Lennox FLATAIR FLHK User manual

FLATAIR
FLCK / FLHK
English/03-2005
INSTALLATION
OPERATION &
MAINTENANCE MANUAL

1
WARNING: Read this manual before installation, reparation o maintenance works.
1.1.- HYSICAL DATA
1.2.- ELECTRICAL DATA
1.3.- FAN SERVICES
1.4.- O ERATING LIMITS
1.5.- UNIT DIMENSIONS
1.6.- SIZES OF STANDARD AND O TIONAL O ENINGS
1.7.- AVAILABLE O TIONS
DATA AGE FOR UNIT COMMISSIONING
4.- MAINTENANCE
4.1.- REVENTIVE MAINTENANCE
4.2.- CORRECTIVE MAINTENANCE
4.3.- FAILURE DIAGNOSIS
2.- INSTALLATION
3.- COMMISSIONING AND O ERATION
1.- GENERAL CHARACTERISTICS AGE
AGE
AGE
AGE
4
5
6
7
8-11
12-15
16-17
18
18
19-20
21
22
22
23-24
25
26
27
28
29
TABLE OF CONTENTS
AGE 3
2.1.- RELIMINARY RE ARATIONS
2.2.- UNIT RECE TION
2.3.- O TIONAL TASKS RIOR TO UNIT INSTALLATION:
CHANGING THE OSITION OF BLOWERS AND AIR INTAKE
2.4.- UNIT LOCATION AND WEIGHT DISTRIBUTION
2.5.- INSTALLATION CLEARANCES
2.6.- DRAINS
2.7.- ELECTRICAL CONNECTIONS
3.1.- RELIMINARY CHECKS
3.2.- STE S TO FOLLOW FOR COMMISSIONING THE UNIT
OINTS TO KEE IN MIND AGE 2
Lennox have been providing environmental solutions since 1895, our range of FLATAIR continues to meet the standards that
have made LENNOX a household name. Flexible design solutions to meet YOUR needs and uncompromising attention to
detail. Engineered to last, simple to maintain and Quality that comes as standard. Information on local contacts at
www.lennoxeurope.com.
All the technical and technological information contained in this manual, including any drawing and technical descriptions
provided by us, remain the property of Lennox and must not be utilised (except in the operation of this product), reproduced,
issued to or made available to third parties without the prior written agreement of Lennox.

2
Make sure to open the power off switch before to install, repair or make maintenance works in the unit, in order to
prevent serious electrical injuries.
To install the unit, keep in mind local and national legislation.
ELECTRICAL CONNECTIONS
ATTENTION - WARNING
Risk of injury with
rotating objects
Low
temperatures
High
temperatures
Risk of injury with
moving objects
Electrical
voltage
Abrasive
surfaces
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 with neutral
soap and water, drying it in the shade before
inserting it in the unit.
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 familiarizing the user with the equipment), reproduced, photocopied,
transferred or transmitted to third parties without prior written authorization 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 notice 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 include 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, familiarize 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 place
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.
The air filter cleaning operations do not
require technical service; however when
an electrical or mechanical operation
is required call an Engineer.
Electric shock hazard can cause injury
or death. Before attempting to perform
any service or maintenance on the
unit, turn OFF the electrical power,
and check that the fan has stopped.
Standard Guidelines to Lennox equipment
OINTS TO KEE IN MIND
DANGER AND WARNING SIGNS

3
UNIT: SERIAL Nr.:
INSTALLATION ADDRESS:
INSTALLER: INSTALLER TEL.:
C ECKS:
SU LY VOLTAGE:
DATA INPUT:
Air Intake Temperature, Outdoor Coil: ºC
DATE OF COMMISSIONING:
INSTALLER ADDRESS:
RATED VOLTAGE OF THE UNIT:
YES NO
GENERAL OWER SU LY CONNECTION
CONTROL ANEL CONNECTION
COLD CYCLE HEATING CYCLE
Air Output Temperature, Outdoor Coil: ºC
Air Intake Temperature, Indoor Coil: ºC
Air Output Temperature, Indoor Coil: ºC
High ressure:
Low ressure:
Options Installed:
ºC
ºC
ºC
High ressure:
Low ressure:
ºC
Comments:
COM RESSOR OIL LEVEL INDICATOR
UNIT ON SHOCK ABSORBERS
DRAINAGE WITH TRA
CLEAN INTERIOR AIR FILTER
CONTROL ANEL IDENTIFICATION CODE
DATA AGE FOR UNIT COMMISSIONING
ELECTRIC POWER CONSUMPTION
Compressor
Fan outdoor section
Compressor
Fan outdoor section
Fan indoor section Fan indoor section
(Amps)
Air Intake Temperature, Outdoor Coil:
Air Output Temperature, Outdoor Coil:
Air Intake Temperature, Indoor Coil:
Air Output Temperature, Indoor Coil:

