Lennox BALTIC-IOM Air cooled rooftop packaged unit Installation Guide

PDF

Документ

Baltic

Air cooled rooftop packaged units

Installation, Operating and Maintenance

BALTIC-IOM-2022.03-EN

CONTENTS

INSTALLATION, OPERATING & MAINTENANCE

MANUAL

Ref : BALTIC-IOM-2022.03-EN

INTRODUCTION................................................................................................................................................................... 1

GENERAL DESCRIPTION ........................................................................................................................................................... 1

COMPLIANCE WITH REGULATIONS AND DIRECTIVES .............................................................................................................. 1

SAFETY CODES & REGULATIONS .............................................................................................................................................. 1

MACHINE DESIGNATION ......................................................................................................................................................... 2

AIRFLOW LIMITS ...................................................................................................................................................................... 2

EMC DIRECTIVE COMPLIANCE ................................................................................................................................................. 3

F-G AS REGULATION .................................................................................................................................................................. 3

WARRANTY .............................................................................................................................................................................. 3

NOTES FOR UNIT FITTED WITH GAS BURNER ........................................................................................................................... 4

SAFETY .................................................................................................................................................................................... 5

LABELS ..................................................................................................................................................................................... 6

PED DIRECTIVE ........................................................................................................................................................................ 7

MAIN SAFETY RECOMMENDATIONS ....................................................................................................................................... 8

DELIVERY CHECKS .................................................................................................................................................................. 10

RATING PLATE ........................................................................................................................................................................ 10

STORAGE ............................................................................................................................................................................... 10

MAINTENANCE KEY ............................................................................................................................................................... 11

CONDENSATE DRAINS ............................................................................................................................................................ 11

OPERATING LIMITS ................................................................................................................................................................ 12

HANDLING ........................................................................................................................................................................ 13

MANDATORY HANDLING DEVICES ......................................................................................................................................... 13

DIMENSIONS AND WEIGHTS ................................................................................................................................................. 14

LIFTING THE UNIT .................................................................................................................................................................. 15

LIFTING THE ROOF CURBS ..................................................................................................................................................... 17

INSTALLATION .................................................................................................................................................................. 18

PRELIMINARY CHECKS ........................................................................................................................................................... 18

INSTALLATION REQUIREMENTS ............................................................................................................................................. 18

CONNECTIONS ...................................................................................................................................................................... 18

MINIMUM CLEARANCE AROUND THE UNIT .......................................................................................................................... 19

RECOMMENDATIONS FOR DUCTS CONNECTIONS ................................................................................................................. 20

PACKING LONG DISTANCE (OPTION) ..................................................................................................................................... 21

CUSTUMER WIRING .............................................................................................................................................................. 22

INSTALLATION ON A ROOFCURB ....................................................................................................................................... 24

TYPE OF ROOFCURB .............................................................................................................................................................. 24

CURBING AND FLASHING ....................................................................................................................................................... 25

TRANSITION CURB ................................................................................................................................................................. 28

FOAM INSULATION INSTALLING ............................................................................................................................................. 28

FOAM GASKET INSTALLING.................................................................................................................................................... 28

ELECTRICAL CONNECTION ..................................................................................................................................................... 28

INSTALLATION ON ADJUSTABLE ROOFCURB ......................................................................................................................... 29

HEAT RECOVERY ............................................................................................................................................................... 31

SENSOR MOUNTING ......................................................................................................................................................... 36

WATER CONDENSING ....................................................................................................................................................... 37

SENSOR MOUNTING ......................................................................................................................................................... 42

CO2 OR ADVANCED ENTHALPIC CONTROL PACK SENSOR ..................................................................................................... 42

ECONOMISER AND EXTRACTION ....................................................................................................................................... 43

COMMISIONING ............................................................................................................................................................... 44

OPERATING LIMITS ................................................................................................................................................................ 44

CASING CONDENSATION RISK ............................................................................................................................................... 45

BEFORE TURNING ON THE POWER ........................................................................................................................................ 46

POWERING THE UNIT ............................................................................................................................................................ 46

CLIMA TIC™ CONFIGURATION ................................................................................................................................................ 47

EDRIVE VENTILATION ........................................................................................................................................................ 49

E D RIVE ™ ASSEMBLY INSTRUCTIONS & SPECIFICATION (AC VERSION ) .................................................................................................... 49

E DRIVE COUPLING DIMENSIONS (AC VERSION) ..................................................................................................................... 50

E D RIVE ™ AIRFLOW READING ........................................................................................................................................................ 50

E D RIVE ™ FAN INVERTER CONFIGURATION (AC VERSION ) ................................................................................................................... 50

RIVE

™

UNIT OPERATING RANGES

(AC

VERSION

) ........................................................................................................................... 51

G AS UNIT E D RIVE ™ OPERATING RANGES (AC VERSION ) ..................................................................................................................... 51

FRESH AIR WOOD ............................................................................................................................................................. 52

INSTALLING ........................................................................................................................................................................... 52

WIND DIRECTION .................................................................................................................................................................. 52

FILTERS ............................................................................................................................................................................. 53

FILTER REPLACEMENT ........................................................................................................................................................... 53

REFRIGERANT CIRCUIT ...................................................................................................................................................... 54

GENERIC REFRIGERANT SKETCH ............................................................................................................................................ 54

PREHEATING OF THE CRANKCASE HEATERS .......................................................................................................................... 56

ELECTRONIC EXPANSION VALVE ............................................................................................................................................ 56

HEATING OPTION .............................................................................................................................................................. 57

HOT WATER COIL................................................................................................................................................................... 57

ELECTRIC HEATERS ................................................................................................................................................................ 58

ELECTRICAL PREHEATER ........................................................................................................................................................ 59

ATMOSPHERIC GAS BURNER ................................................................................................................................................. 60

PRESSURE ADJUSTMENTS ON HONEYWELL PRESSURE REGULATING VALVE TYPE VK 4105 G............................................... 71

LOW HEAT INJECTION PRESSURE CHECKS ............................................................................................................................. 72

B URNER SAFETY CHECKS .............................................................................................................................................................. 73

CONDENSING GAS BURNER................................................................................................................................................... 74

RECOVERY WATER COIL ........................................................................................................................................................ 84

MAINTENANCE DIAGNOSTIC ............................................................................................................................................. 85

MAINTENANCE PLAN ........................................................................................................................................................ 89

WARRANTY ....................................................................................................................................................................... 93

TERMS AND CONDITIONS ...................................................................................................................................................... 93

LIFETIME OF THE EQUIPMENT ............................................................................................................................................... 93

DISPOSAL OF THE EQUIPMENT.............................................................................................................................................. 93

Original version is the English one.

Other versions are translations.

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 offender assuming the manufacturer's responsibilities.

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 used (except in operation of this product), reproduced, issued to or made available to third parties without the prior written agreement of LENNOX.

GENERAL DESCRIPTION

The BALTIC range is an air cooled rooftop packaged unit designed for comport air conditioning.

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 CODES & REGULATIONS

The unit is designed for outdoor installation only. The unit must be installed in accordance with local safety codes and regulations and can only be used in well ventilated area.

Inspections and requalification according pressure equipment directive must follow the local regulations where the unit is installed. Commissioning, monitoring, periodic verification and requalification obligations may be made mandatory in some countries. Please refer to it when installing the equipment.

You must read and be familiar with this operating manual prior to set up the equipment and commission the unit. Please closely follow the instructions.

We would like to stress the importance of training with respect to the correct handling of the unit.

Please consult LENNOX on the options available in this field.

It is important that this manual is stored in a permanent location in the vicinity of the unit

BALTIC-IOM-2022.03-EN 1

INTRODUCTION

MACHINE DESIGNATION

B A C 0 6 5 D N M 5 M

M 400V/3/50

BA BALTIC

5 Revision number

C Cooling only unit

H Heat pump unit

H HFO GAS

N Without refrigerant

P R32

S 1 circuit

D 2 circuits

T 3 circuits

F 4 circuits

Model designation

C BOX D BOX E BOX E+ BOX

025 030 040 042 045 055 057 065 075 085 095 115 125

AIRFLOW LIMITS

C BOX

D BOX

E BOX

E+ BOX

115

125

BALTIC-IOM-2022.03-EN

6660

9500

12900

13800

14700

3500

3780

4140

5000

5940

11100

13500

14500

19500

22000

23500

4200

5700

6300

6900

7100

8300

9900

13100

17000

19000

23000

24500

5600

6800

8400

9700

11200

13100

16000

22000

23000

24500

5600

6800

10000

9700

11200

16000

INTRODUCTION

EMC DIRECTIVE COMPLIANCE

WARNING:

This equipment is a “B class” according EMC Directive. In an industrial environment, this device can create radio electrical noise. In this case, the owner can be asked to take appropriated actions.

The units comply with the most stringent environmental standards according to the product's Declaration of Conformity.

This applies to all units installed with nominal amps below <75A:

• The short-circuit rate Rsce=33 is defined 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=0.30 Ω is defined by EN 61000-3-11 standard relative to the voltage variation, fluctuation and flicker readings. The connection to the supply is a conditional connection submitted to the preliminary agreement of the power supply local provider.

The differences 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 differences do not alter the results.

F-Gas REGULATION

PLEASE READ THE SAFETY DATA SHEET OF THE REFRIGERANT BEFORE ANY INTERVENTION OR INSTALLATION OF THE MACHINE.

Operators of refrigeration equipment’s must comply with the obligations defined in

• Regulation on Fluorinated greenhouse gases (F Gas)

• Regulation on substances that deplete the ozone layer

Non-compliance with these requirements is an offence and liable of financial penalties.

Moreover, in case of problem it is mandatory to prove to the insurance company that the equipment complies with the F gas Regulation, as well as that all measures have been taken to safeguard people, environment and property.

WARRANTY

The warranty of the unit is subject to the warranty definitions as agreed upon in the order. It is expected that the design and installation of the unit utilizes 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.

• Modifications have been made to the equipment without prior written permission by LENNOX.

• Settings and protections have been modified 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 flow protection device is not fitted.

• The unit maintenance booklet is not complete or not available.

In these circumstances LENNOX is indemnified 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.

The technical information and specifications contained in this manual are for reference only. The manufacturer reserves the right to modify these without warning and without obligation to modify equipment already sold

BALTIC-IOM-2022.03-EN 3

INTRODUCTION

NOTES FOR UNIT FITTED WITH GAS BURNER

THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH LOCAL SAFETY CODES AND REGULATIONS AND CAN ONLY BE USED

IN WELL VENTILATED AREA.

IF MACHINE IS INCLUDING GAS BURNER, MINIMUM CLEARANCE AROUND THE UNIT MUST BE AT LEAST 8 M TO ALLOW A

PROPER COMBUSTION FUMES DILUTION. IF NOT POSSIBLE, THE FRESH AIR INTAKE MUST BE DUCTED AT LEAST 8 M AWAY

FROM THE GAS BURNER EXHAUST.

PLEASE READ CAREFULLY THE MANUFACTURER’S INSTRUCTIONS BEFORE STARTING THIS UNIT

Switchgear must be installed on each unit in accordance with the Machine Directive and the standard

EN 60204.

THIS MANUAL IS ONLY VALID FOR UNITS DISPLAYING THE FOLLOWING CODES:

GB IR GR DA NO FI IS

In case these symbols are not displayed on the unit, please refer to the technical documentation which will eventually detail any modifications required to the installation of the unit in a particular country

BALTIC-IOM-2022.03-EN 4

INTRODUCTION

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 .

Everyone involved in the product life cycle must perform a risk analysis. This applies to manufacturers, installers, maintainers and end-users. If risks are not eliminated or remain at unacceptable levels of occurrence or severity, they must be communicated to the next party (the customer in general) through the drafting of an installation, use, maintenance guide.

In the roof tops, heat is being transported by a pressurized refrigerant, with changes in pressure and temperature. For air cooled roof tops, fans have been provided to discharge heat into the environment. The protection of operating and maintenance personnel was central in the design of the roof top. Safety features have been included to prevent excessive pressure in the system. Sheet metal parts have been fitted to prevent inadvertent contact with (hot) pipes. For air cooled roof tops, the fans are equipped with protective grids and the electrical. The service panels can only be opened using tools.

Notwithstanding that the units 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 roof tops. All operations on the cooling circuit or electrical equipment should be carried out by authorized personnel.

It is essential to follow non exhaustive recommendations hereunder:

• Never work on a unit that is still energized. Wait 15 minutes before working on the machine after a power outage

(discharge of the capacitors).

• Any manipulation (opening or closing) of a shut-off valve must be carried out by a qualified and authorized engineer.

These procedures must be carried out with the unit shut-down.

• Never work on an electrical component 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 off, 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 …) ensure that the power is shut off to avoid automatic restart.

• Before the opening of the refrigerant circuit, check the pressure with manometers or pressure sensors, and purge the circuit in accordance with current environmental directives.

• 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 immediately. 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. The use of the EN 378-2 standard provides you with the state of the art with regard to the essential safety requirements of the

Machine Directives and PED.

• 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 specified 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 nidron or dry nitrogen.

• Do not unweld or flame cut the refrigerant lines or any refrigerant circuit component until all refrigerant (liquid and vapor) has been removed from roof top. Successive purges with a neutral gas (such as dry nitrogen) are recommended to remove all traces of refrigerant. Refrigerant in contact with an open flame produces toxic gases.

• Do not siphon refrigerant

• Wearing PPE is mandatory (glasses, cuffs, gloves, masks). Avoid splashing refrigerant on the skin or in the eyes. Wash any spills from the skin with soap and water. If liquid refrigerant enters the eyes, immediately and abundantly flush the eyes with water and consult a doctor

BALTIC-IOM-2022.03-EN 5

INTRODUCTION

LABELS

The rooftop may be marked with the following warning labels to alert to potential hazards (on or near the potentially hazardous part). The rooftop may include the following labels

High temperatures Low temperatures Rotating parts Sharp parts

Electrical Voltage A2L: slightly flammable

Non-flammable liquefied gas

(high pressure)

Flammable liquefied gas

(high pressure)

Don’t walk on it

Wear of PPE

(Personal protective equipment)

Warning

Inflammable dusty filters

Gravity center

Protection by water filter mandatory

Warning main switch supplied from bottom

Protection by strainer filter mandatory

EUROVENT certification

Don’t strap

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)

Regularly check that the warning labels are still in the correct positions on the machine and replace them if necessary.

BALTIC-IOM-2022.03-EN 6

INTRODUCTION

PED DIRECTIVE

For units covered by the Pressure Equipment Directive (see EU Declaration of Conformity).

Warning:

Attention: 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. Carry out a test to ensure the electrical power supply is effectively turned off when the pressure switch attains its set value.

In case of installation in a seismic zone or in a zone which may be effected by violent natural occurrences such as storms, tornados, flood s, 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.

The equipment is not designed to resist fire. The installation site will therefore have to respect valid standards about protection against fire (emergency instructions, map…).

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 sufficient anti-corrosion protection.

To respect a sufficient 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

For technical reasons, it is not possible to carry out hydrostatic tests on all our units. Our rooftops are hermetically sealed products according to the definition of the F-Gas directive and certain local regulations such as CH35 in France.

Leak tests are carried out as a compensatory measure. (The entire circuit is checked using leak detectors). For machines charged with refrigerant, at the end of the test, an HP test is carried out in the factory to make sure the pressure switch is working properly.

Before any work is carried out on the refrigeration circuit, the dry air or nitrogen pressure our units are supplied with must be released (For units not charged with refrigerant in the factory.)

If a valve is fitted, the emissions of refrigerant via the safety relief valves must be channeled to the exterior of the machine room. The valve should be sized and connected in compliance with current standards.

Installation and maintenance of these machines must be carried out by personnel qualified to work on refrigeration equipment.

10.

All interventions must be carried out in conformity with valid safety regulations (e. g.: 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 identified.

12.

Ensure that the installation zone (room or area) of the machine has restricted access and ensure the good condition of the covering.

7 BALTIC-IOM-2022.03-EN

INTRODUCTION

MAIN SAFETY RECOMMENDATIONS

All work on the unit must be carried out by a qualified and authorized employee.

