Lennox eCOMFORT R32 GAC 035S User manual

www.lennoxemea.com
eCOMFORT R32
35 - 210 kW
AIR COOLED LIQUID CHILLER  HEAT PUMP
INSTALLATION, OPERATING
AND MAINTENANCE
MIL166E-0222 09-2022

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
TABLE OF CONTENTS
AIR COOLED UNITS
The present manual applies to the following chiller versions:
eComfort range: GAC-GAH 35-210
Ref.: MIL166E-0222 09-2022
Original version is the English one. Other versions are translations.
INSPECTIONS AND REQUALIFICATION ACCORDING PRESSURE EQUIPMENT DIRECTIVE MUST FOLLOW THE
LOCAL REGULATIONS WHERE THE UNIT IS INSTALLED.
All the technical and technological information contained in this manual, including any drawing and technical descriptions
provided by us, remain the property of LENNOX and must not be utilised (except in operation of this product), reproduced,
issued to or made available to third parties without the prior written agreement of LENNOX.
INSTALLATION,
OPERATION,
MAINTENANCE
MANUAL
Our company is a member of the Eurovent Certication Program, all LENNOX chillers are
tested and rated in accordance with Eurovent certication program.
Our products comply with the European standards.

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3
4
5 - 6
7 - 8
9 - 11
12
1.
1.1 13 - 19
1.2 20 - 21
1.3 22
1.4 23
1.5 24 - 27
1.6 28
1.7 29
1.8 30 - 41
1.9 42 - 50
2.
2.1 51 - 53
2.2 53
2.3 53
2.4 54
2.5 55 - 57
2.6 58 - 60
2.7 61 - 63
2.8 64 - 67
2.9 68
3.
3.1 69 - 70
3.2 71
3.3 71
3.4 72
3.5 73
4. 74
4.1 75
4.2 76 - 78
4.3 79 - 80
4.4 81
4.5 82
4.6 83
583
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
Page
INTRODUCTION
COMPLIANCE WITH REGULATIONS AND DIRECTIVES
WARRANTY
WARNING
FLAMMABLE GASES
DATA PAGE FOR UNIT COMMISSIONING
GENERAL CHARACTERISTICS
Technical data
Electrical data
Component
Operation limits
Hydraulic system data
Pressure drop in the water system
Water ow
Piping drawings
Dimensions
INSTALLATION
Transport-Handling
Site and shipping guidance
Unit lifting
Antivibration mounting
Weight distribution
Installation clearances
Unit installation
Electrical connections
Partial Heat Recovery
COMMISSIONING AND OPERATION
Steps to follow for commissioning the units
Unit operation: Electrical and control features
Climatic control
Checking the water ow rate
Water analysis
MAINTENANCE
Preventive maintenance
Maintenance plan
Cleaning the condenser
Process for replacing a compressor on eld
Corrective maintenance
Failure diagnosis
END OF THE MACHINE LIFE
TABLE OF CONTENTS

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
IMPORTANT GENERAL INSTRUCTIONS
You must read and be familiar with this operating manual prior to commission the chiller.
Please closely follow the instructions.
We would like to stress the importance of training with respect to the correct handling of the chiller.
Please consult LENNOX on the options available in this eld.
It is important that this manual is stored in a permanent location in the vicinity of the chiller.
This manual contains important instructions regarding the commissioning of the chiller. It also includes important instructions to prevent
personal injury and damage to the machine during operation. Furthermore, in order to promote fault-free operation of the chiller,
maintenance information has been included.
Please do not hesitate to contact one of our employees should you require further information on specic chiller subjects. Order related
documentation will be forwarded under separate cover.
This documentation consists of:
• EU declaration.
• Operating manual for control system.
• Installation operating manual.
• Wiring diagram.
• Refrigerant ow diagram.
• Units detail are given on unit nameplate.
The data published in this manual is based on the most recent information available. It is supplied conditional to later modications.
We reserve the right to modify the construction and/or design of our chillers, at any time, without prior notication or obligation to adapt
previous supplies accordingly..
Any work on the Chiller should be carried out by trained and licensed competent technician. The
following risks are present on the unit:
• Risk of electrical shock.
• Risk of injury from rotating parts.
• Risk of injury from sharp edges and heavy weight.
• Risk of injury from high pressure gas.
• Risk of injury from slightly ammable refrigerant.
• Risk of injury from high and low temperatures components.
It is expected that all works on equipment be carried out in accordance with all local standards and
norms. It is expected that all works are carried out with good working practices.
Inspections and requalication according to Pressure Equipment Directive (PED) must follow the local
regulations where the unit is installed.
The refrigerating system is designed for a working life of at least 10 years if the safety and maintenance instructions are strictly
respected.
The equipment can be renewed in its lifespan if the periodic requalication certicate is validated by the expert (Authorized body or
DREAL for France)
INTRODUCTION
We remind you that these instructions must be followed for operation, maintenance, repair and decommissioning of the
product. Failure to follow these instructions will result in the o󰀨ender assuming the manufacturer's responsibilities.

