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.

• 5 •

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

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

COOLING ONLY UNITS

CONDENSING UNIT

ASC 200-230D

Service valve

(option)

C1

Service valve

(option)

Service valve

(option)

C2

Scroll compressor

LPT1

LPT2

Fan motor

HP1

CH1

CH2

HP2

CH3

CH4

HPT1

Coil

Fan motor

HPT2

Coil

Service valve

(option)

OPTION ELEMENT

Pressure gauge (5/16” to be fi tted by the installer) Crankcase heater (0°C Low ambient option)

Low pressure switch

LPT1 HPT1

Circuit 1
Low pressure switch

LPT2 HPT2

Circuit 2
High pressure switch

HP1 OS

Circuit 1
High pressure switch

HP2

Circuit 2

CH...

High pressure transducer
Circuit 1

High pressure transucer
Circuit 2

Outdoor temperature sensor

• 10 •

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

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

HEAT PUMP UNITS

AIR TREATMENT UNIT. EXAMPLE

CONDENSING UNIT

ASH 020S/025S/030S/035S/040S

DS

Fan

Coil

Expansion valve

Check valve Check valve

(ELEMENTO OPCIONAL)

OPTION ELEMENT

AIR TREATMENT UNIT. EXAMPLE

Fan

Filter
drier

LPT1

LP1 HP1

option

Scroll compressor

Service valve

C1

SVL1 SVL2

Service valve option

Check valve

CONDENSING UNIT

ASH 045/055D/070D/085D

Service valve option

C1

Scroll compressor

LP1 HP1 PT1

LPT1

H1

C

Suction accumulator (Long
distance connection option)

1

H

C

Suction accumulator

(Remote connection option)

Filter drier

Check valve

4-way valve

4-way
valve

Expansion valve

HPT1

PT1

Suction accu­mulator

HPT1

Fan motor

Coil

OS

Fan motor

Coil

DS

Expansion

Coil

64D/76D/86D

Filter
drier

valve

Check valve Check valve

Check valve

SVL1

Service val-

ve option

LP2

LPT2

SVL2

Filter drier

Scroll compressor

3

H

C

Check valve

HP2

Service valve option

C2

Service valve

option

SVL3 SVL4

Check valve

HP1

HPT2

valve

Filter
drier

Expansion

Check valve Check valve

(ELEMENTO OPCIONAL)

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
SVL2

Liquid solenoid valve (long distance option) High pressure transducer, circuit 2

SVL4

Low pressure switch, circuit 1 Outdoor temperature sensor

LPT1 OS

Low pressure transducer, circuit 2

LPT2

Suction accumulator (Long
distance connection option)

Filter drier

Crankcase heater
High pressure transducer, circuit 1

Expansion valve

4-way valve

Expansion
valve

Check valve

Suction accumulator

Fan motor

HPT2

PT2

Suction accumu­lator

OS

Coil

• 11 •

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

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

HEAT PUMP UNITS

AIR TREATMENT UNIT. EXAMPLE

UNIDAD INTERIOR
CIH 100D/120D/140D

DS

Fan

Coil

Expansion
valve

Check valve

DS

Coil

Fan

Expansion valve

Check valve

OPTIONAL ELEMENT

Filter drier

Liquid receiver

Check valve

Filter drier

112D/128D

C1

SVL1

Check

valve

C2

SVL3

Check

valve

CONDENSING UNIT

UNIDAD EXTERIOR
ASH 100D/120D/140D

Scroll compressor

option

Service valve

C

C

Scroll compres-

ve option

Service val-

SVL2

Check valve

option

Service valve

Service valve

option

Scroll compressor

C

SVL4

Check valve

1

H

2

H

3

H

sor

(Long distance connection

Filter

drier

Expansion valve

Check valve

Suction accumulator (Long

distance connection option)

Filter drier

Expansion valve

Check valve

4-way valve

Suction accumulator

option)

Suction accu­mulator

4-way valve

Suction accumulator

Fan motor

HPT1LPT1

PT1LP1

Coil

Fan motor

HPT2LPT2

PT2LP2

OS

Coil

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
SVL2

Liquid solenoid valve. (long distance option) High pressure transducer, circuit 2

SVL4

Low pressure switch, circuit 1 Outdoor temperature sensor

LPT1 OS

Low pressure transducer, circuit 2

LPT2

• 12 •

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

HP1

Crankcase heater
High pressure transducer, circuit 1

HPT2

1. GENERAL CHARACTERISTICS

1.5.- PIPING DRAWINGS

HEAT PUMP UNITS

CONDENSING UNIT

ASH 200-230D

Service valve

(option)

Scroll compressor

Fan motor

C1

Service valve

(option)

Service valve

(option)

C2

LPT1

Scroll compressor

Scroll compressor

LPT2

Scroll compressor

CH1

CH2

CH3

CH4

Check valve

Filter drier

Check valve

HP1 HPT1

4-way valve

Suction accumulator

Expansion valve

HP2

4-way valve

HPT2

Coil

Fan motor

Coil

Service valve

(option)

OPTIONAL ELEMENT

Filter drier

Check valve

Pressure gauge (5/16” to be fi tted by the installer) Crankcase heater (0°C Low ambient option)

Low pressure switch

LPT1 HPT1

Circuit 1
Low pressure switch

LPT2 HPT2

Circuit 2
High pressure switch

HP1 OS

Circuit 1
High pressure switch

HP2

Circuit 2

• 13 •

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

Suction accumulator

Expansion valve

CH...