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

WORK ON THE UNIT:

The risk analyses of our machines are carried out considering operation in a standard environment with unpolluted air. For other applications, which do not meet this criterion (Kitchen, industry, ...) please contact your local sales representative.

• 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.).

WORK ON THE ELECTRICAL SYSTEM:

• Work on electric components shall be performed with the power off by employees having valid electrical qualification and authorization.

WORK ON THE REFRIGERATING CIRCUIT(S):

• Monitoring of the pressures, draining and filling of the system under pressure shall be carried out using equipment designed for this purpose and suitable for the refrigerant contained in the rooftop.

• 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 unbracing 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 qualified brazier. The brazing shall comply with standard EN1044 AG107 (minimum

30% silver).

REPLACING COMPONENTS, EQUIPMENT AND PIPING:

• Replacement shall be carried out using spare parts, or using parts approved by Lennox.

• Only the refrigerant shown on the manufacturer ’ s nameplate shall be used.

PARAMETERING AND CONTROL:

• For any intervention related to parameterization, controls and unit operation management, refer to “ Climatic Roof-Top and

Unitary ” user manual.

FILTERS:

• Choose the filters fire classification ’ s according to local regulations

BALTIC-IOM-2022.03-EN 8

INTRODUCTION

TRANSPORT – HANDLING

• Never lift the unit without forklift protections

• Remove the forklift protection before installation

• If access to the installation is difficult, provide guard rail. This recommendation is valid for installations in general and for return and curbs. It ’ s also valid to reach other parts of the unit: filters, refrigerant circuit, etc…

• It ’ s advised to fix curbs and roofcurbs to the unit

• Installation of the unit and accessibility must be compliant with the local regulations. Ensure that all access equipment allow maintenance operation in safety (electrical cabinet, main switch, panels, filter, refrigerant circuit…)

• It is strictly forbidden to walk or store equipment or material on top of the rooftop unit

• Equipment designed to withstand transport and handling according to the established protocol (for the handling protocol, please refer to the installation instructions for the relevant product range).

• All unloading operations must be carried out with suitable equipment (crane, forklift truck, etc.).

• When using a forklift truck, you must respect the positions and the direction of handling indicated on the products.

• The equipment must be handled with care to avoid damage to the bodywork, pipework, condenser, etc.

ROOFTOP INSTALLATION IN HEAVY WIND LOCATIONS

• The roofcurbs (vertical & horizontal) and rooftops are designed to withstand winds up to 80 km/h. Above this limit, it’s recommended to take appropriate actions to secure the installation.

• Ensure the fresh air inlet does not face prevailing wind direction.

COMMISSIONING:

• It must only be carried out by trained refrigeration engineers.

• Don’t forget to open the insulation valve on the liquid line before starting the unit

FAN COMPARTMENT:

• Stop the power before accessing the fan compartment.

Warning: the unit is working under pressure. Never open the panels when the unit is working. Even after shutting down the unit, wait for 2 minutes until the fans are completely stopped before opening any panel.

GAS:

• Any work on gas module must be carried out by qualified personnel

• A unit with gas module must be installed in accordance with local safety codes and regulations and can only be used in planed installation conditions for outdoor.

• Before commissioning this type of unit, it ’ s mandatory to ensure that the gas distribution system is compatible with the adjustment and settings of the unit.

WARNING:

• The units are not designed to resist to a fire. The installation site must comply with the standards relating to fire protection.

• In case of installation of the units in an area recognized as being potentially at risk for natural phenomena (tornado, earthquake, tidal wave, lightning...), please follow the standards and regulations, and provide the necessary devices to prevent from these risks.

• In the event of fire, refrigerating circuits are liable to rise in pressure above the maximum working pressure and release refrigerant and oil. Please take this into account in your risk analyses.

BALTIC-IOM-2022.03-EN 9

INTRODUCTION

DELIVERY CHECKS

On receipt of a new equipment please check the following points. It is the customer ’ s responsibility to ensure that the products are in good working order:

• The exterior has not been damaged in any way.

• The lifting and handling equipment are suitable for the equipment and comply with the specifications of the handling instructions enclosed here-in.

• Accessories ordered for on-site installation have been delivered and are in good working order.

• The equipment supplied corresponds to the order and matches the delivery note.

If the product is damaged, exact details must be confirmed in writing by registered post to the shipping company within 48 hours of delivery (working days). A copy of the letter must be addressed to Lennox and the supplier or distributor for information purposes. Failure to comply will invalidate any claim against the shipping company.

RATING PLATE

The rating plate provides a complete reference for the model and ensures that the unit corresponds to the model ordered. It states the electrical power consumption of the unit on start-up, its rated power and its supply voltage. The supply voltage must not deviate beyond:

+5/-5%. The start-up power is the maximum value likely to be achieved for the specified operational voltage. The customer must have a suitable electrical supply. It is therefore important to check whether the supply voltage stated on the unit's rating plate is compatible with that of the mains electrical supply. The rating plate also states:

• year of manufacture

• weight of the unit

• type of refrigerant used + GWP*

(*Global warming potential)

• required charge for each circuit

• operating Pressure min/max

• operating Temperature min/max

CE marking: 7 possible cases

- CE

- CE1312

-CE0038 or CE0094

-CE0038 or CE0094 + CE1312

- Absence of CE marking (outside the EC only)

This product is used for Air Conditioning. Contains fluorinated greenhouse gases covered by the Kyoto protocol. Hermetically sealed.

STORAGE

When units are delivered on site they are not always required immediately and are sometimes put into storage. In the event of medium to long-term storage, we recommend the following procedures:

• Ensure that there is no water in the hydraulic systems (for water condensing rooftops) .

• Keep the heat exchanger protection if any.

• Keep protective plastic film in position.

• Ensure the electrical panels are closed.

• Keep all items and options supplied in a dry and clean place for future assembly before using the equipment.

• Store the unit on an appropriate place (flat surface).

• Storage temperature must be respected according to the information given on the rating plate

It is strongly recommended to store units is a dry, sheltered place (in particular for units that will be installed indoor).

BALTIC-IOM-2022.03-EN 10

INTRODUCTION

MAINTENANCE KEY

On delivery we recommend that you keep the key which is attached to an eyebolt in a safe and accessible place. This allows you to open the panels for maintenance and installation work.

The locks are ¼ turn + then tighter.

CONDENSATE DRAINS

The condensate drains are not assembled when delivered and are stored in the electrical panel with their clamping collars.

To assemble them, insert them on the condensate tray outlets.

The drains must be installed in vertical position.

BALTIC-IOM-2022.03-EN 11

INTRODUCTION

OPERATING LIMITS

MACHINE OPERATING LIMITS

The machine must work without thermodynamics with an outside air between -20°C and 50°C

THERMODYNAMIC OPERATING LIMITS

Heating mode

Outdoor air temperature

° C – Outdoor air temperature

° C –

Cooling mode

Coil indoor inlet temperature (°C)

BALTIC-IOM-2022.03-EN 12

HANDLING

MANDATORY HANDLING DEVICES

Handling slings to guide the unit towards the roofcurb

Vacuum lifting beam to position the unit

COMPLIANT

BALTIC-IOM-2022.03-EN

NON COMPLIANT

HANDLING

DIMENSIONS AND WEIGHTS

MACHINE

C BOX

D BOX

E BOX

E+ BOX

Length (mm)

2300 +/-15

2810 +/-15

3690 +/-15

3690+/-15

Width (mm)

2260 +/-15

C BOX

Height (mm)

1260 +/-15

1620+/-15

Width with hood

(mm)

Transport length

(mm)

Transport Width

(mm)

Transport Height

(mm)

2710+/-20

2310

2810

3690

2309

2364

1260

1619

D BOX E BOX E+ BOX

BAH – Air cooled 25 30 40 42 45 55 57 65 75 85 95 115 125

Weight of basic units without any options.

600 620 660 660 860 860 920 920 1150 1150 1350 1350 1350

Weight of basic units without any options. All weights are given in kg (+/- 5%).

Individual weight of a given rooftop is indicated on the rating plate and on the sale’s offer.

For each product to be lifted, check in advance the compatibility between the load and the capacity of the handling equipment.

BALTIC-IOM-2022.03-EN 14

HANDLING

LIFTING THE UNIT

LIFTING THE UNIT WITH A CRANE

LIFTING SHACKLES DIMENSIONS

Use lifting shackles on each lifting lug located on each angle of the unit. Maximum diameter of the ring shaft = 20 mm

LIFTING BELTS/STRAPS LENGTH

The unit must be lifted using spacing beams to avoid the belts damages to the casing. Spacing beams must have a length equal to the machine width – i.e. 2250 mm.

Spacer Beam

BALTIC-IOM-2022.03-EN 15

HANDLING

FORKLIFT PROTECTIONS

Do not remove the unit plastic cover while lifting.

DO NOT LIFT THIS SIDE

Do not lift the unit by the side (coil end side or drain pan outlet side). This will damage the unit.

Lift the unit on the long side using a forklift with dimensions according to the figure below.

Do not remove the unit plastic cover while lifting.

REMOVING THE FORKLIFT PROTECTION LOCATED UNDER THE MACHINE (Units C, D, E, E+)

Before installation, remove the forklift protection which is located under machine desk.

IMPORTANT note about forklift protection removal

Take care not to hurt anybody when removing the forklift rails.

Locate the machine on a safe area while removing the forklift rails from the machine

WARNING: NEVER LIFT THE UNIT WITHOUT FORKLIFT PROTECTIONS

REMOVE THE FORKLIFT PROTECTIONS BEFORE INSTALLATION

BALTIC-IOM-2022.03-EN 16

HANDLING

LIFTING THE ROOF CURBS

Do not install the unit on the refrigeration side on Roofcurb.

DUCTING CONNECTION DETAILS

The supply and return air ducts can be secured to the 30 mm flanges at the bottom of the roofcurb. Any ducting weight above

100 kg must be fixed independently to other building frames.

Minimum distance : 30 mm

BALTIC-IOM-2022.03-EN 17

INSTALLATION

PRELIMINARY CHECKS

Before installing the equipment, the following points MUST be checked:

• Have the forklift protections been removed?

• Is there sufficient space for the equipment?

• Is the surface on which the equipment is to be installed sufficiently solid to withstand its weight? A detailed study of the frame must be made beforehand.

• Do the supply and return ductwork openings excessively weaken the structure?

• Are there any obstructing items which could hinder the operation of the equipment?

• Does the electrical power available correspond to the equipment's electrical specifications?

• Is drainage provided for the condensate?

• Is there sufficient access for maintenance?

• Installation of the equipment could require different lifting methods which may vary with each installation (helicopter or crane). Have these been evaluated?

• Ensure that the unit is installed in accordance with the installation instructions and local applicable codes.

• Check to ensure that the refrigerant lines do not rub against the cabinet or against other refrigerant lines.

In general, make sure no obstacles (walls, trees or roof ledges) are obstructing the duct connections or hindering assembly and maintenance access

INSTALLATION REQUIREMENTS

The surface on which the equipment is to be installed must be clean and free of any obstacles which could hinder the flow of air to the condensers:

• Avoid installing two units side by side or close to each other as this may restrict the airflow to the condensers.

• Uneven surfaces are prohibited. The surface must be flat and respect a maximal flatness of 0.5mm per linear meter (in both directions length and width).

• The entire surface of the chassis must rest on a support (except for the Lennox PIED option provided for this purpose).

• For the installation of a machine without the roofcurb or box supplied by Lennox, it is imperative that the load of the machine is evenly distributed under the entire frame.

Before installing a packaged Rooftop unit, it is important to understand:

• The direction of prevailing winds

• The direction and position of air flows.

• The external dimensions of the unit and the dimensions of the supply and return air connections.

• The arrangement of the doors and the space required to open them to access the various components

CONNECTIONS

• Ensure that all the pipework crossing walls or roofs are secured, sealed and insulated.

• To avoid condensation problems, make sure that all pipes are insulated according to the temperatures of fluids and type of crossed premises.

NOTE: The protection sheets fitted to the finned surfaces must be removed prior to start up

The customer must provide the appropriate equipment to protect the supply line to the unit. A differential of 300 mA is recommended.

If the unit is fitted with variable speed fan condensers or variable speed pumps or compressors, a type B differential is recommended.

BALTIC-IOM-2022.03-EN 18

INSTALLATION

MINIMUM CLEARANCE AROUND THE UNIT

Figure below shows the required clearances and service access around the unit.

NOTE: Ensure the fresh air inlet does not face prevailing wind direction

• In general, the air inlet and outlet should not be obstructed.

•

It is also important that there are no obstructions above the fans of the unit.

•

Make sure that the fresh air duct is not in the same direction as the prevailing winds.

•

If machine is including gas burner, minimum clearance around the unit must be at least 8 m to allow a proper gas flue dilution. If not possible, the fresh air intake must be ducted at least 8 m away from the gas burner exhaust.

•

In case of extraction option, it is recommended to duct fresh air intake. In order to ensure good air quality, it is recommended to separate fresh air and exhaust air by at least 8m.

•

An approach ramp must be installed if the unit’s installation requirements tell that it's necessary to reach the main switch, the electrical cabinet, the compressor and the ventilation compartment. This recommendation is valid for all type of installations.

• It is also important to respect a minimal clearance of 3 meters above of the unit, to allow a good operation of the outdoor fans.

•

If you have any questions about the implementation, please contact us so that we can assist you.

*: Add 1000 mm if the units are equipped with gas burner

BALTIC-IOM-2022.03-EN 19

INSTALLATION

RECOMMENDATIONS FOR DUCTS CONNECTIONS

Some rules must be respected for the connections between ducts and unit.

Whatever the supply configuration is, respect a minimal duct’s length (D) of 2m before any elbow or any duct’s diameter change

Horizontal supply

GOOD CONNECTION

Vertical supply

GOOD CONNECTION

EXTRACTION

> 8m

It is recommended to sheath the exhaust air by at least 8m (according to local regulations) to escape the fresh air inlet when the input-output are on the same side.

General remarks:

It is forbidden to walk on the machine.

The machine must not be used to support the ducts.

BALTIC-IOM-2022.03-EN 20

INSTALLATION

PACKING LONG DISTANCE (OPTION)

When one of the long-distance packaging options is ordered (SEI2 / SEI3), remember to remove the supports (e.g. 4-way valves) before commissioning. It is advisable to keep the supports during installation.

BALTIC-IOM-2022.03-EN 21

INSTALLATION

CUSTUMER WIRING

VERTICAL CUSTOMER WIRING

1Remove the indicated plate.

Drill the sheet metal to the diameter of the cable glands

It is recommended to use only one cable per cable gland

2Place the cable glands on the plate.

3Wire through the plate.

4Replace the plate.

BALTIC-IOM-2022.03-EN 22

INSTALLATION

Accessibility for main switch connection on C-Box (size 25-30-40-42)

Accessibility for main switch connection on C-Box. In case of full options control panel, the access to connect the power cable to the main switch can be limited. Therefore a removable hatch is available at the back of the control board (accessible from the ventilation panel). When the cable connection is finished, it’s important to put the hatch back in its initial position.

HORIZONTAL CUSTOMER WIRING

BALTIC-IOM-2022.03-EN 23

INSTALLATION ON A ROOFCURB

TYPE OF ROOFCURB

Non adjustable roofcurb

ADHESIVE GASKET PVC 20X14 TECNOCEL

Adjustable roofcurb

ADHESIVE GASKET PVC 20X15 TECNOCEL

Exhaust roofcurb Multidirectionnal roofcurb

WARNING : a multidirectionnal flowcurb and horizontal extraction flowcurb must be secured to the ground using existing fixing holes on the frame.

WARNING : a roofcurb must be strongly secured to the ground. The contact to the ground must be realized with the entire contact area of the roofcurb (no discontinuous contact).

