Paul Francisco
Contents
1. 14 6 2 2014 ASHRAE 62 2 Resources www ASHRAE org 62 2 User s Manual available through Resources amp Publications Detailed step by step user guide through the Standard 54 00 ASHRAE Guideline 24 2008 Beyond the Standard details on IAQ commissioning and documenting 54 00 Residential Ventilation Handbook Paul H Raymer McGraw Hill 2010 52 45 gt isan 62 2 System Checklist Infiltration Credit amp Existing Homes Credit i spreadsheet System Documentation Sheet www HeyokaSolutions Residential Energy Dynamics http www residentialenergydynamics com Home aspx ResVent App for iPhone and iPad www karg com resvent622 htm That s what it s all about Paul Francisco Paul Raymer University of Illinois Heyoka Solutions pwf illinois edu paul raymer heysol com www HeyokaSolutions com pt 152. Local Exhaust o Complies with 62 2 2010 Rates i m Intermittent Continuous O appropriately labeled Kitchen 100 cfm 5 ACH o readily accessible Vented range hood required if exhaust fan flow rate is less than 5 o But if installed in an ae obvious place is likely to be turned off Bathroom 50 cfm 2 Q a I y o pol a lt 3 2 N 3 3S YOoqpueH UOTe MUAa eHUapISaYo eounos Local Exhaust Appendix A Control alternatives SSE Honeywell e For existing dwellings only i l E J Will require i o appropriately labeled reprogramming Provides alternative method of meeting o readily accessible a local exhaust requirements in kitchens and o Both of these controls i bathrooms require circuit breaker or _ That do not have any existing LOCAL fan or system override to shut off Where the LOCAL fans to not meet the CFM requirement JaoAody 6 2 2014 Infiltration Credit Install it so it works e Based on blower door result e Airis lazy e Makes use of height of building and local ravine are more weather Never use duck tape e Always choose the shortest straightest path to the outside e System must be serviceable Never never never vent into the attic Overall ventilation rate 3 ee e In line fans are designed to drag air through ducts Increase to accou nt for local exhaust Propeller or
3. axial fans are not good for shortages 5 ducts i ipi AF e Backdraft dampers can cut the airflow in e Possible decrease for infiltration greater than assumed by 62 2 Residential Ventilation Handbook McGraw Hill Paul Raymer 2009 Select t Select equipment with performance certified by PNGA or HVI fu Very quiet 1 sone or less Exhaust or Supply only ventilation Mechanically balanced ventilation Mechanically balanced ventilation with heat or energy recovery CERTIFIED 6 2 2014 Install it so it works ostal i SO it Woks The effects of duct ane on airflow Seuss in more detail xX Increasing the duct diameter from 4 to 6 will dramatically reduce the friction loss Actual length is the actual physical length of the duct run how far is it from Ato B Equivalent length is equivalent resistance to the airflow generated by the fittings Cu FT OF AIR PER MINU 600Z owAeY Ned IIIH MeIDO JOOGHUEH UOTE TUSA EIUSPISAYO e0IN0S Effective length is the sum of the Actual and Equivalent lengths 3 4 6 81 605 i LOSS IN INGRES OF WATER PER 100 FT Actual length Equivalent length Effective length Install it so it works Equivalent Lengths Description Equivalent Length Ft for rigid ducting 45 adjustable elbow 2 piece 90 adjustable elbow 4 piece Wye equal sizes Tee take off Tapered increaser reducer Hard
4. increaser reducer yoogpuey uoTeNue jeNuepisey woy Photos Paul Raym Description Equivalent Length Ft Triangular wall cap for round duct with 60 backdraft damper amp bird screen Triangular wall cap for round duct with bird screen without backdraft damper Rounded wall cap for round duct with backdraft damper amp bird screen Louvered wall cap Low profile soffit vent with backdraft damper and bird screen Roof cap low profile for round duct with Water reduces the diameter of the duct backdraft damper amp bird screen Photos Paul Raymer Air flowing across water creates waves Roof cap goose neck for round duct 35 increasing the resistance with backdraft damper amp bird screen From Residential Ventilation 10 6 2 2014 effective and expensive to operate e Both systems have to run simultaneously e Stale air is not removed at polluting locations e Very difficult to balance Install it so it works System Design Choices System distribution Les lt lt bias Inexpensive to install but marginally Air handler return Stale air from house Fresh air to house HRV TI HF Ayna Raa PIG Photos Paul Raymer Well filtered HRV installation http www ventsolutionsfbx com home Beautiful installations Ventilation Solutions Fairbanks AK Results of Bad Terminations Test the airflow In theory e
