Lennox ASC 020S, ASC 045D, ASC 025S, ASC 055D, ASC 070D Installation, Operating And Maintenance Manual

INSTALLATION, OPERATING

AND MAINTENANCE

AIR COOLED CONDENSING UNIT

ASC/ASH

20 - 230 kW

www.lennoxemea.com

MIL152E-1217 01/2019

TABLE OF CONTENTS

ASC/ASH

INSTALLATION
OPERATION
MAINTENANCE MANUAL

POINTS TO BEAR IN MIND

DATA PAGE FOR COMMISSIONING OF THE UNIT

1 -

GENERAL CHARACTERISTICS

1.1 4

Physical data

1.2 5

Electrical data

1.3 6

Fan performance

1.4 6

Operating limits

Piping drawings

1.5 7

Unit dimensions

1.6 11

2 -

INSTALLATION

2.1 12

Preliminary preparations

2.2 12

Unit acceptance

2.3 13

Unit location

2.4 13

Installation clearances

2.5 14

Inside location

2.6 15

Refrigerant connections

2

3

2.7 19

Electrical connections

2.8 21

Dry contact board control

2.9 22

Options installation

3 -

COMMISSIONING AND OPERATION

3.1 23

Preliminary checks before fi rst installation

Preliminary checks at fi rst installation

3.2 24

4 -

MAINTENANCE

4.1 25

Preventive maintenance

4.2 25

Corrective maintenance

4.3 26

Fault diagnosis

WARNING: Read this manual before carrying out installation, repair or maintenance work.

All the technical and technological information contained in this manual, including any drawings 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.

• 1 •

Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

• 2 • Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

POINTS TO BEAR IN MIND

DANGER AND WARNING SIGNS

Abrasive surfaces Low temperatures High temperatures Risk of injury from

moving objects

Electrical voltage Risk of injury from

rotating objects

ELECTRICAL CONNECTIONS

Make sure to switch off the power before installing, repairing or carrying out maintenance on the unit,
in order to prevent serious electrical injury.

Keep local and national legislation in mind when installing 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 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 modifi cations 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 maintenance and management
personnel.
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 manufacturing of these units is made under the requirements of the ISO 9001 and ISO 14001.

• 3 • Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

DATA PAGE FOR UNIT COMMISSIONING

UNIT: ___________________________________________ SERIAL NUMBER : ___________________________________
CONTROL PANEL IDENTIFICATION CODE : _________________________________________________________________
INST ALLA TION ADDRESS: _______________________________________________________________________________
INSTALLER : _____________________________________ INSTALLER TEL : ____________________________________
INST ALLER ADDRESS : __________________________________________________________________________________

______________________________________________________________________________________________________
COMMISSIONING DATE : ________________________________________________________________________________
CHECKS : _____________________________________________________________________________________________

______________________________________________________________________________________________________
SUPPLY VOLTAGE : _______________________________ RATED VOLTAGE OF THE UNIT : _______________________

YES NO

Unit on shock absorbers
Drainage with trap
Main power supply connection
Control panel connection
Compressor oil level indicator

DATA INPUT:

COOLING CYCLE

Air intake temperature to the outdoor
coil:

Air output temperature to the
outdoor coil:

Circuit 1

High pressure:

Circuit 2
Circuit 1

Low pressure:

Circuit 2

ELECTRIC POWER CONSUMPTION (Amps)

Compressor 1: . . . . . . . . . . . . . . . . . . .

Compressor 2 : . . . . . . . . . . . . . . . . . .

Compressor 3 : . . . . . . . . . . . . . . . . . .

Outdoor fan section 1 . . . . . . . . . . . . .

Outdoor fan section 2 . . . . . . . . . . . . .

1ºC
2ºC
1ºC
2ºC

Air intake temperature to the outdoor
coil:

Air output temperature to the
outdoor coil:

High pressure:

Low pressure:

Compressor 1: . . . . . . . . . . . . . . . . .

Compressor 2 : . . . . . . . . . . . . . . . .

Compressor 3 : . . . . . . . . . . . . . . . .

Outdoor fan section 1 . . . . . . . . . . .

Outdoor fan section 2 . . . . . . . . . . .

HEATING CYCLE

1ºC
2ºC
1ºC

2ºC
Circuit 1
Circuit 2
Circuit 1
Circuit 2

Options installed : ____________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
Comments : _________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________

• 4 • Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

1. GENERAL CHARACTERISTICS

1.1.- PHYSICAL DATA

A S C 020 S N M 3 M

Air cooled

condensing unit

S: Outdoor unit Split

C: Cooling only

H: Heat pump

S: One Circuit

D: Two Circuits

Approximate cooling

Type of refrigerant

M: R-410A

- - -

capacity in kW

Units valid for combine with air treatment units

ASC/ADC: Cooling only unit R-410A.
ASH/ADH: Heat pump unit R-410A.

