CASSETTE FAN COIL COOLING/HEATING TERMINAL UNIT COOLING CAPACITY: 2,5 kW - 10,5 kW HEATING CAPACITY: 5,7 kW - 17,2 KW Features Stylish. Compact and lightweight. Ideal for standardized false ceilings. Low noise. Variable air flow distribution patterns. Infrared remote control. (standard) or wired controller availability. Master-Slave control capability. RS-485 Port, for BMS communication. Built-in condensate pump. Easy access to all the components for maintenance Standard filter for clean air. Fresh air and branch ducting capability. Self diagnosis. Interklima Hydronic Cassette Fan Coils are the ideal solution for cooling/heating applications. They are available in eight models with nominal capacities ranging from 2,5kW to 10,5 kW in cooling and 5,7kW up to 17,2kW in heating. This series is ideal in combination with Interklima air cooled water chillers or heat pumps for air conditioning offices, shops or any other commercial application, where floor and wall space is needed for fittings and furniture, by being installed flush into every ceilling with various air flow pattern flexibility according to the room shape and layout. PCE 03-04-06-08-09-10-12-16
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Infrared remote control. (standard) or wired controller availability.
Master-Slave control capability.
RS-485 Port, for BMS communication.
Built-in condensate pump.
Easy access to all the components for maintenance
Standard filter for clean air.
Fresh air and branch ducting capability.
Self diagnosis.
Interklima Hydronic Cassette Fan Coils are theideal solution for cooling/heating applications.They are available in eight models withnominal capacities ranging from 2,5kW to10,5 kW in cooling and 5,7kW up to 17,2kWin heating.
This series is ideal in combination withInterklima air cooled water chillers or heatpumps for air conditioning offices, shops orany other commercial application, where floorand wall space is needed for fittings andfurniture, by being installed flush into everyceilling with various air flow pattern flexibilityaccording to the room shape and layout.
PCE 03-04-06-08-09-10-12-16
NOMENCLATURE
1 Interklima Hydronic cassette
2 Model numbers03=2kW04=3kW06=4kW08=6kW09=6,5kW10=7,5kW12=9kW16=10,5kW
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
CoolingPCE-03
Qw1/h
540
644
755
417
491
587
323
378
446
253
287
327
208
232
259
Pf kW
2.48
2.94
3.48
1.95
2.29
2.71
1.45
1.70
2.00
1.05
1.19
1.38
0.87
0.95
1.05
Pfs kW
1.82
2.11
2.35
1.60
1.83
2.09
1.40
1.61
1.83
1.03
1.17
1.34
0.85
0.93
1.02
Tad
10.1
10.6
11.6
11.9
12.4
13.0
13.5
13.9
14.5
16.4
16.9
17.2
18.0
18.5
19.1
Taw
10.1
10.2
10.3
11.9
12.0
12.1
13.5
13.6
13.7
14.7
14.9
15.0
15.3
15.5
15.7
Pf kW
2.75
3.29
3.89
2.17
2.56
3.06
1.67
1.96
2.32
1.27
1.45
1.69
1.07
1.20
1.34
Pfs kW
1.98
2.31
2.60
1.74
2.00
2.29
1.54
1.79
2.05
1.24
1.41
1.64
1.04
1.17
1.31
Tad
10.7
11.3
12.2
12.6
13.1
13.9
14.2
14.6
15.2
16.6
17.2
17.5
18.3
18.8
19.4
Taw
10.7
10.8
10.9
12.6
12.7
12.8
14.2
14.3
14.4
15.4
15.6
15.7
16.0
16.2
16.4
Pf kW
2.86
3.41
4.00
2.21
2.60
3.11
1.71
2.00
2.36
1.34
1.52
1.73
1.10
1.23
1.37
Pfs kW
1.94
2.19
2.50
1.67
1.92
2.17
1.48
1.73
1.96
1.30
1.48
1.68
1.07
1.19
1.34
Tad
11.0
12.0
12.7
13.1
13.6
14.5
14.7
15.0
15.7
16.2
16.7
17.3
18.1
18.7
19.2
Taw
11.0
11.1
11.3
13.1
13.2
13.3
14.7
14.8
14.9
15.8
16.0
16.2
16.5
16.7
16.9
Pf kW
3.26
3.91
4.59
2.62
3.10
3.68
2.00
2.37
2.80
1.59
1.82
2.08
1.30
1.47
1.65
Pfs kW
2.09
2.41
2.71
1.84
2.10
2.38
1.60
1.87
2.11
1.45
1.63
1.86
1.24
1.40
1.57
Tad
11.7
12.5
13.5
13.8
14.5
15.3
15.6
16.0
