Lennox BAC020SNM Installation, Operating And Maintenance Download

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Providing indoor climate comfort

BALTIC R410A

BALTIC R410A-IOM-0708-E

Installation, operating
and maintenance

Summary of Contents for BAC020SNM

Page 1: ...Providing indoor climate comfort BALTIC R410A BALTIC R410A IOM 0708 E Installation operating and maintenance ...

Page 2: ...se 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 LENNOX have been providing environmental solutions since 1895 our range of Baltic TM rooftop continues to meet the standards that have made LENNOX a household name Flexible design solutions to meet...

Page 3: ...bled roof curb 20 Securing the curb 22 Curbing and flashing 22 Heat recovery installation 23 Economiser and extraction 24 COMMISSIONING Electrical connections 26 Preliminary checks 26 Starting the unit 27 Powering the unit 28 ARRANGEMENT DRAWINGS BALTIC BAC BAH BAG BAM 020 to 075 29 Non adjustable roofcurb 37 Adjustable roofcurb 38 Multidirectional horizontal roofcurb 42 Exhaust vertical roofcurb ...

Page 4: ...ils 73 Electric heater 75 Gas burners 76 Modulating gas burners 88 CLIMATIC CONTROLLER See specific content on page 93 93 PRINCIPLE SKETCHES Refrigerant circuits 114 Hot water coil diagram 117 MAINTENANCE DIAGNOSTIC 118 MAINTENANCE PLAN 121 WARRANTY 124 CERTIFICATES 125 ...

Page 5: ...arried out using connections provided for this purpose and suitable equipment To prevent the risk of explosion due to spraying of coolant and oil the relevant circuit shall be drained and at zero pressure before any disassembly or unbrazing of the refrigerating parts takes place There is a residual risk of pressure build up by degassing the oil or by heating the exchangers after the circuit has be...

Page 6: ...ent Vérifié Yes Oui No Non Yes Oui No Non Motor Pulley Dia Poulie Moteur Dia DM mm Fan Pulley Dia Poulie Ventilateur Dia DP mm Fan Speed Vitesse rotation Ventilateur Motor rpm x DM DP Averaged Measured Amps Intensité Mesurée moyenne rpm A Shaft Mechanical Power Refer to airflow balancing Puissance Mécanique à l Arbre Voir section réglage débit W Operating point checked Vérif Point de fonctionnemen...

Page 7: ...ure HP Bar LP cut out Coupure sécurité BP Bar Refrigerant charge Charge réfrigérant C1 kg C2 kg C3 kg C4 kg 8 ELECTRIC HEATER SECTION SECTION RECHAUFFEUR ELECTRIQUE Type Type Serial No No Série AMPS 1st stage Baltic Intensité 1er étage Baltic AMPS 2nd stage Baltic Intensité 2e étage Baltic 1 2 3 1 2 3 9 HOT WATER COIL SECTION SECTION BATTERIE EAU CHAUDE Check Three Way Valve Movement Vérification ...

Page 8: ...ne Consignes à renseigner pour chaque zone horaire Start z A Start z B Start z C Start UNO hour 3211 min 3212 hour 3213 min 3214 hour 3215 min 3216 hour 3217 min 3218 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Description Unit Menu Min Max Zone A Zone B Zone C UNOC Sp Room C 3311 8 35 Mini Air 3312 0 100 Sp Dyna C 3321 0 99 9 Sp Cool C 3322 8 35 Sp Heat C 3323 8 35 Swap Heater On Off...

Page 9: ...e Name Serial Number Site Address Site Operator Cooling Load Refrigerant Type Refrigerant Quantity kg Unit Manufacturer Year of Installation REFRIGERANT ADDITIONS Date Engineer Quantity kg Reason for Addition REFRIGERANT REMOVAL Date Engineer Quantity kg Reason for Removal LEAK TESTS Date Engineer Test Result Follow Up Action Required ...

Page 10: ...8 E Page 9 LEAK TESTS Part 2 Date Engineer Test Result Follow Up Action Required FOLLOW UP ACTIONS Date Engineer Related to test dated Action Taken TESTING of AUTOMATIC LEAK DETECTION SYSTEM If fitted Date Engineer Test Result Comments Remarks ...

Page 11: ...COMMISSIONING REPORT BALTIC R410A IOM 0708 E Page 10 ...

Page 12: ...ly 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 the year of manufacture as well as the type of refrigerant used and the required charge for each compressor circ...

Page 13: ...ANSPORT HANDLING WARNING BALTIC R410A IOM 0708 E Page 12 Handling slings to guide the unit towards the roofcurb Vacuum lifting beam to position the unit COMPLIANT NON COMPLIANT MANDATORY HANDLING DEVICES ...

Page 14: ...220 1220 1221 1221 1221 1225 1225 D mm 484 484 414 418 418 418 418 Weight of standard units Without hood kg 394 414 547 604 619 796 852 With hood kg 417 437 575 677 652 837 893 Poids des unités à gaz Standard heat without hood kg 445 465 608 678 693 904 960 Standard heat with hood kg 468 488 636 711 726 945 1001 High heat without hood kg 454 474 627 700 715 963 1019 High heat with hood kg 477 497 ...

