Installation Manual
Contents
1.2. EZ os Zoned Comfort System Installation Instructions fee Ogix TYPICAL PLUMBING CONNECTIONS us HORIZONTAL f E CONNECTION ISOLATION AND a PURGE ASSEMBLY ISOLATION AND HO HO PURGE ASSEMBLY el lI HOW q OLE 1 l FACE PIPING DOWN TH u AVOID AIR ENTRAINMENT IN SPAQE HEATING LIIOP H U AIR HANDLER AIR HANDLER 2 2 TANK TYPE WATER HEATER TANK TYPE WATER HEATER WITH SIDE CONNECTIONS WITHOUT SIDE CONNECTIONS Ron ISOLATION AND PURGE ASSEMBLY GWS FACE PIPING DOWN TO AVOID AIR ENTRAINMENT AIR HANDLEN IN SPACE HEATING LOOP TANKLESS WATER HEATER CONNECTIONS REV 9 30 2015 Page 5 EZ Install TM E Zoned Comfort System Installation Instructions INTRODUCTION The EZ zoned comfort system is a heating and cooling system that enhances comfort and improves efficiency by giving more control over the distribution of conditioned air Multiple thermostats provide the means to zone the home by section or level in order to gain more control This will virtually eliminate over or under conditioned spaces common in many homes today The EZ zoned comfort system is designed for use in hydronic boiler systems Hydronic Heat Pump systems or combination space and water heating systems Combo Systems Combo heating systems use the home
3. Ko logix 45 Cowansview Road Phone 855 658 4330 www ecologix ca Cambridge Ontario N1R 7L2 Fax 855 658 9384 info ecologix ca Owner s Manual amp Installation Instructions Ecologix EZ Zoned Comfort Distribution system ECOLOGIX HEATING TECHNOLOGIES INC 45 Cowansview Road Cambridge Ontario NIR 7L2 ISSUE DATE 9 30 2015 Copyright C 2014 Ecologix Heating Technologies Inc All Rights Reserved This manual may not be reproduced in whole or part by any means without prior written consent from Ecologix Heating Technologies Inc Ecologix and the Ecologix logo are Trademarks of Ecologix Heating Technologies Inc TM EZ Zoned Comfort System Installation Instructions Table of Contents lt Q l Zo logix CHECKLIST FOR THE INSTALLER sisscscsccsiscciscsseccsscssesccscssesccesssesccssstescstesssusesesccssosessseseseoasosssesasosssecasosssace 4 TYPICAL PLUMBING CONNECTIONS wicicscssecssscssssscscsssocessssseccsccsseccsssosssesevsesesesesescscsssesosssesesocssssesccssesescosse 5 INTRODUCTION A NN 6 ONO 6 LONG ONG AEE A E cava tevacstedseacuwatiuecstaaveeduna E dese duipacy ut des device vec evades davadeace evade saasedeescevedcsaaasedees cuba desvasten 6 G 6 FHC QUM Gece ta Ra Ra NO 6 COUNT e 6 CONTNUOUS POM i i a te toc dan b 7 PEG EN na a a a A o lt aeiweaeaaieesseutsesinesssneeciaavensqaetoescquateaseceae 7 Evaporator Coil Freeze Protec iii id iso etstsvesbatieee ossacaessetistaduasdvestesaiunndeassstereugesl
4. improper installation or operation accident abuse or alteration operation of device at temperatures or pressures outside of the rated capacities lime or scale deposits corrosive operating environment equipment moved from original installation location Replacements furnished under this warranty will be F O B Ecologix Heating Technologies Inc product distribution points in the United States and Canada They will be invoiced at regular prices The account will be credited the full amount when the defective part is received by Ecologix examined and approved as a valid warranty lt Warranty applies to the original purchaser but may be transferred to another owner provided the equipment is not moved from the original installation site This warranty does not apply to labour freight or any other cost associated with the service repair or operation of the product Ecologix shall not be liable for any direct special incidental or consequential damages caused by the use misuse or inability to use this product lt Ecologix is under no legal obligations to rectify including but not limited to lost profits downtime good will damages to or replacement of equipment and property we Purchaser assumes all risk and liability of loss damage or injury to purchaser and purchaser s property and to others and their property arising out of the use misuse or inability to use this product Y Y N Y Y Y REV 9 30 2015 Page 13 EZ Install
5. s water heater to provide both the space heating and domestic hot water eliminating the need HOW IT WORKS Zone dampers in the air handler operate to increase or decrease the capacity in each zone of the house as needed based on thermostat calls The controller employs a fan control strategy designed to have the capacity of the air handler meet the needs or load of the space as closely as possible This means that the blower does not run on high speed each time the room thermostat calls for heat rather the air handler dynamically adjusts its capacity The air handler runs quietly at lower speeds for the majority of the time This approach reduces fan energy requirements promotes better blending of the room air and less stratification within the living space Cooling mode uses a modulating strategy to maximize homeowner comfort Blower speed is carefully controlled to optimize dehumidification and control air stream temperatures to avoid excessive noise of coil freezing When cooling demand is low determined based on the number of zones calling or on the measured supply air temperature the blower adjust speed downwards The air has more residence time in the evaporator coil resulting in removing more moisture from the air thus maintaining the humidity in an optimum range Zone One The primary or master or zone one tells the air handler whether it is heating season or cooling season or if continuous air circulation is des
