APPLICATION |
GUIDE |
WING |
Congratulations you have made a wise choice with the purchase of your Lennox air conditioning unit.
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.
Lennox an international organisation with world wide distribution takes pride in supplying you with this product.
CONTENTS
CONTENTS |
PÁGE |
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. PRODUCT RANGE |
2-3 |
. SYSTEM CONFIGURATION |
4 |
. GENERAL DESCRIPTION |
5 |
. SPECIFICATIONS |
6-9 |
. ELECTRICAL DATA |
10-11 |
. ELECTRICAL CONNECTIONS |
12-14 |
. INDOOR MOTOR FAN CHARACTERISTICS |
15 |
. OPERATING LIMITS |
16 |
. REFRIGERANT CONNECTIONS |
17-19 |
. DIMENSIONS AND SETTING UP TEMPLATES OUTDOOR UNIT |
20 |
. DESCRIPTION OUTDOOR UNIT |
21-22 |
. ENTRANCE STANDARD/ OPTIONAL OUTDOOR UNIT |
23 |
. DIMENSIONS AND SETTING UP TEMPLATES INDOOR UNIT |
24 |
. INSTALATION AND MOUNTING |
25 |
. OPTIONS |
26-27 |
MAINTENANCE |
28 |
. POINTS TO KEEP IN MIND |
29 |
1
COOLING ONLY R-407C
LTX INDOOR UNIT IN COMBINATION, WITH AXIAL FAN OUTDOOR UNIT
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OUTDOOR |
INDOOR |
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NOMINAL |
NOMINAL |
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MODEL |
V / Ph / 50 Hz |
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CAPACITY W |
CAPACITY KW |
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UNIT |
UNIT |
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COOLING ONLY |
COOLING ONLY |
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WING 2,8TFK |
KJF 2,8K |
LTX 3 |
230V-1Ph |
7.350 |
3,06 |
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WING 3TFK |
KJF 3K |
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230V -1Ph |
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WING 3TFK |
KJF 3K |
LTX 3 |
230 V - 3Ph |
9.500 |
3,85 |
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WING 3TFK |
KJF 3K |
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400 V - 3Ph |
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WING 4TFK |
KJF 4K |
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230 V - 3Ph |
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LTX 5 |
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11.600 |
4,70 |
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WING 4TFK |
KJF 4K |
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400 V - 3Ph |
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WING 5TFK |
KJF 5K |
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230 V - 3Ph |
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LTX 5 |
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13.500 |
5,60 |
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KJF 5K |
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WING 5TFK |
400 V - 3Ph |
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LTX INDOOR UNIT IN COMBINATION, WITH CENTRIFUGAL FAN OUTDOOR UNIT
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OUTDOOR |
INDOOR |
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NOMINAL |
NOMINAL |
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MODEL |
V / Ph / 50 Hz |
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CAPACITY W |
CAPACITY KW |
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UNIT |
UNIT |
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COOLING ONLY |
COOLING ONLY |
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WING 2,8CFK |
KCF 2,8K |
LTX 3 |
230V-1Ph |
7.130 |
3,07 |
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WING 3CFK |
KCF 3K |
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230V -1Ph |
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WING 3CFK |
KCF 3K |
LTX 3 |
230 V - 3Ph |
9.100 |
3,86 |
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WING 3CFK |
KCF 3K |
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400 V - 3Ph |
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WING 4CFK |
KCF 4K |
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230 V - 3Ph |
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LTX 5 |
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12.100 |
5,17 |
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WING 4CFK |
KCF 4K |
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400 V - 3Ph |
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WING 5CFK |
KCF 5K |
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230 V - 3Ph |
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LTX 5 |
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14.000 |
7,00 |
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KCF 5K |
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WING 5CFK |
400 V - 3Ph |
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2
PRODUCT RANGE HEAT PUMP
HEAT PUMP R-22C
LTX INDOOR UNIT IN COMBINATION, WITH AXIAL FAN OUTDOOR UNIT
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OUTDOOR |
INDOOR |
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NOMINAL |
NOMINAL |
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MODEL |
V / Ph / 50 Hz |
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CAPACITY W |
CAPACITY KW |
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UNIT |
UNIT |
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COOLING |
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HEAT |
COOLING |
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HEAT |
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ONLY |
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PUMP |
ONLY |
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PUMP |
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WING 2,8TB |