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
Non compliance with these requirements is an o󰀨ence and liable of nancial penalties.
Moreover, in case of problem it is mandatory to prove to the insurance company that the equipment
complies with the F gas Regulation.
COMPLIANCE WITH REGULATIONS AND DIRECTIVES
The units comply with the directives and regulations which apply at the time of their placing on the market.
For more information, please see the product’s Declaration of Conformity.
SAFETY DEVICES:
This equipment is protected with calibrated safety pressure switches.
PRESSURE RELIEF VALVES:
This equipment contains pressure relief valves to limit damage in the event of an external re. Make sure that people are not exposed
to refrigerant discharge.
IMPORTANT NOTICE:
All work on the unit must be carried out by a qualied and authorized personnel.
Non-compliance with the following instructions may result in injury or serious accidents.
Works on the unit:
• The unit shall be isolated from the electrical supply by disconnecting and locking out the main isolating switch.
• Workers shall wear the appropriate personal protective equipment (helmet, gloves, glasses, etc.).
Works on the electrical system:
• Work on electrical components shall be performed with the power o󰀨 by suitably trained and qualied personnel.
EMC DIRECTIVE COMPLIANCE - WARNING:
This equipment is compliant with the essential requirements of the EMC2014/30/EU directive for residential environment (without
eDrive pump option) and industrial environment (with eDRive pump option).
The units meet the following hardest environments standards, according to the product’s Declaration of Conformity:
• EN 61000-6-2: immunity for industrial applications.
• EN 61000-6-3 without eDrive pump option: Emissions for residential, commercial and light industry applications.
• EN 61000-6-4 with eDrive pump option: Emissions for industrial environments.
• The short-circuit rate Rsce=33 is dened in the EN61000-3-12 standard relative to the harmonics readings on the supply network.
The appliances compliant with the harmonic current limits equivalent to Rsce=33 can be connected in whatever connection point of
the main supply system.
• The maximal allowable impedance of the main supply system Zmax=0.185Ω is dened by EN 61000-3-11 standard relative to the
voltage variation, uctuation and icker readings. The connection to the supply is a conditional connection submitted to the prelimi-
nary agreement of the power supply local provider.
The di󰀨erences between the various machines are only related to the power of the compressors and equipment that are associated.
For conducted and radiated emission and immunity, these di󰀨erences do not alter the results.
Work on the refrigerant circuits:
• Monitoring of the pressures, draining and 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 release of refrigerant and oil, the relevant circuit shall be drained and at zero pressure befo-
re any disassembly or unbrazing of the refrigerating parts takes place.
• To vacuum the unit with appropriate vacuum device for R32 (A2L) and to charge the unit with dry nitrogen to enable possible re-
maining R32 to be removed from oil. Repeat these operations twice.
• 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 qualied brazer. The brazing shall comply with the standard NF EN1044.
Replacement of components:
• In order to maintain CE marking compliance, replacement of components shall be carried out using approved parts 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 re, refrigerating circuits can cause an explosion and spray coolant gas and oil.
F-GAS REGULATION:
PLEASE READ THE SAFETY DATA SHEET OF THE REFRIGERANT BEFORE ANY INTERVENTION OR INSTALLATION OF THE
UNIT.
Operators of refrigeration equipment’s must comply with the obligations dened in:
• Regulation on Fluorinated greenhouse gases (F Gas).
• Regulation on substances that deplete the ozone layer.

