Flatair FLW
APPLICATION
GUIDE
FLATAIR
FLW- K
02-2002
www.lennoxeur ope.com
APPLICATION
GUIDE
FLATAIR
FLW- K
02-2002
www.lennoxeur ope.com
Congratulations you have made a wise choice. This product has been designed, assembled
and supplied in one of our world class manufacturing facilities and we feel sure that it
will meet your expectations.
CONTENTS
CONTENTS
PAGE
• PRODUCT RANGE
• GENERAL DESCRIPTION
• SPECIFICATIONS
• ELECTRICAL DATA
• FAN SPECIFICATION
• COOLING CAPACITY TABLES
• OPERATING LIMIT
. WATER CONSUMPTION
• UNIT DIMENSIONS
• UNIT INSTALLATION
• MAINTENANCE
• OPTIONS
• POINTS TO KEEP IN MIND
1
2
3
4
5
6-7
7
8
9
10
11
12-13
14
PRODUCT RANGE
MODEL
V / Ph / 50 Hz
NOMINAL
CAPACITY W
POWER
INPUT KW
FLW 2K
230 V - 1Ph
6.050
1,57
FLW 2,5K
230 V - 1Ph
7.600
2,26
FLW 2,8K
230 V - 1Ph
8.650
2,90
FLW 3K
230 V - 1Ph
230 V - 3Ph
10.750
3,38
14.600
4,37
16.350
5,36
19.350
7,40
400 V - 3Ph
FLW 4K
FLW 5K
FLW 7K
230 V - 3Ph
400 V - 3Ph
230 V - 3Ph
400 V - 3Ph
230 V - 3Ph
400 V - 3Ph
1
GENERAL INFORMATION
The air conditioner, horizontal compact, water condensed type FLW, are specially design for small and average
installation, office, house etc..
On standard version you are able to incorporate electrical heater, hot water coil for use in heat.
COOLING CIRCUIT
CABINET
The cabinet is made of electrozinced steel with epoxy
painted finish and finished on polyester powder. Its
compact dimensions and features allow the unit to
be positioned in almost any location.
Internally the unit incorporate thermal acoustic
insulation to reduce sound level.
Made of welded dehumidifying copper tube with
access connections. Includes dehydrator filter, liquid
recipient expansion system and H.P on all models
and L.P on models 3,4,5 and 7.
ELECTRIC CIRCUIT
EXCHANGER
The electrical panel includes a printed board,
necessary for installation, main switch in all models,
and plate circuit board ready to control the unit, and
incorporate defrosting timer thermostat. the function
of the unit is controlled by cable thermostat.
Made of copper tubing with aluminium swirl fins, they
are designed and specially dimensioned to obtain
the maximum output
COMPRESSOR
REMOTE CONTROL
One compressor of the hermetically sealed type
cooled with internal thermal insulation. It is mounted
on vibration-absorbent blocks both on the inside and
outside, statically and dynamically balanced. In all
cases the compressors are acoustically isolated,
resulting in silent operation.
Digital remote controller by cable at 24V, digital
selector temperature which permit to choose the
following function:
• Selection ON/OFF
• Three functions mode: cool, heat and fan operating.
• Two options fan operating: AUTO (automatic) which
Select turn on and stop automatically fan mode
temperature. On mode ON the fan doesn´t stop
even when temperature is selected.
• Selector three steps fan, except for model
FLW 7K, only one step.
FAN
The units include a centrifugal three speed motor fan,
with a motor directly fitted (except FLW 7K with beltspully), with high performance on air flow.
CONDENSER
OPTIONS
The unit includes condenser plate, compact and
resistant made on inoxidable steel, specially selected
for this type of unit.
•
•
•
•
AIR FILTER
A polypropylene washable air filter is incorporated
in the unit it is accessible for maintenance
2
Electrical heater mounted on fan discharge.
Hot water coil.
Presostatic valves regulating water flow
Digital thermostat programmable.