16.8
16.9
17.6
18.2
18.6
19.2
19.8
Taw
11.7
11.8
12.0
13.8
13.9
14.0
15.6
15.7
15.8
16.8
17.0
17.2
17.6
17.8
18.0
DpwkPa
8.76
12.0
16.0
5.51
7.38
10.2
3.47
4.60
6.20
2.24
2.81
3.54
1.57
1.92
2.33
Qa[m3/h]
352
425
510
351
420
510
354
423
510
356
427
514
358
429
514
PCE-04
Twi
5
7
9
11
13
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-04
NOTESTAI: Air in temperature Pf: Total cooling capacityTWI: Fluid in temperature Pfs: Sensible cooling capacityQw: Fluid flow rate in heat exchanger tad: Discharge air dry bulb temperatureDpw: Pressure drop standard coil Taw: Discharge air wet bulb temperatureQa: Air flow
Design and specification are subject to change without prior notice for product improvement
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-08
Qw1/h
1100
1300
1550
906
1070
1265
695
827
972
493
585
672
429
506
576
Pf kW
5.13
6.16
7.41
4.12
4.92
5.80
3.02
3.68
4.37
2.07
2.45
2.86
1.75
2.05
2.38
Pfs kW
3.69
4.37
4.95
3.26
3.83
4.39
2.80
3.32
3.85
2.02
2.38
2.76
1.71
2.00
2.31
Tad
9.6
10.0
11.0
11.4
11.8
12.5
13.2
13.5
14.0
16.4
16.7
17.0
17.7
18.0
18.3
Taw
9.6
9.7
9.8
11.4
11.5
11.7
13.2
13.2
13.3
14.7
14.8
14.9
15.2
15.3
15.4
Pf kW
5.71
6.85
8.15
4.65
5.56
6.60
3.53
4.21
5.03
2.56
3.04
3.56
2.16
2.55
2.98
Pfs kW
4.03
4.77
5.47
3.58
4.15
4.81
3.12
3.73
4.26
2.52
2.98
3.48
2.11
2.54
2.92
Tad
10.2
10.6
11.5
12.0
12.6
13.3
13.8
14.0
14.8
16.3
16.6
16.9
18.0
18.1
18.5
Taw
10.2
10.3
10.5
12.0
12.1
12.3
13.8
13.9
14.0
15.3
15.4
15.5
15.9
16.0
16.1
Pf kW
5.80
6.90
8.20
4.80
5.67
6.70
3.68
4.38
5.15
2.61
3.10
3.56
2.27
2.68
3.05
Pfs kW
3.90
4.58
5.27
3.48
4.04
4.70
3.04
3.59
4.10
2.54
3.03
3.57
2.22
2.53
2.97
Tad
10.7
11.2
12.0
12.4
13.0
13.6
14.2
14.5
15.3
16.2
16.4
16.7
17.5
18.1
18.4
Taw
10.7
10.9
11.1
12.4
12.6
12.8
14.2
14.3
14.5
15.8
15.9
16.1
16.3
16.4
16.6
Pf kW
6.85
8.16
9.71
5.63
6.70
8.00
4.40
5.28
6.30
3.10
3.78
4.37
2.47
2.90
3.42
Pfs kW
4.31
5.01
5.68
3.80
4.47
5.05
3.32
3.96
4.51
2.85
3.45
3.89
2.38
2.82
3.30
Tad
11.0
11.7
12.8
13.0
13.5
14.5
14.9
15.2
16.0
16.8
16.9
17.7
18.8
19.0
19.4
Taw
11.0
11.2
11.4
13.0
13.2
13.3
14.9
15.0
15.1
16.8
16.8
17.0
17.7
17.8
17.9
DpwkPa
17.3
23.7
32.3
12.3
16.6
22.5
7.64
10.5
14.0
4.1
5.6
7.2
3.2
4.3
5.45
Qa[m3/h]
691
840
1022
694
841
1022
695
843
1029
694
846
1028
695
846
1027
PCE-09
Twi
5
7
9
11
13
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-09
NOTESTAI: Air in temperature Pf: Total cooling capacityTWI: Fluid in temperature Pfs: Sensible cooling capacityQw: Fluid flow rate in heat exchanger tad: Discharge air dry bulb temperatureDpw: Pressure drop standard coil Taw: Discharge air wet bulb temperatureQa: Air flow
Design and specification are subject to change without prior notice for product improvement
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-10
Qw1/h
1365
1610
1912
1089
1280
1510
814
952
1108
593
685
784
487
561
631
Pf kW
6.29
7.41
8.90
4.96
5.82
6.84
3.56
4.15
4.91
2.52
2.90
3.27
1.90
2.16
2.38
Pfs kW
4.47
5.05
5.72
3.93
4.42
5.04
3.47
3.91
4.41
2.46
2.81
3.19
1.84
2.16
2.32
Tad
11.1
11.8
12.7
12.7
13.4
14.1
14.1
14.7
15.4
17.2
17.5
18.0
19.1
19.3
19.9
Taw
10.4
10.5
10.6
12.1
12.2
12.4
13.8
13.9
14.0
15.0
15.1
15.3
15.7
15.8
16.0
Pf kW
7.03
8.30
9.95
5.60
6.55
7.73
4.15
4.83
5.62
3.08
3.56
4.08
2.53
2.91
3.27
Pfs kW
4.84
5.51
6.25
4.31
4.93
5.52
3.87
4.33
4.9
3.02
3.48
3.92
2.47
2.83
3.21
Tad
11.9
12.6
13.5
13.5
14.0
15.0
14.8
15.5
16.3
17.4
17.7
18.4
19.1
19.4
19.9
Taw
11.0
11.1
11.2
12.8
12.9
13.1
14.5
14.6
14.8
15.7
15.8
16.0
16.3
16.4
16.6
Pf kW
7.23
8.53
10.13
5.77
6.78
8.00
4.31
5.04
5.87
3.14
3.63