BALTIC-IOM-2022.03-EN 24

INSTALLATION ON A ROOFCURB

CURBING AND FLASHING

Check that the insulation is continuous, counter flash and seal around the frame as shown

CAUTION: To be effective, the upstream must end below the drop edge. Where pipes and electrical conduits extend through the roof, flashing must conform to local codes of practice

Before installing the equipment, make sure that seals are not damaged and check that the unit is secured to the mounting frame. Once in position, the bottom of the equipment must be horizontal. The installer must comply with local authority standards and specifications.

Gasket

Rooftop

Sealing / fire bulkhead

Insulation

Roofcurb

Building frame

Siding

* Check that the roofcurb height is enough to respect a sealing height of 150mm minimum (French DTU 43.3) considering the building specifications: geometry of the roof, material and thickness of the insulations and other protection layers, slope of the roof…).

BALTIC-IOM-2022.03-EN 25

INSTALLATION ON A ROOFCURB

NON-ADJUSTABLE NON-ASSEMBLED ROOFCURB INSTALLATION

FRAME PARTS PACKING

Different parts are used in the assembly of this roof mounting frame. There are delivered stacked on a pallet. During assembly, all parts must be sealed with a polyurethane sealant.

BALTIC-IOM-2022.03-EN

ADHESIVE GASKET PVC 20X14 TECNOCEL

INSTALLATION ON A ROOFCURB

INSTALLATION

The roof mounting frame provides support when the units are installed in down-flow configurations.

The non-adjustable, non-assembled roof mounting frame can be installed directly on decks having adequate structural strength or on roof supports under deck.

NOTE: frame assembly must be installed flat, leveled within 5mm per linear meter in any direction

ASSEMBLY

Unit support rail

Unit floor insulation + gasket

Air duct

Fixing flange

Roofcurb

SECURING THE FRAME

To ensure proper mating with units, it is mandatory that the roof mounting frame be squared to roof structure as follows:

•

With frame positioned levelled in the desired location on roof trusses, tack weld corner of frame.

•

Measure frame diagonally from corner to corner as shown above. These dimensions must be equal in order for the fame to be square.

•

It is extremely important to sight frame from all corner to ensure it is not twisted across. Shim frame under any low side. The maximum slope tolerance is 5mm per linear meter in any direction.

•

After the frame has been squared, straightened and shimmed, weld or secure the frame to the roof deck. NOTE: It must be securely fastened to the roof as per local codes and regulations.

NOTE: The roofcurb must be attached to the framing in accordance with local regulations.

BALTIC-IOM-2022.03-EN 27

INSTALLATION ON A ROOFCURB

TRANSITION CURB

This roof curb will arrive as a packaged on a pallet and need to be built together.

The part will be connected by special corrosion free nails. It is not possible to connect with standard nail equipment because there is a lot of power needed. Therefore, you need a pneumatic or electric device

WARNING: all the roofcurb must be strongly secured to the ground

The contact to the ground must be realized with the entire contact area of the roofcurb (no discontinuous contact).

All parts must be sealed with polyurethane sealant during assembly.

FOAM INSULATION INSTALLING

• Stick large foam pieces underneath the flat top

FOAM GASKET INSTALLING

• Stick gasket all around the curb flange’s top

Let it free on 200 mm long to enable water drainage

ELECTRICAL CONNECTION

The extraction curbs are fitted with an extraction fan and a pressure sensor used to measure the flow of extracted air. The pressure sensor is directly connected to the first fan of the curb. The fan must be connected to the rooftop machine which is placed on the curb. This connection must be made once the machine is installed on the curb. A waiting wiring harness in the energy-saving compartment of the machine must be pulled to the terminal box on the curb intended for connection. For cable routing and connection to the terminal box, refer to the plan of the curb and the electrical diagram supplied with the machine.

BALTIC-IOM-2022.03-EN 28

INSTALLATION ON A ROOFCURB

INSTALLATION ON ADJUSTABLE ROOFCURB

POSITIONING THE ROOFTOP ON ADJUSTABLE ROOFCURBS

IMPORTANT note: Prior to put the machine, make sure to put a polyethylene gasket on the curb upper flange side (must be delivered in the curb package).

This gasket must be put only on the internal perimeter of the curb

BALTIC-IOM-2022.03-EN 29

INSTALLATION ON A ROOFCURB

CAUTION :

• It’s advised to fix curbs and roofcurbs to the unit.

Above all, ensure that all the adjustable returns are facing outward. They are usually turned inside-out for transport.

Transport position only

If H<430mm and α<10°: Position in position A:

Good installation position

If H>430 or α<10°: Position in high position B

Place the roof mounting frame on the trimmer beam by first lining up the inlet and the outlet opening.

After levelling the frame, secure the adjustable returns on the trimmer.

It is important to center the unit on the roof frame

When the frame is correctly positioned, it is essential to secure the assembly with a disconnected stitched welded seam (20 to

30 mm every 200mm) or M6 self-taping screws in pre-drilled holes along the outside:

Example with welded seam Example with screws

BALTIC-IOM-2022.03-EN 30

HEAT RECOVERY

GENERAL DESCRIPTION

Heat recovery modules (HRM) have following interests:

• in winter season and heating mode, the heat in the extract air is exchanged with the fresh air ;

• in summer season and cooling mode, the heat of the fresh air is transferred to the extract air.

HRM are two plates heat exchanger modules, that differ from each other by their horizontal (HRMH) or vertical (HRMV) configuration.

TRMO is a thermodynamic heat recovery module, included in the machine. Its main interests are:

• a variable fresh air rate from 25 to 100%,

• a high COP in winter when pre-heating the fresh air due to a favorable evaporating temperature, especially with high air flow rate;

• a high EER in summer when pre-cooling the fresh air due to a favorable condensing temperature, especially with high air flow rate.

For those reasons, TRMO will be more suitable than HRMV/HRMH in areas where the difference between indoor temperature and outdoor temperature is low. For example, in Mediterranean areas, where winter temperatures are not very cold or summer temperatures are not very high.

•

ELECTRICAL CONNECTIONS OF THE HEAT RECOVERY UNIT

Two components have to be connected in the space between the plate heat exchanger and the economizer:

For the air pressure switch, connect and tighten the 2 spade-tips on terminal 1 and 3 (no polarity) :

• For the actuator, assembly the two parts of the connector:

BALTIC-IOM-2022.03-EN 31

HEAT RECOVERY

HEAT RECOVERY INSTALLATION C, D, E BOX (ERVF + HRMV)

: x4

2a x2 x6 mm

1. Install the flowcurb.

2. Before installing the rooftop a. Fix the brackets (5 pieces) on the curb by 24 screws(6x16mm); b. ADJUST the position of the attachment bracket so that it is 5 mm above the support surface (without the foam); c. Install the foam (25x10 mm) on the upper part of the flowcurb.

3. a. Fix the lower mounting bar of the heat recovery module using 4 screws (6x16 mm) and remove the side doors; b. Make sure that the foam is not damaged (20x15 mm).

4. Install the rooftop and remove the lifting covers.

5. Place the two upper mounting bars through the two top slots.

6. Install the heat recovery module on the bracket by taking care to position properly the lower mounting bar.

Don't forget to remove the lifting covers from the module.

7. Slide the 'T' plate into the lifting lug and place the bolt through it. On the opposite side, place also the bolt (detail A).

Détail B

8. Finally tighten the heat recovery module with the 4 bolts

8x60mm to compress the foam (2 bolts on the upper mounting bars

(detail B) and the 2 bolts placed in step 7).

Détail A

BALTIC-IOM-2022.03-EN 32

HEAT RECOVERY

THERMODYNAMIC HEAT RECOVERY - INSTALLATION

REFRIGERATION CIRCUIT

Frigorific components access:

Compressor is located in the fix condenser part. Its access for electrical checking and pressure taps (HP and LP) is made through the screwed access door behind the hinged coil.

4-way valve, thermostatic expansion valve, dryer, and sensors are located on the e-

Drive™ supply compartment.

Electrical components:

• For D and E-box, specific TRMO components are located in the electrical box.

• For C-box, specific TRMO components are located on the back of the electrical box, and can be accessible from the supply eDrive™ compartment.

COMMISSIONING

Electrical connections:

• All wire connections are factory made.

Starting up:

• CLIMATIC™ configuration: o Power the unit o Check the configuration of the CLIMATIC™ with the DS in expert mode.

• Flow rate settings:

Make sure that both supply and exhaust air flow are balanced. See section EBHO or ERVF. Balancing is correctly set if: o with Test = 'B.Nom 100%': at 100% fresh air, set the exhaust Flow 3864 = supply flow 3333; o then switch Test = 'B.Nom 0%':

▪ reduce coefficient 3866 until the louvers are closed;

▪ then if the flow (supply and exhaust) is far from the previous flow settings, set coefficient 3335;

▪ finally, repeat step 1 and 2 to obtain a constant flow whatever the fresh air mode. o same settings have to be realized for reduced flow - 3334 and 3865.

WARNING! During the settings, wait until the economizer is fully closed or opened, since it takes 1-2 minutes to switch.

• Start the TRMO circuit (circuit 3): switch Test='C3--Cool' o check the sense of rotation of the circuit 3 compressor; o check frigorific values (HP, LP, overheating and subcooling).

• Repeat the last operations with Test='C3--Heat'

BALTIC-IOM-2022.03-EN 33

HEAT RECOVERY

SERVICE DIAGNOSTIC

REFRIGERATION

Fault

Low LP and LP cut out

Possible causes and symptoms

Alarm 317: main frigorific issue

Alarm 327: too low LP

Solution

Lack of charge, obstructed components

Freezing: wait that coil is defrosted by exhaust air;

Air flow too low on evaporating side (too low speed rate / fouled filter or coil).

HP problem and HP cut out

Incorrect airflow rates

Check fan (exhaust or supply) function of the mode (Amps) and also filter.

Refrigerant charge too high

Check the refrigerant charge load according to the refrigerant load table.

See also frigorific diagnostic of BALTIC™ section 'Refrigeration'.

INDOOR OR EXHAUST FAN BLOWER:

For both indoor supply fan and exhaust fan, same faults, causes and solutions are expected. See diagnostic of 'Indoor fan blower'.

HEAT RECOVERY CONTROL

CONFIGURATION

Configuration of CLIMATIC™ with the DS in expert mode for TRMO (with a modulating exhaust fan):

3813 RECOV. = Comp. for TRMO

3815 EXHAUST = Modulate for both ERVF & EBHO

3816 KIT

3817 Motor to be checked function of your need

3818 Fan

USE

Protection :

• Operating envelop Protection: compressor stopped during 6 minutes. o 328: min HP = 20.5°Ccondensation; o 329: max HP = 62°C condensation; o 319: min LP = between -24.5°C and 1.6°C (function of the condensation temperature) during 5 min => freezing or air flow on evaporator issue; o 327: max LP = 26°C. o 317: limit LP -27°C during 120 sec => frigorific failure (lack of refrigerant /closed components)

• Anti-freezing Protection consist in defrosting the exhaust coil in heating mode with the extract air.

Control

• No specific parameters have to be set for TRMO control.

• Operation: o TRMO runs if there is heating or cooling needs; o above 50% fresh air, TRMO compressor has priority to start; o under 15°C return or under 20% fresh air, TRMO compressor is not authorized to start.

BALTIC-IOM-2022.03-EN 34

HEAT RECOVERY

ENERGY RECOVERY INSTALLATION (ERVF+HRMV) ON UNITS E+ BOX

2c x4

2a x6

1. Install the flowcurb

2. Before installing the rooftop: a. Fix the brackets (5 pieces) on the curb by 24 screws

(6x16mm); b. ADJUST the position of the attachment bracket so that it is 5 mm above the support surface (without the foam); c. Install the foam (25x10 mm) on the upper part of the flowcurb.

x2 mm

3. a. Fix the lower mounting bar of the heat recovery module using 4 screws (6x16 mm) and remove the side doors; b. Make sure that the foam is not damaged (20x15 mm).

4. Install the rooftop and remove the lifting covers

5. Place the two upper mounting bars through the two top slots.

6. Install the heat recovery module on the bracket by taking care to position properly the lower mounting bar

Don't forget to remove the lifting covers from the module.

7. Slide the 'T' plate into the lifting lug and place the bolt through it. On the opposite side, place also the bolt.

8. Finally tighten the heat recovery module with the 4 bolts 8x60mm to compress the foam

(2 bolts on the upper mounting bars (detail) and the 2 bolts placed in step 7).

BALTIC-IOM-2022.03-EN 35

SENSOR MOUNTING

CO2 OR ADVANCED ENTHALPIC CONTROL PACK SENSOR

The probe is delivered unassembled on the machine. The installer is responsible for mounting and connecting this sensor.

The device can be installed in dry surroundings (IP20) by screws on the wall surface or on the standard flush mounting box. The recommended installation height is 150…180 cm.

The device position should be selected carefully. All the error factors that can affect to the measurements should be eliminated as well as possible. The following list defines the typical measurement error factors

• direct sun light

• occupant proximity

• air flow coming from windows or doors

• air flow coming from ventilation nozzles

• air flow coming from the flush mounting box

• differential temperature caused by external wall

WIRING

WARNING:

NOTE: CO2 measurement causes a current peak to the supply voltage. This can produce an error to the analogue outputs when using long and thin cables. It is recommended to increase the wire cross section area in long cable situations (e.g. by using four-wire connection) to ensure reliable measurement signal.

Device wiring and commissioning can only be carried out by qualified professionals. Always make the wirings while the power is switched off

For wiring of external sensors (CO2, temperature, humidity), refer to the unit-specific electrical diagram (supplied in the unit cabinet).

AMBIENT TEMPERATURE PROBE (MATS) (C, D, E, E+ BOX)

For the wiring of the external sensors (CO2, temperature, humidity), refer to the unit-specific wiring diagram (supplied in the unit cabinet).

BALTIC-IOM-2022.03-EN 36

WATER CONDENSING

WATER SOURCE HEAT PUMP ONLY

WATER CONNECTIONS

The water circulating pump will be preferably installed upstream so that the evaporator/condenser will be subjected to positive pressure. Inlet and Outlet water connections are indicated on the certified drawing sent with the unit or shown in the sales brochure.

The water pipes connected to the unit must not transmit any radial or axial force or any vibration to the heat exchangers

It is important to follow non exhaustive recommendations hereunder:

• Comply with the water inlet and outlet connections shown on the unit.

• Install manual or automatic air purge valves at all high points in the circuit.

• Install a safety valve as well as an expansion tank to maintain the circuit pressure.

• Install thermometers in both the inlet and outlet water connections.

• Install drain connections at all low points to allow the whole circuit to be drained.

• Install stop valves, close to the inlet and outlet water connections and easily accessible for maintenance.

• Use flexible connections to reduce vibrations transmission.

• After testing for leaks, insulate all pipe work, to reduce thermal leaks and to prevent condensation.

• If the external water pipes are in an area, where the ambient temperature is likely to fall below 0°C, insulate the piping and add an electric heater.

• Ensure full earthling continuity

A drainage plug is located at the base of the evaporator. A drainage pipe may be connected to this to enable drainage of evaporator water for service operations or for seasonal shut down.

Connections at the inlet and outlet are Victaulic type.

BALTIC-IOM-2022.03-EN 37

WATER CONDENSING

W

ATER ANALYSIS

The water must be analyzed, the water circuit installed must include all items necessary for treatment of the water: filters, additives, intermediate exchangers, bleed valves, vents, isolating valves etc... Depending on the results of the water analysis

WARNING:

We do not advise operation of the units with open loops which can cause problems with oxygenation, or operation with untreated ground water

Use of untreated or improperly treated water can cause deposits of scale, algae and sludge or cause corrosion and erosion. It is advisable to call in a qualified water treatment specialist to determine what kind of treatment will be necessary. The manufacturer cannot accept liability for damage caused by the use of untreated or improperly treated water, salt water or brine.

Here are our non-exhaustive recommendations given as an indication:

• No NH4+ ammonium ions in the water, they are very detrimental for copper. <10mg/l

• Cl - Chloride ions are detrimental for copper with a risk of perforations by corrosion by puncture. < 10 mg/l.

• SO42 - sulphate ions can cause perforating corrosion.< 30 mg/l.