SPECIFICATIONS
MODEL
FLW 2K FLW 2,5K FLW 2,8K FLW 3K
FLW 4K
FLW 5K
FLW 7K
Nominal cooling capacity
W (*)
6050
7600
8650
10750
14600
16350
19350
Nominal absorber capacity
Kw
1,57
2,26
2,90
3,38
4,37
5,36
7,40
Air flow (max./min.)
m /h
Available static pressure. (1)
Pa
140
100
120
100
120
120
210
Nominal air flow
l/h
1310
1700
2000
2430
3260
3730
4600
Water pressure drop
KPa
15
19
23
38
20
28
40
Net weight
Kg
74
78
100
105
150
150
165
Sound pressure level (LP)(2)
dB(A)
49
50
52
53
57
58
60
H
(mm)
440
440
440
440
480
480
480
W
(mm)
490
490
620
620
700
700
700
L
(mm)
790
790
1080
1080
1500
1500
1500
3/4" G
3/4" G
3/4" G
3/4" G
1" G
1" G
1" G
Dimensions
3
Hydraulic connections
1550/600 1400/800 2350/1000 2250/1200 3100/1500 3100/1800 4500/2250
(*) Interchange air temperature inlet : 27ºC DB / 19ºC WB
Water temperature inlet/outlet : 30ºC / 35ºC
(1) With minimum air flow admissible
(2) Radiated sound level for unit 2 meter distance wit duct in aspiration and air discharge, normal absorption
in accordance with local and capacity of the unit.
ELECTRICAL SPECIFICATIONS
FLW 2K
FLW 2,5K FLW 2,8K FLW 3K
FLW 4K
FLW 5K
FLW 7K
230V /1Ph
Voltage
230V / 400V 3Ph
NOMINAL TOTAL INPUT POWER
Compressor
Kw.
1,42
2,08
2,50
2,98
3,82
4,76
6,20
Indoor Fan
Kw.
0,15
0,18
0,40
0,40
0,55
0,60
1,20
TOTAL
Kw.
1,57
2,26
2,90
3,38
4,37
5,36
7,40
9,1
13,0
15,0
17,4
10,0/5,8
13,0/7,5
16,0/9,3
21,2/12,2
RUNNING CURRENT
Rated current
A
Starting current
A
Starting current
A
12,0
16,0
19,0
23,0
16,0/10,0 20,0/12,0 24,0/14,0 30,0/18,0
53
65
91
90
78/39
3
106/53
117/60
135/67
ELECTRICAL CONNECTIONS
MODEL
2
FLW
2K-2,5K-2,8K
1
FLW 3K
Power supply
2 Thermostat connection
Nº OF WIRES X SECTION
VOLTAGE
50Hz
1
230 V / 1Ph
3 X 4mm
230 V / 1Ph
3 X 4mm
230 V / 3Ph
FLW 4K-5K
1
2
3
4
5
6
7
8
9
10
11
12
2
6 X 1,5mm
2
2
6 X 1,5mm
2
2
5 X 2,5mm
230 V / 3Ph
4 X 6mm
400 V / 3Ph
6 X 1,5mm
2
5 X 4mm
2
6 X 1,5mm
2
2
6 X 1,5mm
2
2
230 V / 3Ph
4 X 10mm
400 V / 3Ph
5 X 6mm
FLW 7K
13
6 X 1,5mm
2
400 V / 3Ph
FLW 2K-2,5K-2,8K-3K
2
2
4 X 4mm
1
FOR ELECTRICAL CONNECTION
REFER TO WIRING DIAGRAM IN
THE UNIT
2
5 X 1,5mm
2
2
5 X 1,5mm
Power supply
THERMOSTAT
Q
230V/50HZ 1Ph + N
A
B
C
D
E
F
G
H
PCB (Electronic plate control)
FLW 3K-4K-5K
FLW 7K
THERMOSTAT
1
2
3
4
5
THERMOSTAT
6
A
7
8
9
B
C
D
10
11
12
13
E
F
G
H
1
2
3
4
5
6
A
PCB (Electronic plate control)
7
8
9
B
C
D
10
11
12
13
E
F
G
H
PCB (Electronic plate control)
Power supply
Power supply
Q
Q
230V/50HZ 3Ph
230V/50HZ 3Ph
Q
Q
400V/50HZ 3Ph + N + PE
400V/50HZ 3Ph + N + PE
Q : Main switch
4
FAN SPECIFICATIONS
AVAILABLE STATIC PRESSURE Pa.