Page 15: ...NDLING BALTIC R410A IOM 0708 E Page 14 LIFTING THE UNITS B box C box D box E box RETRACTABLE LIFTING LUG Fig 9 1850 mini 1410 mini 1930 mini 1700 mini 2250 mini 1700 mini 2890 mini 2080 mini Fig 5 Fig 6 Fig 7 Fig 8 ...

Page 16: ... 1995 Weights kg B box C box D box E box No aux heating 87 94 104 152 With aux heating 86 90 100 138 2 EXHAUST ROOF CURB Dimensions B box C box D box E box A 2050 1900 1900 2250 B 1160 1360 1610 2060 Weights B box C box D box E box Vertical No aux heating 192 220 240 370 Vertical With aux heating 194 194 240 365 Horizontal 142 168 185 301 A B A B A B Fig 10 Fig 11 Fig 12 ...

Page 17: ...50 1900 1900 2250 B 1160 1360 1610 2060 Weights kg B box C box D box E box No aux heating 81 88 100 147 With aux heating 90 93 103 146 7 LIFTING THE ENERGY RECOVERY MODULE Dimensions B box C box D box E box A 1290 1290 1290 1290 B 820 1170 1547 1895 Weights kg B box C box D box E box 143 172 229 317 A B A B Fig 13 Fig 14 ...

Page 18: ...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...

Page 19: ...ound the unit NOTE Ensure the fresh air inlet does not face prevailing wind direction A B C D B Box 1000 1 1500 2 1500 1000 C Box 1200 1 1500 2 1500 1000 D Box 1400 1 1500 2 1500 1000 E Box 1800 1 1500 2 1500 1100 1 Add 1 meter if the units are equipped with gas burner 2 Double this distance if the units are equipped with extraction Fig 16 ...

Page 20: ...Above all ensure that all the adjustable returns are facing outward 1 figure 17 They are usually turned inside out for transport Place the roof mounting frame on the trimmer beam by first lining up the inlet and the outlet opening 2 figure 18 After levelling the frame secure the adjustable returns on the trimmer It is important to centre the unit on the roof frame Fig 17 Fig 18 Fig 19 ...

Page 21: ...pport 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 See page 24 for frame dimensions location of supply and return air opening NOTE frame assembly must be installed flat levelled within 5mm per linear meter in any direction UNIT FLOOR...

Page 22: ...ucture 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 in figure 16 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 ...

Page 23: ... thick insulation 2 figure 24 Check that the insulation is continuous counter flash and seal around the frame as shown in 1 figure 24 CAUTION To be effective the upstream must end below the drop edge 3 figure 24 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 ...

Page 24: ...gging the returns A in the slits B of the framework of the unit see detail 2 Fix the elbow with caged nuts at envisaged places C 3 Apply mastic on the two side studs and on the superior stud of the energy recovery box 4 Pose the energy recovery box on the elbow 5 Fix the energy recovery box thanks to the two edges at 45 right and left with self drilling screws D 1 4 Fig 25 ...

Page 25: ...embly 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 equalise 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 adjusta...

Page 26: ...RY MODULE EXHAUST ROOFCURB Vertical flow MULTIDIRECTIONAL ROOFCURB ENERGY RECOVERY MODULE EXHAUST ROOFCURB Horizontal flow Fresh air 1 Supply fan 4 Multidirectional roofcurb Return air 2 Economiser damper 5 Heat recovery module Exhaust air 3 Exhaust damper 6 Exhaust Roofcurb Supply air ...

Page 27: ...d their connectors corresponding to the roof curb motor and actuator and extraction box ones are already rolled up in these elements it is enough to bring them through the openings envisaged and to connect them on the sites indicated on the figure 28 It s the same procedure when you have an energy recovery module PRELIMINARY CHECKS Ensure that all drive motors are secure Ensure that the adjustable...

Page 28: ...are factory set and the configuration switches are adjusted depending on the option the type of unit Connecting the CLIMATIC displays Fig 31 Close the 24V Control Circuit breakers Fig 32 The CLIMATIC 50 starts after 30s Reset the DAD photo If fitted Fig 33 Check and adjust the control settings Refer to the control section in this manual to adjust the different parameters Language or ENGLISH RT 050...

Page 29: ...e specified limits this usually indicates excessive air flow which will affect the life expectancy and the thermodynamic performances of the unit This will also increase the risks of water ingress into the unit Refer to the Air Flow Balancing section to correct the problem At this point attach the manometers to the refrigerant circuit Fig 34 RUN TEST Start unit in cooling mode Thermodynamic readin...

Page 30: ... heater or hot water coil BAC BAH 020 030 1D Down supply air 3 Fresh air 5D Down hot water entry 8 Extraction 1F Front supply air 4F Front main power entry 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 5F Front hot water entry 70 Outdoor coil outlet Total Length unit option ...