• No fluoride ions (<0.1 mg/l).

• No Fe2+ and Fe3+ ions with dissolved oxygen. Dissolved iron < 5 mg/l with dissolved oxygen < 5 mg/l. Over those values, it means a corrosion of steel which may generate a corrosion of copper parts under deposit of Fe – this is mainly the case with shell and tube heat exchangers.

• Dissolved silicon: silicon is an acid element of water and can also lead to corrosion risks. Cont ent < 1mg/l.

• Water hardness: TH >2.8 K. Values between 10 and 25 can be recommended. This will facilitate scale deposit that can limit corrosion of copper. TH values that are too high can cause piping blockage over time.

• TAC< 100.

• Dissolved oxygen: A ny sudden change in water oxygenation conditions must be avoided. It is as detrimental to deoxygenate the water by mixing it with inert gas as it is to over-oxygenate it by mixing it with pure oxygen. The disturbance of the oxygenation conditions encourages destabilization of copper hydroxides and enlargement of particles.

• Specific resistance – electric conductivity: the higher the specific resistance, the slower the corrosion tendency.

Values above 3000 Ohm/cm are desirable. A neutral environment favours maximum specific resistance values. For electric conductivity values in the order of 200-6000 S/cm can be recommended.

• pH: pH neutral at 20°C (7 < pH < 8)

If the water circuit must be emptied for longer than one month, the complete circuit must be placed under nitrogen charge to avoid any risk of corrosion by differential aeration.

ANTIFREEZE PROTECTION

Use glycol/water solution

WARNING:

ADDITION OF GLYCOL IS THE ONLY EFFICIENT WAY TO PROTECT AGAINST FREEZING

The glycol/water solution must be sufficiently concentrated to ensure proper protection and prevent formation of ice at the lowest outdoor air temperatures expected on an installation. Take precautions when using non-passivated MEG antifreeze solutions (Mono Ethylene Glycol or MPG Mono Propylene Glycol). Corrosion can occur with these antifreeze solutions with oxygen

BALTIC-IOM-2022.03-EN 38

WATER CONDENSING

Drain the installation

WARNING:

It is important to make sure that manual or automatic air bleeders are installed at all the high points of the water circuit. To enable drainage of the circuit, make sure that drain cocks are installed at all the low points of the circuit. To drain the circuit, the drain cocks must be opened and an air inlet ensured.

Note: air bleeders are not designed to admit air

Freezing of a heat exchanger due to cold weather conditions is not covered by Lennox warranty.

Electrolytic corrosion

WARNING:

We would like to draw your attention to the problems of corrosion due to electrolytic corrosion caused by an imbalance between earthing points.

AN EXCHANGER THAT IS PUNCTURED BY ELECTROLYTIC CORROSION IS NOT COVERED BY THE UNIT WARRANTY

Minimum water capacity

WARNING:

The minimum volume of the water circuit must be calculated with the formula here under. If necessary, install a buffer tank.

Proper operation of regulating and safety devices can only be ensured if the volume of water is sufficient

Vt → Minimum water content of the installation (in liters)

Q → Unit cooling capacity (in kW)

N → Minimum power stage

Dt → Maximum temperature drift allowed (in K)

Tmin → Minimum operating time (in seconds)

Wd → Liquid density (in kg/m3)

Cp → Calorific capacity of the liquid (in kJ/(kg.K))

𝑉

𝑡

=

𝑄 × 𝑇

𝑁 × 𝑊

𝑚𝑖𝑛 𝑑

× 1000

× 𝐶

𝑝

× 𝐷

𝑡

Example of use of glycol/water solution in air conditioning installation:

Dt=-6K (standard for an air conditioning application)

Tmin=360s

Liquid = glycol/water solution (Wd= 1000kg/m3 and Cp=4.18 kJ/(kg.K))

Vmini = 86 x Q / (N x Dt)

BALTIC-IOM-2022.03-EN 39

WATER CONDENSING

VICTAULIC CONNECTION ASSEMBLY INSTRUCTION

Be careful not to roll or pinch the seal when installing the half-shells. This would cause a leak.

1Install the bolts and tighten the nuts by hand on them.

2Tighten bolts uniformly passing from one side to the other, until the pads for the bolts are in metal-metal contact. Make sure the shoulders are well engaged in the grooves

It is imperative to tighten the nuts evenly to avoid pinching the gasket.

WATER LOOP CONFIGURATION

Figures below show the 2 water configurations.

Figure 1 indicates all components used as standard:

• The electronic water flow switch

• The water filter

• The pressure taps and drain valves

• The automatic air vent

Figure 2 shows rooftop water loop with Low Water Loop Temperature option.

Hydraulic configuration

Standard

Low Water Loop Temperature Option

3 2

6 6

All Victaulic Connections

Inlet Water Filter

Automatic Air Vent

Electronic Flow Switch

5 4

Pressure Taps and drain Valve

Stainless steel Exchanger

ElectroValve (HP control option)

BALTIC-IOM-2022.03-EN 40

WATER CONDENSING

LOW WATER LOOP TEMPERATURE (OPTION)

In order to operate with low water inlet temperature in cooling mode (i.e.: ground source water loops) it is necessary to control the water flow rate in the heat exchanger to maintain a minimum condensing pressure in the refrigeration circuit.

In cooling mode the Climatic will control the water flow rate in the condenser by monitoring the condensing pressure and by closing the water flow valve accordingly by a 0-10 Volts signal.

This option offers a second opportunity: give the possibility to close the rooftop water loop when compressors are stopped.

Warning: the valve does not allow to do the balance on customer circuit.

Several checks have to be done to avoid creating perturbations on customer circuit:

• Check valve pressure drop at water flow.

• Use variable speed pump.

• Adjust water flow switch set up at small water flow acceptable by the unit.

WATER FILTER REPLACEMENT

It is important that units are serviced regularly by a qualified technician, at least once every year or every 1000 hours of operation.

OUT IN

CAUTION: The water circuit may be pressurized. Observe the usual precautions when depressurizing the circuit before opening it. Failure to observe these rules could lead to accidents and cause injury to service personal

Access for cartridge

Perte de charge - Échangeur à plaque et Filtre à eau

Water flow (m3/h)

Unit size

45 - 55

57-65-75-85

Curve - filter

Curve -exchanger

BALTIC-IOM-2022.03-EN 41

SENSOR MOUNTING

CO2 OR ADVANCED ENTHALPIC CONTROL PACK SENSOR

The probe is delivered unassembled on the machine. The installer is responsible for mounting and connecting this sensor.

The device can be installed in dry surroundings (IP20) by screws on the wall surface or on the standard flush mounting box. The reco mmended installation height is 150…180 cm.

• direct sun light

• occupant proximity

• air flow coming from windows or doors

• air flow coming from ventilation nozzles

• air flow coming from the flush mounting box

• differential temperature caused by external wall

WIRING

WARNING:

Device wiring and commissioning can only be carried out by qualified professionals. Always make the wirings while the power is switched off

For wiring of external sensors (CO2, temperature, humidity), refer to the unit-specific electrical diagram (supplied in the unit cabinet).

AMBIENT TEMPERATURE PROBE (MATS) (C, D, E, E+ BOX)

For the wiring of the external sensors (CO2, temperature, humidity), refer to the unit-specific wiring diagram (supplied in the unit cabinet).

BALTIC-IOM-2022.03-EN 42

ECONOMISER AND EXTRACTION

ECONOMISER

Free cooling is provided through the use of fresh air which is more appropriate than excessive cooling amounts of return air.

The economizer is factory fitted and tested prior to shipment.

It includes two dampers operating from a 24V actuator

RAIN HOOD

It also includes a factory fitted rain hood. Hoods is folded during transportation to limit risks of damage and must be unfolded on site.

EXTRACTION

Installed with economizer assembly, the gravity exhaust dampers relieve the pressure when outside air is introduced into the system. When large amount of fresh air is introduced into the system power exhaust fans can be used to equalize the pressures.

The extraction fan runs when return air dampers are being closed and supply air blower is in operation. The extraction fan runs when outdoor air dampers are at least 50% open (adjustable value). It is overload protected.

NOTE: When horizontal flow configuration is required, the multidirectional roof curb will be installed.

PRINCIPLE SKETCH

MULTIDIRECTIONAL ROOFCURB

PRINCIPLE SKETCH

ENERGY RECOVERY MODULE

FRESH AIR

RETURN AIR

PRINCIPLE SKETCH

RETURN ROOFCURB

EXHAUST AIR

SUPPLY AIR

BALTIC-IOM-2022.03-EN 43

COMMISIONING

The components are located inside the units or in a separate box and must be installed by a qualified engineer.

Note: In case of plate heat exchangers it is mandatory that a filter is installed at exchanger unit entrance. !

These filters must remove all particles with a diameter greater than 1 mm

OPERATING LIMITS

Prior to any operation, please checks the operation limits of the unit These tables will give you all necessary information concerning the operating envelop of the unit.

WARNING: It is very important ensure the units operate well inside these envelopes..

Air Cooled Baltic

Cooling Mode Operating Limits

Size 25 30 40 42 45 55 57 65 75

Max. outdoor temp. at indoor

27°C DB/ 19°C WB

°C

Max outdoor temp with unloading °C

48 46 non 50

Min. outdoor temp. at indoor

20°C DB

Max. entering indoor coil temp. at outdoor 38°C DB

Min. entering indoor coil temp. at outdoor 35°C DB

Heat Pump Mode Operating

Limits

Min. outdoor temp. at indoor

20°C DB (8)

°C

°C Min. entering indoor coil temp. at outdoor 7°C DB

Water Cooled Baltic

Cooling Mode Operating Limits

48 46 non 50

46 46

50 50

-5

-12

Max. inlet water temp at indoor 27°C DB/ 19°C WB

Max. inlet water temp with unloading

°C

45-55-57-65-75-85

115 125

Min. inlet water temp. at indoor 20°C DB °C 25

Max. inlet water temp 100% fresh air at outdoor 35°C

Heat Pump Mode Operating Limits

Min. inlet glycoled water temp. at indoor 20°C DB

°C 38

45-55-57-65-75-85

-15 °C

Min outdoor temp with unloading

Min. entering indoor coil temp. at outdoor 7°C DB

°C

-17

44 BALTIC-IOM-2022.03-EN

COMMISIONING

WARNING: Check that all recommendations related to the paragraph on flammable fluids are followed before commissioning.

All the components must be installed by a qualified technician.

Commissioning must only be carried out by trained refrigeration technician whom qualification certificates are compliant with the local regulation.

CASING CONDENSATION RISK

Depending of the ambient outdoor conditions and the supply air performance of the unit, some condensation on the outside skin of the unit casing may appear. This outside condensation doesn’t affect the good operation of the unit, but can only affect the visual aspect of the unit.

Find below graph with condensation risk limits depending on:

•

Outside Relative Humidity (% HR)

•

Delta temperature (K) between Outdoor dew point temperature and Dry supply air temperature

BALTIC-IOM-2022.03-EN 45

COMMISIONING

BEFORE TURNING ON THE POWER

WARNING: ensure that the power supply includes 3 phases with no neutral

Perform a leak detection with a device suitable for the refrigerant of the machine.

Ensure that the power supply between the building and the unit meets local authority standards and that the cable specification satisfies the start-up and operating conditions displayed on the rating plate.

WIRE CONNECTION TIGHTNESS CHECKS

WARNING: check the wire connection tightness before powering up the unit. Some connections may have loosen during transport

Check the following wire connections for tightness:

• Main switch connections

• Mains wires linked to the contactors and circuit breakers

• Cables in the 24V control supply circuit

• All other connections of the unit

OIL CHARGE

All units are delivered with a complete oil charge, and there is no need to add any oil before start-up or afterwards. Overcharging with oil can cause serious problems on an installation, particularly for the compressors.

The oil type depends on compressor model that depends on the unit size. Use only oil approved and recommended by Lennox

POWERING THE UNIT

Power up the unit by closing the isolator switch.

The fans and compressors direction of rotation is checked during the end of line test. They should therefore all turn in either the right or wrong direction.

WARNING: a compressor rotating in the wrong direction will fail shortly.

If one of the components rotates in the wrong direction, disconnect the power supply at the machine's isolator switch and reverse two of the component ’ s phases on the terminal within the electrical panel.

While starting the unit, fill in the check list sheet of this manual to be sure that the unit correctly installed and ready to operate.

• Check the current values per phase on each fan motor.

• Check the current values per phase on each compressor motor.

• Check suction and discharge pressures and compressor suction temperature.

• Check chilled liquid entering and leaving temperatures if water cooled unit.

• Check outdoor air temperature and indoor temperature.

• Check if DAD is ON.

• Check that the detector has warmed up and that the LED is green.

These verifications should be made as quickly as possible with a stable cooling load, i.e. the cooling load of the installation should be the same as the capacity developed by the unit. Measurements taken without heeding this condition will result in unusable and probably wrong values.

These verifications can only be made once the proper operation of all safety devices and unit controls has been established.

Check if the customer's air ducts are open to be sure the unit is not running with ducts closed. In addition, it is needed to check if the airflow and available static pressure are in accordance with the unit.

BALTIC-IOM-2022.03-EN 46

COMMISIONING

CLIMA TIC™ CONFIGURATION

SETTINGS

1. Supply Air-flow adjustment (depending on customer requirements) a. 3333 = nominal air flow / pressure b. 3334 = reduced air flow / pressure c. 3332 = Manual/Automatic d. 3331 = Nominal/DeadZone/PartLoad/Pressure

2. Exhaust Air-flow adjustment (optional) a. 3864 = nominal air flow b. 3865 = reduced air flow

3. Scheduling (depending on customer requirements) a. Zones & Modes (Night/Day/Day I/ DayII) b. Setpoints per mode

4. Regulation temperature probe selection a. Select the regulation probe (DC, Return, Customer, etc.) in the Room Temp. Config screen

5. Regulation humidity sensor selection (optional) a. Select the regulation sensor (Remote, Customer) in the Room Hum. Config screen

6. Outside temperature probe selection a. Select the outdoor temp probe (Unit, Customer) in the Outside Temp. Config screen

7. Outside humidity sensor selection (optional) a. Select the outdoor hum sensor (Unit, Customer) in the Outside Hum. Config screen

8. Air quality sensor selection (optional) a. Select the air quality CO2 sensor (Remote, Customer) in the CO2 Config screen

9. Remote display configuration a. 3151 = DC simple / DC full / DM

10. Minimum fresh air a. 3121 = minimum opening %

BALTIC-IOM-2022.03-EN 47

COMMISIONING

CHECK:

1 . Air-flow Vs Damper a. Test B.Nom100% : i. adjust the blower speed % (3333) to get the required airflow ii. adjust the exhaust speed % (3864) to get the required airflow b. Test B.Nom0%: i. adjust the damper compensation (3335) to maintain the required airflow even with damper fully closed ii. adjust the damper compensation (3366) to maintain the required airflow even with damper fully closed

2. Filter safety thresholds a. Test B.Nom100% and Test B.Nom0% : read filter ΔP (3442) and adjust the bigger measure multiplied by 2.5 at threshold 3345

3. Frigorific circuit tests a. Cooling mode i. Test C---Cool: (if variable speed compressor option, set speed value)

1. Check circuit pressures and temperatures

2. Check electrical consumptions b. Heating mode i. Test C---Heat: (if variable speed compressor option, set speed value)

1. Check circuit pressures and temperatures

2. Check electrical consumptions

4. Unit option tests a. Electrical Auxiliary heaters (Test H1-1 Full) i. Check supply temperature ii. Check electrical consumption b. Hot Water Auxiliary heaters (Test H1-1 Full) i. Check supply temperature ii. Check valve opening c. Gas burner heaters (Test H1-1 Full) i. Refer to gas burner chapter d. Electrical Fresh-air pre-heaters (Test H2-1 Full) i. Check supply temperature ii. Check electrical consumption e. Hot water eRecovery heaters (Test H2-1 Full) i. Check supply temperature ii. Check valve opening f. TRMO i. Test C3---Cool:

1. Check circuit pressures and temperatures

2. Check electrical consumptions

ii. Test C3---Heat:

1. Check circuit pressures and temperatures

2. Check electrical consumptions g. HRMO (Rotary Wheel) i. Check wheel motor rotation

5. Advanced regulation optimization

WARNING! During the settings, wait until the economizer is fully closed or opened, since it takes 1-2 minutes to switch. a. Compressor ΔT i. Cooling.

