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Healthy Home System™

Healthy Home System™. Residential Ventilation Part 1. Whole House Air Quality. WWW. FIELDCONTROLS.COM. Introduction. Field Controls HHS Demo Introduction FAS Fresh Air System D. Determining the ventilation ASHRAE 62.2 Intermittent Ventilation E. Equivalent Feet

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Healthy Home System™

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  1. Healthy Home System™ Residential Ventilation Part 1 Whole House Air Quality WWW. FIELDCONTROLS.COM

  2. Introduction • Field Controls HHS Demo • Introduction • FAS Fresh Air System • D. Determining the ventilation • ASHRAE 62.2 • Intermittent Ventilation • E. Equivalent Feet • F. Static Pressure • G. Sizing & Selecting the Damper • H. Ventilation timing adjustments 3

  3. Introduction Healthy Homes

  4. Introduction What, How, When of Ventilation

  5. Introduction Cabin Ventilation & Filtration

  6. Introduction Air Conditioning Car Filters

  7. Introduction Vacuum Cleaner Filter

  8. Introduction INDOOR AIR QUALITY • In today’s health conscious society, all of us take great interest in the quality of food and water we eat and drink. • In fact: • We eat approximately 2 – 3 lbs of food a day • We drink approximately 3 – 4 pounds of water a day • What about the air we breath? • How much air do we breath in a day? 8

  9. Asthma and Allergy Foundation

  10. FAST FACTS Asthma and Allergy Foundation • Every Day in AMERICA! • 44,000 people have an asthma attack • 36,000 kids miss school due to asthma • 27,000 adults miss work due to asthma • 4,700 people visit the emergency room due to asthma • 1,200 people are admitted to the hospital due to asthma • 9 people die from asthma

  11. FAST FACTS • Droppings or body parts of cockroaches and other pests can trigger asthma • Proteins are found in cockroach feces and saliva that can cause allergic reactions • Cockroach allergens likely play a significant role in asthma in many urban areas

  12. FAST FACTS

  13. FAST FACTS

  14. Clothes Dryer Inefficiency Condition Air to 70OF 95O F Air 12,000 CF Air Hot Wall Dryer Heat 70OF air to 125O F, circulate to remove moisture, and then exhaust All the air in a 1,500 square foot home is exhausted out over a 60 minute cycle

  15. Clothes Dryer Inefficiency Condition Air to 70OF Hot Humid Air 12,000 CF Air Hot Wall Dryer A home is depressurized from exhaust devices. Clothes dryer, bath fan, kitchen exhaust, attic fan, central vacuum, single pipe fan assisted furnace, boiler or water heater, supply & return duct leakage etc… Air will enter randomly any way it can! Chimney’s can back draft from insufficient combustion and/or makeup air. Toxins can enter from sumps, attached garages, basements and crawl spaces.

  16. CONTROL • Healthy Home System™ When combined with other Healthy Home System™ components, the control delivers year round air quality - even when not heating or cooling.

  17. FRESH Whole House Ventilation

  18. Introduction FRESH Solution • Whole House Ventilation • Manages Fresh Air ventilation and/or makeup air • Utilizes Central Fan Integrated Ventilation CFIV • Programmableelectromechanical power opened power closed fresh air damper solution • Improves air quality by diluting indoor air with fresh outdoor air • Lowers indoor concentration of contaminants developing a Healthy Home 18