5. 2010 page 4 Whole Building Ventilation System e System types Exhaust only Supply only Balanced system Balanced system with heat or energy recovery e HRV sensible heat recovery e ERV sensible and latent heat recovery Most common ventilation system e Relies on leakage to make up the exhaust air e Could be a single fan exhausting from a single point like a bath fan Source 62 2 User s Manual 2006 ASHRAE Bathroom or Hall Exhaust Fans The grille could be disguised as a recessed light Photos courtesy of Wisconsin Weatherization Program 6 2 2014 System Choices Exhaust fans Through wall Bath fans Should be certified by HVI for both air flow and sound CERTIFIED System Choices Exhaust Onl Panasonic Whispergreen NuTone Ultra Series Air King System Choices Exhaust Only WhisperGreenS i Panasonic 1 Fana IAG Solutions F GOES DO gi g Peery Six WhisperGreen Select Base Models FV 05 11VKSL 130 to 110 CFM integrated multi speed LED Light FV 05 11VKL1 50 80 110 CFM single speed LED Light FV 05 11VKS1 30 to 110 CFM integrated multi speed FV 05 11VK1 50 80 110 CFM single speed FV 11 15VK1 110 130 150 CFM single speed FV 11 15VKL1 110 130 150 CFM single speed LED Light e Customizable all in one fan and fan LED light combinations e Pick A Flow speed selector satisfies designed air flow e Plug N Play technology provides up to t
6. 6 2 2014 What We Will Talk About Evaluating amp Applying the Re the Su certain el ae etermine compliance with the ASHRAE 62 2 2010 Residential 62 2 2010 Standard Replaced in many Nati ocations by the version but most of the Ventilation Standard basic requirements haven t changed Identify the ventilation components Paul Raymer Heyoka Solutions Review the installation and resolve issues Test the system to confirm operation Paul Francisco University of Advise the homeowner on system Illinois at Urbana Champaign maintenance Who We Are 62 2 What is it Paul H Raymer Single family multifamily up to three stories and Chief Investigator of Heyoka Solutions manufactured and modular trainer writer and developer of ventilation buildings options Considers chemical physical Author of the Residential Ventilation MAAA and biological contaminants but Handbook Lor AN does not consider thermal l Residential comfort Secretary of the 62 2 committee Acceptable AQ will not ern bika Lie necessarily be achieved even if f all requirements are met Who We Are Why do we want fresh air e Paul Francisco e Many indoor contaminants Research Engineer at Indoor Climate Carbon monoxide carbon dioxide VOCs Research amp Training Illinois Sustainable formaldehyde radon sometimes moisture Technology Institute University of Illinois particles oxides of nitrogen e
7. hree value added features e Revolutionary DC motor with SmartFlow technology 6 2 2014 system Choices Exhaust Only System Choices Exhaust Only Velta Bre BROAN 110 CFM ULTRASense H Humidity Sensing Technology fans react to a quick rise n CFM 50 to 124 in humidity to turn the fan on Sones lt 0 3 ULTRASilent Sound Technology Power 5 6 to 20 watts less than 0 3 Sones Humidity control Power 8 3 Watts NuTone Ultra Series SB110H fantech system Choices Exhaust Only XB110H 6 Duct aoe T A m Ls 9 eS 2 a Lhe 25 gw ast o DJ I fe FQ80L FQ80 0 i ba ER Me i Sones 0 4 Sones lt 0 3 70 80 50 100 110 120 Power 30 watts Power 25 watts Airflow CFM Cubic Feet per Minute Light 26 4 O 10 20 30 40 50 60 east Only Exhaust Only In Line e Model ESVD e 2 set up speeds e Low 30 40 50 60 70 90 100 120 e High 80 110 130 amp 150 e Optional 26w night light e Optional motion sensor e Optional humidity sensor All airflow below 130 cfm lt 0 3 sones o Ventilation JELItG n Source 62 2 User s Manual 2006 ASHRAE 6 2 2014 Supply only Air System choices in line fans Supply Only Supply Air Fan Residential Ventilation Handbook McGraw Hill Raymer 2009 Supply air systems including duct connections and filters and flow regulators Photos courtesy of Wisconsin Weatherization Program In Line E
8. owAey Ned Test the airflow Adjacent spaces Parking in the living room Photos Paul Raymer ents ar TNING Adjacent spaces Parking in the living room e Basically youre done But you do need to consider 13 6 2 2014 Combustion safety Maintenance Jeff May May Indoor Air Investigations LLC Tightening houses increases the risk of back drafting Increasingly important to test for problems Worst case conditions Spillage natural draft appliances CO all combustion appliances Jeff May May Indoor Air Investigations LLC 2008 J May Residue on drain pans Instructions and Labeling Information on the ventilation design and or ventilation systems installed instructions on operation and detailing any required maintenance shall be provided to the owner and the occupant Controls shall be labeled as to their function unless that function is obvious such as toilet rs exhaust fan switches 2008 J May Filters need to be cleaned Core needs to be cleaned Maintenance amp Commissioning e System is not completed until it has been tested and commissioned by the installer before leaving the house e Homeowner needs to know what the system does how it does it and why it is important Paul Raymer Homeowner needs to know how to maintain the pe i i i Intakes should be cleaned system j E Exterior hoods maintained