1. T est C1c1 Cool: read │Mix -Supply| temp and adjust compressor stage ΔT at menu 3434 ii. Heating.

1. T est C1c1 Heat: read │Mix -Supply| temp and adjust compressor stage ΔT at menu 3444 b. Auxiliary Heaters ΔT (Gas burner or electrical) i. Heating.

1. Test H11: read │Mix -Supply| temp and adjust heaters stage ΔT at menu 3734 c. Staging sequence (compressor/electrical/water/burners) i. Aux Heaters Priority 3731= Never/ Always /OutTemp ii. Pre Heaters Priority 3736= First/Last d. Dynamic setpoint i. 3225= ΔT between customer set point and outdoor temperature e. Fine temperature control i. Smooth 3231= No/ DeadZone/Comfort

Once all the settings have been adjusted, the list of parameters must be downloaded (Wizard tool), stored and signed by the customer.

BALTIC-IOM-2022.03-EN 48

eDrive VENTILATION

eDrive VENTILATION eDrive™ assembly instructions & specification (AC version)

The flexible elastomeric tire is removable without removing the plates The material is natural rubber Temperature range from

-42°C to + 82°C eDrive™ assembly is designed to have no adjustment to be made inside the machine

In case of vertical misalignment one could use metallic washer located under the motor to adjust height

Easy to assemble

Max angular misalignment 4°

BALTIC-IOM-2022.03-EN

Max radial misalignment

3mm

Max axial range 8 mm

Vibration absorbtion

eDrive VENTILATION

eDRIVE COUPLING DIMENSIONS (AC VERSION)

Machine size

Motor size kW

Motor shaft diameter mm

Fan shaft diamete r mm

Coupling

Coupling reference

Coupling type PP

Motor bushing ref

Fan taper

Ref.

C-BOX 1,5 24 25 PV40 2 x Taper lock bushing 28-20 al24 28-20 al25

C-BOX 2,2 28 25 PV40 2 x Taper lock bushing 28-20 al28 28-20 al25

C-BOX 3 28 25 PV40 2 x Taper lock bushing 28-20 al28 28-20 al25

C-BOX 4 28 25 PV40 2 x Taper lock bushing 28-20 al28 28-20 al25

C-BOX 5,5 38 25 PV60 2 x Taper lock bushing 40-25 a38 40-25 al25

D-BOX

D&E BOX

2,2

5,5 to 7,5

PV50

PVP50

1 x Taper lock bushing +

D30

1 x Taper lock bushing +

D30

1 x Taper lock bushing +

D30

1 x Taper lock bushing +

D38

2 x Taper lock bushing

30-25

30-25 al28 al28 al28

40-25 al 38

30-25 al30

E-BOX 9 to 11 38 40 PV 60 40-25 al 40

eDrive™ airflow reading

eDrive is controlling the airflow within the operating range of each kit.

For AC fans airflow rate calculation inputs are rpm and power absorbed output read on the inverter variable bus, while on EC fans it’s based on supply pressure reading..

eDrive™ is protecting the fan & m otor against over-speed & over-amps (AC version) eDrive™ is designed to keep motor and fan in its available operating range thanks to the kit configuration selected in CLIMATIC™ control. The CLIMATIC™ control is limiting rpm & absorbed power. The table below shows the operating ranges per box and kit size.

eDrive™ fan inverter configuration (AC version)

eDrive™ Inverter configuration is prepared in the factory to communicate with CLIMATIC™ & to be configured specifically for the customer machine. e Drive™ Fan inverter parameters are configured via the CLIMATIC™ unit configuration.

This configuration is selecting the proper parameters to run eDrive™ in its operating range depending on fan type & motor siz e.

If ever, the Inverter loose fan control (No Fan or Wrong fan speed & Compressor or Heating stay on), one may check the

Inverter configuration as below:

“0.0” will be displayed in this case on the Inverter instead of the regular “0” or “xxx” rpm Switch to unlock mode:

F700 = 0

F732 = 0

On Inverter, set the TYP parameter to 3 value. (reinitialize the Inverter to the default values) then configure the following setpoints: F800=1

F801=0 F802=11 F803=0

Then switch OFF the whole machine & then switch ON.

BALTIC-IOM-2022.03-EN 50

eDrive VENTILATION

Then the CLIMATIC™ is going to send all the prope r machine configuration to Inverter (motor size, fan type, Imax, safety parameters)

eDrive™ unit operating ranges (AC version)

Box Fan type Motor

(kW)

Efficiency Kit Comment Rpm min Rpm max Qv min. Qv max. Imax

C BOX

- BAH BAC

D BOX

- BAH BAC

E BOX

- BAH BAC

AT 15-11 S

ADH 355 L

AT 15-11 G2L

7,5

5,5

7,5

5,5

2,2

5,5

1,5

0,88

0,87

0,88

0,89

0,80

0,83

0,85

0,87

0,83

0,85

0,87

Fan shaft D30

Fan shaft D40

Fan shaft D30

Fan shaft D40

Gas unit eDrive™ operating ranges (AC version)

Box Fan type Motor (kW) Efficiency Kit Comment

C BOX

- BAH BAC

D BOX

- BAH BAC

E BOX

- BAH BAC

AT 15-11 S

ADH 355 L

AT 15-11 G2L

5,5

7,5

5,5

7,5

1,5

5,5

2,2

0,85

0,87

0,88

0,87

0,88

0,89

0,80

0,83

0,85

0,87

0,83

K1 ADHE 355

ADHE 355

Axe D30

727

826

930

1070

760

898

994

1072

592

690

788

907

1015

651

938

648

774

880

911

553

610

697

882

581

660

738

823

1206

1409

1499

1578

1310

1431

1476

1525

949

1155

1386

1449

1533

929

1501

1302

1385

1378

1417

962

1170

1330

1371

1417

939

1208

1396

1439

3600

3750

4500

5400

6750

5500

6100

7100

8700

7900

9300

11100

13100

10000 13000

10000 15250

10000 17250

10000 19000

4650

5700

6900

7950

8400

6500

3600 4800

3750 6000

4500 7050

5550 8250

3,6

4,9

6,6

8,4

7200 8400

5500 6900

5500 8300

6100 9700

12,2

4,9

6,6

8,4

7100 11500 12,2

9500 13100 16,3

10000 13500 12,2

10000 16000 16,3

10000 17750 17,6

10000 19000 17,6

10000 19000 23

Rpm min Rpm max Qv min. Qv max. Imax

6,6

8,4

12,2

16,3

12,2

16,3

17,6

3,6

4,9

6,6

8,4

12,2

4,9

BALTIC-IOM-2022.03-EN 51

FRESH AIR WOOD

INSTALLING

The fresh air hood has to be opened and secured during commissioning.

The 3 parts of the fresh air hood have to be assembled thanks to self-taping screws delivered in the spare part box Check the proper position of the black seal on the top of the hood cover.

Install the remote fume hoods in a safe place without risk of aspiration of dust, grease, gas and hazardous materials.

WIND DIRECTION

The prevailing wind has to be considered while choosing the machine position on the building roof.

It’s highly recommended to avoid putting the fresh air hood in the prevailing wind direction to avoid water ingress risks. If this is not possible please contact us to require specific water droplet strainer in the hood section.

WARNING: the fresh air hood cover can hurt your head if you don’t pay attention while turning around the unit.

BALTIC-IOM-2022.03-EN 52

FILTERS

FILTER REPLACEMENT

After opening the filter access panel, lift the filter retaining log.

The filters can then be removed and replaced easily by sliding the dirty filters out and clean ones in.

The CLIMATIC controller monitors the pressure drop across the filter.

The following set points can be adjusted depending on the installation.

• “Airflow” in menu 2333 = 25 Pa by default

• “No filter “ in menu 2334 = 50 Pa by default

• “Dirty Filter” in menu 2335 = 250 Pa by default

The actual pressure drop measured across the coil can be read on the Climatic Display DS in menu 2332.

The following faults may be identified

• Fault code (1) Blower, Flow Switch Cut Off, if measured ΔP across the filter and coil is below the value set in menu 2333

• Fault code (4) Blower, Filters, Dirty if measured ΔP across the filter and coil is above the value set in menu 2335

• Fault code (5) Blower, Filters, Missing, if measured ΔP across the filter and coil is below the value set in menu 2334

BE CAREFUL:

Choose the filters' fire classifications according to the local regulations

BE CAREFUL:

Please perform a leak detection.

Please note that filters can generate static electricity and are potentially flammable.

BALTIC-IOM-2022.03-EN 53

REFRIGERANT CIRCUIT

GENERIC REFRIGERANT SKETCH

Depending on the unit size or the selected options, the number of circuits and compressors can change.

The specific principle diagram is at the end of the electrical diagram supplied with the unit.

Some connection valves (Schrader type) are available to load/unload the circuit.

C BOX :

BEV-

BS-

YP-

CA-

FD-

BCD-

B-

YV-

MG-

VAM-

RL-

Indoor coil

Temperature sensor

Expansion valve

Check valve

Filter dryer

Outdoor coil

Low/High pressure switch

Cycle reversal valve

Compressor

Manual valve

Suction line accumulator

BALTIC-IOM-2022.03-EN 54

REFRIGERANT CIRCUIT

D BOX/E/E+ BOX :

Circuit 1

Circuit 2

BEV-

BS-

YP-

CA-

FD-

BCD-

B-

YV-

MG-

VAM-

RL-

Indoor coil

Temperature sensor

Expansion valve

Check valve

Filter dryer

Outdoor coil

Low/High pressure switch

Cycle reversal valve

Compressor

Manual valve

Suction line accumulator

BALTIC-IOM-2022.03-EN 55

REFRIGERANT CIRCUIT

PREHEATING OF THE CRANKCASE HEATERS

It’s important to avoid starting the compressors without preheating of the crankcase heaters. The crankcase heaters are regulated according to the outside temperature (< 16°C).

WARNING:

In case of extended shutdown of the unit (> 6 hours), it is mandatory to power on the unit 8 hours minimum before to start the compressors equipped with crankcase heaters

ELECTRONIC EXPANSION VALVE

Different electronic valves types can be fitted on FLEXAIR range.

C BOX D BOX E BOX E+ BOX

Model designation

Reference E2V30

E3V45

45-55-57-65

E2V30

75 85

E2V30 E3V45

95-115-125

E3V45

ELECTRONIC EXPANSION VALVE ADJUSTMENTS

EEV allows to control superheat in bi-flow operation (see climatic user manual).

WELDING INSTRUCTIONS

Electronic expansion valves are sensitive to dust – strainers must be used in case of replacing.

BALTIC-IOM-2022.03-EN 56

HEATING OPTION

When a heating option is installed, it is recommended to have a pressure drop of at least 100Pa in the supply duct (for example, in the case of a short supply duct, it is recommended to add a grille at the outlet of the duct).

HOT WATER COIL

HYDRAULIC CONNECTIONS

Hot water coils offer fully modulating control through the use of a 3-way valve. The hot water coil, connections and valves are all tested at pressure of 15 bars. Frost protection is provided by forcing the opening the 3-ways valve when supply temperature from hot water coil falls below 8°C and by stopping the outdoor fan when that supply temperature falls below 6°C. In addition to that, the 3-ways is also opened at 10% value if the outdoor temperature falls below an adjustable value.

Hot water coils are always factory fitted, wired and fully tested, prior to shipment.

Hot water coil includes automatic purge system.

The hot water coil is fitted with a three-ways proportional valve and two isolating shut off valves. Two spanners must be used to tighten the connections. One spanner must maintain the valve body when connecting the pipe-work to the main. Failure to do so may damage the pipes joints and invalidates the warranty.

Filling up and starting the system

• Adjust the control for Heating by reducing the simulated ambient temperature down to 10°C

• Check that the red indicators located under the valve actuator are moving correctly with the signal.

• Fill the hydraulic system and bleed the coil using the air vents. Check incoming hot water.

• Check the various connections for possible leaks

FREEZE PROTECTION

1) Glycol for freeze protection

Check the hydraulic system contains Glycol for protection against freezing

GLYCOL IS THE ONLY EFFECTIVE PROTECTION AGAINST FREEZING

The antifreeze must protect the unit and avoid icing under winter conditions.

WARNING: Mono-ethylene glycol based fluids may produce corrosive agents when mixed with air

2) Drain the installation

You must ensure that the manual or automatic air bleeders have been installed on all high points in the system. In order to drain the system, check that all the drain cocks have been installed on all low points of the system

HOT WATER COILS FROZEN DUE TO LOW AMBIENT CONDITIONS ARE NOT COVERED BY THE WARRANTY

ELECTROLYTIC CORROSION

Attention is drawn to the corrosion problems resulting from electrolytic reaction created by unbalanced earth connections

ANY COIL DAMAGED BY ELECTROLYTIC CORROSION IS NOT COVERED BY THE WARRANTY

BALTIC-IOM-2022.03-EN 57

HEATING OPTION

ELECTRIC HEATERS

The electric heater comprises of shielded resistance heaters, which are smooth stainless steel tubes 6 W/cm2 capacity.

High temperature limit control offers overload protection and is set to 93°C and located at less than 150mm after electric heaters. This is provided as a standard feature on the electric heater, with the electric power supply cables made of reticulated silicon rubber, resistant to temperatures up to 200°C.

WARNING: electric heater is connected heater to mains power – risk of electrical shock – switch off the unit prior to open this section

Size C BOX: Standard heat: 18 kW (2 stages), High Heat (Fully modulating): 36 kW

Size D BOX : Standard heat: 27 kW (2 stages), High Heat (Fully modulating): 54 kW

Size E BOX: Standard heat: 27kW (2 stages), High Heat (Fully modulating): 54 kW

Size E+ BOX: Standard heat: 27kW (2 stages), High Heat (Fully modulating): 54 kW

Capacity of the medium and high heat heater can be limited electronically to an exact value through the CLIMATIC

To reduce installation time and hence cost, electric heaters are always factory fitted, fully wired and tested, prior to shipment

380V 400V 420V

Size of the unit

C,D,E,E+

BOX

Module size (kW)

Current (A) Current (A) Current (A)

27.3

41.0

54.7

82.0

26.0

39.0

52.0

77.9

24.7

37.1

49.5

74.2

BALTIC-IOM-2022.03-EN 58

HEATING OPTION

ELECTRICAL PREHEATER

WARNING: electric pre-heater is connected heater to main power – risk of electrical Shock – switch off the unit prior to open this section

Preheater is running only with high fresh air rate under low outdoor ambient temperature (see setpoint in CLIMATIC™ section).

A metallic filter is installed between air filter & electrical resistance to protect against heat radiations.

WARNING: electric pre-heater metallic filter must not be plugged by dust

Amps per model size

S 18 kW

S 24 kW

S 36 kW

H 36 kW

H 48 kW

H 72 kW

C BOX D BOX

25-30-40-42 45-55-57-65

E BOX

75-85

104

E+ BOX

95-115-125

104

BALTIC-IOM-2022.03-EN 59

HEATING OPTION

ATMOSPHERIC GAS BURNER

PRELIMINARY CHECKS BEFORE START-UP

NOTE :

ANY WORK ON THE GAS SYSTEM MUST BE CARRIED OUT BY QUALIFIED PERSONNEL.

THIS UNIT MUST BE INSTALLED IN ACCORDANCE WITH LOCAL SAFETY CODES AND REGULATIONS AND CAN ONLY BE USED

IN PLANED INSTALLATION CONDITIONS FOR OUTDOOR.

PLEASE READ CAREFULLY THE MANUFACTURER’S INSTRUCTIONS BEFORE STARTING A UNIT.