KJB 2,8 |
LTX 3 |
230V-1Ph |
7.350 |
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7.800 |
3,06 |
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2,60 |
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WING 3TB |
KJB 3 |
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230V -1Ph |
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WING 3TB |
KJB 3 |
LTX 3 |
230 V - 3Ph |
9.250 |
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9.000 |
3,70 |
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3,00 |
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WING 3TB |
KJB 3 |
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400 V - 3Ph |
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WING 4TB |
KJB 4 |
LTX 5 |
230 V - 3Ph |
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11.600 |
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12.100 |
4,70 |
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3,90 |
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KJB 4 |
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WING 4TB |
400 V - 3Ph |
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WING 5TB |
KJB 5 |
LTX 5 |
230 V - 3Ph |
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13.700 |
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14.600 |
5,90 |
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5,00 |
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WING 5TB |
KJB 5 |
400 V - 3Ph |
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LTX INDOOR UNIT IN COMBINATION, WITH CENTRIFUGAL FAN OUTDOOR UNIT
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OUTDOOR |
INDOOR |
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NOMINAL |
NOMINAL |
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MODEL |
V / Ph / 50 Hz |
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CAPACITY W |
CAPACITY KW |
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UNIT |
UNIT |
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COOLING |
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HEAT |
COOLING |
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HEAT |
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ONLY |
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PUMP |
ONLY |
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PUMP |
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WING 2,8CB |
KCB 2,8S |
LTX 3 |
230V-1Ph |
7.130 |
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8.150 |
3,07 |
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2,77 |
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WING 3CB |
KCB 3S |
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230V -1Ph |
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WING 3CB |
KCB 3S |
LTX 3 |
230 V - 3Ph |
9.100 |
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10.220 |
3,86 |
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3,40 |
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WING 3CB |
KCB 3S |
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400 V - 3Ph |
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WING 4CB |
KCB 4S |
LTX 5 |
230 V - 3Ph |
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12.100 |
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13.500 |
5,17 |
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4,33 |
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KCB 4S |
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WING 4CB |
400 V - 3Ph |
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WING 5CB |
KCB 5S |
LTX 5 |
230 V - 3Ph |
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14.000 |
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17.400 |
7,00 |
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6,40 |
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WING 5CB |
KCB 5S |
400 V - 3Ph |
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3
SYSTEM CONFIGURATION (INDOOR UNIT)
IMPORTANT
Prior of making the electrical connections,
set the switch for heat pump unit or for cooling only unit.
This unit is valid for operating as a cold only or heat pump application.
The unit should be configured prior to making the electrical connections, by setting the configuration switch as follows:
Switch 2
Switch 1
ON OFF
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SWITCH |
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MODEL |
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1 |
2 |
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COOLING ONLY |
OFF |
ON |
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(*) |
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HEAT PUMP |
ON |
ON |
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(*) Configuration from factory..
Check page 8 for more information about the situation of this switch.
NOTE:
If errors are made during the configuration of the system, switch off the main power supply, set configuration switch in the correct position and then switch the power on.
4
INDOOR
UNIT LTX
OUTDOOR UNIT |
OUTDOOR UNIT |
KJF/KJB |
KCF/KCB |
The ceiling air conditioner SPLIT, on version cooling only and heat pump, are units air condensed. The indoor unit with direct air supply, realise function of cooling , heating dehumidification, cleaning air of the sites. Also the option to incorporate with maximum facilities a heating resistance on units cooling only and also on heat pump units.
The indoor unit can be combine with outdoor units provide with axial fan (KJF/ KJB) for outside installation or with outdoor unit provide with centrifugal fan (KCF/ KCB) for installation inside buildings.