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
WARRANTY
The warranty of the chillers is subject to the warranty denitions as agreed upon in the order.
It is expected that the design and installation of the unit utilises good working practices.
The warranty will be legally null and void if:
• Service and maintenance have not been executed in accordance with the regulations; repairs have not been carried out
by LENNOX personnel or have been implemented without prior written permission by LENNOX.
• Modications have been made to the equipment without prior written permission by LENNOX.
• Settings and protections have been modied without prior written permission by LENNOX.
• Non-original or other than the prescribed refrigerants or lubricants are used.
• The equipment has not been installed and/or connected in accordance with the installation instructions.
• The equipment is being used improperly, incorrectly, negligently or not in accordance with its nature and/or purpose.
• A ow protection device is not tted.
In these circumstances LENNOX is indemnied from any product liability claims from third parties.
In the event of a warranty claim the machine serial number and LENNOX order number must be quoted.
In the absence of any other written agreement (e.g. local regulations), the guarantee shall only apply to design faults which occur within
the warranty period.
• The warranty will only apply if a maintenance contract has been signed, starting from the date of commissioning, and if the mainte-
nance contract has actually been performed.
• The maintenance contract must be made with a specialist, competent company.
• The sole e󰀨ect of any repair, modication or replacement of an item during the warranty period must be to extend the material’s
warranty period.
• Maintenance must be carried out in accordance with regulations.
• In addition to annual checks, safety accessories for non-toxic uids must be requalied (calibrated or replaced) every 12 months,
according to the current regulations.
• If a spare part is supplied after the expiry of the warranty period, it shall be guaranteed for a period equal to the initial warranty
period and will be subject to the same conditions.
• We recommend for a contract four inspections per year (every three months), before the start of each season, in order to check the
operation of the equipment in the various operating modes.
DISPOSAL OF THE EQUIPMENT:
Equipment shut-down and recuperation of oil and coolant must be carried out by qualied personnel conform to the recommendations
of standard.
All elements in the refrigeration system such as refrigerant, oil, coolant, lters, dryers and insulating materials must be recuperated, re-
used and/or disposed of in a correct manner, according to the current regulations. No materials may be discarded into the environment.
The corresponding organization in each country will be in charge of collecting, decontaminating and recovering the eliminated mate-
rials, ensuring that each step is carried out in full compliance with current regulations.
DO NOT CONFUSE THE WARRANTY WITH MAINTENANCE.

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
SAFETY:
The safety information contained in this manual is provided as a guide for the safe handling of this installation. LENNOX
does not vouch for the completeness of this information and can therefore not accept liability for any possible omissions.
In the chillers, heat is being transported by a pressurised refrigerant, with changes in pressure and temperature. For air cooled chillers,
fans have been provided to discharge heat into the environment. The protection of operating and maintenance personnel was central
in the design of the chiller. Safety features have been included to prevent excessive pressure in the system. Sheet metal parts have
been tted to prevent inadvertent contact with (hot) pipes. For air cooled chillers, the fans are equipped with protective grids and the
electrical control panel is completely touch-proof. This excludes some parts operating at a safe voltage (< 24 Volt). The service panels
can only be opened with a special tool to prevent unauthorized access.
Notwithstanding that the chillers are equipped with extensive safety and protection features, the utmost care and attention
is needed when carrying out operations on the machine. Furthermore, ear protection should be worn when working on or
in the vicinity of the chillers. Operations on the cooling circuit or electrical equipment should be carried out by authorised
personnel.
It is essential to follow non exhaustive recommendations hereunder:
• Never work on a unit that is still energized.
• Any manipulation (opening or closing) of a shut-o󰀨 valve must be carried out by a qualied and authorised engineer. These proce-
dures must be carried out with the unit shut-down.
• Never work on any of the electrical components, until the general power supply to the unit has been cut. During any maintenance
operations on the unit, lock the power supply circuit in the open position ahead of the machine. If the work is interrupted, check the
lock before resuming the work. WARNING: Even if the unit has been switched o󰀨, the power circuit remains energized, unless the
unit or circuit disconnect switch is open. Refer to the wiring diagram for further details.
• In case of maintenance operations on fans (grills replacement, etc) ensure that the power is shut o󰀨 to avoid automatic restart.
• Before the opening of the refrigerant circuit, check the pressure with manometers or pressure sensors.
• Never leave a unit stopped with valves closed on the liquid line, refrigerant could be trapped and the pressure would rise.
• All installation parts must be maintained by the personnel in charge, in order to avoid material deterioration and injuries to people.
Faults and leaks must be repaired immediately. The authorized technician must have the responsibility to repair the fault immedia-
tely. Each time repairs have been carried out to the unit, the operation of the safety devices must be re-checked.
• Follow guidance and recommendations given in safety and machine standards such as EN378, ISO5149, etc.
• Do not use oxygen to purge lines or to pressurize a machine for any purpose. Oxygen gas reacts violently with oil, grease, and
other common substances.
• Never exceed the specied maximum operating pressures. Verify the allowable maximum high- and low-side test pressures by
checking the instructions in this manual and the pressures given on the unit name plate.
• Do not use air for leak testing. Use only dry nitrogen.
• Do not unweld or ame cut the refrigerant lines or any refrigerant circuit component until all refrigerant (liquid and vapour) has
been removed from chiller. Traces of vapour should be displaced with dry air nitrogen. Refrigerant in contact with an open ame
can ignite and produce toxic gases. Do not siphon refrigerant.
• Wearing PPE is mandatory (glasses, cu󰀨s, gloves, masks). Avoid spilling liquid refrigerant on skin or splashing it into the eyes. Use
safety goggles. Wash any spills from the skin with soap and water. If liquid refrigerant enters the eyes, immediately and abundantly
ush the eyes with water and consult a doctor.
WARRANTY