Page 31: ...with electric heater or hot water coil BAG BAM 020 030 1D Down supply air 3 Fresh air 8 Extraction 1F Front supply air 4F Front main power entry 6 Gas supply inlet 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 70 Outdoor coil outlet Total Length unit option ...

Page 32: ...ic heater or hot water coil BAC BAH 035 1D Down supply air 3 Fresh air 5D Down hot water entry 8 Extraction 1F Front supply air 4F Front main power entry 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 5F Front hot water entry 70 Outdoor coil outlet Total Length unit option ...

Page 33: ...H with electric heater or hot water coil BAG BAM 035 1D Down supply air 3 Fresh air 8 Extraction 1F Front supply air 4F Front main power entry 6 Gas supply inlet 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 70 Outdoor coil outlet Total Length unit option ...

Page 34: ... heater or hot water coil BAC BAH 045 055 1D Down supply air 3 Fresh air 5D Down hot water entry 8 Extraction 1F Front supply air 4F Front main power entry 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 5F Front hot water entry 70 Outdoor coil outlet Total Length unit option ...

Page 35: ...with electric heater or hot water coil BAG BAM 045 055 1D Down supply air 3 Fresh air 8 Extraction 1F Front supply air 4F Front main power entry 6 Gas supply inlet 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 70 Outdoor coil outlet Total Length unit option ...

Page 36: ... heater or hot water coil BAC BAH 065 075 1D Down supply air 3 Fresh air 5D Down hot water entry 8 Extraction 1F Front supply air 4F Front main power entry 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 5F Front hot water entry 70 Outdoor coil outlet Total Length unit option ...

Page 37: ...with electric heater or hot water coil BAG BAM 065 075 1D Down supply air 3 Fresh air 8 Extraction 1F Front supply air 4F Front main power entry 6 Gas supply inlet 9 Smoke outlet 2D Down return air 4D Down main power entry 71 Outdoor coil inlet 10 Condensate drainage 2F Front return air 70 Outdoor coil outlet Total Length unit option ...

Page 38: ...ed heating ALL UNITS 1D Down supply air 8 Main Power Entry 030 035 040 045 050 2D Return air 8 Main Power Entry 020 025 Type Size A B C D E F G H I J 020 030 1183 1893 691 400 246 246 515 50 1783 1083 035 1380 1740 790 400 351 240 675 50 1640 1280 045 055 1630 1740 1050 400 352 229 675 50 1640 1530 065 All 075 2080 2090 1400 400 425 255 720 156 1990 1980 Roof opening I x J ...

Page 39: ... R410A IOM 0708 E Page 38 020 030 A B BAC BAH _BAG BAM or BAC BAH with auxiliary heating 247 691 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry Roof opening 1795 x 1085 ...

Page 40: ...0A IOM 0708 E Page 39 035 A B C D BAC BAH _BAG BAM or BAC BAH with auxiliary heating 636 351 790 241 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry Roof opening 1642 x 1282 ...

Page 41: ...IOM 0708 E Page 40 045 055 A B C D BAC BAH _ BAG BAM or BAC BAH with auxiliary heating 352 1050 230 637 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry Roof opening 1642 x 1532 ...

Page 42: ...ADJUSTABLE ROOFCURB BALTIC R410A IOM 0708 E Page 41 BAC BAH BAG BAM 065 075 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry ...

Page 43: ...2 BAC BAH BAG BAM 020 030 1F 2F 1F Front supply air 2F Front return air This roofcurb is also necessary for all cooling only or heatpump rooftop with auxiliary electric heater or hot water coil WARNING ONLY ONE OF THE 4 FOLLOWINGS POSSIBILITIES 2F 1F 2F 1F 2F 1F 2F 1F ...

Page 44: ... 43 BAC BAH BAG BAM 035 1F 2F 1F Front supply air 2F Front return air This roofcurb is also necessary for all cooling only or heatpump rooftop with auxiliary electric heater or hot water coil WARNING ONLY ONE OF THE 4 FOLLOWINGS POSSIBILITIES 2F 1F 2F 1F 2F 1F 2F 1F ...

Page 45: ...4 BAC BAH BAG BAM 045 055 1F 2F 1F Front supply air 2F Front return air This roofcurb is also necessary for all cooling only or heatpump rooftop with auxiliary electric heater or hot water coil WARNING ONLY ONE OF THE 4 FOLLOWINGS POSSIBILITIES 2F 1F 2F 1F 2F 1F 2F 1F ...

Page 46: ...IRECTIONAL HORIZONTAL ROOFCURB BALTIC R410A IOM 0708 E Page 45 BAC BAH BAG BAM 065 075 1F 2F 1F Front supply air 2F Front return air WARNING ONLY ONE OF THE 4 FOLLOWINGS POSSIBILITIES 2F 1F 2F 1F 2F 1F 2F 1F ...

