1. Trouble-Free ERV for over 20 years!

2. Trouble-Free ERV Energy Recovery Ventilation for School Applications

3. Trouble-Free ERV What is an Energy Recovery Ventilator (ERV) An air-to-air heat exchanger that… … recovers energy from both heat and humidity.

4. Trouble-Free ERV How Does ERV Work?

5. Trouble-Free ERV Cold Dry Warm Humid Heating Season Conventional Ventilation

6. Trouble-Free ERV Cold Dry Warm Humid Heating Season Energy Recovery Ventilation ERV Less Warm Less Humid Less Dry Less Cold

7. Trouble-Free ERV Hot Humid Cool Dry Cooling Season Conventional Ventilation

8. Trouble-Free ERV Hot Humid Cool Dry Cooling Season Energy Recovery Ventilation ERV Less Cool Less Dry Less Hot Less Humid

9. Trouble-Free ERV What ERV technologies are approved for Ohio schools?

10. Trouble-Free ERV

12. What is an “Energy Recovery Module?”

13. Trouble-Free ERV RenewAire Static-Plate Technology EV450 Blowers Cross-flow Exchange Core

14. Trouble-Free ERV Kuala Lumpur Point Barrow Developed & Patented 1970’s First U.S. installations 1980 Integrated in systems featuring prominent HVAC brands: Trane Carrier York McQuay World-Wide Acceptance

15. Trouble-Free ERV The Core is the Key! Transfers heat by conduction. Transfers humidity through vapor pressure differential.

16. Trouble-Free ERV EXHAUST FRESH AIR Lower Humidity Higher Humidity H 2 O Migration Hydroscopic Resin Medium

17. Trouble-Free ERV EXHAUST FRESH AIR Higher Humidity Lower Humidity H 2 O Migration Either Way = No liquid water No freezing Hydroscopic Resin Medium

18. Trouble-Free ERV Think of a magnet… Zn Fe Zn Fe Fe Pb Fe Cu Cu Fe Pb Fe Fe Zn Fe Pb Pb Fe Cu Fe Fe Cu Fe Zn Zn Fe Pb Fe Fe Pb Fe Cu Cu Fe Zn Fe Fe Zn Fe Pb Cu Zn Pb Fe Fe Fe Fe Fe Fe Fe Fe Fe Fe Zn Fe Zn Fe Fe Pb Fe Cu Cu Fe Pb Fe Fe Zn Fe Pb Pb Fe Cu Fe Fe Cu Fe Zn Zn Fe Pb Fe Fe Pb Fe Cu Cu Fe Zn Fe Fe Zn Fe Pb Cu Zn Pb Fe

19. Trouble-Free ERV O 2 H 2 O N H 2 O H 2 O Co H 2 O Co N H 2 O Co 2 H 2 O NH 3 N H 2 O N Co 2 H 2 O N H 2 O H 2 O N H 2 O N Co H 2 O N H 2 O H 2 O N H 2 O Co N H 2 O Co 2 H 2 O H 2 O O 2 H 2 O NH 3 Co 2 H 2 O H 2 O H 2 O H 2 O H 2 O H 2 O H 2 O H 2 O H 2 O O 2 H 2 O N H 2 O H 2 O Co H 2 O Co N H 2 O Co 2 H 2 O NH 3 N H 2 O N Co 2 H 2 O N H 2 O H 2 O N H 2 O N Co H 2 O N H 2 O H 2 O N H 2 O Co N H 2 O Co 2 H 2 O H 2 O O 2 H 2 O NH 3 Co 2 …for water vapor! Hydroscopic Resin Medium

20. Trouble-Free ERV Why is RenewAire preferred over wheel products? Capital Savings Operational Savings Reliability Design Flexibility

21. Trouble-Free ERV Diameter Seal Blowers, Motors Desiccant Material The Problem With Wheels Circumference Seal Air Leakage High Maintenance Reliability Issues

