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Lennox BAC 024 SNM 3M, Installation, Operating And Maintenance Manual

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BALTIC-IOM-0412-E / Service manual

GAS BURNERS

Gas module

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 

Ionisation probe 

Gas inshot burner

Gas injectors support bar

Back

fi

 re thermostat 

Air pressure switch 

Outlet pressure plug 

Smoke exhaust chimney 

Supply safety thermostat

Summary of Contents for BAC 024 SNM 3M

Page 1: ...20 85 kW Installation operating and maintenance BALTIC IOM 0412 E BALTIC Rooftop units air cooled...

Page 2: ......

Page 3: ...ROL MANUAL CERTIFICATES 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...

Page 4: ......

Page 5: ...h a crane Lifting the roof curbs DELIVERY CHECKS Rating plate Storage Maintenance key Condensate drains Preliminary checks Installation requirements Connections INSTALLATION ON A ROOF MOUNTING FRAME R...

Page 6: ...52 DHM 3M 49 5 60 BAG 057 DHM 3M 54 7 60 BAG 065 DHM 3M 61 9 60 BAG 075 DHM 3M 73 4 120 BAG 085 DHM 3M 79 8 120 BAM 024 SSM 3M 23 3 20 8 20 BAM 030 SSM 3M 28 9 26 5 20 BAM 038 SSM 3M 36 8 35 1 20 BAM...

Page 7: ...ed in this manual including any drawing and technical descriptions provided by us remain the property of LENNOX and must not be utilised except in operation of this product reproduced issued to or mad...

Page 8: ...y coolant gas and oil Transport Handling Access Never lift the unit without forklift protections An approach ramp must be installed if the unit s installation requirements tell that it s necessary to...

Page 9: ...2 E Installation manual TRANSPORT HANDLING Mandatory handling devices MANDATORY HANDLING DEVICES Handling slings to guide the unit toward the roof curb Vacuum lifting beam to position the unit COMPLIA...

Page 10: ...7 4 37 4 37 4 45 45 45 45 62 3 62 3 49 6 49 6 49 6 49 6 67 5 67 5 67 5 67 5 92 9 92 9 36 2 36 2 36 2 36 2 54 9 54 9 54 9 54 9 86 4 86 4 20 9 20 9 20 9 20 9 28 4 28 4 28 4 28 4 35 9 35 9 65 65 65 65 70...

Page 11: ...ccording to the figure below Do not remove the unit plastic cover while lifting IMPORTANT note for unit clearances Ensure the fresh air inlet does not face prevailing wind direction If machine is incl...

Page 12: ...nder the machine 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...

Page 13: ...fting lug dimensions Use lifting shackles located on each angle of the unit Maximum diameter of the ring shaft 20 mm Lifting belts length The unit must be lifted using spacing beams to avoid the belts...

Page 14: ...Lifting the roof curbs 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 indepe...

Page 15: ...NG THE UNITS Exhaust roofcurb Non adjustable roofcurb Adjustable roofcurb Multidirectionnal roofcurb WARNING all multidirectionnal flowcurb and horizontal extraction flow curb must be secured to the g...

Page 16: ...n position 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...

Page 17: ...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 refri...

Page 18: ...ing 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 When the frame is correctly positioned it is es...

Page 19: ...anual IMPORTANT note Prior to put the machine make sure to put a polyethylene foam on the curb upper flange side must be delivered in the curb package INSTALLATION ON A ROOF MOUNTING FRAME Positioning...

Page 20: ...Installation manual 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...

Page 21: ...ed as all parts required are supplied with the frame 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 fra...

Page 22: ...here pipes and electrical conduits extend through the roof flashing must conform to local codes of practice Beforeinstallingtheequipment makesurethatsealsarenotdamaged and check that the unit is secur...

Page 23: ...s 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 ev...

Page 24: ...20 VRHS HRVS VRVS HRHS BALTIC IOM 0412 E Installation manual PLATE HEAT RECOVERY CONFIGURATIONS ERVF HRMV EBHO HRMH Return Return Return Fresh air Fresh air...

Page 25: ...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 Slid...

Page 26: ...top slots 5 Install the heat recovery module by taking care to position properly the lower mounting bar Don t forget to remove the lifting covers from the module 6 Slide the T plate into the lifting l...

Page 27: ...23 VRHS HRVS VRVS HRHS BALTIC IOM 0412 E Installation manual THERMODYNAMIC HEAT RECOVERY CONFIGURATIONS ERVF TRMO EBHO TRMO Return Return Return Fresh air Fresh air...