Page 47: ... IOM 0708 E Page 46 020 030 A B BAC BAH without auxiliary heating 395 542 BAG BAM or BAC BAH with auxiliary heating 691 246 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 48: ...M 0708 E Page 47 035 A B C BAC BAH without auxiliary heating 632 400 348 BAG BAM or BAC BAH with auxiliary heating 350 790 240 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 49: ...E Page 48 045 055 A B B C BAC BAH without auxiliary heating 749 500 382 496 BAG BAM or BAC BAH with auxiliary heating 351 1050 229 636 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 50: ...EXHAUST VERTICAL ROOFCURB BALTIC R410A IOM 0708 E Page 49 BAC BAH BAG BAM 065 075 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 51: ...XHAUST HORIZONTAL ROOFCURB BALTIC R410A IOM 0708 E Page 50 BAC BAH BAG BAM 020 030 035 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 52: ...EXHAUST HORIZONTAL ROOFCURB BALTIC R410A IOM 0708 E Page 51 BAC BAH BAG BAM 045 055 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 53: ...EXHAUST HORIZONTAL ROOFCURB BALTIC R410A IOM 0708 E Page 52 BAC BAH BAG BAM 065 075 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 54: ...TRANSITION ROOFCURB BALTIC R410A IOM 0708 E Page 53 BAC BAH BAG BAM 065 075 1D Down supply air 4D Down main power entry 2D Down return air 5D Down hot water entry 8 Main power entry 9 Exhaust ...

Page 55: ...ENERGY RECOVERY OPTION BALTIC R410A IOM 0708 E Page 54 020 030 Part 1 and 2 are supplied loose Fresh air and extracted air hood closed Exhaust air Fresh air Exhaust air Fresh air ...

Page 56: ...ENERGY RECOVERY OPTION BALTIC R410A IOM 0708 E Page 55 035 Part 1 and 2 are supplied loose Fresh air and extracted air hood closed Exhaust air Fresh air Exhaust air Fresh air ...

Page 57: ...ENERGY RECOVERY OPTION BALTIC R410A IOM 0708 E Page 56 045 055 Part 1 and 2 are supplied loose Fresh air and extracted air hood closed Exhaust air Fresh air Exhaust air Fresh air ...

Page 58: ...ENERGY RECOVERY OPTION BALTIC R410A IOM 0708 E Page 57 065 075 Part 1 and 2 are supplied loose Fresh air and extracted air hood closed Exhaust air Fresh air Exhaust air Fresh air ...

Page 59: ...tre from centre to centre Check that according to the diagram below figure 37 the following ratio remains the same A mm 20 P mm The belts should always be replaced when The disk is set to maximum The belt rubber is worn or the wire is visible Replacement belts must have the same rated size as the ones they are replacing If a transmission system has several belts they must all be from the same manu...

Page 60: ...lley in both hands and shake it vigorously to make sure everything is in place Fill the holes with grease for protection NOTE During installation the key should never protrude out of its groove After 50 operating hours check that the screws are still in place Fig 39 MOTOR PULLEY INSTALLATION AND REMOVAL The pulley is held in position by the key and a screw located in the groove After unlocking rem...

Page 61: ...bed power which may result in having to increase the motor size To carry out the adjustment and to avoid a time consuming re start stop the machine and if necessary lock the main switch First unscrew the 4 Allen screw s on the pulley see figure11 Actual diameter DM or distance between faces for a given number of turns from fully closed with SPA belt in mm Pulley type Pulley External Diameter Min D...

Page 62: ... x 0 76 x 0 9 With the fan rpm and the mechanical power at the fan shaft an operating point and the supplied airflow can be estimated using the fan curves CHECKING AIRFLOW AND ESP Using the fan curves on page 25 26 27 the airflow the total pressure available PTOT and the corresponding dynamic pressure Pd can now be estimated for a specific operating point The next step consists in estimating the p...

Page 63: ...161 105 4500 43 14 108 66 133 135 138 38 55 247 165 030 5400 62 25 160 89 187 190 193 55 79 352 238 5000 22 5 62 51 75 78 81 25 24 149 105 6300 36 14 104 76 134 138 141 39 38 230 167 035 7600 52 24 155 105 189 193 197 58 56 331 243 6500 23 3 52 56 81 85 89 20 29 113 80 8100 36 10 86 82 141 145 150 32 45 170 124 045 9700 51 18 127 113 196 201 207 46 64 239 177 7200 28 6 66 67 94 98 102 25 35 136 98...

Page 64: ... pulley end plates is 25 7mm from table 2 it can be determined that the motor pulley has a diameter of 99 2mm rpm FAN rpm MOTOR x DM DF 1430 x 99 2 160 886 6 rpm Using the fan curve below the operating point can be located It can be determined that the fan is providing approximately 6300 m3 h with a total pressure PTOT 530 Pa The pressure losses in the unit are the sum of all pressure drops across...

Page 65: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 64 PERFORMANCE CURVES AT12 9S ROOF TOP ...