4.15
2.58
2.97
3.34
Pfs kW
4.70
5.33
6.05
4.20
4.73
5.38
3.70
4.19
4.76
3.05
3.56
4.05
2.50
2.91
3.26
Tad
12.3
13.0
13.9
13.8
14.5
15.3
15.3
15.9
16.6
17.3
17.5
18.1
19.0
19.2
19.8
Taw
11.4
11.5
11.7
13.2
13.3
13.5
14.9
15.0
15.2
16.2
16.3
16.5
16.8
16.9
17.1
Pf kW
8.30
9.78
11.65
6.70
7.90
9.45
5.11
5.98
7.00
3.70
4.30
4.95
3.12
3.60
4.10
Pfs kW
5.04
5.77
6.54
4.53
5.14
5.86
4.01
4.51
5.15
3.51
3.96
4.54
2.90
3.23
3.70
Tad
13.2
13.8
14.8
14.7
15.4
16.2
16.3
17.0
17.7
17.8
18.4
19.0
19.7
20.3
20.8
Taw
12.1
12.2
12.4
14.0
14.1
14.2
15.8
15.9
16.1
17.3
17.4
17.6
17.9
18.0
18.2
DpwkPa
10.30
13.90
18.90
6.90
9.20
12.40
4.10
5.40
7.10
2.30
2.99
3.80
1.60
2.10
2.60
Qa[m3/h]
930
1111
1352
931
1111
1353
932
1112
1354
933
1112
1354
932
1113
1354
PCE-12
Twi
5
7
9
11
13
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-12
NOTESTAI: Air in temperature Pf: Total cooling capacityTWI: Fluid in temperature Pfs: Sensible cooling capacityQw: Fluid flow rate in heat exchanger tad: Discharge air dry bulb temperatureDpw: Pressure drop standard coil Taw: Discharge air wet bulb temperatureQa: Air flow
Design and specification are subject to change without prior notice for product improvement
TAI DB25-WB17.8 TAI DB27-WB19 TAI DB27-WB19.5 TAI DB29-WB21.1
PCE-16
NOTESTAI: Air in temperature Pf: Total cooling capacityTWI: Fluid in temperature Pfs: Sensible cooling capacityQw: Fluid flow rate in heat exchanger tad: Discharge air dry bulb temperatureDpw: Pressure drop standard coil Taw: Discharge air wet bulb temperatureQa: Air flow
Design and specification are subject to change without prior notice for product improvement
Qw 1/h
105
122
133
183
211
236
267
314
346
351
413
449
Pf kW
1.46
1.72
1.87
2.51
2.96
3.26
3.58
4.24
4.66
4.65
5.51
6.00
Tad
32.0
31.4
30.6
42.0
41.0
40.0
52.1
51.0
49.5
62.3
61.0
58.5
Pf kW
1.35
1.56
1.71
2.35
2.71
3.03
3.42
4.03
4.44
4.50
5.31
5.76
Tad
32.9
32.2
31.5
42.5
41.2
40.4
52.6
51.5
50.0
62.7
61.6
58.8
Pf kW
1.20
1.40
1.53
2.23
2.58
2.85
3.28
3.81
4.26
4.31
5.10
5.59
Tad
33.5
33.0
32.3
43.3
42.2
41.2
53.4
51.7
50.8
63.4
61.5
59.7
Pf kW
1.06
1.24
1.37
2.07
2.40
2.67
3.11
3.64
4.05
4.15
4.88
5.35
Tad
34.2
33.7
33.2
43.8
42.7
42.0
53.9
52.3
51.3
63.9
62.0
60.2
DpwkPa
0.410
0.530
0.627
1.110
1.440
1.760
2.180
2.930
3.500
3.580
4.800
5.580
Qa[m3/h]
323
395
459
323
395
459
324
395
458
326
394
458
PCE-03
Twi
40
50
60
70
TAI 18 TAI 20 TAI 22 TAI 24
HeatingPCE-03
NOTESTAI: Air in temperature Pf: Total cooling capacityTWI: Fluid in temperature tad: Discharge air dry bulb temperatureQw: Fluid flow rate in heat exchangerDpw: Pressure drop standard coilQa: Air flow
Design and specification are subject to change without prior notice for product improvement
NOTESTAI: Air in temperature Qw: Fluid flow rate in heat exchanger Qa: Air flow Pf: Total cooling capacityTWI: Fluid in temperature Dpw: Pressure drop standard coil tad: Discharge air dry bulb temperature
Design and specification are subject to change without prior notice for product improvement
NOTESTAI: Air in temperature Qw: Fluid flow rate in heat exchanger Qa: Air flow Pf: Total cooling capacityTWI: Fluid in temperature Dpw: Pressure drop standard coil tad: Discharge air dry bulb temperature
Design and specification are subject to change without prior notice for product improvement
NOTESTAI: Air in temperature Qw: Fluid flow rate in heat exchanger Qa: Air flow Pf: Total cooling capacityTWI: Fluid in temperature Dpw: Pressure drop standard coil tad: Discharge air dry bulb temperature
Design and specification are subject to change without prior notice for product improvement