CABINE
The outdoor unit is made on electrozinced steel with epoxy painted finish, able to work outdoors under the worst conditions. its dimensions and features allow the unit to be positioned in almost any location. It incorporate thermal acoustic insulation. The indoor unit is finished in a decorative plastic with thermal acoustic insulation.
HEAT EXCHANGER
Made of cooper tubes and aluminium fins. Coils have been designed and manufactured to ensure maximum efficiency. The L shaped outside unit heat exchanger makes this unit compact an highly efficiency.
AIR SWEEP
The indoor unit (LTX) have an automatic dispositive to distribute horizontal air flow.
COOLING CIRCUIT
Made of welded dehydrated copper pipe with service port on the suction and liquid lines. Coupling valves on outdoor unit and flare connexion on indoor unit to facilitate the refrigerant connexion. A muffler in the compressor discharge line eliminates noise and pulsation of the discharge line. The unit includes filter dryer and expansion system. It has unidirectional and reversing valves of 4 pipes for unit in heat pump.
COMPRESSOR
An hermetically sealed compressor, with internal thermal protection. It is mounted on vibration absorbent blocks both on the inside and outside, statically an dynamically balanced. In all cases the compressors are acoustically isolated, resulting in low noise.
FANS
The indoor units includes centrifugal motor fan of three speed, with exceptional features on noise level Depending on outdoor type, it includes one or two axial motor fan (units KJF/KJB), or one centrifugal fan (units KCF/ KCB),with exceptional features in noise level and flow .
ELECTRIC CIRCUIT
The indoor unit electrical panel includes a printed board, which control the operating of the unit, defrosting timer thermostat and system of reversing on heat pump cycle. The unit is controlled from an infrared remote controller.
OPTIONS
OUTDOOR UNIT
•Heating electrical heater.
OUTDOOR UNIT TYPE KJF/KJB
•Supporting with braxkets( depends on units)
•Winter control.
OUTDOOR UNIT TYPE KCF/KCB
•Winter control
•Main switch (depends on models)
•Grille external air
5
SPECIFICATIONS COOLING ONLY
OUTDOOR UNIT WITH AXIAL FAN |
R-407C |
MODEL |
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WING |
WING |
WING |
WING |
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2,8TFK |
3TFK |
4TFK |
5TFK |
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Cooling capacity |
(*) |
W |
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7.350 |
9.500 |
11.600 |
13.500 |
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OUTDOOR UNIT |
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KJF 2,8K |
KJF 3K |
KJF 4K |
KJF 5K |
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COMPRESSOR |
Nª / Type |
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1 / ALT. |
1 / ALT. |
1 / ALT. |
1 / ALT. |
FAN |
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5.100 |
5.400 |
5.400 |
Air flow outdoor unit |
m3/h. |
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3.100 |
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REFRIGERANT |
Type / R-407C |
gr. |
(1) |
1650 |
2500 |
2600 |
2600 |
EXPANSIÓN |
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Capillary |
Capillary |
Capillary |
Capillary |
WEIGHT |
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Kg |
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78 |
85 |
96 |
98 |
DIMENSIONS |
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mm. |
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781 |
1035 |
1035 |
1035 |
Height |
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973 |
973 |
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Width |
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973 |
973 |
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Depth |
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mm. |
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333 |
333 |
333 |
333 |
PACKING DIMENSIONS |
mm. |
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845 x 1060 x 385 |
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1085 x 1275 x 385 |
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REFRIGERANT COUPLING |
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3/8" |
3/8" |
3/8" |
1/2" |
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Liquid pipe |
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Gas pipe |
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5/8" |
3/4" |
3/4" |
3/4" |
INDOOR UNIT |
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LTX 3 |
LTX 3 |
LTX 5 |
LTX 5 |
FAN |
Max. |
1.300 |
1.300 |
2.100 |
2.100 |
Air flow indoor unit |
m3/h. |
1.100 |
1.100 |
1.800 |
1.800 |
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Min. |
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WEIGHT |
Kg |
40 |
40 |
57 |
57 |
DIMENSIONS |
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267 |
267 |
312 |
312 |
Height |
mm. |
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Width |
mm. |
1.409 |
1.409 |
1.719 |
1.719 |
Depth |
mm. |
656 |
656 |
756 |
756 |
PACKING DIMENSIONS |
mm. |
310 x 1430 x 680 |
352 x 1749 x 776 |
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REFRIGERANT COUPLING |
3/8" |
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1/2" |
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Liquid pipe |
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3/8" |
1/2" (2) |
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Gas pipe |
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3/4" |
3/4" (2) |
3/4" |
3/4" |
(*)Air entry temperature into the indoor unit 27°C DB/19 °C WB
(*)Air entry temperature into the outdoor unit 35ºC DB
(1)Charge of refrigerant, factory charged on outdoor unit. See page 22, to calculate model refrigerant charge.