FLW 2K
AIR FLOW
0
m 3/h
20
40
120
140
HIGH SPEED
1550 1450 1350 1250 1150 1000 800
600
MEDIUM SPEED
1175 1160 1140 1050 950
LOW SPEED
675
660
60
650
80
640
100
625
790
600
---
---
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 2,5K
AIR FLOW
0
3
m /h
80
100
120
140
HIGH SPEED
1400 1300 1150 1075 950
800
---
---
MEDIUM SPEED
1100 1050 1000 925
800
---
---
---
---
---
---
---
LOW SPEED
---
20
40
---
60
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 2,8K
AIR FLOW
0
m 3/h
20
40
60
80
100
120
140
HIGH SPEED
2350 2200 2050 1900 1700 1350 1000
---
MEDIUM SPEED
2200 2075 1950 1800 1550 1250
---
---
LOW SPEED
1860 1840 1750 1650 1375 1050
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 3K
AIR FLOW
0
3
m /h
20
40
60
80
100
120
140
HIGH SPEED
2250 2150 2000 1800 1500 1220
---
---
MEDIUM SPEED
2100 2000 1875 1675 1400
---
---
---
LOW SPEED
1850 1820 1700 1525 1260
---
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 4K
AIR FLOW
0
m 3/h
20
40
60
80
100
120
140
HIGH SPEED
3100 2850 2650 2450 2250 2050 1800
---
MEDIUM SPEED
2450 2300 2150 1975 1800 1600
---
---
LOW SPEED
1900 1800 1700 1600 1500
---
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 5K
AIR FLOW
0
m 3/h
20
40
60
80
100
120
140
HIGH SPEED
3100 2850 2650 2450 2250 2050 1800
---
MEDIUM SPEED
2450 2300 2150 1975 1800
---
---
---
LOW SPEED
1900 1800
---
---
---
---
---
---
Units leave factory connected in medium and low speed.
AVAILABLE STATIC PRESSURE Pa.
FLW 7K
AIR FLOW
0
m 3/h
30
60
90
120
150
180
210
HIGH SPEED
4500 4200 3900 3600 3300 3000 2750 2500
OPEN PULLEY 1-1/2 TURN
4060 3750 3450 3200 2900 2650 2300
---
OPEN PULLEY 3 TURN
3750 3400 3100 2800 2550 2250
---
Units leave factory with open pulley (1-1/2 V)
5
---
COOLING CAPACITY
FLW 2K
INLET AIR
TEMPERATURE TO
INDOOR UNIT
COOLING
CAPACITY
IN kW
FLW 2,5K
CONDENSING TEMPERATURE
CONDENSING TEMPERATURE
30°C
35°C
40°C
45°C
50°C
55°C
30°C
35°C
40°C
45°C
50°C
55°C
TOTAL
5,72
5,44
5,16
4,88
4,59
4,30
7,16
6,87
6,57
6,27
5,96
5,64
4,04
5,92
4,35
6,44
3,90
5,62
4,21
6,12
3,76
5,32
4,07
5,80
3,62
5,02
3,93
5,48
3,48
4,71
3,79
5,15
5,16
7,74
5,52
8,37
5,01
7,43
5,37
8,04
4,86
7,12
5,22
7,71
4,71
6,80
5,07
7,37
4,56
6,47
4,92
7,03
4,41
6,14
4,77
6,68
19°C WB
29°C DB
SENSIBLE
TOTAL
SENSIBLE
TOTAL
SENSIBLE
TOTAL
4,18
6,21
4,49
6,75
4,79
7,33
4,65
7,00
4,51
6,66
4,37
6,32
4,23
5,98
4,09
5,62
5,87
9,04
5,72
8,69
5,57
8,34
5,42
7,99
5,27
7,62
5,12