High pressure transducer
Circuit 1

High pressure transucer
Circuit 2

Outdoor temperature sensor

1. GENERAL CHARACTERISTICS

1.6.- DIMENSIONS OF ASC/ASH/ADC/ADH UNIT

1195

Main switch

(optional)

020S

660

Main switch
(option)

Electrical box

1375

Power supply cable
entry

Access to gas and liquid

lines

025S/030S/035S/040S

1

1

9

5

8

9

1635

0

Electrical box

045D/055D/070D/085D 100D/120D/140D

Main switch

(optional)

Electrical box

Main switch
(optional)

Access to gas and
liquid lines

Electrical box

Access to gas and

liquid lines

Access to gas and liquid lines

1960

Power supply

Main switch

Electrical box

(optional)

1195

2250

1635

Access to gas and

200D-230D

2128

2250

1420

liquid lines

Power supply

2227

2300

• 14 •

Power supply

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

Access to gas and liquid lines

2. INSTALLATION

2.1.- PRELIMINARY PREPATATIONS

All INSTALLATION, SERVICE and MAINTENANCE work must be carried out by QUALIFIED

PERSONNEL.

The unit must be transported in a VERTICAL POSITION on its metal mounting frame. Any other position may cause
serious damage to the machine. When the unit is received, it should be checked to assure that it has received no shocks
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 stating why the machine is unacceptable on the transport agent’s delivery
note. Any later complaint or claim made to the LENNOX Distribution Department for this type of damage cannot be
considered under the Guarantee.
Suffi cient space must be allowed to facilitate installation of the unit.
The unit may be mounted outdoors. When the unit is mounted on the fl oor, ensure that the position is not subject
to fl ooding.

When positioning the unit, be sure that the Rating Plate is always visible since this data will be
necessary to ensure correct maintenance.

The units are designed to be installed with ducts designed by qualifi ed technical staff. The joints to be used between
ducts and openings in the unit should be Elastic Joints. Avoid the use of BYPASS joints between the extraction air
and input air. The structure where the unit is placed must be able to support the weight of the unit during operation.

2.2.- UNIT RECEPTION

How to hoist the unit

WITH HOOK

Crane

Use separators

Hook

Sling 6 m

Use separators

WITH BALANCE BEAM

Crane

Balance

beam

Sling

NOTE:

Use slingers of 6 m with the hook
in order to prevent pressure on the
top of the unit because it can be
damaged.Whenever it is possible,
use balance beam.

Hooker

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

2. INSTALLATION

2.3.- UNIT LOCATION

- The bedplate is made up of metal sections, capable of withstanding the weight of the unit.

- If the unit is fl oor mounted, then the profi les should be isolated with shock absorbing material such as anti-vibration units or pads.
Bear in mind that the fans rotate at approximately 850 rpm.

- The unit is able to work in normal radio interference conditions for commercial and residential installations. For any other conditions
please consult us.

- If the outside temperature in the area where the heat pump unit is to be installed is low or the operating cycle is too long, it may be
necessary to install an electrical heater in the drip tray , to prevent the formation of ice in the coil during the defrost cycle.

1. Mounting on a low sensitivity area.

Unit

Rubber mounting

2. Mounting on a medium sensitivity
area.

Unit

Damping spring

Metal and concrete structure
Support

Rubber mounting

3. Mounting on a high sensitivity area
(Check fl oor loading).

Unit

Metal and concrete structure

Support

Damping spring

Rubber mounting

2.4.- INSTALLATION CLEARANCES

FAILURE TO INSTALL THE UNITS AS SHOWN WILL IMPACT PERFORMANCE AND RELIABILITY.

INSTALLATION CLEARANCES DETAILING AVM POSITIONS

1195
1145

3m (*)

1m (*)

1m (*)

1

m

1m (*)

1m (*)

ASC/ASH 020S

660

400

O14

130

25

• 16 •

3 m

1 m

1 m

1 m

1 m

1 m

3 m

1 m

1 m

ASC/ASH 025S/030S/035S/040S

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

1195
1145

980

800

800

1195

955

O14

1960

90

25

955

O14

90

25

Size in mm.(*) Clearance around the unit.

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

2. INSTALLATION

INSTALLATION CLEARANCES DETAILING AVM POSITIONS

2250

ASC/ASH 100D/120D/140D

965

682

1420

682

965

14

28

160

(*) Clearance around the unit.

2.5.- INDOOR LOCATION

Air outlet

Air outlet duct (2)

Unit

ASC/ASH 200D/230D

2300

752

784

696

675 700

675

675

14

700 675

2250

100

34

Size in mm.

Air inlet

Auxiliary drip tray
(heat pump unit)

In heat pump units with double circuits and cooling units
100D-140D only, if only one duct is going to be installed, a

Air inlet duct (1)

regulated pressure damper should be installed for each fan, to
avoid air by-pass through the fan if it has stopped.

For inside location, keep the following advice in mind:

- During the heat pump defrost cycle, the units produce a large quantity of melted water. If you wish to drain this water, adequate
drainage should be installed below the unit to collect and lead the water to the desired location.

- Air duct installation:

If an air duct has been installed, the operating limits will be reduced (see operating limits section in this manual).
(1) The air intake plenum (option) available for models 100D-140D facilitates the installation of the air intake duct.
(2) The discharge plenum (option) permits the installation of a square discharge duct with options FP1.

• 17 •

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

2. INSTALLATION

2.6- REFRIGERANT CONNECTIONS

The unit is supplied with the gas and liquid lines sealed with copper caps out­side the casing with possibility to install pipe lines (unless the unit is supplied

Copper cap

Refrigerant pipe

lines

with the factory precharged refrigerant kit (option) or service valves kit (option).

Brazing

Standard units are fi lled with Nitrogen gas, which must be removed before any operation on the unit.

As an option, the unit can be supplied with service valves on the gas and liquid lines, with Nitrogen charge
(N

) or refrigerant charge (R-410A).