(2)Use the coupling fittings included in indoor unit for refrigerant connection with outdoor unit.
DB.- Dry Bulb
WB.- Wet Bulb
6
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SPECIFICATIONS COOLING ONLY |
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R-407C |
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OUTDOOR UNIT WITH CENTRIFUGAL FAN |
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MODEL |
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WING |
WING |
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WING |
WING |
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2,8CFK |
3CFK |
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4CFK |
5CFK |
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Cooling capacity |
(*) |
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W |
7.180 |
9.100 |
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12.100 |
14.000 |
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OUTDOOR UNIT |
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KCF 2,8K |
KCF 3K |
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KCF 4K |
KCF 5K |
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COMPRESSOR |
Nª / Type |
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1 / ALT. |
1 / ALT. |
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1 / ALT. |
1 / ALT. |
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FAN |
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Air flow outdoor unit |
m3/h. |
2.500 |
2.500 |
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3.400 |
5.000 |
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Available pressure |
Pa |
40 |
40 |
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50 |
50 |
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REFRIGERANT |
Type / R-407C |
gr. (1) |
2255 |
2350 |
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3070 |
4950 |
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|||
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EXPANSIÓN |
|
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|
|
Capillary |
Capillary |
|
Capillary |
Capillary |
||||||||
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||
|
WEIGHT |
|
|
Kg |
89 |
91 |
|
125 |
140 |
|
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|
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DIMENSIONS |
|
|
mm. |
505 |
505 |
|
525 |
575 |
|
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|
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Height |
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Width |
|
|
mm. |
1050 |
1050 |
|
1300 |
1300 |
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Depth |
|
|
mm. |
750 |
750 |
|
855 |
855 |
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PACKING DIMENSIONS |
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||||
|
mm. |
|
630 x 1140 x 850 |
|
|
775 x 1330 x 865 |
|
|||||||||||
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REFRIGERANT COUPLING
Líquid pipe |
|
3/8" |
3/8" |
3/8" |
1/2" |
Gas pipe |
|
5/8" |
3/4" |
3/4" |
3/4" |
INDOOR UNIT |
|
LTX 3 |
LTX 3 |
LTX 5 |
LTX 5 |
FAN |
Max. |
1.300 |
1.300 |
2.100 |
2.100 |
Air flow indoor unit |
m3/h. |
1.100 |
|
|
|
|
Min. |
1.100 |
1.800 |
1.800 |
|
WEIGHT |
Kg |
40 |
40 |
57 |
57 |
DIMENSIONS |
mm. |
|
|
|
|
Height |
267 |
267 |
312 |
312 |
|
Width |
mm. |
1.409 |
1.409 |
1.719 |
1.719 |
Depth |
mm. |
656 |
656 |
756 |
756 |
PACKING DIMENSIONS |
mm. |
310 x 1430 x 680 |
352 x 1749 x 776 |
||
REFRIGERANT COUPLING |
|
|
|
|
|
Líquid pipe |
|
3/8" |
3/8" |
1/2" (2) |
1/2" |
Gas pipe |
|
3/4" (2) |
3/4" |
3/4" |
3/4" |
|
|
(*)Air entry temperature into the indoor unit 27°C DB/19 °C WB
(*)Air entry temperature into the outdoor unit 35ºC DB
(1)Charge of refrigerant, factory charged on outdoor unit. See page 22, to calculate model refrigerant charge.