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
Warning labels
The chiller may be marked with the following warning labels to alert to potential hazards (on or near the potentially hazardous part).
The chiller may include the following labels.
Regularly check that the warning labels are still in the correct positions on the machine and replace them if necessary.
WARNING
High temperatures Low temperatures Rotating parts Sharp parts
Electrical voltage A2L: slightly ammable Non-ammable liqueed gas
(high pressure)
Flammble liqueed gas
(high pressure)
Don’t walk on it Wear of PPE (Personal
protective equipment)
Warning
Inammable dusty lters Don’t strap
Gravity center Warning main switch supplied
from bottom EUROVENT certication
Protection by water lter
mandatory
Protection by strainer lter
mandatory
OK to send document Information to read Electrical connections can loosen during transport
Please check them before start-up
CMIM marking (Morocco) CE marking CA marking (UK) EAC marking (Russia)

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
WARNING:
1. Caution: The high-pressure safety switches are essential elements which guarantee the system remains within the admissible
operating limits. Before switching on the installation, always ensure all electrical connections are correct on these elements
which are used to isolate the electrical power supply to the compressor(s) they protect. Carry out a test to ensure the electrical
power supply is e󰀨ectively isolated when the pressure switch attains its set value.
2. In case of installation in a seismic zone or in a zone which may be e󰀨ected by violent natural occurrences such as storms,
tornados, oods, tidal waves, etc…, the installer and/or operator will refer to valid standards and regulations in order to ensure
the devices required are available as our units are not designed to operate under such conditions without prior precautions.
3. The pressure increase in case of external re is not considered a condition of operation to the standard. However, the
designer must implement means to limit damage in the event of re:
Our products, even equipped with LFL probes (for products loaded with uid of category A2L) are not designed to withstand
a re. This re risk must be taken into account by the integrator/installer in the risk analysis of the place where our products
are installed. The installation site must implement all the necesary means in terms of re protection and comply with the
regulations in force. The installation of means according to PED Directive for refrigeration systems in a separate room for
refrigerated machines meets the requirement of damage limitation.
4. In case of exposure to corrosive external atmospheres or products, the installer and/or operator shall take the necessary
precautions to avoid damage to the equipment and will make sure the equipment provided has the necessary and su󰀩cient
anti-corrosion protection. This product has been designed to resist a C3H corrosive atmosphere according to ISO 9223.
5. To respect a su󰀩cient number of supports for the piping according to their size and weight under operating conditions and to
design the piping to avoid a water hammer phenomenon.
6. All our units carry out a hydrostatic tests and leak test. (The entire circuit is checked using leak detectors). At the end of the
test, an HP test is carried out in the factory to make sure the pressure switch is working properly.
7. All our units are delivered with refrigerant from factory. Then all the refrigerant circuit will be pressurized
8. The emissions of refrigerant via the safety relief valves must be channeled to the exterior of the machine room. The outlet
safety relief valve will have to be sized in compliance with EN13136.
9. Installation and maintenance of these machines must be carried out by personnel qualied to work on refrigeration equipment.
10. All interventions must be carried out in conformity with valid safety regulations (e. g.: NF EN 378), as well as the recommendations
indicated on the labels and handbooks provided with the machine. All actions shall be taken to avoid access of unauthorized
persons.
11. It is essential that any pipework or other components of the refrigeration circuit hazardous to people because of their surface
temperature are insulated or identied.
12. Ensure that the installation zone (room or area) of the machine has restricted access and ensure the good condition of the
covering.
WARNING
PED DIRECTIVE:
For units covered by the Pressure Equipment Directive (see EU Declaration of Conformity).