2

FOR STANDARD UNITS AND UNITS SUPPLIED WITH SERVICE VALVES PROCEED AS FOLLOW:

1. Remove the nitrogen gas through the high and low 5/16” service ports located inside and provide a low vacuum for safety.

2. Remove the caps from the connecting lines.

3. Braze the piping connection lines. Select piping diameter from TABLE 1.
(When brazing refrigerant pipes, nitrogen gas must be supplied into the pipes through the service ports to remove the air).

4. Leak test:
Add nitrogen gas, check that a pressure of 5 kg/cm2 has been reached and that there are no leaks in the circuit or brazing
by applying soapy water to the pipes which will cause the bubbles to form where there are leaks.
To detect small leaks, proceed as follows:

Add nitrogen gas and check that a pressure of 25 kg/cm2 has been reached, there are no leaks if the pressure remains the
same for at least 24 hours and the fi nal pressure is not less than 10% below the initial pressure.

5. Ensure that the gas line is insulated.

6. Evacuation:
Remove the nitrogen gas, connect the gauge manifold and vacuum pump to both the liquid and gas lines, fully open the gauge
manifold valve and switch on the vacuum pump. Check to make sure the gauge shows a pressure of -750mm Hg. Once a level
of -750mm Hg is reached, keep the vacuum pump running for at least one hour.

7. Refrigerant charge:

- Check TABLE 3.1. and 3.2. for the amount of refrigerant charge, depending on the length and size of the pipe connections.

- Disconnect the vacuum pump and connect to the refrigerant-charging bottle. Open the charging pump and purge the air from

the hose at the pressure gauge manifold.

- Set up the amount of additional refrigerant on the weighing scale, open the high pressure and charged in the liquid state. If

the total amount of refrigerant charge has not been reached because the pressure is balanced, turn off the high side of the
gauge manifold, turn on the unit, and add the remaining amount of the refrigerant charge required slowly through the low side
of the pressure gauge. (With R-410A refrigerant, the charging bottle must be in a vertical position and charged in the liquid
state). Close the pressure gauge, disconnect it from the from the service port of the unit and fi t caps on the service ports. The
unit is then ready to operate.

During installation, keep the gas and liquid pipes covered, in order to prevent humidity and dirt from entering
them.
Take special care that the refrigerant pipes are insulated.
Avoid collapse on lines installation.

FOR UNITS SUPPLIED WITH SERVICE VALVES AND FACTORY PRECHARGED REFRIGERANT KIT, PROCEED AS FOLLOWS:

1. Release the refrigerant pressure from the connecting line through the service
port located in that line.

2. Remove the caps from the connecting lines.

3. Braze the interconnection line to the indoor unit.

4. With the service ports closed, evacuate and connect the vacuum pump to the
5/16” service port on the connecting line to achieve a pressure of -750 mm
Hg; after that, keep the vacuum pump running for at least one hour in order to
provide a vacuum to the connecting lines and the indoor unit. Disconnect the
vacuum pump.

5. Refrigerant charge:

To the indoor

Copper cap

unit

Service port

Copper tube to connect to
indoor unit

Service valve

To outdoor
unit piping

Remove vacuum pump and connect the refrigerant bottle. Check TABLE 2 for

refrigerant charge per meter of copper pipe for the corresponding model.

Adjust the amount of refrigerant on the weighting scale and open the pressure gauge to charge in liquid state (with R-410A

refrigerant, the charging bottle must be in a vertical position and it is important to charge in the liquid state).

Close the pressure gauge, disconnect it from the service port of the unit and fi t the caps.

6. Open the service valves.

7. The unit is ready to operate.

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

2. INSTALLATION

2.6- REFRIGERANT CONNECTIONS

To locate outdoor and indoor units, refer to the following information:

OUTDOOR UNIT

2%

POSITION A: A siphon suction must be installed in the vertical part of the gas line,

2

A

1

and siphons must be installed every 8 meters in the rising section. The minimum
suction speed must not be below 6m/s. Maximum vertical length 16m.

L

INDOOR UNIT

INDOOR UNIT

OUTDOOR UNIT

2%

OUTDOOR UNIT

B

2%

2

L

2%

INDOOR UNIT

2

1

POSITION B: Slope the lines toward the outdoor unit. Take special
care with lines longer than 10, and avoid collapse.

1

POSITION C: Install a siphon at the base of the vertical of the gas line,
no more siphons are necessary . Maximum vertical length 16 m.

A, B, C :

L

C

L :
1 =
2 =

Unit positions
Total length
Gas line
Liquid line

2%

NOTE: The units are supplied with welded connections. As an option,
service valves are available for liquid and gas lines.

- GAS LINES MUST ALWAYS BE INSULATED.

- THE HORIZONTAL LINES MUST SLOPE AT LEAST 2% TOWARDS THE OUTDOOR UNIT.

- THE MAXIMUM SPEED IN THE LINES, SHOULD NOT BE MORE THAN 15 m/sec.

Legislation does not allow refrigerant gas emissions to the atmosphere, so the refrigerants have to be recycled to
avoid being released to the atmosphere. Those recycled refrigerants shall be processed afterwards by an authorized
waste manager.
Those components derived from the recycling of the unit have to be managed by authorized waste manager or be left
in local waste facilities according the local normative in each country.

• 19 •

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

2. INSTALLATION

2.6- REFRIGERANT CONNECTIONS

For units with 2 circuits, please be sure to connect indoor unit circuits C1 and C2 to the corresponding C1 and C2
circuits of the outdoor unit.

Note :

MODELS 100D and 120D USE DIFFERENT SIZES OF PIPE CONNECTIONS : LARGE SIZE FOR CIRCUIT 1 AND
SMALL SIZE FOR CIRCUIT 2.

TABLE 1: REFRIGERANT LINES SELECTION

Total line length.