7,25
21°C
WB
SENSIBLE
4,83
4,69
4,54
4,40
4,26
4,12
5,89
5,74
5,59
5,44
5,29
5,14
32°C DB
23°C WB
TOTAL
SENSIBLE
7,95
5,12
7,60
4,97
7,24
4,83
6,88
4,69
6,51
4,55
6,13
4,40
9,76
6,22
9,39
6,07
9,02
5,92
8,64
5,77
8,25
5,62
7,86
5,47
21°C
DB
15°C WB
24°C DB
17°C WB
27°C DB
FLW 2,8K
INLET AIR
TEMPERATURE TO
INDOOR UNIT
21°C
DB
COOLING
CAPACITY
IN kW
TOTAL
15°C WB SENSIBLE
24°C DB TOTAL
17°C WB SENSIBLE
27°C DB TOTAL
19°C WB SENSIBLE
29°C DB TOTAL
FLW 3K
CONDENSING TEMPERATURE
CONDENSING TEMPERATURE
30°C
35°C
40°C
45°C
50°C
55°C
30°C
35°C
40°C
45°C
50°C
55°C
8,07
7,74
7,40
7,05
6,71
6,36
9,88
9,50
9,11
8,72
8,33
7,93
6,20
8,77
6,70
9,52
6,04
8,41
6,53
9,13
5,88
8,04
6,37
8,74
5,72
7,68
6,20
8,34
5,55
7,30
6,04
7,94
5,39
6,93
5,87
7,53
7,42
10,74
8,00
11,68
7,23
10,34
7,81
11,24
7,05
9,92
7,62
10,80
6,86
9,51
7,43
10,36
6,67
9,09
7,24
9,91
6,48
8,66
7,05
9,45
7,17
10,32
7,01
9,91
6,84
9,49
6,67
9,06
6,50
8,63
6,34
8,19
8,57
12,70
8,37
12,23
8,18
11,76
7,99
11,28
7,80
10,79
7,60
10,30
WB SENSIBLE
7,21
7,04
6,87
6,70
6,53
6,36
8,63
8,43
8,24
8,04
7,85
7,65
32°C DB TOTAL
23°C WB SENSIBLE
11,19
7,66
10,74
7,49
10,29
7,32
9,83
7,15
9,36
6,97
8,88
6,80
13,80
9,17
13,29
8,97
12,78
8,77
12,27
8,57
11,74
8,38
11,21
8,18
21°C
INLET AIR
TEMPERATURE TO
INDOOR UNIT
COOLING
CAPACITY
IN kW
FLW 4K
FLW 5K
CONDENSING TEMPERATURE
CONDENSING TEMPERATURE
30°C
35°C
40°C
45°C
50°C
55°C
30°C
35°C
40°C
45°C
50°C
55°C
TOTAL
13,70
13,10
12,52
11,94
11,37 10,81
14,96
14,45
13,93
13,39
12,83
12,27
10,23
14,86
11,00
16,11
9,93
14,23
10,70
15,44
9,64
13,60
10,41
14,77
9,36
12,98
10,13
14,11
9,09 8,83
12,37 11,77
9,85 9,59
13,45 12,80
11,13
16,19
11,96
17,52
10,88
15,65
11,70
16,95
10,62
15,10
11,45
16,36
10,36
14,53
11,18
15,75
10,09
13,93
10,91
15,12
9,82
13,33
10,64
14,47
19°C WB
29°C DB
SENSIBLE
TOTAL
SENSIBLE
TOTAL
SENSIBLE
TOTAL
11,75
17,47
11,45
16,74
11,16
16,03
10,87
15,32
10,59 10,32
14,61 13,91
12,75
18,96
12,50
18,36
12,24
17,73
11,98
17,08
11,70
16,41
11,43
15,71
21°C
WB
SENSIBLE
11,81
11,51
11,21
10,92
10,64 10,36
12,80
12,55
12,30
12,03
11,76
11,48
32°C DB
23°C WB
TOTAL
SENSIBLE
18,91
12,52
18,14
12,22
17,37
11,92
16,61
11,63
15,85 15,09
11,34 11,06
20,51
13,57
19,87
13,32
19,21
13,06
18,51
12,79
17,79
12,52
17,04
12,24
21°C
DB
15°C WB
24°C DB
17°C WB
27°C DB
Nominal capacity established on following conditions:
• Air inlet temperature : 27ºC DB/19ºC WB
• Inlet/outlet water temperature: 30ºC/35ºC