Page 66: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 65 ROOF TOP AT15 11S ...

Page 67: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 66 ROOF TOP AT15 15S ...

Page 68: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 67 AT15 11G2L ROOF TOP EXHAUST ROOF CURB ...

Page 69: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 68 AT10 10S EXHAUST ROOF CURB ...

Page 70: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 69 EXHAUST ROOF CURB AT10 8G2L ...

Page 71: ...VENTILATION AIRFLOW BALANCING BALTIC R410A IOM 0708 E Page 70 EXHAUST ROOF CURB AT10 10G2L ...

Page 72: ...on Airflow in page 3411 25Pa by default No filter in page 3412 50Pa by default Dirty Filter in page 3413 250Pa by default The actual pressure drop measured accross the coil can be read on the Climatic Display DS50 in menu 2131 The following faults may be identified Fault code 0001 AIRFLOW FAILURE if measured ΔP across the filter and coil is below the value set in page 3411 Fault code 0004 DIRTY FI...

Page 73: ...d check the AUF sub menus o AU1 automatic acceleration deceleration must be set to ZERO o Acc acceleration set to 50 s o Dec deceleration set to 30 s o LL low speed set to 0Hz o UL high spee set to 50Hz o tHr motor thermal current adjust this setpoint equal to nominal motor amps o uL motor nominal frequency set to 50Hz o uLu nominal motor voltage set to 400V If those parameters are unseen check th...

Page 74: ...or 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...

Page 75: ...Page 74 Connection HWC B box Connection HWC C box Connection HWC D box Connection HWC E box Pipe Internal Diameters DN MAXIMUM WORKING PRESSURE 8 BARS MAXIMUM WORKING TEMPERATURE 110 C B020 B030 B035 B045 B055 B065 B075 H 20 20 20 25 25 25 25 Fig 46 ...

Page 76: ...against overheat via a high temperature overload protection set at 90 C and located less than 150mm after the heater itself There are three sizes available for each size of unit S Standard heat M Medium heat H High heat The standard and Medium heat electric heaters are staged control with 50 or 100 The high heat versions is controlled through a fully modulating triac 380V 400V 415V Module size Cur...

Page 77: ...the gas flow rate necessary to provide the heating nominal output Number of male threaded connections 3 4 UNIT SIZE 20 25 35 45 55 65 75 S POWER 1 1 1 1 1 1 1 H POWER 1 1 1 1 1 2 2 GAS FLOW for G20 at 20mbar and 15 C m 3 h UNIT SIZE 20 30 35 45 55 65 75 S POWER 2 2 2 3 3 5 7 5 7 H POWER 3 3 5 6 6 11 5 11 5 For modulating gas we have just H power for C D E box The gas supply of a Rooftop gas unit m...

Page 78: ...on 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 Ionisation within 5sec Normal running Otherwise fault on gas ignition control block after 5 minutes fault reported on the climatic controller If incorrect sequence refer to the fault analysis table to ide...

Page 79: ...w by one turn Check and adjust if necessary the valve Inlet pressure to 20 0mbar G20 or 25 0mbar for Groningue G25 or 37 0mbar for propane G31 after gas burner ignition fig 51 High Heat Injection Pressure Checks 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 Check and adjust if necessary the valve OUTLET pressure...

Page 80: ... 54 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 G20 20 0 1 3 5 0 1 8 4 0 2 G25 Groningue 25 0 1 3 5 0 0 1 12 3 0 2 G31 GPL 37 0 1 9 14 0 0 3 31 4 0 6 Valve electrical control Check these values with an ohmmet...

Page 81: ...e rooftop fig 58 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 res...

Page 82: ...ntrol Valve Closes BURNER STOPS Gas Low Pressure switch Gas Ignition Control Block Signal Normal Operation 6 Minutes Delay Pre Ventilation 30 seconds Fire up Electrode 4s Gas Valve Open Ionisation 1second after the end of sparking Gas Valve remains Open Gas Control Valve Closes BURNER STOPS Fault on Gas Control Block Signal from Ionisation probe still ON Air Press Switch ON or Backfire Thermostat ...

Page 83: ...he 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 pre ventilation the fire up 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 ...

Page 84: ...he 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 loose 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 f...

Page 85: ...HEATING GAS BURNER BALTIC R410A IOM 0708 E Page 84 MODULE GAZ 20KW B BOX MODULE GAZ 33KW B BOX Fig 67 Fig 68 ...

Page 86: ...HEATING GAS BURNER BALTIC R410A IOM 0708 E Page 85 MODULE GAZ 20KW C BOX MODULE GAZ 46KW C BOX Fig 69 Fig 70 ...

Page 87: ...HEATING GAS BURNER BALTIC R410A IOM 0708 E Page 86 MODULE GAZ 33KW D BOX MODULE GAZ 60KW D BOX Fig 71 Fig 72 ...