4
1.- GENERAL CHARACTERISTICS
FLHA: Heat pump unit R-22
FLCK: Cooling only unit R-407C
FLHK: Heat pump unit R-407C
1.1.- HYSICAL DATA
Cooling capacity
COMPRESSOR Nr. / Type
FAN OUTDOOR SECTION
NET WEIG T
DB.- Dry bulb temperature
WB.- Wet bulb temperature
9,8 11,8
kW
Kg
15,3 19,5
1 / Scroll 1 / Scroll 1 / Scroll 1 / Scroll
22,0 28,1
1 / Scroll 1 / Scroll
26,3
1 / Scroll
10
Heating capacity
10,0 12,0
kW
15,5 20,2 22,5 28,727,0
12 16 22 24 28 30
Cooling capacity
9,4 11,3
kW
14,7 19,2 21,0 27,6
Heating capacity kW
10,3 12,3 15,6 20,0 22,8 29,8
FL A 12FL A 10 FL A 16 FL A 22 FL A 24 FL A 28 FL A 30
26,0
27,0
FLCK 12
FL K 12
FLCK 10
FL K 10
FLCK 16
FL K 16
FLCK 22
FL K 22
FLCK 24
FL K 24
FLCK 30
FL K 30
FLCK 28
FL K 28
(*) Air intake temperature in the indoor exchanger: 27ºC DB/19ºC WB
(*) Air intake temperature in the outdoor exchanger: 35ºC DB
(**) Air intake temperature in the indoor exchanger: 20ºC DB / 12ºC WB
(**) Air intake temperature in the outdoor exchanger: 7ºC DB / 6ºC WB
Refrigerant charge R-22
Refrigerant charge
R-407C
2240 2560 3550 5000
7500 82008000
2620 2920 4000 5500
--- 7000---
Maximum air flow
24002350 3750 4350
Maximum available pressure
100 90 120 150
Pa
4500 5250
160 100
5000
120
m /h.
3
34003500 4950 5900 6600 6400
6400
Minimum air flow
(1)
m /h.
3
Maximum air flow
16501500 2400 3200
Maximum available pressure
120 110 160 180
Pa
4000 4500
240 180
4250
200
m /h.
3
2300
2350 3700 5350 6300 6000
6000
Minimum air flow
(1)
m /h.
3
FAN INDOOR SECTION
(1) With admissible minimum air flow.
210205 285 330 410 435
430
205200 280 325 405 430
425
Kg
UNIT MODELS
UNIT MODELS
gr. 2900 3100 3900 5400 8400 87008600
gr.
Cooling only units FLC
Heat pump units FLH
(*)
(**)
(*)
(**)
FLCK
FLHK
Application
C: Cooling only
H: Heat pump
Type of Refrigerant
A: R-22
K: R-407C
Unit size.
Approximate cooling
capacity in kW
UNIT MODELS
FL C K 22
Type of unit
Horizontal compact
FLATAIR