6. used in any component construction All coils and internal piping conform to ASTM B68 or ASTM B88 standards High density aluminum fins provide maximum heat transfer for small coil surface FAN AND MOTOR All fans are wide body dynamically balanced for extra quiet operation Multi directional sleeve bearing REV 9 30 2015 Evaporator Coil Freeze Protection If the evaporator coil air temperature drops outside of the expected operating range this indicates a potential evaporator coil freeze condition Coil freezing can lead to slugging liquid refrigerant going back to the compressor which will damage the compressor All EZs come equipped with a sensor and controller which will respond by shutting off the outdoor cooling unit to allow the system to warm up Note that this freeze condition is not normal and may indicate blocked ducts dirty filter or an over sized cooling unit TT Connections TT connections are provided for the heating contractor to operate a boiler or external pumps and devices with any heating call Refer to the wiring diagram in the controls user manual for details motors allow mounting in any direction for maximum installation flexibility CIRCULATING PUMP The circulating pump is matched for maximum performance Air handlers come with internally mounted pumps for ease of installation Air handlers can be special ordered with external field installed pumps when it is desirable to locate the circ
7. E AEE EE 11 Fan and 0 10 A 11 A NONE NN 11 TROUBLESHOOTING wisrssdssesescsectsesssestievsseveieessasdsedecedececccecececceecscecvecercevesceceducececeducesssedectaecesescesssedescsesscoscn 11 REV 9 30 2015 Page 2 EZ Install TM a l EZ Zoned Comfort System Installation Instructions Feo logix Thermostat e 1 AA suis tuned eave veds wis teases dveve sdeasinan lasadetodea tage Saba a seaeds tage Sana ASS 11 Wrong Zones 6 lo llo enas 11 Pump OCS TOL TUM fovea ARNO e i A E 11 PUMPS NOISY GL SATUD rs coats cist i e rat aisbsuiedelcsssbodeteoesatehs ER E R RE 11 Water heater T amp P is weeping sees eee eee 11 lrisujjicient OF NO NOAE AAA AAA 11 Water heater supply temp is unstable sess nnnneennnnnnnnnnnnnnnnnnnnannnnna tana ner nana rr anna ana rana anar rana cnc rancia 12 Cold water at hot faucet eee ee eee 12 Fan runs for cooling but not Hedges eee eee 12 Heating during Standby Mode sss sese 12 VAINA AP E e e os spa aaa aroa a ar Sa a oie VE 13 REV 9 30 2015 Page 3 EZ Install TM a l EZ Zoned Comfort System Installation Instructions Feo logix CHECKLIST FOR THE INSTALLER A Quick Check List Are the water connections to the water heater oriented in a way to avoid trapping air in the heating circuit Is the purge valve installed on the return line from the air handler upstream from the isolation valve Is the air handler hung and isolated to avoid transmitting vibration through framing and duct work
8. are used for the equipment as installed 6 Set the room thermostat for heat to energize the fan and pump If a gurgling sound is present it should subside within one minute If noise is still present after one minute repeat step 3 to purge air as necessary 7 Check pipes for heating to make sure there is flow and feel the pump motor to see if it is running hot DUCT CLEANING If proper filter maintenance is adhered to duct cleaning will not be required for the life of the equipment Page 10 EZ Install TM E Zoned Comfort System Installation Instructions mA qas logix COILS Mir conditioning and heating coils should not require cleaning if the filter maintenance schedule is adhered to If a filter is damaged or collapses from plugging dust may foul the coils If this happens replace the filter and carefully vacuum the heating coil The fan may need to be removed to gain access to the face of the heating coil AIR CONDITIONING COIL At the start of each cooling season check the drain connection to the cooling coil to ensure it is free of debris If a plugged air conditioning coil is suspected call a service technician for testing and cleaning TROUBLESHOOTING THERMOSTAT CALL ERROR If the air handler does not run when zones two or three or four are calling activate the primary zone briefly 5 seconds to set the air handler in heating or cooling mode Note that some thermostats have a delay ty