• Condensing Temperature between 40 and 45ºC depending on models
6
DB:Dry bulb
WB:Wet bulb
COOLING CAPACITY
FLW 7K
INLET AIR
TEMPERATURE TO
INDOOR UNIT
COOLING
CAPACITY
IN kW
CONDENSING TEMPERATURE
30°C
35°C
40°C
45°C
50°C
TOTAL
18,46
17,81
17,15
16,47
15,78 15,07
13,65
19,97
14,65
21,61
13,33
19,29
14,33
20,89
13,01
18,59
14,00
20,14
12,67
17,86
13,67
19,36
12,34
17,12
13,33
18,56
19°C WB
29°C DB
SENSIBLE
TOTAL
SENSIBLE
TOTAL
SENSIBLE
TOTAL
15,62
23,38
15,30
22,61
14,97
21,81
14,63
20,98
14,28 13,93
20,12 19,24
21°C
WB
SENSIBLE
15,69
15,36
15,03
14,69
14,34 13,99
32°C DB
23°C WB
TOTAL
SENSIBLE
25,28
16,61
24,46
16,29
23,61
15,95
22,72
15,61
21,80 20,84
15,26 14,90
21°C
DB
15°C WB
24°C DB
17°C WB
27°C DB
55°C
12,00
16,35
12,98
17,74
DB:Dry bulb
WB:Wet bulb
Nominal capacity established on following conditions:
• Air inlet temperature : 27ºC DB/19ºC WB
• Inlet/outlet water temperature: 30ºC/35ºC
• Condensing Temperature between 40 and 45ºC depending on models
Data based on following air flow
AIR FLOW M3 /H
2K
2,5K
2,8K
1100
1200
1900
MODEL FLW
3K
4K
2000
2300
5K
7K
2500
3500
FLW 2K
COEFFICIENTS OF CORRECTION OF COOLING CAPACITY
AIR FLOW
Data of cooling capacity rated on tables are calculated for
nominal air flow, for minimum /maximum air flow, you must
follow the following table
MAX
NOMINAL
MIN.
TOTAL CAPACITY
1,05
1
0,89
SENSIBLE CAPACITY
1,15
1
0,77
FLW 2,8K
FLW 2,5K
AIR FLOW
FLW 3K
MAX
NOMINAL
MIN.
MAX.
NOMINAL
MIN
MAX.
NOMINAL
MIN.
TOTAL CAPACITY
1,03
1
0,92
1,03
1
0,90
1,02
1
0,91
SENSIBLE CAPACITY
1,07
1
0,84
1,09
1
0,77
1,05
1
0,80
MAX.
NOMINAL
MIN.
MAX.
NOMINAL
MIN
MAX
NOMINAL
MIN
1,04
1
0,92
1,03
1
0,94
1,03
1
0,92
1,13
1
0,83
1,09
1
0,87
1,11
1
0,82
FLW 5K
FLW 4K
AIR FLOW
TOTAL CAPACITY
SENSIBLE CAPACITY
FLW 7K
OPERATING LIMITS
32ºC / 38ºC
Water Temperature inlet
/outlet into the outdoor
section
W.B: Wet bulb
D.B: Dry bulb
-- /21ºC
19°C / 14ºC
32°C / 23ºC
Air temperature inlet into
indoor section D.B/W.B
7
WATER CONDENSER CONSUMPTION AND PRESSURE DROP
Normally, the water condense is used across a cooling tower with water temperature around 30ºC, and water
flow available to work the unit with condensation temperature between 40 and 45ºC.
You are able not to use a cooling tower when the unit is near a river etc.. with enough flow and enough quality of
the water. The use of the water must be used always across a previous Analysis of water.