MODELS

Type of compressor Scroll
Number of compressors

Cooling only unit
ASC/ADC

Net weight

Air fl ow m
Refrigerant charge NITROGEN (*)

MODELS

Type of compressor Scroll
Number of compressors

Net weight

Air fl ow m
Refrigerant charge NITROGEN (*)

Heat pump unit
ASH/ADH

Optional Soft starter
Optional FP1

Cooling only unit
ASC/ADC

Heat pump unit
ASH/ADH

Optional Soft starter
Optional FP1

ASC/ASH 020S 025S

255 443 452 520

kg

3

/h

258 452 463 537

3666

6800 9750 11500 11300

ASC/ASH 040S 045D

12222

255 443 452 481 520

kg

3

/h

258 452 463 499 537

36666

11000 9750+9750 11500+11500 11300+11300 11000+11000

1

N/A

055D 070D 085D

N/A

M: 400V/3/50

Number

of revision

030S 035S

n/a: not available

n/a: not available

MODELS

Type of compressor Scroll
Number of compressors

Cooling only unit
ASC/ADC

Net weight

Air fl ow m
Refrigerant charge NITROGEN (*)

Heat pump unit
ASH/ADH

Optional Soft starter
Optional FP1

ASC/ASH 100D 120D

22344

632 797 906 1659 1679

kg

748 828 932 1684 1704

9 9 9 n/a n/a

40 40 40 80 80

3

/h

22700+18100 22700+18100 22700+22700 28600+28600 36000+36000

140D 200D 230D

(*) The units are supplied with nitrogen gas; this must be removed and the unit charged with refrigerant R-410A, depending on unit
model.

(See page

21 to calculate refrigerant charge for model ASC/ADC and ASH/ADH units to work with Air treatment units).

R-410A factory refrigerant precharge kit is available as an option.

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Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

1. GENERAL CHARACTERISTICS

1.2.- ELECTRICAL DATA

ELECTRICAL CONSUMPTION FOR STANDARD UNITS

MODELS
ASC/ASH

Voltage Ph/V/Hz

Maximum absorbed power (kW)

Compressor
Fan
Total power

Maximum current (A)

Compressor
Fan
Total current
Start up current (A)

MODELS
ASC/ASH

Voltage Ph/V/Hz

Maximum absorbed power (kW)

Compressor
Fan
Total power

Maximum current (A)

Compressor
Fan
Total current
Start up current (A)

020S 025S 030S 035S 040S 045D 055D

3N~400V

50Hz

3~400V 50Hz

8,25 10,1 11,8 15,6 16,9 20,2 23,6

0,3 0,69 0,69 0,84 0,84 1,38 1,38

8,55 10,79 12,49 16,44 17,74 21,58 24,98

15 21 22 25,6 31 42 44

1,6 3 3,4 3,4 3,4 6 6,8
16,6 24 25,4 29 34,4 48 50,8
87,5 97,4 104 138 17,2 121 129

070D 085D 100D 120D 140D 200D 230D

3~400V 50Hz

31,1 33,8 42,6 45,6 55,9 78,8 88,2
1,68 1,68 3,05 3,05 4 4,2 8

32,78 35,48 45,65 48,65 59,9 83 96,2

51,2 62 77,6 84 102 142 159

6,8 6,8 6,4 6,4 8 9,6 16

58 68,8 84 90,4 110 151,6 175

167 206 221 228 292 302,9 358

ADDITIONAL ELECTRICAL CONSUMPTION FOR THE OPTIONS

FP1 OPTION
ASC/ASH

Voltage Ph/V/Hz

Maximum absorbed power kW

Maximum current A

Start up current A

100D FP1

(Low Speed/

High speed)

2,00 / 6,20 2,00 / 6,20 1,00 / 5,2 5,8 / 14,2 2 / 10,4

3,2 / 9,8 3,2 / 9,8 1,6 / 8,2 9,6 / 22,8 3,2 / 16,4

3,2 / 9,8 3,2 / 9,8 1,6 / 8,2 9,6 / 22,8 3,2 / 16,4

120D FP1

(Low Speed/

High speed)

140D FP1

(Low Speed/

High speed)

3/400V/50Hz

200D FP1

(Low Speed/

High speed)

230D FP1

(Low Speed/

High speed)

• 6 •

Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

1. GENERAL CHARACTERISTICS

1.3.- FAN PERFORMANCES

1.3.1.- CONDENSING UNIT WITH AVAILABLE HIGH PRESSURE FAN (OPTION)

Air fl ow data / FP1 option / Low speed.

MODELS

Fan type
Fan number

Airfl ow rate m3/h

50

Absorbed power kW
Airfl ow rate m3/h

75

Absorbed power kW

(Pa)

Airfl ow rate m3/h

100

Absorbed power kW
Airfl ow rate m

Available static pressure

125

Absorbed power kW

Air fl ow data. FP1 option. High speed.