  19. CONTROL Wiring the Healthy Home System Controller

  20. FRESH Benefits of the Fresh Air System (FAS-1) • Supplies fresh air to the home from a known source and in a known quantity. • Exhaust systems pull air in from any available source, including undesirable locations such as a garage, attic or crawl space that could have a potentially negative impact on air quality. • Exhaust systems may have little effect on indoor air quality if pull air from leakage sites close to the fan, effectively sending the fresh air right back out the exhaust. • Periodically re-circulates air within the entire home. • Improves comfort by mixing air to de-stratify and balance temperature and humidity throughout the home. • Improves Indoor Air Quality year-round by reducing contaminates when a whole house filtration and/or UV treatment system is present. Whole house filtration and UV treatment can only occur when the central fan operates. • Evenly distributes the fresh air throughout home. • Because the system is ducted into the central system and works in concert with the central fan, the fresh air is properly distributed throughout the whole house. • Cost effective ventilation • The FAS-1 takes advantage of normal operating frequency of the central heating and cooling system . • FAS-1 installation cost is low and the payback to the homeowner is greatly reduced versus an HRV. • Depending on the region, the FAS-1 operating cost can range from $20/year in cold climates to $80/year in warm climates. • Does not contribute to depressurization like an exhaust fan does. • Depressurization can be a safety concern when atmospherically fired appliances are in use in the home. • Does not over-pressurize a home like a supply fan could. • During intake of fresh air, temporary slight pressurization of the home can occur, however the system does not operate continuously so once operation ceases the pressure quickly rebalances through natural ex-filtration.

  21. FRESH • The FAS-1 is a central fan integrated ventilation (CFIV) system. • Automatically delivers cost effective, quality ventilation year-round. • Provides dilution air and air changes which are critical to improved air quality. • Delivers fresh air from a known location and quality source. • Exhaust fans do not control source of the replacement air… can pull contaminated air from garage, attic, or crawl space. • Meets ASHRAE 62.2 ventilation standard. • Circulating air year-round enhances effectiveness of whole house filtration and air purification. + =

  22. FRESH • FAD - FRESH AIR DAMPER CONSTRUCTION One Motor Assembly Fits all sizes 4,6,8,10 Service Switch Plug in 3 wire Harness Red - R White - C Blue - V Flat Shaft Indicates Damper Position Mounting Screws (2) Cotter Pinned Washer Shaft Seal Robust Metal Motor Support Bracket 3 Pre Punched Mounting Holes Pre Crimped Pipe Edge Direction of Flow Stainless Steel Tight Rubber Seal Brass Bearing Surface Long Life Motor Assembly Power Open – Power Closed 24 VAC / 3 Watt / 80 Milli-Amps

  23. FRESH ASHRAE 62.2 Whole House Constant Flow Ventilation Requirements New & Existing Homes: 7.5 CFM per Bedroom + 1 & 1 CFM per 100 sq. ft. Note: (+ 1 figures 2 people in the master bedroom)

  24. FRESH • How many CFM are required for ventilation? • ASHRAE 62.2 • Need to know! • Square feet of conditioned floor space includes basement • 1 CFM per 100 sq. ft. of conditioned floor space • Number of bedrooms • 7.5 CFM per Bedroom + 1 • Plus 1 ASHRAE figures 2 people for the master bedroom

  25. FRESH • How many CFM are required for ventilation? • ASHRAE 62.2 • Example: • 1500 square foot home • 2 bedrooms • Engineer system for full CFM delivery • Adjustments can be made by modifying the HHSC program • Over sized - add a manual damper for adjustment

  26. FRESH How many CFM are required for ventilation? ASHRAE 62.2 Step 1   1500 square foot conditioned floor space x .01 sq. ft home multiplier (1 CFM per 100 sq. ft.) 15 CFM (cubic feet per minute) Step 2 7.5 CFM per bedroom Plus 1 or 7.5 CFM per occupant if known x 2 Bedrooms 15 CFM + 7.5 CFM Plus (1) Figures 2 people in master bedroom 22.5 CFM Step 3 15 CFM Step 1 + 22.5 CFMStep 2 37.5 CFM Constant 24/7

  27. FRESH • FRESH AIR SIZING • 37.5 CFM Constant Ventilation (1500 sq ft 2 bedroom home) • 37.5 CFM X 3 = 112.5 CFM (1 hour) 60 minutes ÷ 3 = 20 minutes • HHS Control regulates volume controlling damper & appliance fan • Two cycles per hour Fresh Air Damper open 10 minutes per ½ hour