5
1.- GENERAL CHARACTERISTICS
V/f (50 z)
V/f (50 z)
1.2.- ELECTRICAL DATA
3,21
kW
3,84 5,65 7,376,25
Total power in Cooling cycle
Total power in heating cycle
Voltage
230V-400V/ 3 h
230V/ 1 h
FL A 12FL A 10 FL A 16 FL A 22 FL A 24 FL A 28 FL A 30
FLCK 12
FL K 12
FLCK 10
FL K 10
FLCK 16
FL K 16
FLCK 22
FL K 22
FLCK 24
FL K 24
FLCK 30
FL K 30
FLCK 28
FL K 28
kW
kW
kW
kW
Maximum current
Rated absorbed power
2,03 2,54
kW
2,94 3,70 4,85 6,485,48
Total power in cooling cycle
Total power in heating cycle
Voltage
230V-400V/ 3 h
230V/ 1 h
kW
kW
0,38 0,38
kW
0,90 1,30 1,35 1,351,35
0,52 0,52
kW
1,10 1,60 1,60 1,601,60
Maximum current
Total current
Start up current
0,38 0.38 0,90 1,30 1,35 1,351,35
0,52 0,52 1,10 1,60 1,60 1,601,60
2,60 3,41
kW
4,11 5,02 5,85 8,837,41
Rated absorbed power
2,26 3,60
2,79 3,68
kW
4,41 5,20 6,05 9,257,43
Total Current
Start up current
3,69 4,58 6,41 8,10
3,16 4,11 5,60 6,74
9,00 12,20
8,60 10,32
10,38
9,20
UNIT MODELS
UNIT MODELS
A
A
3,50 4,31 6,11 7,92
16,7/7,2 19,3/8,7 19,9/11,5 22,4/12,9
2,93 3,44 4,94 6,60
8,80 11,78
7,80 9,43
25,3/14,6 36,5/21,0
10,36
8,43
28,5/16,3
A
7/4 7,4/4,3
A
52,0/30,044,0/25,439,8/23,037,2/21,531,7/18,3
25,0/14,422,4/12,9
A
24,3
2,6 2,6
7,4/4,3 7,4/4,3 7,4/4,3
3,1 3,1
4,8/2,8 7,4/4,3 8,1/4,7 8,1/4,7 8,1/4,7
18,6
A
A
A
A
52,0/30,044,0/25,439,8/23,037,2/21,531,7/18,3
25,0/14,422,4/12,9
A
24,3
7/4 7,4/4,3
2,6 2,6
7,4/4,3 7,4/4,3 7,4/4,3
3,1 3,1
4,8/2,8 7,4/4,3 8,1/4,7 8,1/4,7 8,1/4,7
16,7/7,2 19,3/8,7 19,9/11,5 22,4/12,9 25,3/14,6 36,5/21,028,5/16,3
18,6
Fan outdoor section
Fan indoor section
Compressor (heating cycle)
Fan outdoor section
Fan indoor section
Compressor
Fan outdoor section
Fan indoor section
Compressor (cooling cycle)
Compressor (heating cycle)
Compressor (Cooling cycle)
Compressor
Fan outdoor section
Fan indoor section
240/136226/132182/108
193/110
145/73104/5697/52
101
240/136226/132182/108193/110145/73104/5697/52
101

6
1.3.- FAN SERVICES
1.- GENERAL CHARACTERISTICS
m /h
3
AIR FLOW
m /h
3
AIR FLOW
6300 6000 60002350 2300 3700 53500
NOMINAL
AIR FLOW
10
20
30
40
50
60
70
80
90
100
110
120
130
140
160
180
200
220
240
6225 5925 59252275 2250 3625 5200
6140 5860 58602240 2200 3550 5090
6100 5800 58002190 2150 3475 4960
6010 5725 57252140 2100 3400 4850
5930 56502080 2040 3320 4725
5875 56002025 1975 3240 4610
5790
5600
55101975 1925 3160 4505
5710
5510
54401925 1860 3090 4400
5620
5440
53501840 1800 3000 4300
5540
5350
52751775 1730 2915 4160
5450
5275
51901625 1650 2825 4040
5350
5190
51001500 2750 3925
5320
5100
5000--- 2670 3800
5150
5000
49102580 3700
4940 4700 47002400 3525
4700 4500 45003200
4425 4250
4175
4000
6600 6400 64003500 3400 4950 59000
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
6490 6300 63003410 3325 4850 5800
6340 6200 62003300 3160 4750 5700
6225 6100 61003190 3075 4625 5600
6100 5980 59803080 2980 4525 5495
5960 5870 58702970 2890 4425 5390
5850 5725 57252840 2790 4325 5280
5710 5600 56002700 2690 4225 5180
5600 5490 54902560 2580 4125 5075
5480 5375 53752410 2400 4040 4975
5350 5250 52502350 3940 4875
5200 51003840 4775
5090 50003750 4675
49504575
48004460
46504350
4500
MODELS 10 12 16 22 24 28 30
10 12 16 22 24 28 30
INDOOR UNITS
OUTDOOR UNITS
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
5650
4910
AVAILABLE STATIC RESSURE a.
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
--- ---
---
---
---
---
---
---
---
---
---
---
MODELS
NOMINAL
AIR FLOW
AVAILABLE STATIC RESSURE a.
Keep in mind reduction on air flow and static pressure services if you use mufflers or external air filter.
NOTE:

7
1.- GENERAL CHARACTERISTICS
1.4.- O ERATING LIMITS
INDOOR
TEM ERATURE
MAXIMUM TEM ERATURES MINIMUM TEM ERATURES
32ºC DB / 23ºC WB
COOLING CYCLE
O ERATION
21ºC DB / 15ºC WB
OUTDOOR
TEM ERATURE
0ºC (MODELS 22/24/28/30)
19ºC (MODELS 10/12/16) (*)
-10ºC (**)
INDOOR
TEM ERATURE
MAXIMUM TEM ERATURES MINIMUM TEM ERATURES
32ºC DB / 23ºC WB 21ºC DB / 15ºC WB
OUTDOOR
TEM ERATURE
INDOOR
TEM ERATURE 27ºC DB 15ºC DB
OUTDOOR
TEM ERATURE 24ºC DB / 18ºC WB -10ºC DB / -11ºC WB
0º C (MODELS 22/24/28/30)
19º C (MODELS 10/12/16) (*)
-10ºC (**)
COOLING CYCLE
O ERATION
HEATING CYCLE
O ERATION
OPERATING LIMITS FOR (COOLING ONLY) UNITS
OPERATING LIMITS FOR ( EATING PUMP) UNITS
DB.- Dry Bulb Temperature
WB.- Wet Bulb Temperature
(*) With condensation pressure control (optional), 0 ºC minimum outdoor operating temperature.
(**) With kit got gas bypass valve.
DE ENDING ON MODEL
(TABLE 1)
TABLE 1- COOLING CYCLE MAXIMUM OUTDOOR OPERATING TEMPERATURES
MODELS
Rated outdoor flow
Minimum outdoor flow
10 12 16 22 24 28 30
MODELS WITH REFRIGERANT R-407C
45
43
43
43
44
41
45
41
46
42
42
39
41
38
MODELS
Rated outdoor flow
Minimum outdoor flow
10 12 16 22 24 28 30
MODELS WITH REFRIGERANT R-22
48
46
48
45
47
45
48
46
48
44
46
42
44
40
(*) With condensation pressure control (optional), 0 ºC minimum outdoor operating temperature.
(**) With kit got gas bypass valve.
DE ENDING ON MODEL
(TABLE 1)

8
1.5.- UNIT DIMENSIONS MODELS 10-12
1.- GENERAL CHARACTERISTICS
Detail drawing of
unit anchor support
25
60
40
25
80
50
20 x12
Oval hole
F
1250
40
14
430
422
735
404
Air filter
OUTDOOR
SECTION
INDOOR
SECTION
SIDE A
SIDE B
SIDE C
SIDE D
SIDE C
SIDE D
25
Unit anchor
support
1250
109
430
280
90
159
303
495
Distance between holes 1300
184 452
425 32
1250
495
Drainage
outside thread
3/4'' Male
Electrical box
1250
820
349
27
303
305
25
Thermostat connection
ower supply
connection
123
20
SIDE A
SIDE B

9
249 422
500 32
1300
125
500
324
98
182
355
1300
595
595
1.5.- UNIT DIMENSIONS MODEL 16
1.- GENERAL CHARACTERISTICS
Detail drawing of
unit anchor support
25
60
40
25
80
50
20 x12
Oval hole
F
1330
1330
830
40
25
324
500
27
355
320
25
123
745
474
20
517
Thermostat connection
ower supply connection
Air filter
SIDE A
SIDE B
OUTDOOR
SECTION
INDOOR
SECTION
SIDE A
SIDE B
SIDE C
SIDE D
SIDE C
SIDE D
Drainage
outside thread
3/4'' Male
Unit anchor
support
Distance between holes 1350
25
Electrical box

10
262 462
497 36,5
1450
42
591
324
107
193
355
1450
595
595
1.5.- UNIT DIMENSIONS MODEL 22
Detail drawing of
unit anchor support
25
60
40
25
80
50
20 x12
Oval hole
F
1520
1520
900
40
26
324
620
92
814
593
SIDE A
SIDE B
SIDE A
SIDE B
SIDE C
SIDE D
SIDE C
SIDE D
47
355
25
300
32
515,5
OUTDOOR
SECTION
INDOOR
SECTION
ower supply
connection
Thermostat
connection
Air filter
Drainage
outside thread
3/4'' Male
Unit anchor
support
Distance between holes 1500
25
1.- GENERAL CHARACTERISTICS
Electrical box