MODELS

Fan type
Fan number

Airfl ow rate m3/h

50

Absorbed power kW
Airfl ow rate m

100

sure Pa,

Available static pres-

Absorbed power kW
Airfl ow rate m

125

Absorbed power kW

100D - 120D - 140D 200D 230D

Axial “short case” - direct coupling

900 r.p.m. (Low speed) 3~400V

24

19000 + 19000 28000 + 28000

510

18000 + 18000 24000 + 24000

5,1 10.2

17000 + 17000 22000 + 22000 N/A

5,2 10,4 N/A

3

/h

15000 + 15000 20000 + 20000 N/A

5,3 10,6 N/A

100D - 120D - 140D 200D - 230D

Axial “short case”-direct coupling

1450 r.p.m. (High speed) 3~400V

24

22000 + 22000 34000 + 34000

9,2 18,4

3

/h

20000 + 20000 28000 + 28000

9,3 18,6

3

/h

18000 + 18000 24000 + 24000

9,4 18,8

n/a: Not available

1.4.- OPERATING LIMITS (For installation with air treatment units. Example)

COOLING ONL Y UNITS

Cooling cycle operation

HEAT PUMP UNITS

Cooling cycle operation

Heating cycle operation

(*)

With low temperature 0ºC kit (option)

Indoor temperature

Outdoor temperature

Indoor temperature

Outdoor temperature

Indoor temperature

Outdoor temperature

Maximum temperatures Minimum temperatures

32ºC DB

23ºC WB

(20S-25S-30S-45D-55D)

(35S-40S-70D-85D-100D-120D-140D)

45ºC

------------­47ºC

Maximum temperatures Minimum temperatures

32ºC DB

23ºC WB

20S-25S-30S-45D-55D)

-------------

(35S-40S-70D-85D-100D-120D-140D)

(See tables for heating capacities)

47ºC

27ºC DB

Depending on model

DB:

Dry bulb temperature.

21ºC DB

15ºC WB

+10ºC STANDARD UNIT

(*) / (**)

21ºC DB

15ºC WB

0ºC

15ºC DB

-10ºC DB

-11ºC WB

• 7 •

(**)

With option kit low temperature -15ºC or kit -15ºC and low noise level.

Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

WB:

Wet bulb temperature

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

COOLING ONLY UNITS

AIR TREATMENT UNIT. EXAMPLE CONDENSING UNIT

ASC 020S/025S/030S/035S/040S

DS

Fan

Coil

Expansion valve

(ELEMENTO OPCIONAL)

OPTION ELEMENT

AIR TREATMENT UNIT. EXAMPLE

Fan

Filter drier

Service valve option

C1

SVL1

Service valve option

Service valve

option

C1

Scroll compressor

LPT1

LP1

CH1

HP1

Suction accumulator (long distance connection option).

CONDENSING UNIT

ASC 045D/055D/070D/085D

LPT1

Scroll compressor

LP1

CH1

Suction accumulator (long distance connec­tion option).

HP1

Fan motor

HPT1

PT1

Coil

Fan motor

PT1

HPT1

Coil

DS

055D/070D/085D

Coil

Expansion

valve

Filter drier

SVL1

Service valve option

Service valve

option

LP2

LPT2

Scroll compressor

CH3

Suction accumulator ( long distance connec-

C2

SVL3

Expansion valve

OPTION ELEMENT

(ELEMENTO OPCIONAL)

Filter drier

Pressure gauge (5/16” to be fi tted by the installer) High pressure switch, circuit 1
Discharge sensor High pressure switch, circuit 2

DS HP2
SVL1 CH1

Liquid solenoid valve. (long distance option)
To be connected by the installer to air treatment unit.

SVL3 CH3

Low pressure switch, circuit 1 High pressure transducer, circuit 1

LPT1 HPT1

Low pressure transducer, circuit 2 High pressure transducer, circuit 2

LPT2 HPT2

tion option).

Service valve option

HP1

Crankcase heater (Low ambient option)
Crankcase heater (Low ambient option)

Outdoor temperature sensor

OS

Fan motor

HP2

PT2

HPT2

OS

Coil

• 8 •

Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

COOLING ONLY UNITS

AIR TREATMENT UNIT. EXAMPLE

Coil

Fan

Expansion valve

Coil

Filter drier

CONDENSING UNIT

ASC 100D/120D/140D

LPT1

Service valve

option

C1

Suction accumulator (Low ambient

-15ºC and low noise level option).

Service valve option

LPT2

Service valve

option

C2

Scroll compressor

1

CH

Scroll compressor

2

CH

Scroll compressor

3

CH

Suction accumulator (Low ambient -15ºC and
low noise level option).

HPT1

HPT2

Fan motor

Coil

Fan motor

Coil

Expansion valve

Filter drier

Service valve option

OPTION ELEMENT

Pressure gauge. (5/16” to be fi tted by the installer) High pressure switch, circuit 1.

Discharge sensor High pressure switch, circuit 2.

DS HP2

SVL1 CH...

Liquid solenoid valve. (long distance option)
To be connected by the installer to air treatment unit.

SVL3 HPT1

Low pressure switch, circuit 1 High pressure transducer, circuit 2

LPT1 HPT2

HP1

Crankcase heater (Low ambient option)

High pressure transducer, circuit 1

Low pressure transducer, circuit 2 Outdoor temperature sensor

LPT2 OS

• 9 •

Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019