Galletti FM 22 User manual

2.0 kW - 3,7 kW
FM
GB TECHNICAL MANUAL
HIGH WALL-MOUNTED FAN COIL UNITS
WITH BLDC MOTOR AND INCORPORATED VALVE

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FM
All copying, even partial, of this manual is strictly forbidden FC66003740 - Rev 01
TABLE OF CONTENTS
1 GENERALITIES..................................................................... 3
2 CONSTRUCTIVE FEATURES ................................................. 3
3 ACCESSORIES ..................................................................... 4
4 RATED TECHNICAL DATA..................................................... 5
5 PERFORMANCES................................................................. 6
5.1 Cooling .................................................................................6
5.2 Heating..................................................................................7
5.3 Valve information...................................................................8
5.4 Sound levels..........................................................................9
6 OVERALL DIMENSIONS ...................................................... 10
6.1 Mounting plate dimensions ..................................................10
7 WIRING DIAGRAMS............................................................ 11
8 MASTER/SLAVE NETWORKS.............................................. 11
9 WALLPAD ........................................................................... 13
10 INSTALLATION REqUIREMENTS......................................... 14
11 ROUTINE MAINTENANCE.................................................... 15
12 MODBUS ............................................................................ 16
The technical and dimensional data provided herein may undergo changes in connection
with product improvements.
OPERATING LIMITS
Minimum inlet water temperature = 5°C
Maximum Inlet water temperature = 70°C
Minimum air intake temperature = 5°C
Maximum air intake temperature = 35°C
Maximum wet bulb air intake temperature = 24°C
Supply voltage = 230 Vac
- For any further information, contact the manufacturer: [email protected]
- To get the weight of the unit, refer to the User Manual, Rated technical data table.

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FC66003740 - Rev 01
1 GENERALITIES
High wall-mounted FM fan coil units are available in 3 models with cooling
capacities ranging from 2.1 to 4.4 kW, complete with electronically controlled
inverter motor (BLDC, 2 or 3-way ON/OFF solenoid valve and infrared remote
control.
The performance features of FM fan coil units are certified by EUROVENT
which guarantees the reliability of the data shown on this documentation.
2 CONSTRUCTIVE FEATURES
CABINET
The ABS cabinet features attractive design, rounded shape, for every type
of environment.
The integrated air outlet is equipped with a motor driven flap that can sweep
automatically or be positioned manually, and adjustable fins for a uniform
distribution of air in the room.
The front panel is complete with display to show all the functions of the unit
and the room temperature.
HEAT EXCHANGER
Uprated heat exchanger made with copper piping and high efficiency alumi-
nium fins with hydrophilic surface treatment, complete with air vent valve
and facilitated emptying valve.
ON/OFF SOLENOID VALVE ASSEMBLY
All units are equipped with 2 or 3-way solenoid valve with electrothermal ON/
OFF actuator (230 V) directly installed on the heat exchanger inside the unit
and controlled by the microprocessor controller. Hoses for the connection
to the system facilitate the installation operations.
DECLARATION OF CONFORMITY
Galletti S.p.A. hereby declares, under its sole responsibility, that the
high wall-mounted fan coil units belonging to the FM series, have
been designed, built and tested in conformity with the specifications
of European Directives: 2006/42/CE, 2004/108/CE, 2006/95/CE
Bentivoglio, 08/01/2014
Galletti S.p.A.
Luca Galletti
FM high wall-mounted
1234567891011
S K A F M 0 3 2 T 0 0
Revision Name of series Size No. of valves Control
included Motor Other