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
FLAMMABLE GASES
As standard, the eCOMFORT range is supplied with R32 refrigerant which is a ammable gas classied A2L (slightly ammable).
A2L / A2 / A3 ammable gases are subject to more important safety regulations than gases classied A1. This section summarizes
the standard and provides specic Lennox recommendations. This section is based on the standards as well as numerical simulations
and tests related to the ammability risk carried out on these products. It provides the recommendations to be considered so that the
product is installed, used, maintained and destroyed at the end of its life cycle without putting the actors in the product life cycle at risk.
FLAMMABILITY CLASS
A1 Non-ammable
A2L Slightly ammable
A2 Low ammable
A3 Highly ammable
LABELS OF FLAMMABLE GAS UNIT:
The A2L logo on the nameplate indicates that the product contains refrigerant of the slightly ammable category. It is
also positioned on schraders where refrigeration components can be connected for maintenance. This label tells you that
there is a potential risk of a ammable gas leak and that this should be taken into account in the operational risk analysis.
TRANSPORT OF FLAMMABLE GAS UNIT:
Machines loaded with A2L refrigerant must comply with the ADR rules (Accord for dangerous goods by road).
Please plan the route in accordance with this class. In the case of specic air transport requiring machines not
charged with refrigerant, please contact your Lennox contact.
UN3358 transports are not allowed in Eurotunnel and tunnels of category D and E.
Containers must be tted with stickers according to the plan below:
In the transport voucher, note: Refrigerant units.
In case the machine contains more than 12kg of refrigerant, please also note the total amount of refrigerant on the transport voucher.
In the case of maritime transport, the IMDG (International Maritime Dangerous Goods Code) is based on the same rules as the ADR.
Some specic local rules may apply (especially in Asia).

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
FLAMMABLE GASES
Please do not approach the container or truck in the presence of an open ame, an electric power source, a cell phone, or any other
heat source whose temperature would exceed 500°C.
Likewise, if the product had to be stored prior to installation, please store it in a place free from potential sources of ignition as descri-
bed above.
Persons working on refrigeration systems using ammable uids must have the necessary skills in accordance with standard for the
safe handling of these ammable uids.
• Knowledge of the legislation, regulations and standards concerning ammable refrigerants.
• Knowledge of uids and their handling.
These skills must be supported by appropriate training.
Only equipment designed for use with ammable refrigerants should be used and all work performed on the equipment should be in
accordance with local regulations and standards. Of course, all work must be carried out in a professional manner.
To ensure the absence of a secondary ATEX zone, maintainers should:
• Set up a periodic leakage inspection plan to ensure that the product’s leakage level is maintained.
• Set up an inspection and maintenance plan to avoid deterioration of the product that could lead to an accidental leak during the life
of the equipment.
Corrosion: Do not use detergents. Do not use in an atmosphere corrosive to copper and aluminum without protecting the sen
sitive elements of the exchanger.
Freezing of the heat exchanger coil: Check regularly that the coil is not frozen. Check that the defrosting system is working
properly and that it is e󰀨ective.
Abnormal vibrations: Check that the pipes are properly maintained.
• If a safety chain is installed, please maintain the detection system and the associated control chain according to standards.
It is forbidden to store and install the machine in an ATEX area.
In the immediate area of the unit (proximity distance ≤ to 2m):
• The presence, even temporary, of ignition sources is prohibited (electrical or heat sources),
• It is forbidden to install fresh air vents in the building or in extracts
For ducting / ducted units, ensure that no sources of ignition as dened in the standards (e.g. electrical and heat) are installed in or
near the ducts.
RECEPTION CONTROLS FOR A FLAMMABLE GAS UNIT:
SAFETY:
SAFETY AREA:
INSTALLATION ON A FLAMMABLE GAS UNIT:
Our products (Rooftops, Chillers) and quasi-machines (evaporators, air-cooled condensers, ...) are hermetically sealed and carry the
CE mark. They are designed to contain slightly ammable A2L refrigerants. As such they are not considered as a source of release as
dened by the directive in normal operation. In France, they are exempt from the measures described in the regulation governing the
safety of buildings open to the public (ERP).
A formalized periodic inspection of the product’s hermeticity will guarantee the preservation of this high level of hermeticity.
Nevertheless, in abnormal operating conditions, leaks may occur (poor maintenance, maintenance with opening of the refrigeration
circuit). For these cases, prior to placing these products on the market, we carried out studies in accordance with standards. Thus the
unit installed according to our recommendations and well maintained does not generate an ATEX zone.
Please maintain the detection system and the associated control chain according to standards. In case of maintenance we recommend
that the operators be equipped with an explosimeter, switch o󰀨 the power supply to the unit and do not approach any potential source
of ignition without rst checking the absence of a potentially ammable area due to an undetected leak.
The end user should update the DUER (Document Unique d’Evaluation des Risques) indicating the presence on his site of products
charged with R32 uid, and train his personnel on the good practices to be adopted for a safe use.