Page 28: ...and can be accessible from the supply e Drive compartment Circuit specifications 2 COMMISSIONING Electrical connections All wire connections are factory made Starting up CLIMATIC configuration Power t...

Page 29: ...orrect airflow rates Check fan exhaust or supply function of the mode Amps and also filter Refrigerant charge too high Checktherefrigerantchargeloadaccording to the refrigerant load table See also fri...

Page 30: ...nsation 329 max HP 62 C condensation 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 327 max LP 26 C 317 limit LP 27...

Page 31: ...power Wire connection tightness checks CLIMATIC configuration Powering the unit EDRIVE VENTILATION FRESH AIR HOOD FILTERS REFRIGERATION CIRCUIT HEATING OPTIONS Hot water coils Electric heater Electri...

Page 32: ...nical and technological information contained in this manual including any drawing and technical descriptions provided by us remain the property of LENNOX and must not be utilised except in operation...

Page 33: ...frigerating circuits can cause an explosion and spray coolant gas and oil Transport Handling Access Never lift the unit without forklift protections An approach ramp must be installed if the unit s in...

Page 34: ...ent checked Yes No Yes No Fan speed rpm Averaged measured amps A Shaft mechanical mower Refer to airflow balancing W Operating point checked Yes No Yes No Read airflow m3 h 6 EXTERNAL SENSOR CHECKS Ch...

Page 35: ...atures Phase 1 Phase 2 Phase 3 Temperatures Pressures Suction Disch LP HP Comp1 A A A C C Bar Bar Comp2 A A A C C Bar Bar Comp3 A A A C C Bar Bar Comp4 A A A C C Bar Bar HP cut out Bar LP cut out Bar...

Page 36: ...ess Site operator Cooling load Refrigerant type Refrigerant quantity kg Unit manufacturer Year of installation General information Date Engineer Quantity kg Reason for addition Refrigerant additions D...

Page 37: ...OGBOOK EUROPEAN REGULATION N 842 2006 Date Engineer Test Result Follow up Action Required Leak tests part 2 Date Engineer Related to test dated Action taken Follow up actions Date Engineer Test result...

Page 38: ...65 1 8 0 8 0 2 8 0 8 0 E 75 1 10 5 10 5 2 10 5 10 5 85 1 10 5 10 5 2 10 5 10 5 BALTIC IOM 0412 E Service manual REFRIGERANT TRANSACTIONS LOGBOOK EUROPEAN REGULATION N 842 2006 Refrigerant load accord...

Page 39: ...are CE marked according to Pressure Equipement Directive Periodical visit according european pressure equipment directive According to Pressure Equipments Directive periodical controls on site are ex...

Page 40: ...ion 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 nam...

Page 41: ...ce manual eDrive VENTILATION eDrive assembly instructions specification The flexible elastomeric tire is removable without removing the plates The material is natural rubber Temperature range from 42...

Page 42: ...controling the airflow within the operating range of each kit Airflow rate calculation inputs are rpm and power absorbed output read on the inverter variable bus The airflow rate calculation formula...

Page 43: ...355 L 4 0 85 K3 826 1409 6100 9300 8 4 ADH 355 L 5 5 0 87 K4 930 1499 7100 11100 12 2 ADH 355 L 7 5 0 88 K5 1070 1578 8700 13100 16 3 AT 15 11 G2L 5 5 0 87 K1 760 1310 10000 13000 12 2 AT 15 11 G2L 7...

Page 44: ...fan type motor size 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...

Page 45: ...al on the top of the hood cover Wind direction The prevailing wind has to be taken into account while choosing the machine position on the building roof It s highly recommended to avoid putting the fr...

Page 46: ...Airflow in page 3343 25Pa by default No filter in page 3344 50Pa by default Dirty Filter in page 3345 250Pa by default The actual pressure drop measured accross the coil can be read on the CLIMATIC Di...

Page 47: ...ic expansion valve 2 electronic valves types are fitted on BALTIC E2V E3V EEV adjustments EEV allows the control of superheat in biflow operation see CLIMATIC 60 sections E2V welding instructions Elec...

Page 48: ...for possible leaks 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...

Page 49: ...uce the pressure drops the airflow is ducted around the shielded resistances The resistances are made smooth stainless steel tubes with a capacity of 6W cm2 It is protected as standard against overhea...