(Length refri-

gerant lines

between indoor

unit and outdoor

unit.)

Total line length.

(Length refri-

gerant lines

between indoor

unit and outdoor

unit.)

REFRIGERANT LINES

Ø Liquid

0 to 30 m.
(Standard con­nection of unit)

30 to 65 m.

0 to 30 m.
(Standard con­nection of unit)

30 to 65 m.

Ø Gas

Max. nr of bends

Ø Liquid

Ø Gas

Max. nr of bends

Ø Liquid

Ø Gas

Max. nr of bends

Ø Liquid

Ø Gas

Sizes

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

C1 1/2” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8”
C2 n/a n/a n/a n/a n/a 5/8” 5/8”
C1 7/8” 1 1/8” 1 1/8” 1 3/8” 1 3/8” 1 1/8” 1 1/8”
C2 n/a n/a n/a n/a n/a 1 1/8” 1 1/8”

6 12 8 18 12 12 8

C1 5/8” 5/8” 5/8” 3/4” 3/4” 5/8” 5/8”
C2 n/a n/a n/a n/a n/a 5/8” 5/8”
C1 1 1/8” 1 1/8” 1 3/8” 1 3/8” 1 5/8” 1 1/8” 1 3/8”
C2 n/a n/a n/a n/a n/a 1 1/8” 1 3/8”

12 18 18 18 18 18 18

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

C1 5/8” 5/8” 3/4” 3/4” 3/4” 7/8” 7/8”
C2 5/8” 5/8” 5/8” 5/8” 3/4” 7/8” 7/8”
C1 1 3/8” 1 3/8” 1 5/8” 1 5/8” 1 5/8” 1 5/8” 2 1/8”
C2 1 3/8” 1 3/8” 1 3/8” 1 3/8” 1 5/8” 1 5/8” 2 1/8”

18 12 12 12 12 12 12

C1 3/4” 3/4” 7/8” 7/8” 7/8” n/a n/a
C2 3/4” 3/4” 3/4” 3/4” 7/8” n/a n/a
C1 1 3/8” 1 5/8” 1 5/8” 1 5/8” 1 5/8” n/a n/a
C2 1 3/8” 1 5/8” 1 5/8” 1 5/8” 1 5/8” n/a n/a

Max. nr of bends

18 18 12 12 12 n/a n/a

n/a: not available

With lines length between 40 and 65 m, long distance option must be selected.

Units are factory pre-charged with Nitrogen (N2).
The installer should remove the nitrogen and charge the units with the R-410A refrigerant shown in the following
tables and also the charge per meter of line shown in TABLE 2.

The unit is supplied as standard with brazed connections. A factory pre-charged kit is available as an option. If fi tted, TABLE 2 is the
only one to take into account (this option includes service valves).

TABLE 2: WEIGHT OF R-410A REFRIGERANT PER METER OF LINE

g/m

LIQUID GAS

1/2” 7/8” 108
5/8” 1-1/8” 177
5/8” 1-3/8” 182
3/4” 1-3/8” 265
3/4” 1-5/8” 271
7/8” 1-5/8” 374

• 20 •

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

2. INSTALLATION

2.6- REFRIGERANT CONNECTIONS

TABLE 3.1 : REFRIGERANT CHARGE

Charge of refrigerant (gr) R-410A for 0 meters of line (Cooling only) ASC + Air T. Unit

020S 025S 030S 035S 040S 045D 055D 070D 085D 100D 120D 140D 200D 230D

C1

5155 5315 5700 7950 9745 6250 5775 7870 9800 12130 15585 15500 23100 24250

C2

------ ------ ------ ------ ------ 6250 5775 7870 9800 10450 10045 15400 23100 24250

Charge of refrigerant (gr) R-410A for 0 meters of line (Heat pump) ASH + Air T. Unit

020S 025S 030S 035S 040S 045D 055D 070D 085D 100D 120D 140D 200D 230D

C1

5725 5900 6330 8835 10830 6940 6420 8740 10900 13480 17315 17230 25660 26950

C2

------ ------ ------ ------ ------ 6940 6420 8740 10900 11600 11160 17100 25660 26950

Note :

MODELS 100D and 120D USE DIFFERENT SIZES OF PIPE CONNECTIONS : LARGE SIZE FOR CIRCUIT 1 AND
SMALL SIZE FOR CIRCUIT 2.

REFRIGERANT CHARGE FOR THE SET:

EXAMPLE:
To install a ASH 030S + Air treatment unit, with 22 m refrigerant line length between the condensing and Air treatment unit,

the refrigerant charge must be calculated as follows:
1 TABLE 1 (p. 20) shows that for 22m of line length between the condensing and Air treatment unit, the line sizes are: liquid 5/8”

and gas 1 1/8”.
TABLE 2 (p. 20) shows, for line sizes of 5/8”-1 1/8”, the charge per meter of line is: 177 g/m x 22m = 3894 g.

2
3 TABLE 3.1 shows charge of refrigerant for a set with 0m line length is: 6330 g.
4 To determine the charge of the set:

Add the charge in the refrigerant lines + the charge in the Air treatment unit and condensing refrigerant units.

Total charge for the set: 3894 + 6330 = 10224 g

Note: If the condensing unit includes the factory pre-charged kit, only the weight of refrigerant per meter of line in TABLE 2 is taken
into account.

100D to 140D units with 3 compressors are working using three capacity steps and 200D-230D with 4 capacity steps.
See the picture below for the installation in the case of units with tandem compressor circuit. An additional gas line has to be used
to assure the correct operation of the system.