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Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
FLAMMABLE GASES
POWERING UP A UNIT CONTAINING FLAMMABLE GAS:
Before switching on the power supply, please carry out a refrigerant leak detection using an appropriate device to ensure that there is
no refrigerant around the machine. . Please perform a refrigerant detection with a suitable and calibrated detector to ensure that there
is no gas around the unit.
ELECTRIC WIRING ON A UNIT CONTAINING FLAMMABLE GAS:
When a cable passes through a wall, be sure to use a cable gland to ensure that the cable is sealed and insulated. This insulation
prevents any electric arcs that could ignite the refrigerant if leaked.
INTERVENTION ON A UNIT CONTAINING FLAMMABLE GAS:
Before any intervention on a machine with A2L / A2 / A3 ammable uid, please carry out a refrigerant leak detection using an appro-
priate device to ensure that there is no refrigerant around the machine.
When working on a machine with ammable uid A2L / A2 / A3, do not cause sources of ammability in the area near the unit (see
above). For example: do not smoke, make phone calls, do not use walkie-talkies.
CORRECTIVE MAINTENANCE ON R32 GAS UNIT:
The following precautions, specic to this gas, must be taken when using the R32 refrigerant;
• The vacuum pump must be tted with a non-return valve or a solenoid valve and comply with R32 (A2L).
• The pressure control, draining and lling operations of the pressurized system must be carried out using the ttings specied for
this purpose and the appropriate equipment.
• Use only pipe cutters and no torches to open the pipes.
• The load must be applied in the liquid phase.
• Always use a scale to charge the refrigerant.
• Use the leak detector suitable for R32 refrigerant.
• Do not use mineral oil, only synthetic oil for boring, expanding or making connections.
• Keep the pipes closed before using them and pay close attention to any traces of humidity and dirt (dust, lings, burrs, etc.).
• Brazing must always be carried out in a nitrogen atmosphere.
• The drill bits must always be sharp.
• The refrigerant bottle must contain at least 2% of the total amount.
• The brazing operation must be performed by a professional.
WARNING:
Care must be taken to remove refrigerant from the system before cutting or unbrazing any piping with a tool suitable for use
with A2L uids.
We recommend the following protocol before any piping work:
• To avoid any risk of explosion due to the spraying of refrigerant liquid and oil, the circuit must be drained and display a relative
pressure of zero during the disassembling or debrasing of parts of the refrigerant circuit.
• Vacuum with A2L compatible equipment and recharge with dry nitrogen to allow the uid dissolved in the oil to degas.
• Repeat these operations twice.
• Once the circuit has been drained, there is a residual risk of pressure build-up by degassing the oil or due to the heat from the
exchangers. To keep the pressure at zero, the pipe connection must be bled from the low pressure side.
Vacuum procedure:
• Connect the vacuum pump to the HP line and to the BP line.
• Draw vacuum (P = 1Pa). Break the vacuum with dry nitrogen. Draw vacuum again (P = 1Pa), the residual moisture content must
be less than 50ppm.
• Perform a vacuum test (15 minutes at maximum 70Pa).
The compressors must be switched o󰀨 during the vacuum test.