Control and power supply wiring diagram PCE-09/10/12/16
NOTESWirring diagrams on unit take precidents.
Master - Slave control wiring diagram
Factory supplied accessoriesCheck to ensure all factory supplied accessories are supplied withthe unit.
The appliance should be installed in accordance withnational wiring regulation.
Safety considerationsñ When working on air conditioning equipment, observe
precautions in this manual, and on plates and tables attachedto the unit. Follow all safety codes and other safetyprecautions that may apply.
ñ Installing and servicing air conditioning equipment should bedone by trained and qualified service personnel only.Untrained personnel can perform only basic maintenancefunctions such as cleaning coils, filters and replacing filters.
ñ Ensure that the electrical supply and frequency are adequatefor the operating current required for this specific installation.
WarningBefore any service or maintenance operations turn off the mainpower switch.ñ The manufacturer denies any responsibility and warranty shall
be void if these installation instructions are not observed. ñ Never switch off the power main supply when unit is operating
in the cooling cycle.To switch off the fan coil unit use only the ON-OFF button.
ñ This avoids over-flow in the drain pan, by allowing the pumpto drain any condensate water due to regulating valve losseswhen chiller is working.
Operation limitsñ Power supply
ñ Water circuit- Minimum entering water temperature: +2ÆC- Maximum entering water temperature: +80ÆC- Water side maximum pressure: 1400 kPa (142 m.w.c)
Before installationThe installation site must be established by the system designeror other qualified professional, taking account of the technicalrequisites and current standards and legislation.PCE fan coils must be installed by an authorized company only.PCE fan coils are designed for installation in a false ceiling, forintake of fresh air from outside and for deviation of a small part ofthe treated air for discharge in a neighboring room.They must be installed in such a way as to enable treated air tocirculate throughout the room and in respect of the minimumdistances required for technical maintenance operations.
ñ It is advisable to place the unit close to the installation sitewithout removing it from the packaging.Do not put heavy tools or weights on the packaging.
ñ Upon receipt, the unit and the packaging must be checked fordamage sustained in transit and if necessary, a damage claimmust be filed with the shipping company.
ñ Check immediately for installation accessories inside thepackaging.
ñ Do not lift unit by the condensate drain discharge pipe or bythe water connections; lift it by the four corners.(Fig.1)
Selection locationñ Do not install the unit in rooms where flammable gas or
alkaline acid substances are present.Aluminum/copper coils and/or internal plastic componentscan be damaged irreparably.
ñ Do not install in workshops or kitchens; oil vapors drawn in bytreated air might deposit on the coils and alter theirperformance or damage the internal plastic parts of the unit.
ñ Installation of the unit will be facilitated by using a stacker andinserting a plywood sheet between the unit and the elevatedstacker.(Fig.2)
ñ It is recommended to position the unit as centrally as possiblein the room to ensure optimum air distribution. (Fig.3)Generally the best louver position is the one which allows airdiffusion along the ceiling. Alternatively intermediate positions can be selected.