11
490 398
1500
82
658
327
95
223,5
355
645
1500
645
410
1.5.- UNIT DIMENSIONS MODELS 24-28-30
Detail drawing of
unit anchor support
25
60
40
25
80
50
20 x12
Oval hole
1800
1800
1025
103
SIDE A
SIDE B
SIDE A
SIDE B
SIDE C
SIDE D
SIDE C
SIDE D
25
677
124
355
40
26
214
775
565,5
537
939 748
OUTDOOR
SECTION
INDOOR
SECTION
Thermostat
connection ower supply
connection
Air filter
Drainage
outside thread
3/4'' Male
Unit anchor
support
Distance between holes 1550
1.- GENERAL CHARACTERISTICS
25
Electrical box

12
1.- GENERAL CHARACTERISTICS
If the unit is going to be hung using the
anchor supports and the optional air return
opening, the supports must be repositioned
so that the air filter may be removed.
To move the supports, unscrew them from
the inside and fix them again using the
holes located next to the initial position.
1.6.- UNIT O ENING SIZES MODELS 10-12
ELECTRICAL BOX
STANDARD CONFIGURATION
O TIONAL CONFIGURATION
OUTDOOR COIL
COM RESSOR
OUTDOOR
FAN INDOOR
FAN
INDOOR COIL
E.B.
A0
A1
B0
B1
C1
C0
D0
D1
170
90
280
STANDARD
EXTRACTOR
O ENING
O TIONAL
BLOWER
O ENING
303
349
495
349
495
303
38
368
303
495
170
O TIONAL
EXTRACTOR
O ENING
O TIONAL AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
495
14
STANDARD AIR
RETURN
O ENING
425
495
425
495
123
43
43
495
E.B.
452 269
452184
14
422
430 109
495
159
303
90 280
27
430
422
STANDARD
BLOWER
O ENING
O TIONAL
BLOWER
O ENING
A1A0
B0 B1
OUTDOOR SECTION
C1
D1
INDOOR SECTION
C0
D0

1.- GENERAL CHARACTERISTICS
13
A1A0
C1
D1
C0
D0
B0 B1
If the unit is going to be hung using the
anchor supports and the optional air return
opening, the supports must be repositioned
so that the air filter may be removed.
To move the supports, unscrew them from
the inside and fix them again using the
holes located next to the initial position.
1.6.- UNIT O ENING SIZES MODEL 16
ELECTRICAL BOX
STANDARD CONFIGURATION
O TIONAL CONFIGURATION
OUTDOOR COIL
COM RESSOR
OUTDOOR
FAN INDOOR
FAN
INDOOR COIL
E.B.
A0
A1
B0
B1
C1
C0
D0
D1
STANDARD
EXTRACTOR
O ENING
O TIONAL
BLOWER
O ENING
O TIONAL
EXTRACTOR
O ENING
O TIONAL AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
STANDARD AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
O TIONAL
BLOWER
O ENING
OUTDOOR SECTION
INDOOR SECTION
25
517
500 125
595
182
355
98 324
213
500
517
98
324
355
324
595
324
595
355
58
428
355
27
595
123
595
213
500
595
500
595
63
63
595
25
E.B.
422 304
422249

14
A0
A1
B0
B1
C1
C0
D0
D1
A1A0
C1
D1
C0
D0
B0 B1
1.- GENERAL CHARACTERISTICS
If the unit is going to be hung using the
anchor supports and the optional air return
opening, the supports must be repositioned
so that the air filter may be removed.
To move the supports, unscrew them from
the inside and fix them again using the
holes located next to the initial position.
1.6.- UNIT O ENING SIZES MODEL 22
ELECTRICAL BOX
STANDARD CONFIGURATION
O TIONAL CONFIGURATION
STANDARD
EXTRACTOR
O ENING
O TIONAL
BLOWER
O ENING
O TIONAL AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
STANDARD AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
O TIONAL
BLOWER
O ENING
O TIONAL
EXTRACTOR
O ENING
OUTDOOR SECTION
INDOOR SECTION
26
515,5
591 42,5
595
193
355
107 324
591
15
193
107
324
355
324
595
324
595
355
391,5
355
595
515,5
595
26
92
595
193
497
595
497
595
61
61
193
E.B.
OUTDOOR COIL
COM RESSOR
OUTDOOR
FAN INDOOR FAN
INDOOR COIL
462 384
462262