Page 88: ...HEATING GAS BURNER BALTIC R410A IOM 0708 E Page 87 MODULE GAZ 60KW E BOX MODULE GAZ 120KW E BOX Fig 73 Fig 74 ...

Page 89: ... 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 The start of the gas burner must be done at high heat injection Fig 75 Fig 78 Bearing surfac...

Page 90: ... Valve after having loosened the screw by one turn Check and adjust if necessary the valve Inlet pressure to 20 0mbar G20 or 25 0mbar for G25 after gas burner ignition fig 81 High Heat Injection Pressure Checks 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 Check and adjust if necessary the valve OUTLET pressure ...

Page 91: ... the high heat Re position the stoppers and close the pressure ports After the adjustment of the low heat re verify the high heat Pressure adjustments table for each type of gas mbar Category Supply pressure Low Heat Injection mini High Heat Injection G20 20 0 1 1 5 0 03 8 4 0 2 G25 25 0 1 3 2 25 0 05 12 3 0 2 G31 NA NA NA Valve electrical control Check these values with an ohmmeter Re position th...

Page 92: ...UBLESHOUTING 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 THE GAS BURNER FOR MAINTENANCE PURPOSES Idem non modulating gas burner MODULATING GAZ 46KW C BOX MODULATING GAZ 60KW D BOX Fig 87 Fig 88 ...

Page 93: ...HEATING MODULATING GAS BURNER BALTIC R410A IOM 0708 E Page 92 MODULATING GAZ 120KW E BOX Fig 89 ...

Page 94: ...4V AC or DC 98 Analog inputs 99 Ambient temperature setpoint offset 4 20 mA signal 99 Minimum fresh air setpoint 4 20mA signal 99 Entry for a meteorological sensor 99 Input for meteorological sensor for relative humidity 99 Free temperature probe connection 99 Free relative humidity sensor connection 99 SCHEDULING CLOCK SETTING DC COMFORT AND DM 50 MULTI CUSTOMER DISPLAY Buttons 101 Brightness Con...

Page 95: ...tic perturbations Connection Sensors and Probes External sensors or probes connection must be carried out with the following cable Cable length up to 20m AWG22 0 34 mm 1 pair crossed with screen 2 pairs for CO2 sensor Cable length up to 50m LiYCY P 0 34 mm 1 pair with general shield 2 pairs for CO2 sensor The cable length should not exceed 50m For a better electromagnetic protection Lennox recomme...

Page 96: ...ront panel on the back piece using the flush head screws supplied Finally fit the click on frame Display DC50 or DM50 is connected to the Climatic with the DT50 screw connector Connection must be carried out by the following cable Cable length up to 300m AWG22 0 34 mm 2 pairs crossed with screen Cable length up to 500m LiYCY P 0 34 mm 2 pairs with general shield The cable length should not exceed ...

Page 97: ... The intercard bus pLan is connected to Climatic on the J11 connector of board BM50 A star connection is not recommended for an optimum operation it is advised to connect a maximum of two cables per unit Connection must be carried out by the following cable Cable length up to 300m AWG22 0 34 mm 2 pairs crossed with screen Cable length up to 500m LiYCY P 0 34 mm 2 pairs with general shield The cabl...

Page 98: ...imum operation it is advised to connect a maximum of two cables per unit In case of RS485bus a resistance of 120Ω 1 4W can be connected on the last unit between the terminals and Connection must be carried out by the following cable Cable length up to 300m AWG22 0 34 mm 2 pairs crossed with screen Cable length up to 1000m LiYCY P 0 34 mm 2 pairs with general shield The cable length should not exce...

Page 99: ... Unit operating Zone BMS Free Free for BMS acting Exhaust 1 Drive exhaust fan n 1 Exhaust 2 Drive exhaust fan n 2 Exhaust 3 Drive exhaust fan n 3 Digital Inputs 24V AC or DC The following items can be used for each input Not Used No contact Sw Unoc Active Unoccupied Mode Dis Cp AH Stop of all compressors and auxiliary heating Dis Comp Stop of all compressors Dis 50 Cp Immediate stop of 50 of the c...

Page 100: ...emperature set point A 12mA signal will give a 20 C unit temperature set point A 20mA signal will give a 25 C unit temperature set point Minimum Fresh Air Set Point 4 20mA Signal The 4 20mA signal sent to the unit is linearly converted to a 0 100 fresh air damper opening request Entry for a Meteorological Temperature Sensor The 4 20mA signal sent to the unit is linearly converted using a 40 C to 8...

Page 101: ...al 8 30 a m 8h00 12h00 13h50 20h30 22h00 Monday Unoccupied Z A Z B Z C Unoccupied Tuesday Wednesday Thursday Friday Saturday Sunday For each time zone the set following set points following can be modified LIST SET POINT BY ZONE Ambient temperature Set point average Set point dynamic Minimum fresh air Programming Beginning of zone each day Start Uno Start z A Start z B Start z C Note Monday is con...