(2)Use the coupling fittings included in indoor unit for refrigerant connection with outdoor unit.
DB.- Dry Bulb
WB.- Wet Bulb
7
SPECIFICATIONS HEAT PUMP
OUTDOOR UNIT WITH AXIAL FAN |
R-22 |
MODEL |
|
|
|
WING |
WING |
WING |
WING |
|
|
|
2,8TB |
3TB |
4TB |
5TB |
|
Cooling capacity |
(*) |
|
W |
7.350 |
9.250 |
11.600 |
13.700 |
Heating capacity |
(**) |
|
W |
7.800 |
9.000 |
12.100 |
14.600 |
OUTDOOR UNIT |
|
|
KJB 2,8 |
KJB 3 |
KJB 4 |
KJB 5 |
|
COMPRESSOR |
Nª / Type |
|
|
1 / ALT. |
1 / ALT. |
1 / ALT. |
1 / ALT. |
FAN |
|
|
|
|
|
|
|
Air flow outdoor unit |
m3/h. |
|
3.100 |
3.100 |
5.400 |
5.600 |
|
|
|
|
|||||
REFRIGERANT |
Type / R-22 |
gr. |
|
1775 |
2500 |
2800 |
3500 |
EXPANSIÓN |
|
|
|
Capillary |
Capillary |
Capillary |
Restrictor |
WEIGHT |
|
Kg |
|
81 |
83 |
99 |
129 |
DIMENSIONS |
|
mm. |
|
781 |
781 |
1035 |
1330 |
Height |
|
|
|||||
|
|
|
|
|
|
1005 |
|
Width |
|
mm. |
|
973 |
973 |
973 |
|
|
|
|
|
|
|
|
|
Depth |
|
mm. |
|
333 |
333 |
333 |
386 |
PACKING DIMENSIONS |
mm. |
|
845 x 1060 x 385 |
1085 x 1275 |
1495 x 1057 |
||
|
x 385 |
||||||
|
|
|
|
|
|
x 430 |
|
REFRIGERANT COUPLING |
|
|
3/8" |
3/8" |
3/8" |
1/2" |
|
Líquid pipe |
|
|
|
||||
Gas pipe |
|
|
|
5/8" |
3/4" |
3/4" |
3/4" |
INDOOR UNIT |
|
LTX 3 |
LTX 3 |
LTX 5 |
LTX 5 |
|
FAN |
Max. |
1.300 |
1.300 |
2.100 |
2.100 |
|
Air flow indoor unit |
||||||
m3/h. |
|
|
|
|
||
|
Min. |
1.100 |
1.100 |
1.800 |
1.800 |
|
WEIGHT |
Kg |
40 |
40 |
57 |
57 |
|
DIMENSIONS |
mm. |
|
|
|
|
|
Height |
267 |
267 |
312 |
312 |
||
Width |
mm. |
1.409 |
1.409 |
1.719 |
1.719 |
|
|
|
|||||
Depth |
mm. |
656 |
656 |
756 |
756 |
|
PACKING DIMENSIONS |
mm. |
310 x 1430 x 680 |
352 x 1749 x 776 |
|||
REFRIGERANT COUPLING |
|
|
|
|
||
Líquid pipe |
|
3/8" |
3/8" |
1/2" (2) |
1/2" |
|
Gas pipe |
|
3/4" (2) |
3/4" |
3/4" |
3/4" |
|
|
|
(*)Air entry temperature into the indoor unit 27°C DB/19 °C WB
(*)Air entry temperature into the outdoor unit 35ºC DB
(**)Air entry temperature into the indoor unit 20°C DB/12 °C WB
(**)Air entry temperature into the outdoor unit 7ºC DB/6ºCWB
DB.- Dry Bulb
WB.- Wet Bulb
(1)Charge of refrigerant, factory charged on outdoor unit. See page 22, to calculate model refrigerant charge
(2)Use the coupling fittings included in indoor unit for refrigerant connection with outdoor unit..