Page 50: ...C section A metallic filter is installed between air filter electrical resistance to protect against heat radiations WARNING electric pre heater is connected heater to mainS power risk of electrical S...

Page 51: ...e 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 Starting up the...

Page 52: ...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 ionisation probe If ionisa...

Page 53: ...sened the screw by one turn Check and adjust if necessary the valve outlet pressure to 8 4 mbar G20 12 3 mbar for groningue G25 31 4 mbar for propane G31 the burner must run in high heat mode for this...

Page 54: ...f necessary the outlet pressure to 3 5 mbar G20 or 5 mbar for groningue G25 14 mbar for propane G31 Valve electrical control Pressure adjustments table for each type of gas mbar Category Supply pressu...

Page 55: ...ning close the shut off valve located before the rooftop 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...

Page 56: ...Normal operation Gas valve open Gas control valve closes BURNER STOPS Gas control valve closes BURNER STOPS Fault on gas control block 6 minutes delay Fault on CLIMATIC Supply thermostat limit Auto R...

Page 57: ...ition 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 pre ventilation the fire up...

Page 58: ...0 mbar 0 1 full scale a multimeter with ohmmeter and micro amps scale an adjustable spanner tube spanner set 8 9 10 and 13 flat screwdrivers diameter 3 and 4 fillips n 1 vacuum cleaner paint brush Dis...

Page 59: ...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 Ionisation probe Gas inshot bur...

Page 60: ...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...

Page 61: ...r after having loosened the screw by one turn Check and adjust if necessary the valve outlet pressure to 8 4 mbar G20 or 12 3 mbar for G25 the burner must run in high heat mode for this check place th...

Page 62: ...re to 1 5 mbar minimum G20 or 2 25 mbar for G25 after the adjustment of the low heat re verify the high heat re position the stoppers and close the pressure ports Valve electrical control Pressure adj...

Page 63: ...as burner 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 necess...

Page 64: ...IL Heat recovery water coil is delivered with a loose 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 fr...

Page 65: ...expansion valve Attempt to free the valve adjusting element by freezing the valve and then heating the thermostatic element Replace the valve if necessary Expansion valve not adjusted properly Adjust...

Page 66: ...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 operation of the valve by...

Page 67: ...ck seals around the ventilation section Check the door seal Check for the presence of silicone seals in the corners of the door and at the bottom of the refrigeration section bulkhead Water ingress in...

Page 68: ...12 E Service manual SPARE PART LIST Refrigeration components R410A Designation Familly Code Compressor Comp Comp Comp INDOOR coil ID Cbox size 24 30 Coil ID Cbox size 38 42 Coil ID Dbox Coil ID Ebox C...

Page 69: ...rvice manual SPARE PART LIST Casing Designation Familly Code Economiser Fresh air hood grille C box Sheet metal Fresh air hood grille D box Fresh air hood grille E box Insulation Rockwool Insulation i...

Page 70: ...h 28 20 al sage 28 4950050M Cast Bush 30 25 al sage 25 4950053R Cast Bush 30 25 al sage 28 4950054T Cast Bush 30 25 al sage 30 4950238N M6x30 5680408T M6x30 5480956H Tube ep 5 mm noir 4680360K Double...

Page 71: ...been applied by the owner for these applications which has been recommended by a competent body not linked to the owner and after carrying out a study of the site 5 Nevertheless the LENNOX coating is...

Page 72: ...nded 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 Note Times are given for informat...

Page 73: ...rs Check absorbed Amps Check absorbed Amps on all three phases compare with the nominal value given in the electrical wiring diagram Check Smoke detector Start the unit Trigger the smoke detector by m...

Page 74: ...ut down the axial fans and wait for the HP switch to shut down the compressor 29 bar 1 0 auto reset 22 bar 0 7 Reconnect fans Switch off the centrifugal supply fan and wait for the LP switch to cut ou...

Page 75: ...s a protection down to aprox 15 C check the circuit pressure Check defrost cycle with 4 way valve inversion Switch the unit to heat pump mode Change the set point to obtain the standard defrost mode a...

Page 76: ...72 BALTIC IOM 0412 E Service manual...

Page 77: ...TANT WARNING ONE DC60 FOR ONE AND ONLY ONE ROOFTOP TEMPERATURE MEASUREMENT RELATIVE HUMIDITY MEASUREMENT CONFIGURATION INITIALIZATION PRESENTATION USE q On Off unit Setting time Information available...