9. instructions are shipped with all accessory items and should be followed closely AIR HANDLER MOUNTING The Zone Control air handler can be installed in any direction Some precautions must be observed for some of the possible mounting positions For installations where the access door faces up or down select an air handler with an external pump to avoid the pump being mounted with its shaft vertical The pump shaft must be mounted horizontally to avoid premature failure REV 9 30 2015 m qas logix When using a boiler svstem select a boiler with an output that meets or exceeds the heat loss of the space being heated If the boiler is serving additional loads size the boiler to meet the total combined load For combo heating svstems use an approved sizing method such as the Unified Combo Guidelines published by HRAI DEFINE ZONES The space served by the air handler should be divided up into two three or four zones If in doubt it is alwavs prudent to select more than fewer zones It is easv to combine zones under one thermostat It is extremelv expensive to split ductwork to add zones once the system is installed Each zone is to be served by a single main duct by the air handler Zones can represent areas such as the basement main floor and second floor In some applications it may be desirable to divide the area in to east facing west facing and basement zones depending on solar gain Zoning based on usage is al
10. space Provide at least R 12 of insulation above ducts If cooling is required the branch and trunk lines must be insulated and sealed with a vapour barrier prior to applying house insulation RISK OF FREEZING Steps must be taken to prevent the hot water coil from freezing Coils that have failed due to freezing and damage caused by frozen coils are not covered under warranty HRV and Fresh air connections ELECTRICAL Warning Make sure unit is properly grounded Locate air handler on a separate electric circuit All air handlers operate on 115VAC 1ph 60hz line voltage All control circuits are low voltage either 24VAC or 0 10VDC THERMOSTAT The EZ air handlers are compatible with all thermostats Some electronic thermostats primarily power robbing types require the addition of a resistor between the W amp C terminals and the Y amp C terminals This is usually covered in the thermostat instruction manual A 1 000 ohm 5 watt resistor on each of the W and Y terminals will usually be enough to drain the current required to power the thermostat Some thermostats will need 250 REV 9 30 2015 If a fresh air duct is required make connection to return air plenum at least 18 inches from filter Insulate all fresh air ducts Fresh air and HRV connections to ductwork can pose arisk of dumping cold air into ductwork during periods of stand by or continuous run Calculate mixed air stream temperatures and p
11. Are the isolation valves full port Restrictive valves will limit performance Is outdoor cooling unit contactor wired according to the wiring diagram Are Thermostat connections correct including cooling and continuous run connections Do they operate their intended zone Have the packing materials been removed from the blower and the pump Is there an installation manual and controls user manual for the home owner Is the unit accessible Are there clearances for service and component replacement Is the return duct drop acoustically lined at least 6 ft of the return duct drop must be lined Is the filter cover in place Is a clean filter in place Is the supplied filter rack installed Has the electronic controller been properly configured as per instructions in the controls user manual REV 9 30 2015 Page 4 EZ Install
12. DBY MODE When heat source is a water heater the most probable cause is reverse flow through the heating loop from a Probable cause is thermal siphoning See check valve stuck check valve repair or replace valve description for details repair or replace check valve Check elevation of air handler above water heater to see if motorized valve required for positive shut off REV 9 30 2015 Page 12 EZ Install TM a i EZ Zoned Comfort System Installation Instructions tas ologix Warrantv This product is warranted bv Ecologix Heating Technologies Inc to be free from defects in materials and workmanship that affect product performance under normal use and maintenance within the applicable periods specified below Replacements furnished will carrv onlv the un expired portion of the original warrantv Two Year Parts Ecologix Heating Technologies Inc will provide replacement parts for ANX part that fail within two vears of purchase subject to the terms below Five Year Parts Ecologix Heating Technologies Inc will provide replacement parts for anv heating coils cooling coils cabinetrv and piping that fail within five vears of purchase subject to the terms below Terms Z Reasonable proof of original purchase date must be provided in order to establish the effective date of the warranty failing which the effective date will be based on the date of manufacture plus thirty days The warranty does not cover failure or damages caused by