15
A0
A1
B0
C1
C0
D0
D1
A1A0
B0
C1
D1
C0
D0
E.B.
1.- GENERAL CHARACTERISTICS
If the unit is going to be hung using the
anchor supports and the optional air return
opening, the supports must be repositioned
so that the air filter may be removed.
To move the supports, unscrew them from
the inside and fix them again using the
holes located next to the initial position.
1.6.- UNIT O ENING SIZES MODELS 24-28-30
ELECTRICAL BOX
STANDARD CONFIGURATION
O TIONAL CONFIGURATION
STANDARD
EXTRACTOR
O ENING
O TIONAL
BLOWER
O ENING
O TIONAL AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
STANDARD AIR
RETURN
O ENING
STANDARD
BLOWER
O ENING
O TIONAL
BLOWER
O ENING
OUTDOOR SECTION
INDOOR SECTION
26
565,5
658 82
645
223
355
95 327
658
107
213
258
327
355
410
645
410
645
355
355
645
565,5
645
26
537
40
645
645
214
214
103
103
677 222
OUTDOOR COIL
COM RESSOR
OUTDOOR
FAN
INDOOR FAN
INDOOR COIL

16
1.- GENERAL CHARACTERISTICS
1.7.- AVAILABLE O TIONS
OT WATER COIL
It is based on a refrigerating coil made of copper tubing with aluminum swirl fins with
water inlet and outlet connections.
It is supplied mounted inside the unit as picture shows.
MAIN SWITC
The main switch is located on the access panel to the electrical box in the outdoor section in such a way that the unit is
disconnected when the panel is opened.
(Refer to the size diagram on pages 8 to 11 to see the position of the electrical box access panel).
Check to make sure that the main switch is large enough to handle the current for the unit if electric heaters are installed.
P ASE SEQUENCER (T REE-P ASE UNIT)
The phase sequencer is located in the electrical box in the outdoor section, thus assuring that the unit will not begin operation
while the phase connection of the compressor is not correct. Should this occur, then just switch two phase connections.
ON/OFF CONDENSATION PRESSURE CONTROL (MODELS 10-12-16)
The condensation pressure control consists of a pressure switch, which starts and stops the outdoor fan regulating the
condensation temperature, thus the unit will be able to operate in the cooling cycle when the outdoor temperature is below
19ºC (until 0ºC).
OT GAS BYPASS VALVE
The purpose of the BY ASS valve is to make it possible for the unit to operate at low outdoor temperatures (until -10°C), to
be used in cooling-only and heat-pump units in the cooling cycle.
It regulates the capacity of the compressor by injecting hot gas from the compressor discharge side to the evaporator.
CONTROL USING A PROGRAMMABLE CONTROLLER:
With the programmable controller option, the desired temperature can be programmed in the area 24 hours a day, 7 days a
week.
ELECTRIC EATER
Optionally, these units can contain shielded element electric heating batteries that are mounted on the inside of the unit in the
schematic opposite.
The electric heater must get its power from the units electrical box.
A HEATING COIL FROZEN DUE TO LOW AMBIENT CONDITIONS IS NOT COVERED BY THE WARRANTY.
22,7
MODELS LFXO 10
MAXIMUM
CURRENT (A) 230 / III
400 / III
OWER kW
12-16-22
7
WEIGHTS Kg (*)
STAGES 11
6
15,1
8,7
9
13,1
7
24-28-30
8
1
7,5
18,9
10,9
12
30,2
17,4
6
15,1
8,7
9
22,7
13,1
230 / I ---- ---- ---- ----26,1 ----
(*) Add to the unit's weight.
ROTECTION AGAINST FREEZING:
 Use glycol water. GLYCOL IS THE ONLY EFFECTIVE ROTECTION AGAINST FREEZING.
 Regulation components should be used and in addition security components if they are needed.
 Drain the installation. You must ensure that the manual or automatic air vents have been installed on all high points in the
system. In order to drain the system check that all the drain cocks have been installed on all low points of the system.
DIFFERENCE IN TEM ERATURES
BETWEEN HOT WATER INTAKE
AND THE AIR WHICH ENTERS
THE COIL
50ºC 60ºC 70ºC
WATER
FLOW
L/H
WATER COIL
RESSURE
DRO
k a
AIR
RESSURE
DRO
a
10-12 CA ACITY IN W
CA ACITY IN W
CA ACITY IN W
9000 11000 12800
15000 18000 21000
24500 29500 34400
500
1000
1500
0,5
1,5
3
35-30
30-25
25-20
22
24-28-30
16 CA ACITY IN W
14500 17500 20400 1000 1,5 35-30
Nr
ROWS
2
2
2
2
WEIGHT
Kg
4
6
7
5
WATER
OUTLET
DIAMETER
Inches
3/4"
3/4"
3/4"
3/4"
MODELS
FLC/FLH
INDOOR UNIT
nominal-minimum
air flow