If the water inlet temperature is below 20ºC, It is then necessary to use a regulation valve (Option) to maintain
condensing temperature value between 40 and 45 ºC.
Depending inlet water temperature and condensation temperature needed you will be able to calculate water
consumption following the table below.
TABLE OF WATER CONSUMPTION ON UNITS FLW (L/H) (*)
DIFFERENCES BETWEEN:
CONDENSATION TEMPERATURE AND INLET WATER TEMPERATURE (ºC)
UNIT
10
15
20
25
30
35
40
45
FLW 2K
2280
850
500
360
275
225
185
160
FLW 2,5K
2900
1100
650
470
360
300
245
210
FLW 2,8K
3450
1250
750
550
420
340
280
245
FLW 3K
4100
1500
900
650
500
360
350
300
FLW 4K
5550
2050
1200
850
600
470
470
400
FLW 5K
6250
2300
1400
1000
800
640
540
470
FLW 7K
7500
2900
1700
1300
1000
800
680
590
( * ) Indoor inlet
temperature
27ºC WB / 19ºC DB
COEFFICIENTS FOR DIFFERENT AIR INLET TEMPERATURE.
For different air inlet temperature multiply the
consumption by the coefficient of this table.
INDOOR AIR INLET TEMPERATURE (DB/WB)
21/15
24/17
27/19
29/21
32/23
0,87
0,93
1
1,07
1,14
Coefficients of water consumption
PRESSURE DROP ON WATER CONDENSER
100
WATER PRESSURE DROP Kp
90
80
70
60
FLW 2K-2,5K-2,8K-3K
50
40
FLW 4K-5K-7K
30
20
10
0
1000
1500
2000
2500
3000
3500
WATER FLOW (L / H)
8
4000
4500
5000
DIMENSIONS
2K - 2,5K
2,8K - 3K
4K - 5K - 7K
A
440
440
480
B
790
1080
1500
C
490
620
700
D
335
540
545
E
410
490
910
F
45
50
45
G
H
35
385
25
395
25
435
I
20
20
20
J
K
55
405
120
480
145
515
L
M
30
40
20
30
40
30
N
380
395
435
Ñ
20
15
15
A
B
A
M
H
G
A
38
8
D
E
20
1
2
3
5
6
FLW 2K-2,5K
1
4
OUTLET
AIR
2
3
7
8
9
INLET AIR
10
12
FLW
2,8K-3K4K-5K-7K
OUTLET
AIR
3
5
L
MOTOR FAN
COMPRESSOR
COIL
AIR FILTER
WATER EXCHANGER
ELECTRICAL BOX FLW 2,8-3
ELECTRICAL BOX FLW 4-5-7
DRAIN PAN
INLET/OUTLET WATER CONNECTIONS
POWER SUPPLY
MAIN SWITCH
DRAINAGE TUBE
MOTOR (ONLY MODEL 7)
DIAMETER DRAINAGE TUBE
1
12
6.1
11
10
11
6.2
2
8
5
6.1
6.2
7
4
K
C
11
9
J
F
B
9
10
N
I
Ñ
C
7
FLW
2K-2,5K
16 mm
4
INLET AIR
9
FLW
2,8K-3K-4K-5K-7K
27 mm
INSTALLATION
PRE-INSTALLATION
Prior to install the equipment make sure of the following points:
• Leave enough space for access to air supply, water section, power supply and outlet condense.
• The water section must have the correspondent valves.
• Easy extraction of the air filter.
• Easy access to lateral panel for easy accessibility to all services of the unit.
• Unit must be mounted with springs.
• The electrical section must be done following legal normative
• Check that the tension is the same as installation place.
• Check the water condense quality, across analysis.
• Keep in mind water inlet temperature of the unit. Temperature below 20ºC you will need a water regulation
pressostatic valve ( element as option) to maintain condensation temperature value between 40 and 45ºC.
• Depending on water entry temperature, you have to calculate the water flow following the consumption table.
• Check that air flow needed correspond for duct installation.
• Keep in mind power supply for maximum consumption for each unit.