BEFORE COMMISSIONING A UNIT WITH GAS BURNER, IT IS MANDATORY TO ENSURE THAT THE GAS DISTRIBUTION

SYSTEM (TYPE OF GAS, AVAILABLE PRESSURE…) IS COMPATIBLE WITH THE ADJUSTMENT AND SETTINGS OF THE UNIT.

THE GAS MODULE SAFETY CHAIN MUST BE CHECKED BY A PROFESSIONAL BEFORE START-UP OF THE PRODUCT.

CHECK ACCESS AND CLEARANCE AROUND THE UNIT

• Make sure one can move freely around the unit.

• A minimum one-meter clearance must be left in front of the burnt gas exhaust flue.

• Combustion air inlet and burnt gas exhaust(s) must not be obstructed in any way.

• Depending on the operating conditions (prevailing winds), it may be necessary to separate the air inlets from the flue gas outlets (excluding LENNOX supply).

SUPPLY NETWORK PIPE SIZING

MALE THREADED CONNECTION FOR GAS BURNER: 3/4”

Check that the gas supply line can provide the burners with the pressure and the gas flow rate necessary to provide the heating nominal output.

NUMBER OF MALE THREADED CONNECTIONS (3/4”)

UNIT SIZE

S POWER

H POWER

25 30 40 42 45 55 57 65 75

1 1

GAS FLOW - m3/h (for G20 at 20 mbar and 15°C)

85 95 115 125

UNIT SIZE

S POWER

H POWER

25 30 40 42 45 55 57 65 75 85

1.9 3.2 5.7

4.5 5.7 11.5

95 115 125

5.7

11.5

•

The gas supply of a Rooftop gas unit must be realized according to Sound Engineering Practice and the local safety codes and rules.

•

In any case the diameter of pipe-work connected to each Rooftop must not be smaller than the diameter of the connection on the Rooftop unit.

•

Make sure that a shut-off isolation valve has been installed before EACH Rooftop.

•

Check the supply voltage to the exit of the power supply's transformer

BALTIC-IOM-2022.03-EN 60

HEATING OPTION

BLOWER PROBE AND REGULATION

When the unit is equipped with a gas burner and the supply air is blown in from below (directly into the duct or with roofcurb or roofbox), the supply air temperature sensor must be a duct sensor. The position of the sensor must comply with the supplier's recommendations and must be placed at about 2m from the unit

(minimum 1.5m).

Incorrect positioning can cause damage to the burner or operation at low speed. The ductwork must comply with the installation chapter. The supply air regulation in all configurations must be a maximum of 38°C +/- 3°C.

STARTING UP THE GAS BURNER

Purge the pipe-work near the connection on the ignition control valve for a few seconds.

• Check that the unit's treatment “Fan” blower is running.

• Set the control to “ON” This will priorities the gas burner.

• Increase the set temperature (room set point temperature) to a temperature higher than the actual room temperature.

Table - Standard start-up Chronology

Time in seconds

Operations

Control operation sequence

Extraction fan

Smoke extraction fan "ON"

30 to 45 seconds pre-ventilation

Fire-up spark electrode 4s

Opening of the gas valve "High Heat"

Flame propagation towards the ionization probe

If ionization within 5s: Normal running

Otherwise fault on gas ignition control block

After 5minutes, fault reported on the climatic controller

If incorrect sequence, refer to the fault analysis table to identify the problem

BALTIC-IOM-2022.03-EN 61

HEATING OPTION

PRESSURE REGULATOR ADJUSTMENT WITH 300MBAR GAS SUPPLY:

• The Burner must run in High Heat mode for this check.

• Place the tube of the “accurate” manometer on the Inlet press - sure port of the Gas Regulating Valve after having loosened the screw by one turn.

INLET

PRESSURE

MEASURING

PORT

Check and adjust if necessary the valve inlet pressure after gas burner ignition

HIGH HEAT INJECTION PRESSURE CHECKS

Check and adjust if necessary the valve outlet pressure.

The out pressure must be measured on the pressure tap located on the gas injector support bar to avoid the pressure drop due to the elbow after the valve

BALTIC-IOM-2022.03-EN 62

HEATING OPTION

LOW HEAT INJECTION PRESSURE CHECKS

• Switch the control to Low Heat

• Check and adjust if necessary the outlet pressure:

After the adjustment of the low heat, re-verify the high heat, re-position the stoppers and close the pressure ports

Pressure adjustments table for each type of gas (mbar)

Category Supply pressure

Low Heat Injection min.

High Heat Injection

GAS VK4105 G

G20

G25 (Groningue)

G31 (GPL)

GAS 60 and 120kW

G20

G25 (Groningue)

VK4125P

G31 (GPL)

G20

GAS 180 and 240kW

G25 (Groningue)

VK4605P

G31 (GPL)

VALVE ELECTRICAL CONTROL

Check these values with an ohmmeter

20.0 +/- 1

25.0 +/- 1.3

37.0 +/- 1.9

20.0 +/- 1

25.0 +/- 1.3

37.0 +/- 1.9

20.0 +/- 1

25.0 +/- 1.3

37.0 +/- 1.9

3.5 +/- 0.1

5.0 +/- 0.1

14.0 +/- 0.3

3.7 +/- 0.1

5.1 +/- 0.1

15.3 +/- 0.3

3,1 +/- 0.1

3,9 +/- 0.1

12,6 +/- 0.3

8.4+/- 0.2

12.3 +/- 0.2

31.4 +/- 0.6

10.4+/- 0.2

13.1 +/- 0.2

34.3 +/- 0.6

8+/- 0.2

10,4 +/- 0.2

28,3 +/- 0.6

2,90 kΩ 1,69 kΩ

BALTIC-IOM-2022.03-EN 63

HEATING OPTION

BURNER SAFETY CHECKS

Smoke extractor pressure switch Test.

•

With the gas burner running, disconnect the flexible tube fitted to the pressure taping on the pressure switch

•

The Flame must disappear and the extraction fan must carry on running.

•

However, NO fault will be displayed (Gas ignition control block or

CLIMATIC).

•

After reconnecting of the tube, the Burner will restart after a period of 30 to 45 seconds pre-ventilation.

GAS PRESSURE SWITCH TEST

•

With the gas burner running, close the shut off valve located before the rooftop.

•

The burner stops completely.

• However, No fault light will be displayed on the Gas ignition control block. After 6 Minutes, the CLIMATIC will display a fault.

•

Reset the CLIMATIC

IONISATION PROBE TEST

•

With the gas burner running, disconnect the terminal plug coming from the ionization probe to the gas ignition control box.

•

The flame disappears

•

The fan is still running and attempting to restart the burner (restart cycle

30 to 45 seconds).

•

If the ignition probe is not reconnected at the end of the ignition sequence the burner will stop completely.

•

The fault light on the gas ignition control block is ON.

•

Manually reset the gas ignition control block to eliminate the fault

IN CASE OF PROBLEMS REFER TO THE START UP SEQUENCE FLOWCHART NEXT PAGE

BALTIC-IOM-2022.03-EN 64

HEATING OPTION

GAS BURNER FIRE-UP SEQUENCE

Operation from control

Thermostat GAS =Closed

Supply Thermostat Limit?

(Auto Reset)

YES

Gas Low Pressure switch?

YES

Gas Ignition Control Block Signal

Extraction Fan ON

AIR Pressure Switch ON

Backfire Thermostat ON?

YES

Pre-Ventilation 30 seconds

Fire up Electrode 4s

Gas Valve Open

Ionisation1 second after the end sparking?

YES

Gas Valve remains Open

Normal Operation

Air Press Switch ON or Backfire thermostat?

YES

BALTIC-IOM-2022.03-EN

Signal from Ionisation probe still ON?

YES

Gas Control

Valve Closes

BURNER

Fault on Gas

Block

Gas Control alve Closes

BURNER

6 Minutes Delay

Fault on Climatic

HEATING OPTION

ATMOSPHERIC GAS BURNER TROUBLESHOUTING

If faults reported on CLIMATIC

• Reset the CLIMATIC.

• Check voltage: 230V after circuit breaker.

• Check GAS isolation shut-off valves are open.

• Check GAS pressure at the inlet of the GAS valves. It must be >20 mbar when the Burners shut down.

• Adjust the set points to priorities the burner. Increase the value of the room temperature set point to a temperature higher than actual room temperature.

STAGE

NORMAL

OPERATION

DIAGNOSTIC TABLE FLEXAIR GAS BURNER

POSSIBLE FAULT ACTION POSSIBLE SOLUTION

Fault on the blower thermostat

+ Check connections on the blower thermostat.

+ Replace thermostat

Heating Requested Extraction fans start Lack of gas supply

+ Check valve ’ s opening & supply pressure

Fault on the superheat thermostat on the gas burner support bar

+ Check superheat thermostat ’ s operation after manual reset

+ Restore gas supply

+ Replace superheat thermostat

After 10 seconds safety shutdown by the ignition control block

+ Check connections of the control block on the gas valve

+ Repositioning of the control block on the valve

+ Replace valve

Starting of the extraction fans

Extraction Fans are running

Nothing happens

+ Check the free movement of the fan wheel

+ Check Electrical connection on the Gas

Ignition Control Block and on EF connection

Board

+ Check the Fan supply voltage

+ Replace fan

+ Replace EF connection board If necessary

Extraction Fan is ON

After 30 to 45 seconds: preventilation the fireup electrode should spark.

Continuous

Ventilation without sparks from fire-up electrode

+ Check the fire-up electrode

+ Check the pressure drop at the pressure switch: It must be higher than

165 Pa

+Check the good operation of the pressure switch using an Ohmmeter and by artificially creating a depression in the tube.

+ Re-position the pressure switch tube.

+ Change the pressure switch.

Continuous ventilation and sparks from fire up electrode.

After a few seconds the gas burner fires- up

After 4 seconds the

GAS Burner still not operating and safety shutdown by the

Ignition Control

Block.

Within 4 seconds the gas Burner fires-up

BUT safety shutdown from the Ignition

Control Block.

+ Check injection pressure during start-up (Value for High Heat)

+Remove the control box from the gas block.

+ Check the Position and connection of the

Ionization Probe. It must not be Earthed

(230V).

+ Measure the Ionization Current: It must be higher than 1.5 microAmps.

+ Check the Type of GAS.

+ Remove the air from the Gas pipe- work

+ Adjust the injection pressure to high heat value

+ Change the Control Box if the

Gas valve is OK.

+Check the whole electrical supply.

+ Adjust the supply and injection pressure if gas is different from natural gas G20 :( G25 Gas of

Groningue for example).

BALTIC-IOM-2022.03-EN 66

HEATING OPTION

DISASSEMBLING ATMOSPHERIC GAS BURNER FOR MAINTENANCE PURPOSES

Preliminary Safety Recommendations

•

Isolate the unit using the main isolator switch.

•

Close off the isolating gas valve located before the unit.

•

Disconnect the Pipe-work. Do not discard the seals.

Disassembling the gas «burner support bar»

•

Disconnect the Electrical Connector on the electric connection board EF47

•

Remove the two screws which hold the gas Bar in Place

•

Carefully remove the gas « burner support bar » avoiding any damages to the electrodes.

Disassembling the flue

•

Electrically disconnect the fan and remove the screws holding it in place.

•

Take care not to lose any cage nuts in the smoke box.

ATTENTION: Check the correct position of the pressure tube used by the extraction pressure switch.

Required Equipment List for maintenance Adjustment and Start-up

• An accurate manometer from 0 to 3500 Pa (0 to 350 mbar):0.1% full scale.

•

A Multimeter with Ohmmeter and Micro-amps scale

•

An Adjustable Spanner

•

Tube Spanner Set: 5, 7, 8, 9, 10, and 13.

•

Flat spanner: 5, 7, 8 & 9

•

Flat Screwdrivers diameter 3 and 4, Fillips n°1

•

Vacuum cleaner

•

Paint brush

GAS BURNER SUPPORT BAR

BALTIC-IOM-2022.03-EN 67

HEATING OPTION

ATMOSPHERIC NON MODULATING GAS MODULE DIAGRAM

Circuit breaker

Transformer 400/230V

Minimum gas pressure switch and inlet pressure plug

Gas valve and solenoid

Gas ignition control block and BG50 connection board

Ignition electrode

Ionization probe

8 Gas inshot burner

9 Gas injectors support bar

10 Backfire thermostat

11 Air pressure switch

12 Outlet pressure plug

13 Smoke exhaust chimney

14 Supply safety thermostat

BALTIC-IOM-2022.03-EN 68

HEATING OPTION

ATMOSPHERIC MODULATING GAS DIAGRAM (under patent inpi mai 2004)

THE ACTUATOR

The actuator receives an information 0-10v from the regulation for the positioning of the air shutter; then the actuator transmits its position to the printed-board which will order the valve.

Check position and operation of the actuator

Bearing surface of the actuator’s screw

Minimum opening of the actuator

BALTIC-IOM-2022.03-EN 69

HEATING OPTION

STARTING UP THE ATMOSPHERIC MODULATING GAS BURNER

Disengaging for hand drive operation

Purge the pipe-work near the connection on the ignition control valve for a few seconds.

• check that the unit's treatment fan blower is running.

• set the control to “on” this will priorities the gas burner.

• increase the set temperature (room set point temperature) to a temperature higher than the actual room temperature.

Manual rotation of the actuator

The start of the gas burner must be done at high heat injection.

MODULATING ATMOSPHERIC GAS BURNER SAFETY CHECKS

Idem non-modulating gas burner

MODULATING ATMOSPHERIC GAS BURNER TROUBLESHOUTING

Idem non-modulating gas burner.

If the valve’s flow is not correct, check the operation of the actuator and of the mechanical assembly.

Replace the actuator if necessary

DISASSEMBLING OF MODULATING ATMOSPHERIC GAS BURNER FOR MAINTENANCE PURPOSES

Idem non-modulating gas burner

BALTIC-IOM-2022.03-EN 70

HEATING OPTION

PRESSURE ADJUSTMENTS ON HONEYWELL PRESSURE REGULATING VALVE TYPE VK 4105 G

Pressure regulator adjustment with 300 mbar gas supply:

• the burner must run in high heat mode for this check.

• place the tube of the “accurate” manometer on the inlet pressure port of the gas regulating valve after having loosened the screw by one turn

Low heat adjustment

Inlet Pressure

High heat adjustment underneath

Check and adjust if necessary the valve inlet pressure after gas burner ignition

HIGH HEAT INJECTION PRESSURE CHECKS

Check and adjust if necessary the valve OULET pressure place the tube of the “accurate” manometer to the out port on the gas injector support bar after having loosened the screw by one turn.

BALTIC-IOM-2022.03-EN 71

HEATING OPTION

LOW HEAT INJECTION PRESSURE CHECKS

• switch the control to low heat

• check and adjust if necessary the outlet pressure

• after the adjustment of the low heat, re-verify the high heat, re-position the stoppers and close the pressure ports.

Pressure adjustments table for each type of gas (mbar) - NON MODULATING ATMOSPHERIC GAS BURNER

Category Supply pressure Low heat injection mini. High heat injection

G20

G25 (Groningue)

G31 (GPL)

20.0 +/- 1

25.0 +/- 1.3

37.0 +/- 1.9

3.5 +/- 0.1

5.0 +/- 0.1

14.0 +/- 0.3

8.4+/- 0.2

12.3 +/- 0.2

31.4 +/- 0.6

Pressure adjustments table for each type of gas (mbar) – MODULATING ATMOSPHERIC GAS BURNER

Category Supply pressure Low heat injection mini. High heat injection

G20

G25 (Groningue)

G31 (GPL)

20.0 +/- 1

25.0 +/- 1.3

VALVE ELECTRICAL CONTROL

Check these values with an ohmmeter.

1.5 +/- 0.1

2.25 +/- 0.1

8.4+/- 0.2

12.3 +/- 0.2

BALTIC-IOM-2022.03-EN

2,90 kΩ 1,69 kΩ

HEATING OPTION

Burner safety checks

Smoke extractor pressure switch test

• With the gas burner running, disconnect the flexible tube fitted to the pressure taping on the pressure switch.

• The flame must disappear and the extraction fan must carry on running.

• However, no fault will be displayed (gas ignition control block or

CLIMATIC).