13. ating loop See the drawing Typical Plumbing Connections at the front of this manual WATER HEATER T amp P IS WEEPING A check valve or back flow preventer may have been installed in the system Some form of pressure relief may be required Options are e Install expansion tank e Install pressure relief valve locate outlet over laundry tub or floor drain e Install combination toilet tank pressure relief valve INSUFFICIENT OR NO HEAT e Plugged air filter or coil Refer to Maintenance section for filter care and coil cleaning e Air in heating loop purge system e Inlet and outlet connections to air handler backwards reverse connections e Water heater supply tube dip tube is restricted or damaged check and or replace e Supply water temperature set too low or not calibrated properly check water temperature e Restrictions in heating loop remove restrictions check if valve is stuck isolation valves could be too restrictive or left partially closed after purging or closed valve Page 11 EZ Install TM a ai EZ Zoned Comfort System Installation Instructions fo OgIX WATER HEATER SUPPLV TEMP IS UNSTABLE FAN RUNS FOR COOLING BUT NOT HEATING Check water heater setting and temperature sensors for Room thermostat may be connected improperly Refer good contact on coil headers to Electrical section or wiring schematic on air handler for proper installation COLD WATER AT HOT FAUCET HEATING DURING STAN
14. denser is activated The zone damper for any zone not requiring cooling closes Fan speed can be controlled based on number of zones calling and their programmed cooling loads or on measured supply air temperature For systems with two stage air conditioners second stage will be activated when there is sufficient demand for cooling Refer to the controls user manual for more details Page 6 EZ Install TM E Zoned Comfort System Installation Instructions m tas logix Continuous Fan When the thermostat fan switch for the primarv zone is set to continuous fan the fan will run at low speed for all zones When there is a call for heating or cooling the normal heating or cooling speed will over ride the continuous fan setting Zones not requiring heating or cooling will close Once the thermostat is satisfied continuous fan speed will resume Features Ecologix air handlers offer manv unique features that set them apart from the competition Soft Start is a feature that starts the fan slowlv and quietly rather than a large thump common in some furnaces and air handlers PRODUCT DESCRIPTION CABINET All cabinets have a tough durable low maintenance painted finish Cabinet dimensions are designed to provide maximum installation flexibility Refer to installation requirements for more details HEATING COILS All heating coils are potable water grade copper suitable for use in plumbing systems No lead solder is
15. ired Any zone can be zone one but it is typically the main area of the building living area REV 9 30 2015 mA qas logix for a furnace The equipment can be configured for heating only heating and cooling or cooling only applications NOTICE The primarv zone must call for heating or cooling at least once at the beginning of the season to tell the EZ air handler that it is in heating mode or cooling mode The switch on the primarv thermostat is not enoughl There must also be at least one call for heating or cooling a short 5 second call is adequate Until this happens a call on zone two three or four is ignored Zones two and three and four act as slaves to the primarv zone Off All zone dampers move to the open position if there is no call for heating or cooling Heating The objective of the heating strategy is to run the blower only as high as required in order to provide good air circulation at a low noise level Because the blower speed can be programmed to adjust based on each zone s actual heating loads the fan will only run as high as necessary to satisfy the current calls When a thermostat calls for heating the internal pump starts and the boiler is activated if connected to TT The zone damper for any zone not requiring heat closes The fan will gradually ramp up to the programmed speed for the given zone Cooling When a thermostat calls for cooling the outdoor air conditioning con