Condensing unit with capacity reduction

Tandem compressor circuit

4

Min 0.25% gradient

2

H1

15 m max

H1

5 m max

H2

0,15 m min

H4

Coupled trap

2

Lower trap with double tubes

3

Higher trap with double tubes

4

23

H4

4

H4

• 21 •

H2

Indoor unit

3

100D 120D 140D 200D 230D

Circuit 1 Circuit 1 Circuit 1 Circuits 1 & 2 Circuits 1 & 2

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

Models with tandem compressor

2. INSTALLATION

2.7.- ELECTRICAL CONNECTIONS

- BEFORE MAKING ANY ELECTRICAL CONNECTIONS, ENSURE THAT ALL CIRCUIT BREAKERS ARE OPEN.

- IN ORDER TO MAKE THE ELECTRICAL CONNECTIONS, FOLLOW THE ELECTRICAL DIAGRAM SUPPLIED WITH THE
UNIT.

INDOOR SECTION

RS

CO2

AS

AS

HR/T

HR/T

RS

Air treatment unit. Example

DS

DADS

BAC

LDRP

DPT

DIFS

5

6

4

3

2

AS
OS

OS

HR/T

Note: The length of all cables for connection with indoor unit
must be less than 65 m.

CONNECTION OF CONTROL ELEMENTS:

COMPONENT

DS
OS
AS
RS

RS HR/T

CO2

DPT

OS HR/T

AS HRT

Discharge sensor
Outdoor sensor STANDARD
Remote ambient sensor
Remote duct sensor

Duct remote sensor for enthalpic free-cooling 6G x 1 mm² (shielded)
CO2 Air quality probe. (Available only with enthalpic

free-cooling)
Air differential pressure transducer 3 x 1 mm² (shielded)

Outdoor sensor for enthalpic free-cooling 5 x 1 mm² (shielded)

Remote ambient sensor for enthalpic free-cooling 6G x 1 mm² (shielded)

Electrical box

PT1
PT2

Split unit

STANDARD

OPTION

1

OUTDOOR SECTION

Condensing

unit

N/A

N/A

To connect by installer

2 x 1 mm² (shielded)

4 x 1 mm² (shielded)

DIFS

LDRP

DADS
BAC

Dirty fi lter sensor 2 x 1,5 mm²

Long distance connection

Smoke detector 7 x 1,5 mm²
Hot water coil 5 x 1,5 mm²

VOLTAGE OPERATING LIMITS: 342-462V

• 22 •

3 x 1,5 mm² (units 1 circuit)

2 x (3 x 1,5 mm²) (units 2 circuits)

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

2. INSTALLATION

2.7.- ELECTRICAL CONNECTIONS

POWER SUPPLY

Power supply

11’ 2 456

020S 5G x 4 mm² 5G x 16 mm²

Power supply with

electrical heater

Power supply

Fan Free-cooling Exhaust fan Return fan

025S

030S

035S

040S

045D

055D

085D

100D

140D

200D

230D

4G x 6 mm² 4G x 16 mm²

4G x 1,5 mm²

(STD/HP1) & (HP2/HP3)

4G x10 mm²

4G x 16 mm²

3 x 35 mm² +

1 x 16 mm²

3 x 50 mm² +

1 x 25 mm²

6G x 1,5 mm² 4G x 1,5 mm²

4G x 1,5 mm² (STD/HP1)

3 x 25 mm² +

1 x 16 mm²

3 x 50 mm²
1 x 25 mm²

3 x 70 mm² +

1 x 35 mm²

3 x 95 mm² +

1 x 50 mm²

Standard - ELHS Medium - ELHM High - ELHH Modulating - EHHM

3 x 70 mm² +

1 x 35 mm²

3 x 95 mm² +

1 x 50 mm²

N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A

4G x 2,5 mm² (HP2/HP3)

4G x 2,5 mm² (STD/HP1)

2 x (4G x 1,5 mm²) (HP2/HP3)

Power supply

Electrical heater (3)

N/A

4G x 1,5 mm²070D

4G x 2,5 mm²120D

n/a: not available

020S

025S

030S

035S

040S

4G x 2,5 mm² +

6G x 1,5 mm²

4G x 6 mm² +

6G x 1,5 mm²

4G x 6 mm² +
6G x 1,5 mm²

4G x 10 mm² +

6G x 1,5 mm²

4G x 10 mm² +

7G x 1,5 mm²

045S

055D

070D

085D

100D

4G x 10 mm² +

6G x 1,5 mm²

4G x 10 mm² +

6G x 1,5 mm²

4G x 25 mm² +

6G x 1,5 mm²

4G x 25 mm² +

7G x 1,5 mm²

120D

140D

200D N/A N/A N/A N/A

230D

N/A N/A N/A N/A

• 23 •

n/a: not available

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

2. INSTALLATION

2.7.- ELECTRICAL CONNECTIONS

COMFORT AND SERVICE TERMINAL CONNECTION

2.8.- DRY CONTACT BOARD CONTROL

The AIRCOOLAIR condensing unit can be remotely controlled via dry contacts on the BM60 and BE60.
The expansion board BE60 is an additional board fi xed on DIN rail. This board is supplied in stand on AIRCOOLAIR condensing
unit.

Description of the various connectors :

1 Power supply of the board
2 Analog output 0/10V : not used
3 Network bus to the CLIMATIC 60 BM60
4 4 digital inputs : dry contacts only
5 LED status of the network bus
6 Serial address dip-switch of the network bus
7 4 analog input confi gurable by pair B1-B2 and B3-B4
8 4 digital outputs : dry contact only

6 digital inputs are dry contacts. They are factory confi gured as follow :

2 inputs on the BM60

• BM-J4-ID4 : TCB B = Cooling/Heating - Contact closed = the unit operates in heating mode and open contact = the unit opera­tes in cooling mode

• BM-J4-ID7 : TCB G = On/Off - Contact closed = On.