17
1.- GENERAL CHARACTERISTICS
1.7.- AVAILABLE O TIONS
REMOTE ROOM-TEMPERATURE SENSOR, REMOTE DUCT SENSOR
These sensors may be used in conjunction with remote controller, allowing the controller to be mounted in a room away from
the conditioned space.
- REMOTE DUCT SENSOR: The sensor will be located in the return-air duct, detecting the air temperature of the
air being air-conditioned.
- REMOTE ROOM-TEM ERATURE SENSOR: The sensor will be placed in the area to be air-conditioned.
FREECOOLING T ERMOSTAT KIT
The Freecooling Thermostat Kit will only operate in cooling-only or heat-pump units in the cooling cycle. This is an energy
saving system that regulates the dampers doors through which outdoor air is taken in when the outdoor temperature is lower
than the area to be air-conditioned.
This kit consists of the damper, a motor, power card and a controller with specific programming, safety thermostat for air
discharge and outdoor sensor, completely factory-assembled.
CRANKCASE EATER (COOLING-ONLY UNITS)
When the unit is operating at low outdoor temperatures it is advisable to fit a crankcase heater.
The purpose of the heater is to keep the oil in the compressor at the correct temperature while the compressor is stopped so
that it can be properly lubricated when started again.
OUTDOOR AIR FILTER KIT
Field assembly.
The outdoor air filter should be installed on the outdoor air inlet of the outdoor
unit and is recommended when working in heavily contaminated areas that
may soil or clog the outdoor Coil. Air filter
Adapter parts
Sound muffler
600
41
660
420
660
400
Anti-rain plate
(only models 10-12-16)
Anti-rain hood
Outdoor air intake
Air filter
C
B
A
F
G
D
E
OUTDOOR MOUNTING KIT
Field assembly.
This option has to be ordered for packaged units when they will be installed outside.
The kit includes an air filter and grille for outdoor air intake which should be installed on the suction side of the outdoor unit,
an anti-rain hood which should be installed on the discharge side of the outdoor fan. For units 10-12-16 it includes also an anti-
rain plate which should be installed on the electrical box.
FREECOOLING EXTERNAL MOUNTED KIT
Field assembly.
This option has to be ordered for packaged units with freecooling when they will be installed outside, it includes:
- FREECOOLING 1-DAM ER: It includes an outdoor air inlet grille to cover damper and actuator.
- FREECOOLING 2-DAM ER: It includes an anti-rain cap to cover return air damper.
SOUND MUFFLER
Available for models 16, 22, 24, 28, 30.
Field assembled, designed to be installed at the extractor opening of the
outdoor unit in order to reduce noise, particularly when the outdoor unit is
installed without ducts, free discharge.
This kit contains the sound muffler and adapter parts for fixing it to the unit.
External mounted freecooling 1-damper
External mounted freecooling 2-damper
I
H
G
F
C
B
A
E
D
MODELS
10-12
A
200
16 200
22 200
24-28-30 200
B
465
460
600
712
C
400
600
600
600
D
635
723
708
784
E
187,4
163
187,5
187,5
F
162
174
159
158,5
G
192
192
192,5
191
H
461
456
592
706
I
153
174
159
158,5
DIMENSIONS
MODELS
10-12
A
180
16 180
22 180
24-28-30 180
B
432
507
505
544
C
459
429
470
685
D
280
311,8
304,9
304,9
E
313
364
363
363
F
356
330
332
418
G
104
104
96,5
96,5
DIMENSIONS