INSTALLATION
• All installation must be carried out by qualified personnel
• Make sure that the unit is completely disconnected from the power supply before carrying out any type of work
on the unit.
Hydraulic circuit:
• Make sure that the water connections are correct, inlet water (down side), outlet water (upper side)
• Fit a water filter in the outlet water connection, the step of the mesh should not be less than 0.5mm,
which avoid welded and dirty get to the unit.
• If quality of water is not good, may be necessary to install a decalcified
• Install cut off valves at inlet and outlet water connections, because of in case of repairs, the hydraulic
circuit can be independent.
• Install an adequate water pump, and all the elements necessaries for the installation.
• Air flow:
• All models include three fan speed motor fan.
• Make the motor fan connections for the fan speed required to adequate the air flow needed for the
installation
• Drainage tube:
• Use the flexible tube connected to the tray as a drainage tube.
Cause a siphon with this tube in order to avoid the inlet of scents from the installation to the unit.
• Install a siphon from the drainage tube of tray with a
difference in height of 80 mm to prevent these from not
evacuating due to the negative pressure created by the
fans. The pipe will have a 2% slope to make it easier for
the condensates to drain off.
Mín. 80 mm.
2%
Tapón para registro y limpieza
10
SERVICE AND MAINTENANCE
• The unit under supply, have rotating objects and high temperature into the pipe. Make sure to turn off electrically
the unit before to access for maintenance or revision.
• Air filter: Clean the filter (maximum each 6 months), but the clean of the filter depend on the ambient where the
units is working.
• Water filter: Realise a clean of the filter.
• Security elements: The unit include electrical elements of security( Internal thermal protection on the compressor
and motor fan, external thermal protection on the compressor and motor three phase) and cooling elements of
security like high and low pressostat pressure with electrical rearm. If limits of function of the unit is out of conditions
of work, some protections will be display.
LOCALISATION OF PROBLEMS
PROBLEMS
CAUSES
• Cut low pressure (Electrical rearm) (*)
• Cooling capacity low.
• Freeze on coil
• Air in temperature very low
• Defect on refrigerant charge.
Test that the refrigerant is correct.
• Air filter dirty
• low air flow.
• Water temperature is too low
• Cut high pressure (Electrical ream) (*)
• High consumption
• Thermal compressor protection cut
• High water temperature
• Low air flow
(*) Rearm electrically the unit turning off/on, after repair the cause which produce a cut on high and low pressure.
11
OPTIONS
HOT WATER COIL TECHNICAL DATA
FLW -2K -2,5K
DIFFERENCES BETWEEN WATER INLET
TEMPERATURE AND COIL AIR INLET (ºC)
60
50
40
CAPACITY IN KW FOR WATER FLOW OF 250 L/H .
5,10
4,25
3,40
PRESSURE AIR DROP = 15 Pa.
PRESSURE WATER DROP = 20K Pa
3
DATA CALCULATED FOR AIR FLOW = 1100 m /h
FLW -2,8K - 3K
DIFFERENCES BETWEEN WATER INLET
TEMPERATURE AND COIL AIR INLET (ºC)
CAPACITY IN KW FOR WATER FLOW OF 350 L/H .
PRESSURE AIR DROP = 20 Pa.
PRESSURE WATER DROP = 40K Pa
3
DATA CALCULATED FOR AIR FLOW = 2000 m /h
60
50
40
7,70
6,50
5,20
FLW -4K -5K
DIFFERENCES BETWEEN WATER INLET
TEMPERATURE AND COIL AIR INLET (ºC)
CAPACITY IN KW FOR WATER FLOW OF 600 L/H .
PRESSURE AIR DROP = 13 Pa.
PRESSURE WATER DROP = 50K Pa
DATA CALCULATED FOR AIR FLOW = 2500 m /h
60
50
40
12,40
10,30
8,30
3
FLW 7K
DIFFERENCES BETWEEN WATER INLET
TEMPERATURE AND COIL AIR INLET (ºC)
CAPACITY IN KW FOR WATER FLOW OF 600 L/H .
PRESSURE AIR DROP = 18 Pa.
