Transcription
Makeup Air SystemsWhat goes out, must come in
2 Makeup Air SystemsMUASMakeup Air SystemWhy do we need makeup air?In a nutshell - we would otherwise have problems. Today's homes are built to be more energy-efficient."Tighter" construction resists the infiltration of outdoor air through the home's exterior, which limitsthe amount of makeup air the home will permit. Of course, you can only exhaust out from the home asmuch air as is able to come back in. Without makeup air, even a powerful exhaust fan can only removeas much air from the home as is permitted via infiltration.When an exhaust fan operates without sufficient makeup air, some undesirable results can occur:The exhaust system will not work to its intended capacityKitchen hood exhaust systems are sized to remove cooking-generatedheat, odors and contaminants based on the cooking equipment'sdimensions and heat rating. Inadequate makeup air can prevent akitchen hood exhaust system from adequately removing contaminants.Backdrafting of chimneys and appliance ventsInsufficient makeup air will result in depressurization in the home.Depressurization works to halt the flow of hearth and appliancecombustion products from exiting the home. This "backdrafting" canresult in a dangerous accumulation of harmful gases in the home.Studies by the Building Performance Institute (BPI) and ResidentialEnergy Services Network (RESNET) have shown that as little as 5 Pa(0.02" w.g.) depressurization can cause backdrafting.Non-compliance with the US and Canadian building codesIn the US, the construction industry has long recognized the needfor adequate makeup air for exhaust systems. Beginning in 2009and in every version since, the International Residential Code (IRC)has required that makeup air be provided for kitchen hood exhaustsystems with capacity of 400 cfm or greater.Canada's National Building Code has a section entitled, ProtectionAgainst Depressurization. Essentially, any exhaust device operatingat a higher airflow rate than the normal operating exhaust capacity forthe dwelling shall have provision for make-up air.White paper availableSPECIFIERS: please visit our website at www.fantech.net to viewour Independent Engineering White Paper, Residential ExhaustMakeup Air: Explanations and Solutions, which explains why activemakeup air is the only proper solution for your customers. 5Pa
Makeup Air Systems 3The Fantech Makeup Air System is the only solutionA home builder could actually satisfy a home's makeup air requirement byleaving a relatively large hole (or several) in the exterior wall. Although, a holein the wall might satisfy the makeup air requirement in the code, most wouldagree that such a solution is hardly ideal, especially during peak seasonalweather conditions.The "passive" solution is similar to the hole in the wall. This solution has nofan supplying air into the home, so the home MUST be depressurized for air toflow in. This results in a very large opening (or multiple ones) in order to keepthe level of depressurization below the backdrafting threshold. The passivesolution does not accommodate direct filtering and tempering, since it is notfan-forced.The Fantech's Makeup Air System (MUAS) is a "powered" or "fan-forced"system. The MUAS is triggered when the compensated exhaust system isenergized. The MUAS damper opens and the MUAS fan is powered on. The fanis speed-controlled relative to the speed of the compensated exhaust system'sfan speed. In other words, as you speed up the exhaust fan, the MUAS fanspeeds up too, and vice versa.Fantech Makeup Air System advantages at glance: Automatic, infinitely modulating air flow in proportion to the exhaust Particulate matter is filtered from the outdoor air before it is delivered tothe home Since it is fan-forced, makeup air can be ducted to where it can be mostsuitably delivered to the home Cold outdoor air can be tempered with optional MUAH heater kits MUAS can be set up by the installer for a variety of pressure schemes:slightly negative, slightly positive, or balanced MUAS provides the EXACT amount of air needed - no more, no less Complies with the building codeFantech Makeup Air Controller (FMAC)The patented FMAC is the brains of the makeup air system. While the compensated exhaust system is operating, the makeup air fansupplies air at a rate necessary to maintain the desired building pressure scheme as set up by the installer. The makeup air flow rateautomatically and infinitely varies proportionally with the speed at which the exhaust is operated by the homeowner. A neutral (balanced)pressure scheme is common, but the installer can also employ a slightly positive or negative pressure scheme should he desire.The FMAC includes a current transducer, system controller, transformer, and a NEMA electrical enclosure.