4 inputs on the BE60

• BE-J4-ID1 : TCB Y1 = 50% power engaged when the contact is closed

• BE-J4-ID2 : TCB Y2 = 100% power engaged when the contact is closed

• BE-J4-ID3 : Available

• BE-J4-ID4 : Available

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

2. INSTALLATION2. INSTALLATION

2.9 - OPTIONS INSTALLATION

COMMUNICATION CAPABILITIES

1. BMS MODBUS_RS485 or TCP/IP connection.

2. BMS LONWORKS_Echelon connection.

3. BMS BACnet - RS485 or TCP/IP connection.

BM60

SERIAL CARD SERIAL CARD SERIAL CARD SERIAL CARD

CH1

BM60 BM60 BM60

CH2

CH3

MODBUS

LON WORKS FTT 10A

BACNET

230V

Cable c. section (mm2)
two wire S12E racing
from min. 0.2 a max. 2.5 mm
AWG 20/22
1000m. max.

RS485

RS232

BMS

2

SERIAL CARD

Connect a 120  1/4 W ter­minating resistor, MODBUS

only.

LON WORKS FTT 10A

BM60

CH4

MODBUS
BACNET

A master-slave connection is possible :

SERIAL

BM60

CARD

J11 J10

LAN

Cable c. section (mm²)

3 shielded pairs

AWG24

500 m max.

C

B

DC60

DC60

A

DT50

DS60

SERIAL

RT1

CARD

Cable c. section (mm²)

3 shielded pairs

AWG24

500 m max.

A

DT50

DS60

B

BM60

J11 J10

C

Cable c. section (mm²)

DC60

SERIAL

RT2

3 shielded pairs

AWG24

500 m max.

Cable c. section (mm²)

3 shielded pairs

AWG24

500 m max.

A

DT50

DS60

CARD

B

BM60

J11 J10

C

DC60

SERIAL

RT3

Cable c. section (mm²)

3 shielded pairs

AWG24

500 m max.

A

DT50

DS60

CARD

B

BM60

J11 J10

C

RT12

• 25 •

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

3. COMMISSIONING AND OPERATION

3.1.- PRELIMINARY CHECKS BEFORE STARTUP

- Check that the power supply is the same as stated on the Rating Plate which is in agreement with the electrical diagram for
the unit and that cable sizes are correct.

- Check that tightness of the electrical connections to their terminals and to ground.

- Check the control panel connections.

(If the connection is incorrect, the unit will not operate and the control panel display will not light).

- Check with your hand that the fans are turning freely.

FIGURE FOR THE STANDARD UNIT CONFIGURATION FOR MODELS:
045D-055D-070D-085D

•

•

•

•

•

m
o

d
e

s
e

t
o
n

o

f

f

CHECK COMPRESSOR OIL LEVEL

- Part of the compressor oil is pumped to the system when the compressor starts, so for split systems part of the oil can be
placed in the system: piping lines, traps, evaporator, etc.

- The quantity of oil in the system depends on the refrigerant charge. The compressor cannot work with incorrect or excessive
refrigerant.

- It may be necessary to add oil to the system, depending on the piping length.

- See below an example of calculation of the oil quantity to be added to the system.

EXAMPLE:

ASH 030S + Air treatment unit with 65 m. (with remote option).

- Refrigerant charge = 6.33 kg (TABLE 3.1, p. 21).

- Refrigerant charge to add with 65 m = 182g/m x 65 = 11.83kg. (TABLE 2, p. 20).

- Total refrigerant charge = 6.33 + 11.83 = 18.16 kg.

- Oil compressor charge (l) = 3.25

- Oil compressor charge (kg) = 2.925 (density = 0.9).

- Permissible quantity in the system (kg) = 0.03 (= 2.925 x 0.01).

- Permissible refrigerant charge (kg) = 6 (= 0.03/ 0.005).

- Excess refrigerant charge = 18.16 - 6 = 12.16

60.8 g (= 12.16 x 5 g) quantity of oil to be added to the system.

0.55 l of oil to be added to the system.

In the event of having to add oil, remember the type of oil is synthetic POE.
The original oil charge, including the compressor, is ICI Emkarate RL32-3MAF. This type of oil must also be used when replacing
the oil completely.
If only topping up, RL32-3MAF or Mobil EAC Artic 22C can be used.

• 26 •

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

3. COMMISSIONING AND OPERATION

3.2.- PRELIMINARY CHECKS AT STARTUP

To start the unit, follow the instructions given in the User Manual for the control supplied with the unit
(requiring operation in any of the modes, cooling, heating, or automatic).
After a time delay, the unit will start.
With the unit operating, check that the fans are turning freely and in the correct direction.

CHECK THAT THE COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION

- If you have the option phase rotation indicator, use it to check the correct rotation.

- If you do not have three phase return lock, check the correct direction of rotation. The suction pressure decreases and the discharge
pressure increases when the compressor is started.

- If the connection is incorrect, rotation will be reversed, causing a high noise level and a reduction in the amount of current consumed.
If this occurs, the compressor’s internal protection system will operate to shut down the unit. The solution is to disconnect, reverse
two of the phases and connect again.

ASTP Protection is included with the unit compressors. See "Fault diagnosis" for more information.

WITH OPERA TING UNIT, CHECK:

- Low pressure and high pressure.

- Use the evaporating and liquid temperature to calculate superheat and subcooling.

- Adjust the refrigerant charge and/or expansion valve according to the preceding values.

COMPRESSOR OIL LEVEL

The oil level must always be checked. When the compressor is at rest, the level should be between 1/4 and 3/4
in the sight glass, while when running the level should be between 3/4 and full.
In the event of having to add oil, remember the type of oil is synthetic POE.
The original oil charge in the compressor is ICI Emkarate RL32-3MAF. This type of oil must also be used when replacing the oil
completely.
When only topping up, RL32-3MAF or Mobil EAC Artic 22C can be used.