• 12 •
°C
°C
°C
A
A
A
A
A
A
A
A
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
Unit: Serial no.:
Control panel identication code:
Installation address:
Installer: Installer tel.:
Installer address:
Date of commissioning:
Checks:
Supply voltage: Rated voltage of the
unit:
Options Installed:
Comments:
DATA INPUT COOLING CYCLE HEATING CYCLE
Air Input Temperature, Coil
Water Output Temperature
Water Input Temperature
High Pressure
Low Pressure
ELECTRIC POWER CONSUMPTION COOLING CYCLE HEATING CYCLE
Compressor 1
Fan 1
Compressor 2
Fan
Compressor 3
Fan 3
Compressor 4
Fan 4
YES NO
Unit on rubber antivibration mounts
General power supply connection
Control panel connection (option)
Compressor oil level indicator
Hydraulic connection
Purged of the installation
DATA PAGE FOR UNIT COMMISSIONING

• 13 •
GA C 035 S P 1 M
LNCJ
SFAC
HIFP
ACTR
CPGR
LLWT
PHRF
RLKD
SPLP
DPLP
SPEL
DPEL
SPHP
DPHP
SPEH
DPEH
BYVC
WTNG
WTHS
WTHH
WFIF
KGRL
ECLO
BNET
MBUS
MBIP
DM60
DS60
DCBO
CETH
CGSM
APEP
APPP
APPW
ELME
PHCT
SOFT
EBFM1
EBFM2
ALWA
POWF
AVUB
SLCR
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
C: Cooling only units
H: Heat pump units
Approximately capacity in kW
S: Single circuit
D: Dual circuit
P: Refrigerant R32
M: 400V/3/50 Hz
1.1.- TECHNICAL DATA
Type of unit eCOMFORT
1: Revision 1
OPTIONS
Low noise : Accoustic compressor jacket
Fixed speed standard AC fans
Variable air ow control with high pressure EC fans
LenGuard anti-corrosion condenser coil treatment
Coils protection: metallic grille
Low leaving water temperature down to -12°C
Domestic hot water supply: desuperheater
Refrigerant leak detection
Hydraulic module with low-pressure single pump
Hydraulic module with low-pressure twin pump
Hydraulic module with eDrive low-pressure single pump
Hydraulic module with eDrive low-pressure twin pump
Hydraulic module with high-pressure single pump
Hydraulic module with high-pressure twin pump
Hydraulic module with eDrive high-pressure single pump
Hydraulic module with eDrive high-pressure twin pump
Bypass Valve for delta P control with eDrive pump (supplied loose)
Water tank
Water tank electrical heater Standard
Water tank electrical heater High
Water lter (supplied loose)
Flange connection (supplied loose)
LonWorks® interface FTT10
BACnet® interface MSTP
ModBus interface RS485
ModBus and BACnet® interface TCP/IP
Remote advanced display (supplied loose)
Service display (supplied loose)
Remote control: customer drive contact input/output
Lennox Cloud connectivity Ethernet communication
Lennox Cloud connectivity GSM communication
Antifreeze protection on exchangers and pipings down to -20°C
Antifreeze protection on exchangers, pump(s), piping down to -20°C
Antifreeze protection on exchangers, pump(s),piping and water tank down to -20°C
Electric energy meter
Phase reversal protection
Soft starter
Electrical box upgrade ventilation : 1 fan
Electrical box upgrade ventilation : 2 fans
Aluminum wires adaptor (supplied loose)
Power factor correction
Anti-vibration mounts rubber type (supplied loose)
Wooden crate for long distance
NOTE: When it is possible options supplied loose should be included in a carton box inside the unit
1.- GENERAL CHARACTERISTICS