4 Makeup Air SystemsMakeup Air SystemDucted ComponentsDuct SilencerProvides ducted sound attenuationbetween makeup air fan and the locationof makeup air delivery to the home.Makeup Air FanEC motor-driven fan isautomatically speed-controlled bythe makeup air system controller.Fast ClampLined with neoprene togive a vibration-absorbing,tight fit.Duct Heater(optional)Controlled via dischargeair temperature, the heaterautomatically varies itsmodulating heat output todeliver air at the temperatureset point, even as the airflow rate and outdoor airtemperature vary.Filter CassetteGalvanized housing with filter access includesMERV 8 filter for removing dust and pollenbefore air is delivered to the home.Shut-off DamperNormally closed, motorizeddamper is open only when makeupair system is operating.Wall Intake HoodAir inlet to makeup air system;includes bug screen.
Makeup Air Systems 5Beginning in 2009 the International Residential Code (IRC ), used in the US has included a kitchen makeupair requirement. A paragraph in chapter 15 of boththe 2009 and the 2012 IRC reads:M1503.4 Makeup air required:Exhaust hood systems capable of exhausting in excessof 400 cfm shall be provided with makeup air at a rateapproximately equal to the exhaust air rate. Suchmakeup air systems shall be equipped with a meansof closure and shall be automatically controlled to startand operate simultaneously with the exhaust system.
6 Makeup Air SystemsThe heater automatically varies itsmodulating heat output to deliver airat the temperature set point, evenas the air flow rate and outdoor airtemperature vary.21Makeup Air HeaterMUAH 10/10MUAS 1200Makeup Air SystemAutomatically compensates an exhaust system withfan-powered, proportionally-varying makeup air.Makeup air system in a Single Family HomeA residential makeup air system needs to beboth simple and effective. It must be versatile inhow and where it can be installed in the home.It must operate automatically to accommodatea fluctuating exhaust air flow rate and a widefantechrange of outdoor temperatures. And, mostimportantly, a makeup air system needs toreplenish exhausted air while not endangeringoccupants with the potential for backdraftingappliance vents and hearth chimneys.Fantech’s Makeup Air System does more thanprovide a means to satisfy the building code– it’s an engineered solution for a complexapplication.
Makeup Air Systems 7Sound attenuation silencer for circularducts. The silencer effectively reducesnoise in the duct.SilencerLD 107Roof cap with damper flap closure,duct connection and screened exhaustopening.436FKD 10XL ECInline FanPowerful and speed-controllable, the FKDseries is popular for remotely locatedkitchen exhaust system fans.RSK 10Backdraft DamperSHL 42Kitchen Hood LinerRC 10Roof Cap5Made from commercial grade 304,22-gauge stainless steel. This Seriesfeatures a built-in infinite speed controlfor the fan, washable aluminum filtersand dimmable halogen lights.fantech
8 Makeup Air SystemsChoose a MUAS that fits your homeStep I - Size your systemSelect the Makeup Air System with capacity to compensate for the maximum air flowrate of the exhaust system being served. The MUAS includes all system componentitems except a heater (optional accessory), wiring, duct work, insulation and electricaldisconnect. To choose a heater, follow Step II.Specification dataModelMUAS 750MUAS 1200MUAS 1600MUAS 200075011,15611,60022,0002FMAC Makeup Air Control3(1) FMAC(1) FMAC(1) FMAC(1) FMACMetal Wall Intake Hood(1) FML 8(1) FML 10(1) FML 12(1) FML 14Motorized Shut-off Damper(1) ADC 8(1) ADC 10(1) ADC 12(1) ADC 14Filter Cabinet w/ Pleated Filter(1) FGR 8HV(1) FGR 10HV(1) FGR 12HV(1) FGR 14HVFan with EC-motor(1) PrioAir 8 EC(1) PrioAir 10 EC(1) FKD 12XL EC(1) FKD 14XL ECDuct Silencer(1) LD 8(1) LD 10(1) LD 12(1) LD 14Mounting Clamp (in pairs)(2) FC 8(2) FC 10Item #K46013K46014K46001K46002121132179202Maximum Airflow RateIncluded componentsShipping WeightcfmlbsAir flow rate for fan operating at full speed against 0.2" w.g. static pressure2Air flow rate for fan operating at full speed against 0.5" w.g. static pressure3FMAC includes a current transducer, a control transformer, a system control board and an electrical enclosure1MUAS 750 and MUAS 1200(2) FC 12(1) FC 12-315(2) FC 14