Page 102: ...e clock Enter Confirms the selection Esc Return to the previous display Down Access overrides or decrease values Brightness Contrast The display has a set contrast but this can be adjusted manually For manual adjustment of the contrast press the Prg and Clock buttons simultaneously and press buttons or to increase or reduce the contrast Configuring the terminal address Sdc 1 The address of the ter...

Page 103: ...e left up to number 12 on the right A unit that is disconnected or switched off cannot be displayed by the DM50 The number in brackets at the bottom left indicates the number of the BM50 currently connected to the DM50 In the event of a fault on one or other of the BM50s identified the Prg button is illuminated in red and the symbol for the units concerned flashes To display another unit from the ...

Page 104: ...o position the cursor over the time With button or set the time and confirm with button Position the cursor over minutes With button or set the minutes and confirm with button Position the cursor over month With button or set the month and confirm with button Position the cursor over year With button or set the year and confirm with button Position the cursor over hours Pressing the Esc returns to...

Page 105: ...n the unit screen Sdc 8 is displayed The Clock button is illuminated All buttons are deactivated The only way to regain control of the DC50 is to clean or replace the filters in the unit In the event of activation of a fault on the unit screen Sdc 9 is displayed Button Prg is illuminated All buttons are deactivated The only way to regain control of the DC50 is to resolve the fault on the unit To d...

Page 106: ... unit is stopped the Sdc 13 screen appears To start the unit press button The unit starts and the main screen appears 1 Week Override This function overrides the operating periods for a maximum of 7 days Sdc 14 From the Sdc 12 screen press button twice to position the cursor over the Override a period line With button or set the period desired and confirm with button The Sdc 14 screen appears With...

Page 107: ...t Pump 3332 BMS 09H 9 R W L Enable Run eco On the Economiser is running Off the Economiser if stopped 3353 BMS 0AH 10 R W L Enable Run CO2 Sensor On Switch on the CO2 control on a Zone Off Stop the CO2 control on a zone 3354 BMS 0BH 11 R W L Enable OFF Force the unloading of compressors in cooling mode 3355 BMS 0CH 12 R W L Enable OFF Force the unloading of compressors in heating mode 3356 BMS 0DH...

Page 108: ... On Off Gas Burner 1 2615 2DH 45 R L On Off Gas Burner 2 2616 2EH 46 R L On Off Gas Burner High power 1 2617 2FH 47 R L On Off Electrical heaters 1 2625 30H 48 R L On Off Electrical heaters 2 2626 31H 49 R L Dry contact Digital Input Free 1 BM50 J8 ID13 2151 32H 50 R L Dry contact Digital Input Free 2 BM50 J8 ID14 2152 33H 51 R L Dry contact Digital Input Free 3 BE50 J4 ID1 2153 34H 52 R L Dry con...

Page 109: ... in Room in Dehumidification set point 3341 BMS 08H 8 R W 10 1 0 Humidity Desired Minimum relative humidity in Room in Humidification set point 3342 BMS 09H 9 R W not used 0AH 10 R W not used 0BH 11 R W not used 0CH 12 R W 1 1h Clock Hour 3121 0DH 13 R W 1 1m Clock Minute 3122 0EH 14 R W 1 1 Clock Day of the month 3123 0FH 15 R W 1 1 Clock Month 3124 10H 16 R W 1 2001 Clock Year 3125 11H 17 R W 10...

Page 110: ...e 2 BE50 J9 B2 2162 33H 51 R 10 1 0 c Dry contact Temperature Free 3 BE50 J10 B3 2163 34H 52 R 10 1 0 c Dry contact Temperature Free 4 BE50 J10 B4 2164 35H 53 R 10 1 0 Dry contact Humidity Free 1 BE50 J9 B1 2165 36H 54 R 10 1 0 Dry contact Humidity Free 2 BE50 J9 B2 2166 37H 55 R 10 1 0 Dry contact Humidity Free 3 BE50 J10 B3 2167 38H 56 R 10 1 0 Dry contact Humidity Free 4 BE50 J10 B4 2168 39H 57...

Page 111: ...Condenser Water bit 3 High Temperature Condenser Water bit 4 Flow Switch Condenser Water bit 5 Smoke Detector bit 6 Fans Condenser bit 7 Compressor 1 H P I P bit 8 Compressor 1 L P bit 9 Compressor 2 H P I P bit 10 Compressor 2 L P bit 11 Compressor 3 H P I P bit 12 Compressor 3 L P bit 13 Compressor 4 H P I P bit 14 Compressor 4 L P bit 15 40H 64 R not used ...

Page 112: ...Outside 81 output 22 Relative Humidity Outdoor 2121 ANL 23 O_Ha_Outside 23 output 23 Absolute Humidity Outdoor 2123 INT 1 I_Sp_BMS_Dog 8 input 208 INT 1 O_Sp_BMS_Dog 8 output 208 BMS Activation of the control by a computer or an automat mode BMS is activated if this value is different from zero This value is decreased every second 3932 INT 2 I_Sp_EcoMini_BMS 8 input 209 INT 2 O_Sp_EcoMini_BMS 8 ou...

