rear covering panel for
GTFL, GTCL and GTFU models

This panel is suitable for wall mounted GTFL,
GTCL, GTFU fan coils with apparent rear part.
For instance: installation against glass walls.
The kit includes an upper rear covering panel
and a lower rear covering panel. The fan coils
using a PVL - PVC rear covering panel cannot
be wall mounted.

PH - Painted rear covering panel for horizontal
installation models GTFU

The painted rear panel PH is supplied exclusively
for ceiling mounted éstro GTFU fan coils with
apparent rear part in order to cover the technical
compartments (plumbing and electrical). It is
used to cover the technical compartments. The fan coils with rear panel
can work in heating mode only.

GE+C - Aluminium air intake grille with
subframe

The external air intake louver with anodised
aluminium fixed fins, complete with anodised
aluminium subframe is usually combined with
external air intake louvers and is designed for
wall mounting.

GEF+C - Aluminium air intake grille with
subframe and filter

The air intake louvers with anodised aluminium
fixed fins complete with washable acrylic fibre
filter and galvanised sheet subframe, is usually
combined with recess mounted fan coils.

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9 ACCESSORIES

VK - ON-OFF 3-way motor driven valve, with
hydraulic kit

The ON/OFF motor driven VK 3-way valve /
4 connections kit connected to the control
panel for éstro fan coils, controls the room
temperature by stopping the water flow through
the heat exchanger. VK kit is available in various
configurations for all models of éstro fan coils
with standard (VK S) or additional DF (VK DF)
heat exchanger, as shown in the table below:
The kit includes:
brass 3-way valve / 4 connections with built-in by-pass, maximum operating
pressure 16 bar.
Electrothermal actuator with the ON/OFF functions (total opening time 4
minutes), 230 V power supply;
Hydraulic kit for installing the valve on the heat exchanger, complete with 2
holders for balancing and regulating the fan coil unit.

BV - Auxiliary water drip tray for vertical
installation units

The auxiliary drip tray is used to collect the
condensate from the valve and the pressure
regulator. It can be used on all éstro fan coils.

BH - Auxiliary water drip tray for horizontal
installation units

The BH auxiliary drip tray is suitable for
horizontal installation fan coils to collect the
condensate from the ON/OFF 3-way valve (VK
S accessory).

RE - Electric heating element complete with
installation kit, safety devices and power
relay box

Designed to meet the needs of supplement
conventional water heating systems,the kit
includes armoured electric heating elements,
safety thermostats (with automatic/manual
resetting) and power relay set.
The additional heating element should be coupled to the MYCOMFORT
LARGE control panel.

KSC - Condensate drainage pump kit

It permits the drainage of condensate in case
of height differences. The pump is equipped
with a check valve on the drain pipe and is
capable to drain up to 8 l/h of water.

RA / RM - Inlet and outlet connectors

These accessories are designed for éstro GT
GTFC, GTFF fan coils and are used for room
ducts when the basic unit (éstro GT GTFC) is
placed within false ceilings and/or recess wall
mounted. For each configuration, the inlet
and outlet connectors are available in straight
version and in 90° jointed version.

GIVK - Valve insulation shell

The GIVK valve insulation shell avoids the
creation of condensate within the valve body.
The plumbing connections are provided either
on the right side or the left side.

MCSWE - Water temperature sensor for
microprocessor controls model MYCOMFORT

Directly connected to the microprocessor control
model MYCOMFORT to measure the water
temperature through the heat exchanger.
If the temperature detected is less than 17°C,
the unit will operate in the cooling mode and
the controller will use the summertime temperature scale (19 / 31°C); if
the temperature detected is greater than 37°C the unit will function in the
heating mode and the controller will use the wintertime temperature scale
(14 / 26°C). If the temperature detected by the probe is in the range of 17°C
to 37°C, the controller will inhibit operation of the fan coil unit.

MCSUE - Humidity sensor for on-board
microprocessor controls model MYCOMFORT
LARGE.

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ESTRO GT

Hmax (m)

F 1 2,00

F 3 - F 6 2,50

F 7 - F 8 2,70

F 9 - F 95 3,00

F 11 3,20

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10 INSTALLATION REQUIREMENTS

The fan coils should be installed in a position where the room can be cooled
or heated evenly, on walls or ceilings able to withstand their weight.
It is advisable to install any accessories on the standard unit prior to
positioning the latter.
For installation and use of accessories, please refer to the relative technical
sheets.
To guarantee the proper functioning of the unit and access for routine and
extraordinary maintenance purposes, it is necessary to comply with the
minimum installation clearance requirements (see "overall dimensions"
section).
In case of recess mounted units an access panel should be provided.

In order to avoid hot air stratification in rooms heated with ceiling mounted
fan coils, it is recommended:

- not to exceed the "H" installation heights referred to the maximum

operating speed as shown on the diagram;

- supply the units with moderately hot water (water inlet 50/60°C);

- provide the air intake from the lower part of the room, if possible.

11 MAINTENANCE

ESTRO GT type fan coils do not have particular maintenance requirements:
it is sufficient to periodically clean the air filter.
The motor requires no maintenance since it has self-lubricating bearings.
It is recommended to replace the air filter once a year, using an original
replacement filter; the fan coil unit model is specified on the identification
plate on the inside of the side panel.
Always consult the "Installation, use and maintenance manual" provided
with the unit when undertaking maintenance and cleaning.

Install any remote control panel in an easily accessible position allowing the
user to set the functions while ensuring an accurate reading of the ambient
temperature, if provided. You should avoid:

- positions directly exposed to sunlight;

- positions exposed to direct currents of warm or cold air;

- placing obstacles that impede an accurate temperature reading.
During wintertime periods of quiescence, drain water from the system, to
prevent ice from forming. If anti-freeze solutions are used, check for their
freezing point using the table below.

Glycol by

weight (%)

Freezing

temperature (°C)

Capacity

adjustment

Pressure drop

adjustment

0 0 1.00 1.00

10 -4 0.97 1.05

20 -10 0.92 1.10

30 -16 0.87 1.15

40 -24 0.82 1.20

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