16. nal strip Page 9 EZ Install TM E Zoned Comfort System Installation Instructions m tas logix DEHUMIDISTAT Dehumidistats are not necessarv Dehumidification can be controlled through EZ s cooling control settings at the controls displav Refer to Controls User Manual for more details ZONE SELECTION amp SET UP Zone 1 Any zone can be the primary zone or Zone One However it is strongly recommended that this be the main zone to be heated and cooled In a home this is typically the main living area This thermostat is the only one that is used to select continuous fan operation It also plays a critical role in telling the air handler whether to be in heating mode or cooling mode START UP PROCEDURE Do not start the air handler or water heater until ALL air has been purged 1 Fill the boiler loop or water heater with water but do not start it 2 Purge all air from the boiler heating or domestic water system 3 Purge all air from the space heating loop by closing the isolation valve on the return leg of the loop and open the drain to purge air Open the return leg isolation valve and then close the drain valve 4 Start the boiler or water heater according to the manufacturer s instructions Set the design water temperature and wait for the system to shut off You can check that the water heater is set properly during the warm up by running a small amount of water into a glass in a sink while the
17. pically five minutes before they will start the air handler in cooling the first time WRONG ZONES OPERATING Switch damper connection plugs at the zone control board Refer to the labels on the thermostat wires and at the damper connections PUMP DOES NOT RUN In areas where hard water is present the pump may stick and fail to run Often closing the isolation valve on the return leg and opening the drain port so that water flows through the pump can free this If this fails to free the pump removal for cleaning or replacement is necessary The daily pump exerciser will help prevent pump sticking refer to the Controls User Manual for instructions to make sure this feature is enabled PUMP IS NOISY AT START UP Air is present in heating loop If sound has not diminished within minute purge air in accordance with the Start Up procedures If heat source is a water heater check to make sure branch connections for REV 9 30 2015 FAN AND MOTOR Check fan for dust once a year If dirty vacuum to remove dust Keeping the fan blades clean will reduce noise and improve the capacity and efficiency of the heating system PUMP The circulating pump is water lubricated and should require no regular maintenance A cycle timer is available to exercise the pump even during prolonged periods of no heat to avoid seizing from long idle periods heating loop are horizontal to prevent the collecting of air in the he
18. rovide interlock controls to prevent freezing conditions EVAPORATOR COILS The EZ zoned comfort system is designed to provide acceptable airflow for cooling even if only one zone is operating in cooling mode However a small single zone operating for a long time or abnormal conditions such as plugged filter can pose the risk of freezing All EZ s include a temperature sensor in the supply air stream that will detect a near freezing condition and will interrupt the air conditioner until it warms up Refer to Controls User Manual ATTIC AND CRAWL SPACES Air handlers may be located in areas subject to freezing conditions It is necessary to protect the hot water coil from freezing The optional Freeze protection kit Catalogue No CP FPK can be used to cycle on the pump and blower when conditions get close to freezing The Freeze Protection Kit cannot protect piping that passes through unconditioned spaces ohm 10 watt resistors on each of the W and Y terminals The EZ air handler is compatible with all standard setback thermostats Setback thermostats can be used to achieve greater energy savings Note The wires from each thermostat should be labeled for future reference Label suggestions are 1 2 3 4 or basement main upstairs If labels are not available use one two or three or four stripes of tape Thermostat wires should be connected to terminal strip inside the air handler Each zone has its own termi
19. so acceptable office living and sleeping areas for example The air handler can be hung by securing straps through any of the existing screw holes in the cabinet When the existing screw is too short for securing a mounting strap a longer screw can be used provided care is taken not to damage any internal components When fastening straps using screws other than those supplied with the cabinet special care should be taken in the vicinity of the coil to avoid tube puncture The cabinet is designed so that the return air can be located on either side of the cabinet through the bottom of the cabinet or from the back Position the filter rack so that the filter is readily accessible Install the air handler with the door firmly screwed in place to make sure the cabinet remains square Page 8 EZ Install TM E Zoned Comfort System Installation Instructions m qas logix Provide at least 2 feet 0 75 metres of service clearance in front of the access panel of the air handler Zero clearance is acceptable on all other faces DUCTWORK Duct connections at the air handler should be labeled for future reference eg basement main upstairs Supplv trunks mav be square or round SEAL all joints and seams with metal tape or sealing compound Locate outlets at least 6 inches from outside walls or window coverings Ductwork installed in unheated spaces such as attics must be installed between the insulation and the heated