• After reconnecting of the tube, the burner will restart after a period of

30 to 45 seconds pre-ventilation.

Test de pression des gaz

• With the gas burner running, disconnect the terminal plug coming from the ionisation probe to the gas ignition control box.

• The burner stops completely.

• However, no fault light will be displayed on the gas ignition control block. After 6 minutes, the CLIMATIC™ will display a fault.

• Reset the CLIMATIC.

Ionisation probe test

• With the gas burner running, disconnect the terminal plug coming from the ionisation probe to the gas ignition control box.

• The flame disappears

• The fan is still running and attempting to restart the burner

(restart cycle 30 to 45 seconds).

• If the ignition probe is not reconnected at the end of the ignition sequence the burner will stop completely.

• The fault light on the gas ignition control block is on.

• Manually reset the gas ignition control block to eliminate the fault

IN CASE OF PROBLEMS REFER TO THE START UP SEQUENCE FLOWCHART

BALTIC-IOM-2022.03-EN 73

HEATING OPTION

CONDENSING GAS BURNER

PRELIMINARY CHECKS BEFORE START-UP

NOTE :

ANY WORK ON THE GAS SYSTEM MUST BE CARRIED OUT BY QUALIFIED PERSONNEL.

THIS UNIT MUST BE INSTALLED IN ACCORDANCE WITH LOCAL SAFETY CODES AND REGULATIONS AND CAN ONLY BE USED

IN PLANED INSTALLATION CONDITIONS FOR OUTDOOR.

PLEASE READ CAREFULLY THE MANUFACTURER’S INSTRUCTIONS BEFORE STARTING A UNIT.

BEFORE COMMISSIONING A UNIT WITH GAS BURNER, IT IS MANDATORY TO ENSURE THAT THE GAS DISTRIBUTION

SYSTEM (TYPE OF GAS, AVAILABLE PRESSU RE…) IS COMPATIBLE WITH THE ADJUSTMENT AND SETTINGS OF THE UNIT.

THE GAS MODULE SAFETY CHAIN MUST BE CHECKED BY A PROFESSIONAL BEFORE START-UP OF THE PRODUCT.

CHECK ACCESS AND CLEARANCE AROUND THE UNIT

• Make sure one can move freely around the unit.

• A minimum one-meter clearance must be left in front of the burnt gas exhaust flue.

• Combustion air inlet and burnt gas exhaust(s) must not be obstructed in any way.

• Depending on the operating conditions (prevailing winds), it may be necessary to separate the air inlets from the flue gas outlets (excluding LENNOX supply).

SUPPLY NETWORK PIPE SIZING

MALE THREADED CONNECTION FOR GAS BURNER: 3/4” ,1” OR 1”1/4

Check that the gas supply line can provide the burners with the pressure and the gas flow rate necessary to provide the heating nominal output. Select the regulator according to the gas used, the minimum and maximum gas flow of the gas burner and the operating pressure.

WARNING: DO NOT FORGET TO CONNECT THE CONDENSATE DRAIN. THE CONDENSATES MUST ABSOLUTELY BE DRAINED

AT LEAST 5 METERS FROM THE UNIT INTO AN APPROPRIATE PLACE. THE CONDENSATES ARE CORROSIVE AND COULD

DAMAGE THE UNIT (OR OTHER PARTS OF THE INSTALLATION) IF THEY ARE NOT DRAINED PROPERLY.

CHIMNEY INSTALLATION

Depending site configuration / local regulation, an additional chimney could be install (not included with the unit). Please refer to our Service & parts team.

CHIMNEY HORIZONTAL

CONNEXION

WARNING:

IT IS MANDATORY TO SEAL PROPERLY ALL EXTERNAL CONNECTIONS TO THE UNIT TO AVOID WATER INGRESS

BALTIC-IOM-2022.03-EN 74

HEATING OPTION

SAFETY INSTRUCTIONS

The gas burner can emit toxic gases (Nox, CO2, ...) especially during commissioning and when starting and stopping the burner. When the unit is in operation, the technician must work away from the gas outlet chimney. A temporary work chimney to move the fumes away from the working area (see photo) must be installed during prolonged exposures near the burner.

GAS:

Before starting up the heater, make sure that:

•

The gas mains supply data is compatible with the data stated on the nameplate;

•

The combustion air intake ducts (when fitted) and the fume exhaust pipes are those specified by the manufacturer;

•

The combustion air is supplied in such a way to avoid even partial obstructions of the intake grille (caused by leaves etc.);

•

The fuel intake internal and external seal is checked during the testing stage, as required by applicable standards;

• The heater is supplied with the same type of gas than that selected at purchase;

•

The system is correctly sized for such flow rate and is fitted with all safety and monitoring devices required by applicable standards;

•

The inside of the gas pipes and air distribution ducts for ducted heaters has been thoroughly cleaned;

• The fuel flow rate is suitable for the power required by the heater;

•

The fuel supply pressure is between the range specified on the nameplate.

GAS LEAKS

If you smell gas:

•

Do not operate electrical switches, telephones or any other object or device that could produce sparks;

• Immediately open doors and windows to create an air flow to vent the gas out of the room;

•

Close the gas valves;

• Call for qualified staff.

BALTIC-IOM-2022.03-EN 75

HEATING OPTION

PRODUCT RANGE

DESCRIPTION

SIZE

MAXIMAL HEAT INPUT

MINIMAL HEAT INPUT

EFFICIENCY AT MAXIMAL HEAT INPUT

EFFICIENCY AT MINIMAL HEAT INPUT

Max / min gas consumption at

15°C and 1013 mbar

Supply pressure

+/- 5%

Gas inlet connection

Chimney outlet diameter

Max length of gas exhaust pipe

G20

G25

G30

G31

G25

G30

G20

G31

Nominal electrical power

Operation temperature

(incoming air)

Gas volume between regulator and gas burner

(*) For gases : G25 / G27 / G2.350

kW kW

C D

25, 30, 40,

45*

45, 55, 57,

65*

10 14

E

E+

75, 85 95, 115, 125

90 110

%

96 96 96 96

%

109

m

/h m

/h kg/h kg/h mbar mbar mbar mbar inch mm m

1.1

5.3

1.2

6.2

0.8

3.9

0.8

3.9

3/4"

100

W

°C m

109

1.9

9.5

2.2

11.1

1.4

7.1

1.4

7.0

3/4"

100

1.5

7.4

1.7

8.6

1.1

5.5

1.1

5.4

3/4"

100

109 109

65 135 173 170

-20 ➔ +40 -20 ➔ +40 -20 ➔ +40 -20 ➔ +40

0.02 0.031 0.039 0.048

2.3

11.6

2.7

13.5

1.7

8.7

1.7

8.6

3/4"

100

BALTIC-IOM-2022.03-EN 76

HEATING OPTION

GAS BURNER DETAILS

• Premix burner (venturi, gas fan, pilot group, head) gas valve

• Electronic controls with display

• Combustion chamber in stainless steel AISI 441

• Exchanger bundle in stainless steel AISI 441

• Safety probe

• The PREMIX Technology: NO AIR=NO GAS

VENTURI FAN

GAS VALVE The PREMIX Technology

NO AIR = NO GAS

WORKING CYCLE

• Heat is required

• Burner fan starts to pre-wash combustion chamber and gas valves open to gas feed pilot burner

• Start up electrode gives ignition sparks on pilot burner

• Main gas valve opens to gas feed main burner

• Combustion starts thanks to pilot flame ignition

• The electronic boards close and stops the pilot

BALTIC-IOM-2022.03-EN 77

HEATING OPTION

ELECTRICAL CONNECTION

WARNING

It is mandatory to have earth connection.

BALTIC-IOM-2022.03-EN 78

HEATING OPTION

GAS CONNECTION

The module cannot support supply pressures higher than 50 mbar (0.05 bar) otherwise it can break of the gas valve membranes.

For natural gas: always install a stabilizer on the main line.

For gas GPL (Butane-Propane) gas: a pressure reducer must be installed

It is strictly forbidden to supply gas to the circuit at a pressure higher than 40 mbar.

To avoid a pressure higher than 40 mbar, a minimum volume must be present between the regulator (pressure reducer) and the inlet of the gas burner, you can find these minimum values in the table "PRODUCT RANGE". For this purpose, either a buffer cylinder must be installed (not included in our kit).

Either a straight length of at least 10 m, and no pressure stabilizer should be placed between the pressure reducer and the burner. The gas filter must be present and functional . In order to respect the minimum and maximum flow rates of the regulators, it is recommended to install only one regulator per unit.

A pressure gauge must always be installed upstream and downstream of the main gas supply line visible with a scale of [0 – 60] mbar (0.06 bar) in order to verify any difference in upstream and downstream pressure and therefore the flow rate of the entire network.

It is also possible, by closing the general valve and turning off the module, to check the tightness of the system and gas valves, checking, after a short period, for any pressure drop on the pressure gauges.

Always connect the module with a ball valve and anti-vibration flexible gas joint.

Gas supply pressure adjustment: all modules are tested and calibrated in the factory for the pressures for which they are designed.

Do not block the electrical cabinet with the gas connection (use a flexible pipe or rigid with elbows)

Must be provided by the installer Included in the module

POS. DESCRIPTION

1 Manual gas shut-off ball valve

2 -8-11 Gas pressure intake

3 Gas filter

Gas pressure regulator located on the appliance solenoid valve

Safety solenoid valve

Burner

4 -6 Pressure gauge

Gas pressure regulator with minimum and maximum pressure blocking device (outlet pressure = 0.04 bar)

- For inlet pressures < 0.04 bar provide a stabilizer

Antivibration seal

13 Ball valve with bleed

14 Maximum gas pressure switch with manual reset

- optional

15 Minimum gas pressure switch - optional

BALTIC-IOM-2022.03-EN 79

HEATING OPTION

CONDENSATE DRAIN

WARNING: Do not forget to connect the condensate drain (No need to add a siphon). The condensates must absolutely be drained at least 5 meters from the unit into an appropriate place. The condensates are corrosive and could damage the unit

(or other parts of the installation) if they are not drained properly.

Condensate drain connection

BALTIC-IOM-2022.03-EN 80

HEATING OPTION

COMMISSIONING

The gas module unit is supplied with settings entered and tested for the gas specified on the nameplate. Before turning on the gas module in the unit, check the following:

• Vent the gas supply line and carefully let the remaining air out of the pipes.

• Restore the gas supply piping after venting and check that there are no leaks, use a soapy solution or equivalent product, do not use open flames.

• Check that electrical connections indicated in electrical diagrams attached to the unit

• Check that efficient earthing connections have been completed, carried out as specified by current safety regulations;

• Provide power to the heater with the general switch on the unit.

• After the pre-wash time, the ignition spark occurs. After the third failed ignition attempt, the device locks up. After 10 seconds, it is possible to unlock the device by resetting the burner control equipment.

• After opening the gas solenoid valve, the burner ignites.

• After the stabilization of the working conditions (about 15 min.), Carry out a combustion analysis and a performance measurement.

• Recheck the combustion verification check sequence after 30 minutes of operation.

• Adjust Y2

Combustion control and regulation:

•

Put the burner in test mode o Start the gas burner with the H1-FULL test mode

(with the DS) o Hold the SET button until “PA” is displayed o Enter the authorization code. o Hold the SET button until “yt” is displayed o Press the button, change the value « e.g. „15” » , for 15 minutes the burner will work in test mode.

After this time, the control returns to automatic mode. Use this time to perform the combustion check.

•

Verification of combustion: Procedure for changing the power of the gas burner (low / high power) o Hold the SET button until “yC” is displayed o Press the button to change the value

▪ Put « „61”» - for high power

▪ Put « „51”» - for low power o For the above conditions, check the exhaust gases o Check the regulation (behavior) of the burner .

BALTIC-IOM-2022.03-EN 81

HEATING OPTION

Adjustment of Lo/Hi power with the combustion analyzer.

First in max capacity:

•

Setup λ (screwing Lo/ Hi as explained below in the picture) around 1.35 (it is a target) to get : o 7.8% ≤ CO

≤ 8.9% (for G20 only) o CO ≈ 0 ppm o But if you have combustion problems (noise (whistle), turbulences, High CO), you can adjust the λ (air f actor) from

1.2 to 1.65 to solve these problems. o 

> 90% o NOX < 30ppm

Then in min capacity:

•

Setup λ (screwing Lo/ Hi as explained below in the picture) around 1.40 (it is a target) to get: o 7.8% ≤ CO

≤ 8.9% (for G20 only) o CO ≈ 0 ppm o But if you have combustion problems (noise (whistle), turbulences, High CO), you can adjust the λ from 1.2 to

1.65 to solve these problems. o  > 102% o NOX < 30ppm

Y2 adjustment

Parameter Y2 adjusts the power of the gas burner at start-up. This adjustment is made after the Lo/Hi power and gas supply pressure adjustments have been set. The Y2 parameter should be between 18 and 25%, by default 20%.

If there is a small explosion at start-up: decrease Y2

If the flame is slow to ignite due to turbulence: increase Y2

Y2 change procedure: o Hold the SET button until "PA" is displayed. o Enter the authorization code. o Hold the SET button until "Y2" is displayed. o Press the button and set the desired value.

BALTIC-IOM-2022.03-EN 82

HEATING OPTION

MAINTENANCE OPERATIONS

To keep the machine in efficient condition and guarantee a long lifetime of the heater, it is advisable to run some inspections every year:

NOTE: Operations at points 1 to 7 must be performed after disconnecting the heater from the electrical mains and closed the gas intake. Operations at point 8 to 11 must be done with the heater on.

1) Inspection of electrodes

Dismantle the complete pilot flame and use a jet of compressed air to clean the mesh and nozzle. Check the integrity of the ceramic and use sandpaper to remove any oxidation on the metal parts of the electrodes. Check the correct position of the electrodes (see drawing below). It is important that the detection electrode is at a tangent to the head of the pilot and not inside it. The start-up electrode must discharge onto the mesh of the pilot burner.

2) Inspection of fume exhaust and air intake ducts

Visually inspect where possible or examine with specific tools to learn the status of the ducts.

Remove dust that forms on the air intake terminal.

3) Inspection and cleaning of the venturi

Remove any dirt at the mouth of the venturi with a brush, and be careful to not let it fall inside the piece.

4) Inspection and cleaning of the exchanger and burner

Perfect combustion in heaters prevents dirt. It is advisable, therefore, to not clean the exchanger and burner unless there are exceptional circumstances.

An accumulation of dirt inside the exchanger could be revealed by a sizeable variation in the module gas capacity.

Should it become necessary to clean the burner and/or exchanger, all of the gaskets mounted between the burner and the exchanger must be replaced.

5) Inspection and cleaning of the water trap

Clean the trap every year, and check the connections. Make sure there are no traces of metallic residue. If metallic residue has formed, increase the number of inspections.

6) Inspection of the gas filter

Remove the dirt on the gas filter. If it is too dirty, replace it.

7) Inspection of the ionization current

With the gas burner at rest, use a multimeter, check that the current displays 20 to 30 mA at the probe terminals.

8) Inspection of intake gas pressure

Verify that the intake pressure at the valve corresponds to the value required for the type of gas that you are using. This verification must be done with the heater on at the maximum heat capacity.

If the gas pressure is too high at the gas inlet valve, there is a risk of ejection of the chimney. In this case, check that the gas inlet pressure regulator (if present) is working correctly

9) Check the burner settings

Adjust with a combustion analyzer the values described in the paragraph: " Adjustment of Lo/Hi power with the combustion analyzer."

10) Inspection of flame monitoring equipment

With the heater operating, close the gas tap and verify that the heater blocks, signaled on the LCD display. Reopen the gas tap, reset the block and wait for the heater to start back up.

11) Safety thermostat inspection

Disconnect the safety thermostat and check that the alarm is working properly. Inspect the thermostat head.

BALTIC-IOM-2022.03-EN 83

HEATING OPTION

RECOVERY WATER COIL

Heat recovery water coil is delivered with a 3 ways valve inside carton to be assembled on site by installer.