18
2.- INSTALLATION
Wood
block
Securing
screw
If unloading and placement require the use of a
crane, then secure the suspension cables as
shown in the figure.
The unit must be transported in a HORIZONTAL OSITION on its metal bedplate profiles and TRANS ORTATION
BLOCKS. Any other position may cause serious damage to the machine. When the unit is received, it should be
checked to assure that there are no bumps or other damage, following the instructions on the packaging. If there
is damage, the unit may be rejected by notifying the LENNOX Distribution Department and reporting why the
machine is unacceptable on the transport agents delivery notice. Any later complaint or claim made to the
LENNOX Distribution Department, for this type of anomaly, cannot be considered under the Guarantee.
Sufficient space must be allowed to facilitate placement of the unit. The unit may be mounted outdoors. There
should be NO possibility of flooding if floor mounted.
2.1.- RELIMINARY RE ARATIONS
All INSTALLATION, SERVICE and MAINTENANCE operations
must be carried out by QUALIFIED PERSONNEL.
When positioning the unit, be sure that the Rating Plate will always be visible since this
data will be necessary to assure proper maintenance.
The units are designed to be installed with ducts, calculated by qualified technical staff. The joints to be used
between ducts and the openings to the unit should be Elastic Joints. Avoid the use of BY ASS joints between the
extraction air and input air in both the outdoor and indoor sections. The structure where the unit is placed must
be able to support the weight of the unit during operation.
2.2.- UNIT RECE TION
All the units have Metal Bedplate rofiles and Wooden Blocks for transportation.
These wooden blocks must be removed when positioning the unit in its final position.
To remove the transportation blocks,
remove the screw and slide the block along the metal profile.
LACEMENT OF THE BED LATE
AND TRANS ORTATION BLOCKS
Bedplate profile
Wood
block
ow to hoist the unit
Use
separators

19
BLOWER:
From the position to the position
RETURN:
From the position to the position
INLET:
From the position to the position
BLOWER:
From the position to the position
1) Remove the ceiling of the unit,
the Blower anel with Opening and the Service anel.
2) Remove the motor-fan assembly from the unit
unscrewing the supports from the base,
and throwing away the extension collar, if there is one.
3) Unscrew the supports that have been left
on the fan-motor assembly.
4) Turn the fan-motor assembly to its new position
90º horizontally and 180º on its shaft. The motor
should now be accessible from the Service anel
in this new position.
5) Screw down the fan-motor assembly in its new
position using the supports.
6) Assemble the Blower anel with Opening and
the Service anel in its new position, taking special
care with the weather striping.
1) Remove the Air Filter anel and the Service
anel.
2) Switch the position of the Air Filter and Service
anels.
1) Remove the ceiling of the unit,
the Blower anel with Opening and the Service anel.
2) Remove the motor-fan assembly from the unit
unscrewing the supports from the base,
and throwing away the extension collar, if there is one.
3) Unscrew the supports that have been left
on the fan-motor assembly.
4) Turn the fan-motor assembly to its new position
90º horizontally and 180º on its shaft. The motor
should now be accessible from the Service anel
in this new position.
5) Screw down the fan-motor assembly in its new
position using the supports.
6) Assemble the Blower anel with Opening and
the Service anel in its new position, taking special
care with the weather striping.
1) Remove the Intake Opening and the Service
anel.
2) Switch the position of the Opening and Service
anels.
SEE LOCATIONS AND SIZES FOR THE O ENINGS IN THEIR STANDARD AND O TIONAL
OSITIONS ON THE GENERAL MEASUREMENT DRAWINGS.
Blower anel
with Opening
Extension
Collar
Service
anel
Fan-motor assembly
Outdoor Section
Service
anel
Fan-motor assembly
Indoor Section
Blower anel
with Opening
Air Filter
anel
Intake
Opening
Service
anel
Motor Motor
Extension
Collar OUTDOOR
SECTION
INDOOR
SECTION
Blower panel
with Opening
Fan motor
Outdoor Section
Service
anel
Fan-motor assembly
Indoor Section
Blower anel
with Opening
Service
anel
Motor
Intake
Opening
Air Filter
anel
Motor
A0
B0
C0
D0
A1
B1
C1
D1
C0 C1
D0 D1
A0 A1
B0 B1
2.- INSTALLATION
OUTDOOR
SECTION INDOOR
SECTION
2.3.- O TIONAL O ERATIONS RIOR TO UNIT INSTALLATION:
CHANGE IN THE OSITION OF BLOWERS AND AIR INTAKE FOR UNIT MODELS 10-12-16-22
OUTDOOR SECTION INDOOR SECTION
STANDARD AIR INTAKE AND BLOWERS O TIONAL AIR INTAKE AND BLOWERS