9. tc Technical Director for the U of Not necessarily at acute levels but there is Weatherization Training Center DOE funded substantial evidence that low levels of many Chair of the 62 2 committee pollutants can impair quality of life 6 2 2014 Ventilation Rule 3 Moving air will always seek the path of least resistance Air is like crooked rivers crooked people teenagers and cheap labor John Tooley Advanced Energy Ventilation Rule 1 One cubic foot of air cfm moves into a house only if one cubic foot of air moves out of the house 1cfm in 1 cfm out u LE ket 62 2 Wh Select a whole building airflow from the table or calculate it Select appropriate airflow rates for local exhaust Select quiet equipment whose performance is certified by HVI Install it so it works Test it to prove that it works How hard can it be Edward Brannock Pilot amp Entrepreneur Ventilation Rule 2 Air always flows from higher pressure to lower pressure Second Law of Thermodynamics ASHRAE 62 2 Requirements e Whole building ventilation A mechanical exhaust system supply system or combination thereof shall be installed for each dwelling unit to provide whole building ventilation Ventilation based on the equation or table e These CFM requirements are for whole building continuous ventilation Source ASHRAE 62 2
10. tem Design Choices Primary System Design Choices Balanced with heat or energy recover Balanced with heat or energy recovery Different efficiency ratings for HRVs and l Desiccant wheel ERV ERVs A 2nd Law of Thermodynamics Heat moves to cold wet to d at ia a eas Sensible Recovery Efficiency SRE is the number that defines the sensible energy recovered minus the supply fan S PH N energy and preheat coil energy divided S by the sensible energy exhausted plus the exhaust fan energy This Single room ERV calculation corrects for the effects of cross leakage purchased energy for _Gematiownigh speed haa jies fan and controls as well as defrost ee ee systems Heat Recovery Ventilator HRV transfers heat from the warm air stream to the cool air stream Energy Recovery Ventilator ERV transfers sensible and latent heat from warm moist air stream to the cool dry air stream Warranty on the core Lifetime Lifetime This info is available on the HVI certification sheet Controls ASHRAE 62 2 2010 requires that the occupant have the ability to shut the system off Intermittent operation requires a timer or other control 6 2 2014 Controls For blower door testing the ventilation system needs to be turned off Some controls are multiple soeed Whole building ventilation is generally set to the lower flow Both lower and higher flow rates should be tested
11. verything works in practice In by o gt lt KASZ Poe te N i A gt iF F A 11 http www cmhc schl gc ca en co maho yohoyohe inaiqu inaiqu_003 cfm Simple stuff CMHC Calibrated Garbage Bag Time to deflate small green bag Glad 66 x 91 cm 1 second 5 seconds 12 13 seconds Test the airflow A Balometer will measure flows between 10 and 500 cfm ku i Vane anemometer is less effected Paesi N TES i saf Photos Paul Raymer by ambient conditions like temperature humidity and altitude Accurate between 0 and 75 cfm 6 2 2014 Test the airflow FlowFind ERETTE Jumping the inputs between the channels allows both the pressure and CFM to be monitored If the flow exceeds 124 cfm a different device must be used JowAey ned Test the airflow Duct Blaster with DG700 Flow Blaster with DG700 JowAey Ned Q241 Duc Tester with DM 32 gauge 12 6 2 2014 Test the airflow Adjacent Sp aces Calibrated ee eee Fan Under Test Duct Tester Measures shall be taken to minimize air movement across envelope components separating dwelling units and to dwelling units n from garages unconditioned crawl spaces and ncondition Ics When the pressure at Point A 0 pa the flow UNECO d tio ed attics through the Duct Tester fan the flow through the fan under test Ventilation air needs to come from outdoors J
12. xhaust Fans S Motion sensing grille In line fan with lighted grilles Dehumidifying supply air system from Therma stor Supply Ve on to Ducts must be tight or they can bring in bad air Must have good motorized damper Must be controlled to run even if no heat is needed Furnace fan energy use can be high Intake must be kept clean of yard debris and other outdoor stuff Bedroom i Kitchen am Fan cycler switch runs air handle at 20 minute intervals Supply side of air handler S Outside air supplied to return side of the air handler Aldes CAR Ea Q AirCycler g Field Controls Damper Balanced Ventilation Exhaust and supply ventilation should have equal cfm Balanced without recovery Heat Recovery Ventilator HRV e unit transfers sensible heat only with no humidity transfer Energy Recovery Ventilator ERV e Unit transfers sensible heat and humidity Source Residential Ventilation Handbook McGraw Hill Paul Raymer 2009 6 2 2014 6 2 2014 Balanced Ventilation HRV ERV Heat Recovery Ventilators HRV HVAC Air Handler Illustrates a connection to i a Pca gt ral the existing At te HVAC system lt C 2 ie TS A za Source 62 2 User s l ba 1 Manual 2006 ASHRAE HRV ERV F Must be installed in an accessible place for service Should be inside the conditioned space for maximum efficiency Primary Sys
Download Pdf Manuals
Related Search