Makeup Air SystemsOutside average air temperature by zone** NOTE:Some areas, particularly those at high elevation, might experience colder average temperatures than the map suggests.MUAS 1600 and MUAS 2000 9
10 Makeup Air SystemsStep II - Choose your heatSelect the appropriate Makeup Air Heater (if any). Select heat capacity as desired oras suggested by map zone. Each Makeup Air Heater includes an electric heater andmounting clamps.Specification dataModelMaximum Allowable Airflow RatecfmMay be used with MUAS modelMUAH 8 / 6MUAH 10 / 10MUAH 12 / 10MUAH 12 / 207501,2001,6002,000MUAS 750MUAS 1200MUAS 1600MUAS 2000Maximum Heat OutputkW / BTUh6 / 20,49010 / 34,14010 / 34,14020 / 68,280Heater Duct Connection Diameterinch8101212Electric Heater Application TableSuggestedHeaterSelection forMap Zones4,5IncludedcomponentsZonesTemp Rise (OF)ZonesTemp Rise (OF)400cfm7 - 11474-779500cfm7 - 11385-763600cfm8 - 11326-953Zonesn/a6-9ZonesTemp Rise (OF)n/a531-4105700cfm8 - 11277 - 11457 - 11451-490800cfm9 - 11247 - 11407 - 11404-779900cfm7 - 11357 - 11354-7701,000cfm8 - 11328 - 11325-7631,100cfm8 - 11298 - 11295-9571,200cfm8 - 11266-9531,300cfm8 - 11247 - 11491,400cfm1,500cfm1,600cfmn/an/a8 - 11227 - 11458 - 11217 - 11428 - 11207 - 11401,700cfm7 - 11371,800cfm7 - 11351,900cfm8 - 11332,000cfm8 - 1132n/aElectric HeaterSDHR 8-6KSDHR 10-10KSDHR12-10KSDHR 12-20KMounting Clamp (in pairs)(1) FC 8(1) FC 10(1) FC 12(1) FC 12K46015K46017K46010K4601170757575Item #Shipping WeightlbsMap zones 9 -11 have a climate that does not necessarily require a heater for makeup air. Heat may be included, if desired.5MUAH models can only provide the temperature rise as indicated. During very cold conditions heaters might not deliver air at the temperature set point.4Temp Rise (OF)
Makeup Air Systems 11DimensionsMUAS 750 and MUAS 1200ØACBJEDHFGModelABCDEFH (optional)GJMUAS 750101030 1/7 7/89 13/1626 5/851499814112 13/1610MUAS 120010230 1/210838 1/298 13/16All dimensions are in inches.MUAS 1600 and MUAS 2000ØACBJØEDHFGModelABCDEFH (optional)GMUAS 160010 1/1230 1/18 7/38 1/238 1/2110 3/8114 1/81424MUAS 2000210 3/414230 1/2820 3/8All dimensions are in inches.6This dimension includes a 14"-12" duct size reducer (not shown), not provided.6JK124 3/1212138 1/141288K
12 Makeup Air SystemsColorado Homebuilder Meets Kitchen Makeup AirRequirement with FantechBruce Fraser of Fraser Construction LLCknows something that many builders donot. You can have a suitably sized kitchenexhaust system and still meet the IRCM1503.4 makeup air requirement withoutbreaking the bank.This “good-to-know” information cameas a result of a major kitchen addition/renovation that Fraser completed at ahome just west of Vail, Colorado, in theupscale community of Cordillera. Thekitchen already had a high-end, 1200 cfmexhaust hood that assimilated nicely withthe renovation – but the building inspectorhad some bad news. The home did notmeet the newly adopted IRC M1503.4code, which states:Exhaust hood systems capable ofexhausting in excess of 400 cfm (0.19m3/s) shall be provided with makeupair at a rate approximately equal tothe exhaust air rate. Such makeup airsystems shall be equipped with a meansof closure and shall be automaticallycontrolled to start and operatesimultaneously with the exhaust system.Project location:Builder:Contractor:Luckily, Fraser’s mechanical contractorhad solution: a new Fantech Makeup AirSystem with an electric coil for makeupair reheat.The Fantech makeup air system wasspecifically designed to help builders andcontractors to meet IRC M1503.4. Per thecode’s requirement, the Fantech systemautomatically supplies makeup air at arate that is equal to the exhaust air ofthe kitchen fan. An integral transduceractually measures the current draw fromthe exhaust fan and uses that informationto precisely regulate the volume of makeup air so air is always balanced.The packaged duct heater was particularlybeneficial in this project since theCordillera home relies on radiant ratherthan forced air for space heating.