ñ Check that it is possible to remove panels from ceiling in theselected position, to allow enough clearance for maintenanceand servicing operations.
Installation locationInstall the unit in a position:ñ Having sufficient strength to carry the weight of the unit.ñ Where the inlet and outlet grilles are not obstructed and the
conditioned air is able to blow all over the room.ñ From where condensate can be easily run to drain.ñ Check the distance between the upper slab and false ceiling to
ensure the unit will suit the distance. See Fig.4
ñ Ensure there is sufficient space around the unit to service it.See Fig.5
Cassette Unitñ Using the installation template open ceiling panels and install
the suspension bolts as in Fig.6 below
590 x 590: Dimensions for opening616 x 280: Suspension BoltsMODELS PCE-03/04/06/08
590 x 1120: Dimensions for opening517.5 x 1047.5: Suspension BoltsMODELS PCE-09/10/12/16
Opening Dimensions and Positions for Suspension Bolts
ñ Mark position of suspension rods, water lines andcondensate drain pipe, power supply cables and remotecontrol cable.Supporting rods can be fixed, depending on the type ofceiling, as shown in Fig. 7 and Fig.8.
ñ Fit suspension brackets supplied with the unit to the threadedrods (Fig.9).Do not tighten nuts and counter nuts; this operation has tobe done only after final leveling of the unit, when all theconnections have been completed.
Fig. 6
Fig. 7
Fig.9
Fig. 8
ñ Ensure the ceiling is horizontally level, otherwise condensatewater cannot drain.
ñ The casing is fixed to the slab with 4 drop rods. The rodsshould have two nuts and washers to lock the unit in position.The Cassette brackets will then hook over the washers.
ñ When lifting the Cassette into position care should be takennot to lift the unit by the drip tray, which could be damaged.
ñ Lift unit (without the air panel) with care by its four cornersonly. Do not lift unit by the condensate drain discharge pipeor by the piping connections.
ñ Incline unit (Fig.10, Fig.11, Fig.13, Fig.14) and insert it into
the false ceiling. Insert the rods into the bracket slot.With minimum height (see table) false ceilings, it might benecessary to remove some T brackets of the false ceilingtemporarily.
ñ Using a level guide, line up the unit with a spirit level, andkeep dimension between the body and the lower part of thefalse ceiling (Fig.12 Fig.15).
ñ Line up the unit to the supporting bars of the false ceilingtightening the nuts and counter nuts of the threaded rods.
ñ After connection of the condensate drain piping and pipingconnections, check again that the unit is level.
ñ The spaces between the unit and ceiling can now be adjusted.Use the drop rods to make the adjustment.
ñ Check to ensure the unit is level. The drain will thenautomatically be lower than the rest of the drip tray.
ñ Tighten the nuts on the suspended rods.
Drain pipe workIndoor Unitñ The unit is fitted with a condensate pump with a 500 mm. lift.ñ The unit is provided with 22 mm. bore flexible hose 300 mm.
long.ñ The flexible hose should be fitted into a 22 mm O/S º.
polyvinyl tube and sealed. The drain must be installed with adownward slope.
ñ On completion the drain line should be insulated
Water connectionsñ Water connections are fixed to the unit body to avoid breaks
when pipes are connected to valve assemblies; it is advisableto tighten the connection with a spanner.
ñ The upper coil connection is supplied with air purge screw, thelower connection with water purge screw, suitable for 8mm.wrench or screw-driver.
ñ Coil is partially drainable; it is advisable to blow air into the coilfor complete drainage.
Pipe connection kit (Option)
Pipe connection dimensional drawingsPCE-03/04-VS
PCE-06/08-VS
PCE-09/10/12/16-VS
Fig.16
Extended drain pan accessory
Installation proceduresñ Align the two (2) screw holes in the fixing plate to the two
(2) holes in the external drain pan.ñ Make sure the drain pan is horizontal.ñ Tighten the two screws and making sure the external drain
pan is installed flush with the fixing plate.
When the installation is completed, it is necessary to wrapconnecting pipe with insulation to prevent leakage to ceiling tile.
Electrical wiringñ Remove cover A and install the connection wires.ñ After wiring is complete install cover A.
Interconnecting wiringWe recommend that screened cable be used in electrically noisy areas.1. Always separate low voltage (5VDC) signal wires from power
line (230 VAC) to avoid electro-magnetic disturbance of controlsystem.