The unit must be installed in accordance with local safety
codes andregulations and can only be used in a well
ventilated area. Please readcarefully the manufacturer’s
instructions before starting this unit

All work on the unit must be carried out by a qualifi ed and
authorised employee.

Non-compliance with the following instructions may result in injury
or serious accidents.

Work on the unit:

The unit shall be isolated from the electrical supply by disconnection
and locking using the main isolating switch. Workers shall wear
the appropriate personal protective equipment (helmet, gloves,
glasses,etc.).

Electrical system:

Electrical connections can become loose during transport. Please
check them before starting-up the unit Compressors with specifi c
rotation direction. Check the correct rotation direction of the fan
before closing the compressor circuit breakers. If the direction is
incorrect, the phases must be reversed at the head of the main
switch. Work on electric components shall be performed with
the power off (see below) by employees having valid electrical
qualifi cation and authorisation.

Refrigerating circuit(s):

After more than 12 hours of power cut, the cranckcase heater
(compressor) should be powered for 5 hours before any return
to service. Non-compliance with this instruction can cause
deterioration of the compressors.
Monitoring of the pressures, draining and fi lling of the system under
pressure shall be carried out using connections provided for this
purpose and suitable equipment.

To prevent the risk of explosion due to spraying of coolant and oil,

the relevant circuit shall be drained and at zero pressure before

any disassembly or unbrazing of the refrigerating parts takes place.
There is a residual risk of pressure build-up by degassing the oil or
by heating the exchangers after the circuit has been drained. Zero
pressure shall be maintained by venting the drain connection to
the atmosphere on the low pressure side.
The brazing shall be carried out by a qualifi ed brazier. The brazing
shall comply according to code ASME section IX following the
procedures specifi c.

Before starting up

- Test the circuit to the maximum working pressure(see the
nameplate)

- Verifi fy the operation of the high pressure swich.

- Check the piping and the components of the refrigerant circuit.

Replacing components:

In order to maintain CE marking compliance, replacement of
components shall be carried out
using spare parts, or using parts approved by Lennox.
Only the coolant shown on the manufacturer’s nameplate shall be
used, to the exclusion of all other
products (mix of coolants, hydrocarbons, etc.).

CAUTION:

In the event of fi re, refrigerating
circuits can cause an explosion
and spray coolant gas and oil.

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

4. MAINTENANCE

4.1.- PREVENTIVE MAINTENANCE

PREVENTIVE MAINTENANCE PREVENTS COSTLY REPAIRS.

THIS REQUIRES PERIODIC INSPECTIONS:

GENERAL STATE OF THE CASING:

Furniture, paint, damage due to shocks, rust spots, levelling and suppor­ting, condition of the shock absorbers, if installed, screwed panels, etc.

COMPRESSOR:

If a sight glass is fi tted, check the oil level.
Check the condition of the silentbloc mountings.

ELECTRICAL CONNECTIONS:

State of hoses, tightness of screws, earthing, current consumption of
the compressor and fans and check that the unit is receiving the correct
voltage.

COOLING CIRCUIT:

Check that the pressures are correct and that there are no leaks. Check
that there is no damage to the pipe insulation, that the condition of the
coils is good and that they are not blocked by bits of paper or plastic
drawn in by the air fl ow, etc.

FANS:

Check that fans turn freely and in the correct direction without excessive
noise.

CONTROL:

Check Set Points and normal operation.

4.2.- CORRECTIVE MAINTENANCE

MAKE SURE THAT THE UNIT IS FULLY DISCONNECTED FROM THE POWER SUPPLY WHEN CARRYING OUT ANY TYPE OF

If any component in the cooling circuit is to be replaced, follow these recommendations:

- Always use original replacement parts.

- If the component can be isolated, it is not necessary to remove the entire refrigerant charge, if the component cannot be isolating and the refri­gerant charge is removed, it should be removed through the Schrader valves located in the outdoor section. Create a slight vacuum as a safety
measure.

- Regulation prohibits the release of refrigerant into the atmosphere.

- If cuts must be made in the pipe work, use pipe cutters. Do not use saws or any other tools that produce fi lings.

- All brazing must be carried out in a nitrogen atmosphere to prevent corrosion forming.

- Use silver alloy brazing rod.

- Take special care that the fl ame from the torch is directed away from the component to be welded and cover with a wet rag to prevent overhea-
ting.

- Take very special care if 4-way or check valves are to be replaced since these have internal components that are very heat-sensitive such as plastic, tefl on, etc.

- If a compressor is to be replaced, disconnect it electrically and un-braze the suction and discharge lines. Remove the securing screws and
replace the old compressor with the new one. Check that the new compressor has the correct oil charge, screw it to the base and connect the
lines and electrical connections.

- Evacuate above and below through the Schrader valves of the outdoor unit until -750 mm Hg is reached. Once this level of vacuum has been

ched, keep the pump running for at least one hour.

rea

DO NOT USE THE COMPRESSOR AS A VACUUM PUMP.

- Charge the unit with refrigerant according to the data on the Rating Plate
for the unit and check that there are no leaks.

IMPORTANT

WORK ON THE MACHINE.

Wet rag

Direction of the fl ame

Silver alloy welding rod

Nitrogen

PRECAUTIONS TO BE TAKEN WHEN USING OF R-410A Refrigerant:

R-410A refrigerant is used in the unit; the following standard precautions for this gas should therefore be taken:

- The Vacuum Pump must have a Check Valve or Solenoid Valve fi tted.

- Pressure Gauges and Hoses for exclusive use with R-410A Refrigerant should be used.

- Charging should be carried out in the Liquid Phase.