  28. FRESH • FRESH AIR SIZING • Two cycles per hour Fresh Air Damper open 10 minutes per ½ hour • 112.5 CFM for 20 minutes same as 37.5 CFM per hour constant • Size Fresh Air System for ventilationto deliver112.5 CFM • Combustion and makeup air are handled separately

  29. FRESH IMPORTANT • Intake Air Hood Size metal not plastic ¼ hardware cloth • Intake Pipe Size • Intake Pipe Length • Recommend Smooth Sheet Metal Pipe • Intake to return air plenum duct connection location

  30. FRESH • Calculate equivalent feet of intake air pipe • Determine total equivalent feet by each type of fitting used in connecting the outside intake air hood to the return air duct plenum. See reference table below. • Determine total equivalent feet for lengths of straight pipe • Equivalent feet of fittings plus equivalent feet of straight pipe • equals total equivalent

  31. FRESH EXAMPLE: Outside Intake Air Pipe Size 6 inch Step 1 2 - 90° Elbows (6 inch) = 22 equivalent feet Step 2 2 - 5 Ft. lengths of 6 inch pipe = 10 equivalent feet (Smooth straight pipe 1 foot = 1 equivalent foot) Step 3 Step 1 + Step 2 = Step 3 22 equiv. ft. + 10 equiv. ft. = 32 Total equivalent feet

  32. FRESH • FRESH AIR SYSTEM SIZING • Total equivalent feet, intake air pipe size, intake air hood size, • damper size and return air static pressure determines CFM Intake • Required CFM delivery 112.5 CFM Intermittent(37.5 CFM Constant) • Total Equivalent Feet 32 Equivalent Feet • What’s the return air static pressure at duct to air intake connection? • What’s the design (negative) Return Air Plenum Static Pressure? • What size pipe, intake hood & damper to deliver 112.5 CFM?

  33. FRESH • Determine Return Air Static Pressure • Turn the room thermostat to constant fan on or AC is operating. • 2. Make sure a clean appliance filter is installed • A plugged air filter will change the static pressure measurement • 3. Use a Magnethelic gauge, monometer air flow measurement tool • Instruments must be calibrated to zero for accurate measurements • Take a measurement in the return air plenum where fresh air intake • will be installed. Fresh air intake already installed and attached to • intake air hood and return air plenum. Take the negative static pressure measurement with fan on or AC operating and damper open. Static pressure measurement should be taken in return air plenum near center of intake air pipe. • Note: Operate HVAC appliance fan on high speed

  34. FRESH • Determine Return Air Static Pressure • 5. Record the measurement or take a • few measurements and average • Static pressure measurement will • now determine Fresh Air Damper size • What’s the static pressure? Example: .1 inches WC is common • Total equivalent feet, required / delivered CFM ventilation and • negative return air static pressure will determine duct size for • intake air hood, connecting pipe and fresh air damper. • 9. For best results connect intake air at return air plenum • 10. Make sure air is filtered before entering the appliance fan

  35. Determining Static Pressure Installation Information

  36. Determining Static Pressure Installation Information

  37. Determining Static Pressure Installation Information

  38. FRESH FAD 4 - AIR FLOW SIZING CHARTS

  39. FRESH FAD - 6 AIR FLOW SIZING

  40. FRESH FAD - 8 AIR FLOW SIZING

  41. FRESH FAD - 10 AIR FLOW SIZING

  42. FRESH

  43. FRESH • Deliver 112.5 CFM Intermittent • FC Products • FAS-1 Fresh Air System • HHSC - Health Home System Control • FAD - Fresh Air Damper (6 inch) • IAH 6 inch Intake Air Hood • Intake air hood purchased separately + = HHSC FAD Whole House FAS

  44. FRESH • Product Information • HHSC Healthy Home System Control • FAD – 4 4 inch Fresh Air Damper • FAD – 6 6 inch Fresh Air Damper • FAD – 8 8 inch Fresh Air Damper • FAD – 10 10 inch Fresh Air Damper • IAH Intake Air Hood + = HHSC FAD Whole House FAS

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