2. Do not install the unit where electromagnetic waves are directlyradiated at the infra red receiver on the unit.
3. Install the unit and components as far away as is practical (atleast 5 meters) from the electromagnetic wave source.
4. Where electromagnetic waves exist use shielded sensor cable.5. Install a noise filter if any harmful noise exists in the power
Mounting front Panel assembly ñ Remove return grille from front panel.ñ Move the front panel to casing.ñ Tighten 4 screws as shown in Fig 17,18
Preliminary checks before start-upñ The unit should not be started up until the system piping has
been cleaned and all the air has been purged.ñ Check condensate drain pipe slope.ñ Make sure that air filter is clean and properly installed.ñ Ensure that voltage and current values correspond with the
unit nameplate values; check electrical connections.ñ Verify that air outlets are not closed.
Fresh air renewal and branch ducting.ñ The side opening allows separate ductwork to be installed for
outside air intake and branch ducting. See Fig.26ñ Cut and remove anti-condensate insulating material.ñ Install your flanges and conduits to casing. Conduit can be
flexible polyester with spring core or corrugated aluminiumexternally coated (dia.4 in.) with anti-condensate material(fiberglass 12-25 mm thickness).
Fresh air - There is one (1) opening for connecting a fresh air duct for PCE-03-04-06-08,There are two (2) openings for connecting fresh air ducts for PCE-09-10-12-16.
Branch air- PCE-03-04-06-08 : Two(2) openings each.PCE-09-10-12-16 : Four (4) openings each.Order flanges (spigots) and blanking plates as accessories separately.
1. Look for the yellow sticker on the casing for location ofbranch duct or fresh air intake connections.
2. The sticker is at the center of a knock out hole underneaththe casing insulation. Use a cutter and follow along the pre-cut circular marking as shown and trim off the insulation.
3. Knock out the pre-cut hole.4. Connect the flange on to the opening with º3 mm. x 12 mm.
BLANKING PLATESSee the following diagram and installation method.
How to install1) Peel off the cover paper to expose adhesive surface of the
blanking plate.2) Apply blanking plate on the supply air tunnel to cover the
opening.3) Press on the attaching area to firmly seal it.
Solenoid valve (optional)
The solenoid valve consists of a motor and a main body. Thesynchronous motor recovers by a spring and can be controlledby a handle. The main body adopts the piston system.
ñ Before installation please read the manual carefully. ñ Installation must be carried out by qualified personnel
following the instructions in this manual.ñ The motor must be kept on a horizontal level with the main body.
Hydraulic connection diagram
1. FAN 4. JOINT 2. HEAT EXCHANGER 5. SOLENOID3. AIR VENT
A solenoid valve (optional) must be fitted to cut off water flow.The choice and installation of components is the responsibility of theinstaller who should follow good working practice and legislation inforce in the country concerned.Particular types of water used for filling or topping up must be treatedwith appropriate treatment systems. For references values, see thetable.
Controls specification2 pipe hot and chilled hydronic cassetteWith motorized valve, Master - Slave control motorized valve,Master - Slave control & computer management system control
1.0 AbbeviationsTs = Setting temperature Tr = Room air temperature sensorTi = Indoor coil temperature sensorAUX = Auxiliary contactMTV = Motorized valve
2.0 Control system operation2.A Master and Slave unit function ñ The control board can be set either as a master unit or slave unit.
2.A.1 Master unit function ñ The master unit sends data on its setting to the slave unit.ñ The master unit settings are Unit ON/OFF, Mode,
Fan Speed, Set Temperature, Swing Function, and Sleep Function (by wall pad only).
2.A.2 Slave unit functionñ The slave unit receives data on its settings from the master unit.ñ The slave unit is allowed to change to a locally desired
setting as long as there are no subsequent changes to the settings of the master unit.
ñ The slave units can be set individually for sleep, timer on and off function.
2.A.3 Master and Slave Installationñ When using remote handset, for the master unit ensure
the JP0 jumper is shorted and for the slave units JP0 is opened before turning ON the main power supply.
ñ When using wired wall pad, JP0 jumper will not function. Use the wall pad to set master and slave units. The wall pad screen will show unit number 00 for master unit, and unit number 01-31 for slave units. See wired wall pad function guide to see how to set master and slave unit.
ñ Connect master to slave units with telephone wire. NOTE: Use 4-core cable and one-to-one configuration.
ñ When MAIN POWER SUPPLY is ON: With motorized valve: The master unit will respond with 3 beeps. The slave unit will respond with 1 beep.If there are beeping sounds from both master and slave the JP0 on both units is shorted. So, there will be no communication.If there is no beep sound, no board is set as the master unit. So, no communication will occur.
ñ Once the master unit receives the signal from the handset, the master unit will send the data.