Page 113: ...essor Heat pump 2 2527 DGT 23 O_Od_Comp_3 95 output 437 On Off Compressor 3 2536 DGT 24 O_Od_CPac_3 95 output 438 On Off Compressor Heat pump 3 2537 DGT 25 O_Od_Comp_4 95 output 439 On Off Compressor 4 2546 DGT 26 O_Od_CPac_4 95 output 440 On Off Compressor Heat pump 4 2547 DGT 27 O_Od_GasHeat_11 95 output 441 On Off Gas Burner 1 2615 DGT 28 O_Od_GasHeat_2 95 output 442 On Off Gas Burner 2 2616 DG...

Page 114: ...ture Ambient 098 Flow rate water condenser 031 Humidifier 099 Smoke detector 032 Low Humidity Ambient 111 Circuit 1 Probe or Sensor 033 High Humidity Ambient 115 Circuit 1 High pressure or electrical protection 041 Pump 117 Circuit 1 Low pressure 051 Recovery Module Motor failure 118 Circuit 1 Risk of Frosting 052 Recovery Module Wheel failure 121 Circuit 2 Probe or Sensor 070 Clock card 125 Circu...

Page 115: ...T12 Blower temperature sensor B61 HP switch control for defrost MS1 Blower fan motor MS1 B14 Hot water coil antifreeze thermostat B62 HP switch control for defrost YV2 Hot water 3 way valve B17 Return Regulation Temperature Sensor CA Check valve YV11 Compressor MG1 MG2 Cycle reversible valve B41 Compressor MG1 high pressure safety switch DT Thermostatic expansion valve B8 B9 Discharge Gas thermost...

Page 116: ...PRINCIPLE SKETCHES BALTIC R410A IOM 0708 E Page 115 BAH 035 to 055 dual circuit BAC 035 to 055 dual circuit ...

Page 117: ...PRINCIPLE SKETCHES BALTIC R410A IOM 0708 E Page 116 BAH 065 to 075 dual circuit BAC 065 to 075 dual circuit PIPE DIAMETERS PIPE DIAMETERS EQUALIZING LINE EQUALIZING LINE EQUALIZING LINE ...

Page 118: ...HOT WATER COIL DIAGRAM BALTIC R410A IOM 0708 E Page 117 NOTA Maximum supply pressure 8bar Maximum temperature 110 C DN20 Model size 20 30 35 DN25 Model size 45 55 65 75 ...

Page 119: ...e 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 the expansion Valve Ice plug in the expansion valve Heat the main body of the valve If the LP increases and then decreases gradually empty the circuit and replace the drier Incorrect insulation of t...

Page 120: ...alve low LP and increasing HP Very high discharge temperature High amps measured at compressor Check operation of the valve by going through cycle inversions Change if necessary Refer to LP problems 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 th...

Page 121: ...m of the refrigeration section bulkhead Water ingress in the filter compartment 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 DC50 DS50 FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION DC50 Nothing is written on the screen but it s enlightened Problem of addressing pLAN on the DC50 Press...

Page 122: ...intenance of your rooftop will extend its operating life and reduce operating faults Symbols and Legend X 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 inst...

Page 123: ...ccording to this document 15 Check clock settings Check the time and date of the control o 5 Check the position and tightness of refrigeration components 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 30 Check Airflow r...

Page 124: ...tance as required o 1h if repl ace men t Check anti vibration mountings for wear and tear Visually check anti vibration mountings on compressors and centrifugal fan Replace if damaged o 1h if repl ace men t Check refrigeration circuit for traces of acid in the oil Take a sample of oil from the refrigeration circuit Check Glycol concentration in the HWC circuit Check the glycol concentration in the...

Page 125: ... 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 highly resistant to corrosion the warranty will not be applied for rooftop installed at less than 1000m away from the sea Note With the exception of the casing the rest of the machine is covered by t...

Page 126: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 125 ...

Page 127: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 126 ...

Page 128: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 127 ...

Page 129: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 128 ...

Page 130: ...CERTIFICATES G4 FILTERS BALTIC R410A IOM 0708 E Page 129 ...

Page 131: ...CERTIFICATES F7 FILTERS BALTIC R410A IOM 0708 E Page 130 ...

Page 132: ...CERTIFICATES CLIMAVER 202 BALTIC R410A IOM 0708 E Page 131 ...

Page 133: ...CERTIFICATES CLIMAVER 274 BALTIC R410A IOM 0708 E Page 132 ...

Page 134: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 133 ...

Page 135: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 134 ...

Page 136: ...CERTIFICATES BALTIC R410A IOM 0708 E Page 135 ...

Page 137: ...fications Ratings and Dimensions are subject to change without notice and without incurring liability Improper installation adjustment alteration service or maintenance can cause property damage or personal injury Installation and service must be performed by a qualified installer and servicing agency ...

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Lennox BAC020SNM, Installation, Operating And Maintenance

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