- Always use scales to weigh-in charge

- Use the Leak Detector exclusive for R-410A Refrigerant.

- Do not use mineral oil, only synthetic oil to ream, expand or make connections.

- Keep pipes wrapped before using them and be very thorough about any possible dirt (dust, fi lings, burrs, etc.).

- When there is a leak, collect what remains of the charge, create a vacuum in the unit and completely recharge with new R-410A Refrigerant.

- Brazing should always be carried out in a nitrogen atmosphere.

- Reamers should always be well sharpened.

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

Component to be welded

4. MAINTENANCE

4.3.- FAULT DIAGNOSIS

In case of failure or malfunction of the unit, the display on the control panel will show an error or alarm warning which is explained
in the control panel manual. Nevertheless, whenever there is a unit fault, the unit should be shut down and our service technicians
consulted.

FAULT POSSIBLE CAUSES POSSIBLE SOLUTIONS

UNIT DOES NOT START

UNIT STOPS DUE TO HIGH PRESSURE
DURING THE COOLING CYCLE

UNIT STOPS DUE TO HIGH PRESSURE
DURING THE HEA TING CYCLE

UNIT STOPS DUE TO LOW
PRESSURE

Fault in the power supply or insuffi cient
voltage.

Connect the power supply or check the

voltage.
Circuit breakers have opened. Reset.
Power cable or control panel cable is

defective.

High pressure switch is defective.

Outdoor fan is not working.

Inspect and correct.

Check cut-off pressure switch or replace

pressure switch if necessary.

Check for voltage, inspect the motor and

turbine or replace if necessary..
Outdoor fan turns in the wrong direction. Reverse the power phases.
Outdoor coil is dirty or clogged for pas-

sing air.

Excess refrigerant charge.

Inspect and clean.

Remove the charge and charge according

to the data on the rating plate.
The same causes and solutions as the cold cycle but with reference to the coils and

indoor fan.

Check the cut-off pressure with a pressure
Low pressure switch defective.

gauge and replace the pressure switch if

necessary.

Indoor fan is not working.

Check for voltage and inspect the motor,

turbine and replace if necessary.
Indoor fan turns in the wrong direction. Reverse the power phases.
Lack of refrigerant. Leak. Correct leak, create vacuum and charge.
Dirty air fi lter. Inspect and clean

UNIT STARTS AND STOPS IN SHORT
CYCLES

Clogged cooling circuit.
Dirty fi lter drier.

Compressor overcharged.

Compressor cuts off due to Klixon. Check input voltage and voltage drop.

Inspect and correct or change the fi lter

drier.

Inspect suction and discharge pressure

values and correct.

Lack of refrigerant. Correct leak and replace.

LOAD AND ABNORMAL NOISE IN THE
COMPRESSOR (SCROLL)

All the components derived from the recycling of the unit should be managed according local legislation, and have to be classi­fi ed and separated while dealt by authorized waste manager or be left in local waste facilities.

Refrigerant fl uids, electronic boards, heat exchangers and the oil extracted from the refrigerant circuit, as well as the oil reci-
pients used must be recycled as hazardous waste according the local normative through an authorized waste manager or be
left in local waste facilities. The rest of the components considered as non-hazardous wastes must be recycled according to the
corresponding norms.
At the end of its life, the equipment should be recycled in local waste facilities or by an authorized waste manager.

Power supply phases inverted.
(three-phase compressor).

Check and reverse power phases.

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

4. MAINTENANCE

4.3.1.- SAFETY DEVICES

Unit with specifi c compressor protection

ASTP COMPRESSOR PROTECTION:

This device protects the compressor against high discharge temperatures.
When the temperature reaches critical values, ASTP protection causes the "Scrolls"
to separate. The compressor stops pumping but the motor continues to run.

- Occasionally, when the compressor stops and starts, there is a metallic noise due to
the compressor scrolls. This is normal.

- Connect high and low pressure gauges and check that the operating pressures are normal.

- Measure electrical consumption for the unit and check that it is close to that indicated on the specifi cation plate.

- Check the electrical consumption of the compressor and the fans against that specifi ed in the physical data sheets.

- In the case of a Heat Pump unit, make a cycle change on the Control Panel, checking that the 4-way valve makes
the change correctly. Check the pressures in the new cycle.

- Split and Multi-split: Low pressure switch and high pressure switch are reset automatically and if it operates
3 times in one day, they change to manual reset, through the control unit.

- With C60 control: Low pressure switch and high pressure switch are reset automatically and if it operates 3
times in one day, they change to manual reset, through the control unit.

La unidad incorpora compresor con protección específi ca

• 30 •

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

NOTES

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

SALES OFFICES :

BELGIUM AND LUXEMBOURG PORTUGAL

+ 32 3 633 3045 [phone]

+ 32 3 633 3045 [phone]

FRANCE RUSSIA

[phone] [phone]

[phone] [phone]

GERMANY SPAIN

[phone] [phone]

[phone] [phone]

ITALY UKRAINE

+ 39 02 495 26 200 [phone]

+ 39 02 495 26 200 [phone]

NETHERLANDS UNITED KINGDOM AND IRELAND

+ 31 332 471 800 [phone]

+ 31 332 471 800 [phone]

POLAND

[phone]

[phone]

OTHER COUNTRIES :

LENNOX DISTRIBUTION

LENNOX DISTRIBUTION

[phone]

[phone]

Due to LENNOX EMEA ongoing commitment to quality, the specifi cations, ratings and
dimensions are subject to change without notice and without incurring liability.
Improper installation, adjustment, alteration, service or maintenance can cause property
damage or personal injury.
Installation and service must be performed by a qualifi ed installer and servicing agency.

www.lennoxemea.com

MIL152E-1217 01/2019