ñ The slave unit will respond after receiving the data.
2.B Computer management systemñ You can connect the control PCB to your computer
management system through the RS-485 port direct to your computer telephone port with a telephone line.
ñ Master-slave can also be operated through the CMS.ñ The communication protocol is ASM. You can use your
CMS to check all units’ status, and control each unit On/Off, Mode, Set Temperature, Valve open or close, Swing function and Fan speed. You cannot control timer.
ñ The master unit can be connected with 31 slave units with maximum distance of 1 KM.
2.C Air conditioner ON/OFFThere are 3 ways to turn the system on or off:ñ By ON/OFF button on the handset or wired wall pad.ñ By programmable timer on the handset or wired wall pad.ñ By manual control button on the air conditioner.
2.D Power on settingñ When power on signal is received by the air conditioner,
the Mode, Fan Speed, Set Temperature and Swing settings will be the same as the last handset settings before the last power off.
2.E. Cool modeñ If Tr≥Ts+1oC, cool operation is activated. MTV is turned on.
AUX2 is closed. Indoor fan runs at set speed.ñ If Tr≤Ts, cool operation is terminated. MTV is turned off.
AUX2 is opened. Indoor fan runs at set speed.ñ The range of Ts is 16 to 30oC.ñ Indoor fan speed can be adjusted for low, medium,
high and auto.ñ When turned on, MTV requires 30 seconds before it is
fully open.ñ When turned off, MTV requires 120 seconds before it is
fully closed.ñ When the unit is turned off, indoor fan will delay for 5 seconds
before it is turned off.
2.E.1 Low temperature protection of indoor coil ñ If Ti≤2oC for 2 minutes, MTV is turned off. AUX2 is opened.
If indoor fan is set for low speed, it will run at medium speed. If it set at medium or high speed, it will keep running at the same speed.
ñ If Ti≥5oC for 2 minutes, MTV is turned on. AUX 2 is closed. Indoor fan runs at set speed.
2.F Fan modeñ Indoor fan runs at the set speed while MTV is turned off. AUX1
and AUX2 are opened.ñ Indoor fan speed can be adjusted for low, medium,
high and auto.
2.G Heat modeñ If Tr≤Ts-1oC, heat operation is activated. MTV is turned on.
AUX1 is closed. Indoor fan runs at set speed.ñ If Tr>Ts, heat operation is terminated. MTV is turned off.
AUX1 is opened. Indoor fan runs according to POST HEAT condition.
ñ The range of Ts is 16 to 30oC.ñ Indoor fan speed can be adjusted for low, medium, high and
auto.ñ When turned on, MTV requires 30 seconds before it is fully
open.ñ When turned off, MTV requires 120 seconds before it is fully
closed.ñ When the unit is turned off, indoor fan will delay for 5 seconds
before it is turned off.
2.G.1 Pre-Heat ñ If Ti<38oC, when MTV is on, AUX1 is closed and indoor fan
remains off.ñ If Ti>38oC, when MTV is on, AUX1 is closed and Indoor fan
runs at set speed.ñ If indoor coil temperature sensor is damaged, pre-heat time is
set for 2 minutes and indoor fan runs at set speed.
2.G.2 Post-Heat ñ If Ti>38oC, when MTV is off, AUX1 is opened and indoor fan
continues to run at set speed.ñ If Ti<38oC, when MTV is off, AUX1 is opened. Indoor fan runs
30 seconds and stops 3 minutes repeatedly.ñ If indoor coil temperature sensor is damaged, post-heat time
is set for 3 minutes with indoor fan running at set speed.
2.G.3 Over heat protection of indoor coilñ If Ti≥75oC, MTV is turned off, AUX1 is opened and indoor fan
remains on and runs at set speed.ñ If Ti<70oC, MTV is turned on. AUX1 is closed and indoor fan
remains on and runs at set speed. ñ If indoor coil temperature sensor is damaged, the protection
mode will become obsolete and the unit will work as the Pre-heat and Post-heat set times.
2.H Dehumidification modeñ If Tr≥25oC, MTV will be ON for 3 minutes and OFF for 4
minutes.ñ If 16oC≤Tr<25oC, MTV will be ON for 3 minutes and OFF for
6 minutes. ñ If Tr<16oC, MTV will be turned off.
2.I Auto heat-Dehumidification-Cool modeñ In auto mode, the set temperature of the system is 24oC and
the indoor fan runs in auto fan mode.ñ If Tr<21oC, the unit will operate in heat mode.ñ If Tr>25oC, the unit will operate in cool mode.ñ If 21oC≤Tr≤25oC, the unit will operate in dehumidification
mode.ñ Once the unit is turned on in auto mode, it will operate in that
mode and will not changeover.ñ If the unit has been turned off for 2 hours, when turning on the
unit, it will select the operating mode depending on the room temperature.