Page 78: ...s equipped with a temperature sensor The temperature sensor allows the acquisition of room temperature to control WARNING Separate as much as possible probes displays logical input cables from power c...

Page 79: ...shield The cable length with power should not exceed 30m The cable length without power 24V external must not exceed 150m For a better electromagnetic protection Lennox recommends the use of LiYCY Pca...

Page 80: ...o use the measure of the DC60 1 BM B12 or 2 BM B1 to use the remote probe Note for rooftop with a medium CLIMATIC 60 connect the remote sensor between points B12 and GND terminal block J18 for rooftop...

Page 81: ...lue Turn the knob to adjust the desired value Press again on the knob to confirm your choice The symbol is no longer displayed on the right side of the value The rotation of the knob is for select a n...

Page 82: ...he connection between the CLIMATIC 60 and the DC60 is correct Online to power up the screen displays only the symbol This phase allows the CLIMATIC 60 to set up the DC60 with options of rooftop After...

Page 83: ...riefly press the button To set the time press the button a few seconds The hour value flashes Turn the knob to adjust the desired value Press the knob to select your choice Then the minute value flash...

Page 84: ...By rotating the knob you can view or modify the following values This item can know the number of rooftop connected to the DC60 This item allows you to view and or modify the control temperature requi...

Page 85: ...is to 0 By this item it s possible to reset the alarm activated To do this set the value of the item to the value 0 This item indicates the measure temperature of the air outside This item indicates t...

Page 86: ...e 000 flashes Turn the knob to change the value to select the number 066 Then validate the code by pressing the knob If the code is wrong access the setup menu is not possible and the DC60 returns to...

Page 87: ...jack on the back of the DM60 screen attach the front panel on the back using provided countersunk screws snap frame The display is connected to CLIMATIC DM60 on the screw terminals of the card DT50 T...

Page 88: ...but the connectors A and SC are not Displays connected to these ports are not powered If J14 and J15 are set differently the DT50 dispatcher DOESN T WORK and therefore connected displays don t work Te...

Page 89: ...onnection with star is not recommended for optimum performance it is advisable to connect a maximum of two cables per unit The connection must be wired as follows For a length of 0 to 300 m AWG22 0 34...

Page 90: ...anged is displayed If after 5 seconds the display is not correct access a second time the setup mode by pressing the arrow enter and down arrow keys for at least 5 seconds up to the next screen press...

Page 91: ...Day I mode Day II mode If the unit is in alarm this symbol is displayed Small numerical value volatile set point temperature View and or modify the offset or set point of the desired temperature contr...

Page 92: ...pressing the alarm button directs you to the alarm list display pressing the prg button directs you to the rooftop setup menus display pressing the esc button takes you to the selected rooftop choice...

Page 93: ...de set point visualization Alarm list History used to store the last 99 alarms occurred on the unit each alarm is stored on the date and time the fault occurred an active alarm is signified by the bel...

Page 94: ...utton it puts you on the next digit password or directs you to the selected function screen Pressing the down arrow button decreases the password digit value or selects the next function Setting Tempe...

Page 95: ...ing the enter button validates the selection then directs you to the rooftop setup menus display Pressing the down arrow button reverses the state View edit alarm and safety reset Pressing the alarm b...

Page 96: ...lected value View edit hour and minutes of each zone beginning View edit the zone operating mode The schedule is different each weekday You must set a schedule for monday tuesday and sunday The visual...

Page 97: ...ficates CERTIFICATES Ref BALTIC_Certificates IOM 0412 E TABLE OF CONTENTS Certificates are given for information only To get the uptodate certificates please contact your local LENNOX reprensentative...

Page 98: ...94 BALTIC IOM 0412 E Certificates CE CONFORMITY DECLARATION...

Page 99: ...95 BALTIC IOM 0412 E Certificates CE CONFORMITY DECLARATION...

Page 100: ...erational Manual Certification Diploma N 09 04 422 Rooftops LGL France S A Z I Les Meurieres BP 71 69780 Mions Cedex France LENNOX EUROPE LENNOX OM 13 2011 OM 13 2011 LGL France S A Erick MELQUIOND Ma...

Page 101: ...97 BALTIC IOM 0412 E Certificates CERTIGAZ...

Page 102: ...he specifications ratings and dimensions are subject to change without notice and without incurring liability Improper installation adjustment alteration service or maintenance can cause property dama...

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