“At this home it would have been reallyexpensive to connect the supply andreturn for the makeup heat back to theboiler plant. We would have had topurchase an additional pump, andCordillera, Eagle County, COFraser Construction LLCSkyline Mechanical Inc.getting all that piping through anexisting home would have been tough,”said Justin Nielsen, owner of SkylineMechanical.Although IRC M1503.4 has challengedbuilders, it is rooted in safety. Sincemodern homes are built with far less airleakage than they have in the past, theoperation of a high-cfm exhaust hoodcan cause a negative pressure inside thehome. This can result in back-drafts fromfuel-burning appliances, which can leadto unsafe levels of carbon monoxide andother toxins inside the home.Bruce Fraser understands and respects thepurpose of the code.“My greatest concern as a builderwas to avoid any potential for carbonmonoxide poisoning. And of course wehave to be able to meet code within thebudget constraints of the project.”Exhaust hood size:Fantech products:Month, Year completed:1,200 cfmMUAS 1600March, 2015
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Makeup Air Systems 15Abiding by Code in the Pacific Northwestwith Fantech’s Makeup Air SystemSome mechanical contractors arewilling to sidestep a few buildingcodes in order to keep a builder happyand on budget. Bob’s Heating andAir Conditioning, the Washingtonstate contractor, is not one of them,especially when comes to safety.That’s why Doug Quinn, GeneralManager of Bob’s Heating makes apoint of meeting the IRC M1503.4 codefor makeup air, even though it hasn’talways been easy.Without a make-up air system, theoperation of high volume kitchen fans(common in homes today) could createa negative pressure and lead to “backdrafting” of hazardous combustionproducts (e.g. carbon monoxide) intothe home. Although some jurisdictionsmay not yet be enforcing the code,Doug Quinn says, that’s no excuse forfailing to install a makeup air system.Project location:Builder:Contractor:“We do work in just about everyjurisdiction up and down the Pugetsound region. Just because onejurisdiction is overlooking therequirements doesn’t give us theright to overlook it. The whole idea ofthat code is health and safety,” saidQuinn.It’s a point that Bob’s Heating andJayMarc Homes, a builder of finehomes in the greater Seattle areaagree on. Jeremy DeBoer, sitesupervisor for JayMarc Homes workedwith Bob’s Heating on the mechanicalHVAC installation at a new spec homeon 90th Avenue, Mercer Island, WA.Like many homes on the island, thehome had a commercial-sized oven andexhaust fan and needed a makeup airsystem.In the past, Bob’s Heating had alwaysdesigned and built make-up airsystems from individually sourcedcomponents. It was tedious and timeconsuming. The contractor decidedto try something new on the MercerIsland home. He liked the Fantechsystem because it was modular,yet included everything he needed:Fantech’s makeup air system isautomatically energized whenever thekitchen exhaust fan is operating.By virtue of the control package, itclosely matches the outgoing air withfresh makeup air, preheated as needed.Doug Quinn was impressed with theproduct’s overall capability and howeasy it was to install.“Not many homeowners understandwhat [the Code] is for, but as thebuilder we understand and we try toexplain the purpose and the benefitsto the homeowners,” said DeBoer.Mercer Island, WAJayMarc HomesBob’s Heating & AirConditioning Inc.Exhaust hood size:Fantech products:Month, Year completed:1“The installation went pretty darnwell. I’m not aware of any otherexhaust make-up air solution thatallows the flexibility to automaticallyadjust the makeup air CFM andpreheat the incoming air.”600 cfmMUAS 6501January, 2015The MUAS 650 has now been replaced with the MUAS 750.
Customer tUSA800.747.1762USsupport@fantech.netSend SA800.487.9915USorders@fantech.netFantech reserves the right to modify, at any time and without notice, any or all of its products’ features,designs, components and specifications to maintain their technological leadership position.The application rendering presented in this brochure is for visual presentation purposes only.Please, contact a building professional for technical guidance.Systemair Inc. August, 2017 Art. E1574Distributed Locally by:
Energy Services Network (RESNET) have shown that as little as 5 Pa (0.02" w.g.) . supplies air at a rate necessary to maintain the desired building pressure scheme as set up by the installer. The makeup air flow rate . 1,000 cfm 8 - 11 32 8 - 11 32 5 - 7 63 1,100 cfm 8 - 11 29 8 - 11 29 5 - 9 57 1,200 cfm n/a