The freeze protection is made via fresh damper safeties nevertheless for a full freezing protection has to be done using glycoled water

BALTIC-IOM-2022.03-EN 84

MAINTENANCE DIAGNOSTIC

REFRIGERATION

FAULT POSSIBLE CAUSE AND SYMPTOMS

Refrigerant charge too low

SOLUTION

Measure the superheat and sub-cooling

Good if 5°C<SC<10°C and 5°C<SH<10°C Bad if SC>10°C and SH too low

Check superheat adjustment and charge unit (a leak check must be carried out)

LP FAULT

In Heat Pump Mode the temperature difference between T outdoor and Tevap.

(Dew) is too high

5°C < Delta T < 10°C excellent

10°C < Delta T < 15°C acceptable

15°C < Delta T < 25°C too high

If too high check the coils are clean or check coil internal pressure drop between the liquid line and the suction line

Good if < 3bar

Too high > 3 bar (coil blocked)

Refrigeration circuit blocked in distribution

Stop the fan and create icing of the coil.

Check all circuits freeze evenly across the whole surface of the coil

If some parts of the coil do not freeze this could indicate a problem with the distribution

Liquid line drier blocked. High temperature difference

Change filter drier

Electronic expansion valve problem Check the wiring

Low pressure shutdown due to ice accumulation on the batteries

Check the defrost cycles. (cloud supervision advised)

BALTIC-IOM-2022.03-EN 85

MAINTENANCE DIAGNOSTIC

REFRIGERATION

FAULT

HP FAULT

POSSIBLE CAUSE AND SYMPTOMS

Incorrect airflow rates

Moisture or contaminants in the system

Condenser coil is obstructed

SOLUTION

Heat pump mode:

Check the filter before the indoor coil measure and estimate the airflow rate increase the speed of the fan

Cooling mode:

Check the condenser fan

Summer operation

Several hours after the unit has stopped, check for the presence of non-condensable substances

If the circuit pressure is higher (<1bar) than the saturated pressure corresponding to the measured outdoor temperature, there is possibility that some contaminants are present in the system.

Reclaim the refrigerant, and vacuum the circuit (For flammable refrigerant, please follow the procedure described in the manual) Recharge the unit

Check the condenser coil and clean is necessary

Recycled Hot Air Check clearance around the condenser

Incorrect adjustment of the expansion valve Refer to the LP FAULT section

Strong variations of pressure (2 to 3 bars). Expansion valve

“hunting”

Low refrigerant charge Repair the leak and fill with liquid

Very high discharge temperature, High amps measured at compressor

The pressure regulator is not sufficiently supplied with liquid

Refer to the LP FAULT section

Increase subcooling

Very high superheat, very hot compressor

Reduce the superheat on the expansion valve. Check the pressure drop on the filter drier in the suction line

Four Way reversing valve possibly blocked, abnormal noise from the valve, low LP and increasing HP

Check the operation of the valve by going through cycle inversions. Change if necessary.

Refer to LP FAULT

BALTIC-IOM-2022.03-EN 86

MAINTENANCE DIAGNOSTIC

INDOOR FAN BLOWER

FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION

High amps on action Fan motor

Pressure drop in the ducting installation too low.

Reduce the rotation speed of the fan

Measure and estimate the airflow and pressure and compare with the specification from customer.

High level of vibration

Loosening of the fan or degradation of the silent blocks

Check the fixing of the fan and transmission kit

Unstable running and high vibration

OUTDOOR AXIAL FAN

FAULT

Fan jumping from one operating point to the other

Change rotation speed of the fan

Circuit breaker open

POSSIBLE CAUSE AND SYMPTOMS

High Amps due to a low voltage from the main supply

SOLUTION

Check the voltage drop when all components are running.

Change the circuit breaker

High amps due to freezing of the coil Adjust the defrost cycle set points

Water ingress in the motor connection box Change the component

ELECTRICAL HEATER

FAULT

High Temperature trip out on the safety thermostat of the electric battery module

POSSIBLE CAUSE AND SYMPTOMS

Low airflow rate

Safety thermostat malfunction

SOLUTION

Measure and estimate the airflow and pressure and compare with the specification from customer.

Check the operating status of the safety thermostat of the electric battery module

BALTIC-IOM-2022.03-EN 87

MAINTENANCE DIAGNOSTIC

WATER INFILTRATION

FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION

Cooling mode:

Water carried away from the coil because of excessive airflow and speed on the coil.

Check the air flow rate and reduce it if necessary

Water found in the ventilation section

Water ingress in the filter compartment

CLIMATIC DISPLAYS

FAULT

Low air pressure in the compartment due to a high airflow rate or a high pressure drop before the fan

Check filter

Reduce airflow rate

Degraded ventilation section seals

Check the door seal

Check for the presence of seals in the corners of the door and at the bottom of the refrigeration section bulkhead.

Water ingress through a leaking fresh air hood or when running 100% fresh air

Check the seals and flanges in the fresh air hood

Reduce the airflow rate if necessary

POSSIBLE CAUSE AND SYMPTOMS SOLUTION

Nothing is written on the screen but it’s enlightened

Possible problem of display addressing’

See Climatic control manual for more information

Nothing occurs on the unit or an option disappeared

Possible problem of units' configuration

See Climatic control manual for more information

The message “no link” appears Problem of addresses’ recognition

Check the connections and wiring (pay attention to the polarity of the display power supply).

Check the displays

GENERAL

FAULT POSSIBLE CAUSE AND SYMPTOMS

The unit is stopped and does not want to restart

Refrigerant leak detected

Faulty sensor or sensing element

SOLUTION

Perform leak detection, repair the leak, recharge the unit, reset the detector

Check the LED status of the sensors.

Refer to paragraph R32 sensor for the meaning of the LEDs.

BALTIC-IOM-2022.03-EN 88

MAINTENANCE PLAN

Rooftops are generally placed on the roof but can also be installed in technical rooms. These units are very robust but minimum regular maintenance is required. Some moving parts in the units can suffer from wear and tear and must be checked regularly

(belts). Other parts can get clogged by dirt carried in the air (filters) and must be cleaned or replaced.

These units are designed to produce cooled or heated air through the use of a refrigeration vapor compression system, it is therefore imperative to monitor the refrigeration circuit operating pressures and check the pipe-work for leaks.

The table below, details a possible maintenance plan, including the operations to be carried out and the periodicity at which they must be accomplished. It is recommended to follow such a plan to keep a rooftop unit in good working order. Regular maintenance of your rooftop will extend its operating life and reduce operating faults

Symbols and Legend:

•

Operation which can be carried out by on-site maintenance technicians.

Operation which must be carried out by qualified refrigeration personnel, trained to operate on this type of equipment

NOTE:

• Times are given for information purpose only and may vary depending on the unit size and type of installation.

• Coil cleaning must be carried out by qualified personnel using appropriate methods that won’t damage the fins or the tubes.

• It is recommended to keep a minimum stock of common replacement parts in order to be able to carry out regular maintenance operations (i.e. filters). You can contact your local Lennox representative which can assist you in establishing a parts list for each type of equipment.

• The access ports to the refrigeration circuits MUST be leak checked every time gauges are connected to the service ports

BALTIC-IOM-2022.03-EN 89

MAINTENANCE PLAN

Task Operating mode

Clean or replace filters:

Disposable, or metal frame.

Visual check of the oil level

(applicable for units equipped with sight glass) and check the oil for acidity on the refrigerant circuits

Visually check the oil level through the sight glass on the side of

Test the oil every 3 years and after each intervention on the refrigerant circuit

Clean condensate drains, indoor coils and outdoor coils

(following local regulations)

Check condenser fans

Check for the Amps consumed

Check Smoke detector

Check CLIMATIC™ control, set-points and variables

Check refrigeration system for proper functioning

Replace filters with new ones if disposable. Vacuum clean or blow the dirt. Wash and dry carefully. Replace filter if necessary by an original Lennox filter.

Blocked filter will reduce the performance of the unit.

THE UNIT SHOULD NEVER BE OPERATED WITHOUT FILTERS

It's mandatory to clean the external coils, according to the environment where the unit is located, the frequency of the cleaning varies from once in a month to minimum twice in a year .

The performance and the sustainability of the machine is based on the perfect heat exchange.

The use of a neutral pH cleaning product is mandatory.

(WARNING: Fins and copper tubes are very fragile! Any damage

WILL reduce the performances of the unit).

Check the rotation of the fan ( free rotation, detection of vibrations or bearing noises)

Check for the Amps consumed on all three phases; compare it with the nominal value given in the electrical wiring diagram.

Check the status of the fan blades and its protections.

Check for the Amps consumed on all three phases; compare with the nominal value given in the electrical wiring diagram.

Start the unit. Trigger the smoke detector with an aerosol tester. Reset unit and control.

Refer to the commissioning sheet; Check all set points are set according to this document.

Retrieve/Check the values of Overheating and subcooling

Check clock settings Check the time and date of the control

Monthly

Quarterly

+ Half

Yearly

•

Check the position and tightness of refrigeration components

Check three-way valve on

HWC (If applicable)

Check systematically all connections and fixings on the refrigeration circuit. Check for oil traces, eventually a leak test should be conducted. Check operating pressures correspond to the ones, indicated on the commissioning sheet

Increase room set-point 10°C above the actual room temperature. Check operation of the piston. It must move away from the valve head. Reset the control.

Check the position of the crankcase heaters (around the compressor) and the proper functioning of it

Check the well fixation of the crankcase heaters, if it is tight enough

And check the crankcase heaters overall working.

Check defrost cycle with 4way valve inversion.

Switch the unit to heat pump mode. Change the set point to obtain the standard defrost mode and reduce the cycle time to the min value. Check the operation of the defrost cycle.

•

BALTIC-IOM-2022.03-EN 90

MAINTENANCE PLAN

Task Operating mode

Check overall working of the flow controller (only for rooftops with water condensation function)

Cut-off the compressors, stop the water circulation, then start the unit, wait for the water flow failing signal in the controller.

Check the water flow ( only for rooftops with water condensation function )

Measure the water flow and compare it to the initial value set in the command selection

Check the blower plug fans ( freewheel)

Check the rotation of the fan (free rotation, detection of vibration or bearing noises)

Check for the Amps consumed on all three phases; compare with the nominal value given in the electrical wiring diagram.

Check the axial extractor fan ( if the unit is equipped with )

Check the rotation of the fan (free rotation, detection of vibration or bearing noises)

Check for the Amps consumed on all three phases; compare with the nominal value given in the electrical wiring diagram.

Check the well working of the energy recovering wheels

Check the rotation of the wheel; Check the strap tension;

Replace the components in case of malfunctioning

Check Airflow rate safety switch (if equipped).

Check freeze protection on

HWC (if applicable)

Check economizer actuator operation

Check tightness of all electrical connections

Shut down supply fan. The fault must be detected within 5 seconds.

Test antifreeze function (leakage rate, frost protection thermostat)

Check all fixings and transmission. Stop the unit using the control. The fresh air damper must close. Start the unit, the fresh air damper should open.

Make a forced opening and closure of the motorized dampers.

Power down the unit and check and tighten all screws, terminal and electric connections (including the terminal boxes)

When turning on the unit, check the deterioration of the electrical components with a thermal camera, with the unit working at 100% of its power.

Check HP safety switches

Install a pressure gauge HP and check if the safety switches overall working.

Check the value of the analog

Install the pressure gauge calibrated to check the analog sensors.

Install a thermometer calibrated to control the sensors. sensors

Check with a calibrated anemometer the flow rate displayed by

CLIMATIC

Check the position of all sensors

Check the position and fastening of all sensors and their accessories (pressure tapping tube).

Check and clean if necessary all fresh air grids

Check electric heater element for excessive corrosion

Check anti-vibration mountings, for wear and tear.

Check the fresh air grilles (if fitted). If dirty or damaged, remove them from unit and clean with high pressure water cleaner.

Refit on unit once clean and dry.

Turn off the unit; Pull the electric heater out of the heater module box and check the resistances of traces of corrosion;

Replace resistance as required;

Visually check anti-vibration mountings on compressors and centrifugal fan. Replace if damaged.

Monthly

Quarterly

+ Half

Yearly

•

BALTIC-IOM-2022.03-EN 91

MAINTENANCE PLAN

Task Operating mode

Check Glycol concentration in the HWC circuit and/or in the water condenser circuits

Gas burner module check for corrosion

Sweeping and cleaning the gas burner

Check the glycol concentration in the pressurized water circuit.

( a concentration of 30% gives a protection down to approx.. -

15°C) check the circuit pressure

Pull out the burner to access the tubes

(refer to Gas burner section in the IOM)

Clean the in-shot burners and the blower wheel lightly with a brush. Sweep the flue and flue box. Wipe-off the dust from the housing of the motor. Clean combustion air inlet louvers Pullout baffles from the tubes, sweep the tubes

CHECK FLUE BOX GASKET

Gas supply pressures

/ connections checks

Check the gas regulation valve settings

Check gas burner safety switches

Check the ignition electrode and the ionization probes

Check gas fume combustion levels

Check casing and equipment corrosion

Check the water tightness of the unit and its accessories

Refer to Gas burner section in the IOM for details

Do a combustion analysis.

Refer to local regulation if it exists

To treat and neutralize eventual rust spots

Check the doors gasket

Check and clean the water filter (only for Rooftops with water condenser)

Verify the gaskets, if cracked or ripped, repair them or replace them.

Verify the gaskets; if cracked, ripped or discontinuous in these cases replace them.

ATTENTION: The water circuit can be under pressure. Follow the usual precautions when depressurizing the circuit before opening. Ignoring these rules can lead to accidents and cause injury to the personal.

Check the water tightness of the water circuit (only for

Rooftops with water condenser)

Check for water leaks and repair if it's needed.

A2L: Calibrate the sensitive elements of the sensors

Use the pocket.

Perform a sensor bump test.

• press the test button during 20 seconds

• the relays will switch and the analog output will switch to

20mA.

• as soon as you release the button, the test stops and everything returns to normal.

Perform a sensor calibration. This calibration is mandatory and the frequency varies according to local standards

Monthly

Quarterly

+ Half

Yearly

•

Replacement of the A2L probe

Check the remaining sensor life.

Sensitive element to be replaced every 5 years.

BALTIC-IOM-2022.03-EN 92

WARRANTY

TERMS AND CONDITIONS

In the absence of any other written agreement (e.g. local regulations), the guarantee shall only apply to design faults which occur within a 24 months for an R32 machine and 12 months for an R410 machine (warranty period).

The warranty period starts on the date of commissioning and at the latest six months after the delivery of the Rooftop.

DO NOT CONFUSE THE WARRANTY WITH MAINTENANCE

The warranty will only apply if a maintenance contract has been signed, starting from the date of commissioning, and if the maintenance contract has actually been performed.

The maintenance contract must be made with a specialist, competent company.

The sole effect of any repair, modification 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 fluids must be requalified (calibrated or replaced) every 12 months, according to the CTP of 23 July 2020.

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

LIFETIME OF THE EQUIPMENT

The refrigerating system is designed for a lifetime of at least 10 years if the safety and maintenance instructions are strictly respected.

The lifetime of the equipment may be renewed if the periodic requalification certificate is validated by the expert (authorized body or DREAL in France (Directions Régionales de l'Environnement, de l'Aménagement et du Logement)

DISPOSAL OF THE EQUIPMENT

Equipment shut-down and recuperation of oil and coolant must be carried out by qualified personnel conform to the recommendations of standard EN 378.

All elements in the refrigeration system such as refrigerant, oil, coolant, filters, dryers and insulating materials must be recuperated, re-used and/or disposed of in a correct manner (see EN 378 part 4). No materials may be discarded into the environment.

The Ecologic organization is in charge of collecting, depolluting and recovering WEEE throughout France, ensuring that each step is carried out in full compliance.

BALTIC-IOM-2022.03-EN 93

brand of LENNOX EMEA

Headquarters LENNOX EMEA

7 rue des Albatros - Z.I. Les Meurières, 69780 Mions - France

+33 (0) 810 502 502 www.lennoxemea.com

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