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All copying, even partial, of this manual is strictly forbidden FC66003740 - Rev 01
2 CONSTRUCTIVE FEATURES
FAN-DRIVE ASSEMBLY
Tangential fan directly coupled to an electronically controlled electric motor
of synchronous brushless type (BLDC) controlled by inverter.
The great advantage of brushless motors is the significant reduction in power
consumption, which reaches up to a 2/3 of that of asynchronous motors with
the corresponding reduction in CO2 emissions. The DC Inverter technology
allows to continuously adjust the air flow and heating capacity to the actual
needs of the environment by considerably reducing the fluctuations in room
temperature that are typical of step-by-step adjustments.
The direct consequence is the reduction in the noise emission of the fan coil,
which is proportional to the demands of the environment.
CONTROL SYSTEM
The microprocessor control system with infrared user interface enables the
automatic control of the fan coil unit.
The main control specifications are:
- Selection of the cooling, heating, dehumidification mode or the automatic
mode.
- PID control algorithm to regulate the BLDC fan: the control logic adapts
the fan rpm to the difference between measured temperature and set
temperature, integrate over time the deviation measured and adapt the
rpm accordingly. The derivative logic analyzes the change speed thus
assuring little variations.
- Water temperaturereading and definition ofminimum working temperatures
- Auxiliary contacts for signalling of heating or cooling mode
- Inlet contact for remote on/off operation ( (for instance signalling of room
occupied)
- Serial port for the implementation of master/slave networks
- Autorestart after power cut.
REMOTE CONTROL
Infrared remote control with LCD display, to set all the functions of the fan coil:
- Switching on and off
- Temperature Set point
- Operatingmode(cooling-dehumidification-ventilation-heating-automatic)
- Ventilation (automatic-maximum-medium-minimum)
- Switching on and off via Timer
- Air outlet flap sweep
- Clock
When, in a maser/slave system, the fan coil with remote control is the master
unit, the settings are automatically sent to the slave units.
The flap sweep function is not applicable.
AIR FILTER
The filter is washable and can be easily removed for cleaning operations, by
lifting the front panel of the cabinet.
3 ACCESSORIES
available as an option is a wired wallpad with a large display, which can be
used to control and set all the functions of each individual fan coil unit in
master/slave systems.
WALLPAD supplied with cable for the connection to the fan coil unit.
Temperature pattern with 3-speed motor and brushless motor
3-speed
motor
Noise pattern with 3-speed motor and brushless motor
3-speed
motor

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All copying, even partial, of this manual is strictly forbidden
FC66003740 - Rev 01
4 RATED TECHNICAL DATA
1Water temperature 7-12°C, air temperature D.B. 27°C, W.B. 19°C (47% relative humidity)
2Water temperature 50°C, water flow rate same as in cooling mode, air inlet temperature 20°C
3Sound power measured according to standards ISO3741 and ISO3744
4Sound pressure level measured at a distance of 1 m with a directivity factor of 4
RATED TECHNICAL DATA OF FM FAN COIL UNITS
Model 22 / 23 32 / 33 42 / 43
Supply voltage V - ph - Hz 230-1-50 / 220-1-60
Speeds 123123123
Total cooling capacity (1) kW 1,37 1,64 2,07 1,94 2,40 3,02 2,68 3,28 3,74
Sensible cooling capacity (1) kW 0,99 1,20 1,52 1,40 1,47 2,22 1,95 2,40 2,74
Water flow rate (1) l/h 234 281 356 335 414 518 457 565 641
Pressure drop (1) kPa 11 15 22 18 26 38 25 36 45
FCEER - nominal value 168 187 183
FCEER - Class B A B
Heating capacity (2) kW 1,75 2,12 2,70 2,48 2,61 3,93 3,45 4,20 4,87
Pressure drop (2) kPa 9 12 18 15 22 32 20 29 36
FCCOP - nominal value 216 230 238
FCCOP - Class B
Air flow rate m3/h 290 370 500 370 445 645 570 740 876
Power input W 8 10 13 10 13 20 13 20 30
Sound power level (3) dB/A 35 40 48 38 43 53 45 52 57
Sound pressure level (4) dB/A 27 32 40 30 35 45 37 44 49
Water content dm3 0,43 0,86
Water connections (female gas) inches 1/2
Condensate drainage connection inches (mm) 5/8 (16)
Dimensions H x L x P mm 876/228/300
Net weight kg 12,00 13,00 14,00