20. sstedunabeesidenssaedessteess 7 TF e 35 5 5e5 505 9s A 7 PRODUCT DESGRIPTION Pr 7 Cao 6 veves sessvcessenccensaxeessnaesbenseeatsbaseecssvareentevasbessbiavbsncstceteseteseteeeteeetbbi atid Sa SA Da Saad Da Sa Sa La Sa a La l ess deidad 7 PICGTING COILS iii DI III I ta dana 7 FARRO AOL OF a te ata nate te note nate vote bate oa io obo obo ooo ode wo oA EA E ada TNT a aT ea O O A O 7 irenlating PUMP dd lk a a E E GEE E S N ei e 7 CHECK ANTAS TE 7 EQUIPMENT SIZING AND SELECTION oie sccccicesseccssessevccessseecessevesteesesestsetessoetssssenedssessnosssessenstessoenstesseseeess 8 PROCCAUIE niaaa aaa a aaa 8 Heat Loss Heat H 8 AUP FORGET Selectioti 12 ae 8 Pef he TONES os ai a E T 8 INSTALLATION fkieren 8 Atr ONAL EFM OUTING sis tavessnonsssnnea versa snens ansnns dondebbeds annus sansa sabane anaes E e A EE AE EEEE EEES 8 DDUCEWOTK EEN EEE E A O O A 9 RISKO RT IA NT 9 EVaporator COM L G 9 Attic and Crawl Spaces AAA II NE 9 ELECTRICA DL AAA o ooer O a OLOO O I OSI aO I O OSa aO Orosa SS Srs aS SSeS s esios 9 Thermostat rsi ET ERE 9 Denni AIS i NN 10 LS AA A A g e one 10 ZANE ANA 10 Zones 2 IMA sinifika cbc 10 Duct Zone Connections to Air Handler sese 10 START UP PROCEDURE ii i aa TA et 10 SERVICE AND MAINTENANCE psssssscisssssssissssssstsssossstsssssssessecascsssosvesentoaccesssasosseensscetennsscssvesrsnsessenesosseenenee 10 B AA NN 10 Duct O A NO 10 COUTO 11 Air conditioning COL maana E E pain boagsdsieelegedeuvseuseanecens
21. ulator below the air handler such as in attic installations CHECK VALVE Check valves serve two purposes e protect against back flow of water to avoid short circuiting around the water heater during domestic water use e protect against thermal siphoning Thermal siphoning is flow of water through the space heating circuit while the circulating pump is not operating due to hot water rising by natural convection During summer months this will cause overheating interfere with air conditioning and waste energy Page 7 EZ Install TM E Zoned Comfort System Installation Instructions EQUIPMENT SIZING AND SELECTION PROCEDURE 1 Conduct a complete heat loss heat gain calculation 2 Determine inlet water temperature 3 Select Air Handler 4 Determine zones within the space 5 Select outlets per room 6 Determine Duct Layout HEAT LOSS HEAT GAIN Room by room calculations need to be completed using HRAI ASHRAE or another approved sizing methods AIR HANDLER SELECTION The selected air handler must be sized according to the following rules a Heating capacity should be between 100 and 140 of the heat loss 110 to 140 for combo systems 130 F water temp b Cooling capacity should be between 75 100 of the heat gain Do not oversize INSTALLATION The installer must adhere strictly to all local and national code requirements pertaining to the installation of this equipment Detailed
22. water heater SERVICE AND MAINTENANCE FILTER All Ecologix air handlers are provided with a pleated filter media This filter should be inspected monthly and replaced as required Replacement filters are available from Ecologix REV 9 30 2015 When initially started or after a power failure or during seasonal changeover from heating cooling this thermostat must call at least once before the air handler control will properly recognize a heating or cooling call from the other two zones Zones 2 3 amp 4 All zones with the exception of the primary zone are the same and any area to be heated and or cooled can be selected as zone 2 3 or 4 DUCT ZONE CONNECTIONS TO AIR HANDLER The 10 round duct connections on top of the air handler are labeled zone 1 2 3 and 4 NOTE Factory default settings can be re assigned Any duct connection on top of the air handler can be made Zone 1 2 3 or 4 simply by moving the damper connector locations on the zone board See wiring schematic is warming up Using a thermometer measure the temperature of the water as soon as the water heater burner shuts off If the set point temperature is too low or is above 140F 60C reset the tank control run water until the burner starts again and repeat the measurement 5 Turn on the power to the air handler and set up the electronic controller as per instructions in the Controls User Manual This is important to ensure that the correct airflows
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