2.J Auxiliary contacts2.J.1 Cool mode (AUX 2) ñ AUX 2 is closed when MTV is on (in normal operation). ñ AUX 2 is opened when MTV is off or protection of indoor
coil is operating.
2.J.2 Fan mode (AUX 1 AND AUX 2) ñ AUX 1 and AUX 2 are opened when indoor fan is on.
2.J.3 Heat mode (AUX 1) ñ AUX 1 is closed when MTV is on (in normal operation). ñ AUX 1 is opened when MTV is off or protection of indoor coil
is operating.
2.K Sleep modeñ Sleep mode can only be set in cool or heat modes.ñ In cool mode, after sleep mode is set, the indoor fan will run
at low speed and Ts will increase 2oC during 2 hours.ñ In heat mode, after sleep mode is set, the indoor fan will run
at auto fan mode and Ts will decrease 2oC during 2 hours.ñ Changing of operation mode will cancel sleep mode.
2.L Auto fan speedñ In COOL mode, if Tr<Ts+2oC, indoor fan runs at low speed.
If Ts+2oC≤Tr<Ts+3oC, indoor fan runs at medium speed.If Tr≥Ts+3oC, indoor fan runs at high speed.
ñ In COOL mode, the fan speed cannot change until it has run at this speed over 30 seconds.
ñ In HEAT mode, if Tr≤Ts-1oC, indoor fan runs at low speed.If Ts-3oC≤Tr<Ts-1oC, indoor fan runs at medium speed.If Tr<Ts-3oC, indoor fan runs at high speed.
ñ In HEAT mode, the fan speed cannot change until it has run at this speed over 30 seconds.
2.M Louverñ When the unit is connection to power supply, the louver will
swing 100 degrees to close condition.ñ When the unit is turned on, the louver will swing 87 degrees
from close condition to set mode.ñ When the unit is turned off, the louver will swing 100
degrees back to close condition.ñ At swing mode, louver swings between 59-87 degrees range
and can be set within.
2.N Buzzerñ If a command is received by the air conditioner, the system
will respond with a beep.
2.P Auto restartñ The system uses non-volatile memory to save the present
operation parameters when system is turned off or in case ofsystem failure or cessation of power supply. Operationparameters are mode, set temperature, swing, and the fanspeed. When power supply resumes or the system isswitched on again, the same operations as previously setwill function.
2.Q Reset buttonñ On the unit front panel next to the LED lights is the reset button.
Press it once and unit will operate according to auto mode.
2.R Drain pump2.R.1 The unit is offñ If the float switch opens, the drain pump will work. When the
float switch closes, the drain pump will run continuously for5miniutes.
2.R.2 The unit is onñ In cool or dehumidify mode, the drain pump will be turned
on when valve is on, and will remain on for 5 minutes afterthe valve is turned off.
ñ When the mode is changed, the drain pump will remain onfor 5 minutes.
ñ If the float switch opens for 5 seconds after the 5minuteshas finished, the drain pump is turned on again and the valvecloses. After 10 minutes, if the float switch is continuallyopen, the red, yellow and green LEDs will blink to show thedrain pump does not work or there is a leak in the system.
ñ If the float switch closes, the drain pump will turn off after 5minutes.
Maintenanceñ Before performing any service or maintenance operations,
turn off the main power switch.ñ The air filter is made of acrylic fiber and is washable in
water. To remove filter simply open the intake grille byreleasing the two catches. See Fig.19 and the section filterremoval.
ñ Check the filter periodically and before the operating season;clean or replace as necessary.
Prolonged Unit Shut-Downñ Prior to restarting the unit:ñ Clean or replace the air filters.ñ Check and remove any obstruction from the external drain
pan and the internal drain pan.
Extra Maintenanceñ The electrical panel is easily accessible by removing the
cover panel.ñ The inspection or replacement of internal components such
as; heat exchanger coil, condensate ñ Drain pump, float switch, involves the removal of the
condensate drain pan. ñ See Fig.20-25.ñ During the removal of the condensate drain pan protect the
floor under the unit with a plastic sheet from condensatewater that could be spilled.
ñ Remove fixing screws of the drain pan fixture and removecondensate drain pan with care.
The appliance are intended to be maintained byqualified service personnel and located at a level notless than 2.5m.
Filter removalñ Unlock the two fasteners on the front panel.ñ Open the grille downward with care.ñ Pull the filter out along the slot.ñ Clean the filter and reassemble.