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Tbs1/ Tbu1(UR1) 25°C (51%)
Tw1/ Tw26°C / 11°C 7°C / 12°C
Vr PFT PFS qw Dpw PFT PFS qw Dpw
W W l/h kPa W W l/h kPa
FM 22 / FM 23
1 1290 910 223 10 1010 810 173 6
2 1560 1110 266 14 1270 1000 220 10
3 1980 1410 338 21 1650 1290 284 15
FM 32 / FM 33
1 1830 1290 313 16 1390 1120 238 10
2 2290 1370 392 24 1850 1200 317 16
3 2890 2060 497 36 2390 1870 410 26
FM 42 / FM 43
1 2570 1820 439 24 2190 1670 374 18
2 3160 2240 544 34 2720 2070 464 26
3 3600 2550 619 43 3110 2360 533 33
Tbs1/ Tbu1(UR1) 25°C (51%)
Tw1/ Tw28°C / 13°C 9°C / 14°C
Vr PFT PFS qw Dpw PFT PFS qw Dpw
W W l/h kPa W W l/h kPa
FM 22 / FM 23
1 820 740 140 4 810 810 140 4
2 1040 1040 180 7 940 940 162 6
3 1260 1140 216 9 1200 1200 205 9
FM 32 / FM 33
1 1190 1050 205 8 1180 1180 202 7
2 1310 1000 223 9 1080 920 187 6
3 1760 1640 302 15 1760 1760 302 15
FM 42 / FM 43
1 1750 1510 302 12 1500 1500 259 9
2 2230 1890 382 18 1860 1860 320 13
3 2570 2170 439 23 2130 2130 367 17
Tbs1/ Tbu1(UR1) 27°C (47%)
Tw1/ Tw26°C / 11°C 7°C / 12°C
Vr PFT PFS qw Dpw PFT PFS qw Dpw
W W l/h kPa W W l/h kPa
FM 22 / FM 23
1 1590 1080 274 14 1370 990 234 11
2 1890 1300 324 19 1640 1200 281 15
3 2370 1630 407 29 2070 1520 356 22
FM 32 / FM 33
1 2270 1530 389 24 1940 1400 335 18
2 2770 1620 475 33 2400 1470 414 26
3 3470 2400 594 49 3020 2220 518 38
FM 42 / FM 43
1 3030 2090 518 32 2680 1950 457 25
2 3700 2560 634 45 3280 2400 565 36
3 4210 2910 724 56 3740 2740 640 45
Tbs1/ Tbu1(UR1) 27°C (47%)
Tw1/ Tw28°C / 13°C 9°C / 14°C
Vr PFT PFS qw Dpw PFT PFS qw Dpw
W W l/h kPa W W l/h kPa
FM 22 / FM 23
1 1100 890 187 7 970 970 166 6
2 1350 1100 234 11 1160 1160 198 8
3 1740 1400 299 16 1350 1260 230 11
FM 32 / FM 33
1 1520 1240 263 12 1210 1130 209 8
2 1970 1310 338 18 1320 1080 227 9
3 2520 2040 432 28 2140 2140 367 21
FM 42 / FM 43
1 2290 1810 392 19 1860 1660 320 13
2 2830 2240 486 28 2330 2060 400 20
3 3240 2560 554 35 2690 2360 461 25
All copying, even partial, of this manual is strictly forbidden FC66003740 - Rev 01
5 PERFORMANCES
5.1 COOLING
Tbs1Air inlet temperature (dry bulb)
Tbu1Air inlet temperature (wet bulb)
Ur Relative humidity
Tw1Water inlet temperature
Tw2Water outlet temperature
PFT Total cooling capacity
PFS Sensible cooling capacity
qw Water flow rate
∆pw2-∆pw3
Pressure drop water side, unit without valve
Vr Fan speed

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Tbs120°C
Tw1/ Tw245 / 40°C 50°C / 40°C
Vr PH qw Dpw PH qw Dpw
W l/h kPa W l/h kPa
FM 22 / FM 23
1 1470 256 10 1530 133 3
2 1790 310 14 1870 162 5
3 2280 396 22 2400 209 7
FM 32 / FM 33
1 2080 364 18 2170 187 6
2 2130 371 18 2200 191 6
3 3320 576 40 3490 302 13
FM 42 / FM 43
1 2900 504 24 3100 270 8
2 3530 612 34 3770 328 11
3 4110 713 45 4410 385 15
Tbs120°C
Tw1/ Tw260°C / 50°C 70°C / 60°C
Vr PH qw Dpw PH qw Dpw
W l/h kPa W l/h kPa
FM 22 / FM 23
1 2290 202 6 3000 263 10
2 2780 245 9 3640 320 14
3 3550 310 13 4640 407 21
FM 32 / FM 33
1 3240 284 11 4260 374 17
2 3310 288 11 4360 382 18
3 5160 450 24 6740 590 38
FM 42 / FM 43
1 4520 396 15 5880 515 23
2 5490 479 21 7140 626 33
3 6390 558 28 8330 731 42
Tbs122°C
Tw1/ Tw245 / 40°C 50°C / 40°C
Vr PH qw Dpw PH qw Dpw
W l/h kPa W l/h kPa
FM 22 / FM 23
1 1330 230 8 1380 119 3
2 1620 281 12 1690 148 4
3 2070 360 18 2170 187 6
FM 32 / FM 33
1 1880 328 15 1950 169 5
2 1920 335 15 1970 173 5
3 3000 522 33 3150 274 11
FM 42 / FM 43
1 2630 457 20 2810 245 7
2 3200 554 29 3420 299 10
3 3720 648 38 4000 349 13
Tbs122°C
Tw1/ Tw260°C / 50°C 70°C / 60°C
Vr PH qw Dpw PH qw Dpw
W l/h kPa W l/h kPa
FM 22 / FM 23
1 2140 187 6 2860 252 9
2 2600 227 8 3460 302 13
3 3330 292 12 4420 389 19
FM 32 / FM 33
1 3040 266 10 4060 356 16
2 3090 270 10 4150 364 16
3 4840 421 22 6410 562 35
FM 42 / FM 43
1 4240 371 13 5600 490 21
2 5150 450 19 6800 598 30
3 6000 526 25 7930 695 39
All copying, even partial, of this manual is strictly forbidden
FC66003740 - Rev 01
5 PERFORMANCES
5.2 HEATING
Tbs1Air inlet temperature (dry bulb)
Tw1Water inlet temperature
Tw2Water outlet temperature
PT Heating capacity
qw Water flow rate
∆pw2-∆pw3 Pressure drop water side, unit without valve
Vr Fan speed