PRESSURE WATER DROP = 50K Pa
3
DATA CALCULATED FOR AIR FLOW = 3500 m /h
60
50
40
13,60
11,30
9,00
Air filter
INSTALLATION
This option kit has a hot water coil with two profile
attachment for coil to the unit
Make sure to install the hot water coil to the aspiration
of the unit, then:
• Dismantle the air filter attachment.
• Fix the profile attachment across screw to the
aspiration.
• Fix the hot water coil to the profile attachment. Put
the new air filter across the profiles.
Hot water coil
Profile attachment
12
OPTIONS
ELECTRICAL HEATER
Voltage
Power
FLW
2,8K - 3K
5 Kw 1 Step
6 Kw 1Step
9 Kw 1Step
FLW
4K - 5K - 7K
9 Kw 1Step
12 Kw 1 Step
FLW 2K - 2,5K
230 V 1Ph -50Hz
230 V /400 V 3Ph -50Hz
230 V /400 V 3Ph -50Hz
Electrical box
Electrical heater
Knock out
INSTALLATION
•The electrical should be install into the impulsion fan of the unit.
• Fix the screw following the figure.
• Take out the knock out, and take the electrical supply of the electrical heater to the elctrical box of the unit.
PRESOSTATIC VALVES
If water inlet temperature is below 20ºC we recommend to maintain level condensation temperature in (40 a
45ºC)
FUNCTION
The presostatic valve maintain some values of the condensation pressure regulating the water flow which enter
into the condenser.
When the condensation pressure is up, the valve open and water enter. and when pressure is low the valve close.
Situation pipe in
Connect to plug
high pressure
Water out
VASTAGE OF
REGULATION
Water in
UNIT
CONDENSER
INSTALLATION
• Substitute the out pipe of the exchanger plate into the
unit for a presostatic valve.
• Keep in mind the row indicated in the valve.
• El vastage regulation must be above for easy access
to the regulation.
• Connect the capillary tube of the valve to the plug of
high pressure in the pipe of the unit.
REGULATION PRESOSTATIC VALVES
• Connect a manometer of high pressure (30 bar) near the refrigerating circuit of the unit.
• Turn over the vastage in the head of the valve( right the valve open, left the valve close) regulating the water flow
which enter into the unit.
• You must leave the unit working during 10 minutes and see the indication of the manometer. If the condensation
pressure temperature is approximately 45ºC the valve is correctly regulated. If not restart the regulation described
before.
13
POINTS TO KEEP IN MIND
Abrasive
surfaces
Low
temperature
High
temperature
Risk of injury with
moving objects
Electrical Risk of injury with rotating
objects
voltage
ATTENTION - WARNING
Electrical shock hazard can cause injury
or death. Before attempting to perform
any service or maintenance on the unit,
turn OFF the electrical power.
FILTER CLEANING
Check the air filter and make
sure it is not blocked with
dust or dirt
If the filter is dirty, wash it in a bowl neutral
soap and water, drying it in the shade
before inserting it in the unit
STANDARD GUIDELINES TO LENNOX EQUIPMENT
All technical data contained in these operating instructions including the diagrams and technical description
remains the property of Lennox and may not be used (except for the purpose of familiarising the user with the
equipment), reproduced, photocopied, transferred or transmitted to third parties without prior written authorisation
from Lennox.
The data published in the operating instructions is based on the latest information available. We reserve the right
to make modifications without notice.
We reserve the right to modify our products without obligation to modify previously supplied goods.
These operating instructions contain useful and important information for the smooth operation and maintenance
of your equipment.
The instructions also includes guidelines on how to avoid accidents and serious damage before commissioning
the equipment and during its operation and how to ensure smooth and fault-free operation. Read the operating
instructions carefully before starting the equipment, familiarise yourself with the equipment and handling of the
installation and carefully follow the instructions. It is very important to be properly trained in handling the equipment.
These operating instructions must be kept in a safe near the equipment.
Like most equipment, the unit requires regular maintenance. This section concerns the maintenance personnel
and management.
If you have any queries or would like to receive further information on any aspect relating to your equipment, do
not hesitate to contact us.
14
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