8
SPECIFICATIONS HEAT PUMP
R-22
OUTDOOR UNIT WITH CENTRIFUGAL FAN
|
|
|
|
MODEL |
|
|
|
|
|
|
|
WING |
WING |
WING |
WING |
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2,8CB |
3CB |
4CB |
5CB |
|
|
|
|||
|
Cooling capacity |
|
(*) |
|
|
|
W |
7.180 |
9.100 |
|
12.100 |
14.000 |
|
|
|
|
|
||||||
|
|
Heating capacity |
|
(**) |
|
|
|
W |
8.150 |
10.220 |
|
13.500 |
17.400 |
|
|
|
|
|
|||||
|
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|
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|
|
OUTDOOR UNIT |
|
|
|
|
|
|
KCB 2,8S |
KCB 3S |
KCB 4S |
KCB 5S |
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
COMPRESSOR |
Nª / Type |
|
|
|
1 / ALT. |
1 / ALT. |
1 / ALT. |
1 / ALT. |
|
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
FAN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
Air flow outdoor unit |
|
|
|
m3/h. |
|
2.500 |
2.500 |
|
3.400 |
5.000 |
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
Available pressure |
|
|
|
Pa |
|
40 |
40 |
|
50 |
50 |
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
REFRIGERANT |
Type / R-22 |
gr. |
(1) |
2425 |
2525 |
|
3400 |
5300 |
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||
|
EXPANSIÓN |
|
|
|
|
|
|
|
Capillary |
Capillary |
Capillary |
Capillary |
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
WEIGHT |
|
|
|
|
Kg |
|
92 |
94 |
|
135 |
150 |
|
|
|
|
|
|||||
|
|
DIMENSIONS |
|
|
|
|
mm. |
|
505 |
505 |
|
525 |
575 |
|
|
|
|
|
|||||
|
|
|
|
|
|
Height |
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Width |
|
|
|
|
mm. |
|
1050 |
1050 |
|
1300 |
1300 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Depth |
|
|
|
|
mm. |
|
750 |
750 |
|
855 |
855 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
mm. |
|
|
|
|
|
|
|
|
|
|
|
|
|
PACKING DIMENSIONS |
|
|
|
|
|
630 x 1140 x 850 |
|
775 x 1330 x 865 |
|
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
REFRIGERANT COUPLING
Líquid pipe |
|
3/8" |
3/8" |
3/8" |
1/2" |
|
Gas pipe |
|
5/8" |
3/4" |
3/4" |
3/4" |
|
INDOOR UNIT |
|
LTX 3 |
LTX 3 |
LTX 5 |
LTX 5 |
|
FAN |
Max. |
1.300 |
1.300 |
2.100 |
2.100 |
|
Air flow indoor unit |
||||||
m3/h. |
|
|
|
|
||
|
Min. |
1.100 |
1.100 |
1.800 |
1.800 |
|
WEIGHT |
Kg |
40 |
40 |
57 |
57 |
|
DIMENSIONS |
|
|
|
|
|
|
Height |
mm. |
267 |
267 |
312 |
312 |
|
Width |
mm. |
1.409 |
1.409 |
1.719 |
1.719 |
|
|
|
|||||
Depth |
mm. |
656 |
656 |
756 |
756 |
|
PACKING DIMENSIONS |
mm. |
310 x 1430 x 680 |
352 x 1749 x 776 |
|||
REFRIGERANT COUPLING |
|
|
|
|
||
Líquid pipe |
|
3/8" |
3/8" |
1/2" (2) |
1/2" |
|
Gas pipe |
|
3/4" (2) |
3/4" |
3/4" |
3/4" |
(*)Air entry temperature into the indoor unit 27°C DB/19 °C WB
(*)Air entry temperature into the outdoor unit 35ºC DB
(**)Air entry temperature into the indoor unit 20°C DB/12 °C WB
(**)Air entry temperature into the outdoor unit 7ºC DB/6ºCWB
DB.- Dry Bulb
WB.- Wet Bulb
(1)Charge of refrigerant, factory charged on outdoor unit. See page 22, to calculate model refrigerant charge
(2)Use the coupling fittings included in indoor unit for refrigerant connection with outdoor unit..
9