• 14 •
035S 040S 045S 050S 055S 060S 065S 070S 080S 095S
Kw 38,4 41,6 47,5 51,8 55,0 63,6 64,3 70,0 86,3 95,8
2 / Scroll
1 1/2” 2” 2 1/2”
m3/h 6,61 7,15 8,17 8,90 9,47 10,94 11,05 12,03 14,84 16,48
Kg 434 443 449 565 566 583 793 793 843 679
035S 040S 045S 050S 055S 060S 065S 070S 080S 095S
Kw 37,7 41,2 46,9 50,5 56,1 63,2 64,3 69,6 84,7 94,1
Kw 39,1 42,1 48,4 52,2 56,6 64,3 64,9 70,4 84,9 94,8
2 / Scroll
1 1/2” 2” 2 1/2”
m3/h 6,49 7,09 8,07 8,69 9,65 10,87 11,06 11,98 14,57 16,19
Kg 452 420 432 566 590 614 786 781 816 701
110S 115S 125S 140S 110D 125D 140D 160D 185D 210D
Kw 108,3 119,3 128,8 156,3 111,4 127,5 142,3 167,8 187,2 210,5
2 / Scroll 3 / Scroll 2+2 / Scroll
2 1/2” 3”
m3/h 18,63 20,53 22,15 26,89 19,16 21,93 24,48 28,86 32,19 36,20
Kg 691 719 868 859 895 901 880 1405 1441 1441
110S 115S 125S 140S 110D 125D 140D 160D 185D 210D
Kw 105,3 118,0 126,4 152,0 108,6 125,3 140,3 166,1 187,3 209,1
Kw 106,7 117,5 126,1 154,5 114,1 129,3 142,5 170,7 190,3 216,1
2 / Scroll 3 / Scroll 2+2 / Scroll
2 1/2” 3”
m3/h 18,12 20,29 21,74 26,14 18,68 21,55 24,13 28,56 32,21 35,97
Kg 751 801 872 864 900 934 894 1400 1447 1447
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
COOLING ONLY
HEAT PUMP
(*) Cooling capacity: Outside temperature: 35ºC / Inlet / Outlet water temperature: 12 / 7ºC.
(**) Heating capacity: Outside temperature: 7ºC DB / 6ºC WB / Inlet / Outlet water temperature: 40 / 45ºC.
GAC MODELS
Cooling capacity (*)
Number of compressors
Hydraulic connections
Nominal water rate
Net weight
GAH MODELS
Cooling capacity (*)
Heating capacity (**)
Number of compressors
Hydraulic connections
Nominal water rate
Net weight
GAC MODELS
Cooling capacity (*)
Number of compressors
Hydraulic connections
Nominal water rate
Net weight
GAH MODELS
Cooling capacity (*)
Heating capacity (**)
Number of compressors
Hydraulic connections
Nominal water rate
Net weight
1.1.- TECHNICAL DATA
1.- GENERAL CHARACTERISTICS
WARNING:
To know the R32 refrigerant charge, see the unit rating plate.

• 15 •
GAC/GAH 035S 040S 045S 050S 055S 060S 065S 070S 080S 095S
4
18 35
3
100 N/A 173
GAC/H
035S / 040S / 045S / 050S
GAC
055S
GAC/GAH 110S 115S 125S 140S 110D 125D 140D 160D 185D 210D
4
35 50
3
173 250 325
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
1.1.- TECHNICAL DATA
FAN DATA
HYDRAULIC CIRCUIT
(***) Only in units with Hydronic module
Low pressure pump
Type Stainless steel threaded centrifugal pumps
High pressure pump
Expansion vessel
Type Fixed membrane expansion vessel
Max. pressure (bar)
Capacity (dm3)
Bu󰀨er tank
Type Isolated steel tank
Safety valve set (bar)
Volume (dm3)
Airow rate (m3/h) Airow rate (m3/h)
Pressure (Pa)
Pressure (Pa)
Low pressure pump
Type Stainless steel threaded centrifugal pumps
High pressure pump
Expansion vessel
Type Fixed membrane expansion vessel
Max. pressure (bar)
Capacity (dm3)
Bu󰀨er tank
Type Isolated steel tank
Safety valve set (bar)
Volume (dm3)
1.- GENERAL CHARACTERISTICS

• 16 •
GAH
055S
GAC/H
060S
GAC/H
065S
GAC/H
070S
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
1.1.- TECHNICAL DATA
FAN DATA
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
1.- GENERAL CHARACTERISTICS

• 17 •
GAC/H
080S / 095S
GAC/H
110S
GAC/H
115S
GAC/H
125S
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
1.1.- TECHNICAL DATA
FAN DATA
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
1.- GENERAL CHARACTERISTICS

• 18 •
GAC/H
140S
GAC/H
110D
GAC/H
125D
GAC/H
140D
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
1.1.- TECHNICAL DATA
FAN DATA
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
Airow rate (m3/h)
Pressure (Pa)
1.- GENERAL CHARACTERISTICS