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M30x1.5
Ø28
A
C
DNDN
B
D
All copying, even partial, of this manual is strictly forbidden FC66003740 - Rev 01
2 Way Valve Body
3 Way / 4 Outlet
Differential pressure Chart
Differential pressure Chart
Valve Dimensions (mm)
DN A B C D
D15
(G1/2”)
52 47 19.5 63
Valve Dimensions (mm)
Valve Model DN A B C D
DFPS-HWS-007b D15
(G1/2”)
52 70 35 86
5 PERFORMANCES
3.5 VALVE INFORMATION

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Lw
FM Vr
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz LwA LpA
dB dB dB dB dB dB dB dB/A dB/A
FM 22 / FM 23
1 43,8 46,1 45,2 42,3 33,9 23,1 17,0 46 38
2 36,9 38,9 37,5 32,4 23,6 16,4 17,4 38 30
3 36,3 36,7 34,0 28,4 21,7 17,3 19,2 35 27
FM 32 / FM 33
1 51,2 52,9 50,5 48,4 41,3 32,0 21,5 52 44
2 41,6 44,0 42,5 37,5 28,7 20,4 19,1 43 35
3 37,7 39,2 37,9 32,9 24,3 17,8 17,5 38 30
FM 42 / FM 43
1 54,8 55,8 53,7 54,3 47,5 38,1 26,8 57 49
2 48,6 50,0 49,4 48,1 40,5 30,3 20,3 51 43
3 43,0 44,4 44,1 41,3 32,5 21,8 18,6 45 37
All copying, even partial, of this manual is strictly forbidden
FC66003740 - Rev 01
6 OVERALL DIMENSIONS
5 PERFORMANCES
5.4 SOUND LEVELS
LpA Total sound pressure level, weighted A, measured at a distance of
1 m, with a directivity factor of 2.
Lw Sound power level by octave band, not weighted
LwA Total sound power level, weighted A
Vr Fan speed
Model Unit dimensions (mm)
A B C D E F G H
FM 22 / 23 / 32 /
33 / 42 / 43 40 105 875 55 105 R20 60 74
Unit dimensions (mm)
1234
665 170 710 125
Unit dimensions (mm)
a b c d e f g h
200 55 30 30 220 229 10 300

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6 OVERALL DIMENSIONS
6.1 MOUNTING PLATE DIMENSIONS
Hot water 4-pipe convector sensor
Hot/chilled water 2-pipe convector sensor
Return air sensor
ON/OFF electric
control board
(20/24).
Connection to stepper motor of air outlet flap
Connect
LED Display/IR receiverWall-mounted cable control
Yellow/green
Auxiliary heating contact
Auxiliary cooling contact
7 WIRING DIAGRAMS
Make the electrical connections with the power supply disconnected, in accordance with current safety regulations.
Check that the mains electricity supply is compatible with the voltage shown on the unit rating plate.
Each fan coil requires an individual electric socket and a switch with a suitable safety fuse.
--------- Factory wiring
- - - - - Field wiring
Each fan coil requires an omnipolar main switch classified as overvoltage category III to be mounted on the power supply line.