22. Trouble-Free ERV Lost Air Effects Micrometl ERV-AA Rated Airflow = 500CFM Outdoor Air Fresh Air Supply Exhaust Air Room Air PURGE AIR (10 CFM ) Media Rotation 500 CFM Wheel Cross Section 510 CFM 500 CFM Pressure = -0.5 Exhaust Air Transfer = 9.9% OACF = 1.02

23. Trouble-Free ERV Lost Air Effects Micrometl ERV-AA Rated Airflow = 500CFM Outdoor Air Fresh Air Supply Exhaust Air Room Air PURGE AIR (165 CFM ) Media Rotation 500 CFM Wheel Cross Section 665 CFM 500 CFM Pressure = 0.00 Exhaust Air Transfer = 0.2% OACF = 1.33

24. Trouble-Free ERV Lost Air Effects Micrometl ERV-AA Rated Airflow = 500CFM Outdoor Air Fresh Air Supply Exhaust Air Room Air PURGE AIR (295 CFM ) Media Rotation 500 CFM Wheel Cross Section 795 CFM 500 CFM Pressure = +0.5 Exhaust Air Transfer = 0.0% OACF = 1.59

25. Trouble-Free ERV “Lost Air” is Significant in Wheels  Small wheels 15-30% and still some exhaust air transfer  Small wheels over 50% to achieve 0.0 exhaust air transfer  Large wheels typically 10-20%

26. Trouble-Free ERV Lost Air Effects RenewAire EV450 Rated Airflow = 450 CFM Outdoor Air Exhaust Air Fresh Air Supply 450 CFM 459 CFM Room Air 450 CFM Pressure = 0.0 Exhaust Air Transfer = 0.0% OACF = 1.02

27. Trouble-Free ERV Wheel Performance - A Delicate Balance Low Efficiency Low Cross ContaminationHigh Efficiency High Cross Contamination Ventilation System Design Low Efficiency Low Cross ContaminationHigh Efficiency High Cross Contamination Ventilation System Design

28. Trouble-Free ERV Minimum Purge Air Losses = No Overbuilding of System Low Cross Contamination High Efficiency Ventilation System Design = Capital Savings

29. Trouble-Free ERV Routine Wheel Maintenance 1. Remove wheel module 2. Disassemble module 3. Recondition exchange medium 4. Adjust/replace seals 5. Adjust/replace belts or drive 6. Reassemble module 7. True wheel 8. Replace module

30. Trouble-Free ERV Wheel Maintenance Cost 2.5 hours – 8.5 hours x $70/hour (Madison, WI) $175 - $595 x 2/year $350 - $1190 per wheel!

31. Trouble-Free ERV Maintenance Downtime  Wheel stops: no energy recovery  Air-X-Change has recommended buying a replacement wheel with each unit to switch out for maintenance

32. Trouble-Free ERV Without Regular, Professional Service System Failure : 100% outside air!

33. Trouble-Free ERV RenewAire Maintenance

34. Trouble-Free ERV vs. Laminar Flow Turbulent Flow  Straight Air Passages Laminar Flow  Typical Velocity 200 - 500 ft./ min.  Static pressure loss 0.3 – 1.3 inch RenewAire Technology

35. Trouble-Free ERV Does the RenewAire core foul with particulate? Particulate mats on the low velocity entering faces of the core.

36. Trouble-Free ERV Air passages have no particulate accumulation

37. Trouble-Free ERV After vacuum cleaning with soft brush – airflow is fully restored

38. Trouble-Free ERV Easy Maintenance: 15 minutes @ janitorial staff hourly rate = operational savings

39. Trouble-Free ERV Reliability Core Warranty No failure No degradation in performance

40. Trouble-Free ERV RenewAire Allows Heating Equipment Downsizing (per 1000 cfm at 0º design condition) Load imposed by OA = 150,000 BTU/hour Load imposed by RenewAire = 56,000 BTU/hour Savings with RenewAire = 94,000 BTU/hour

41. Trouble-Free ERV RenewAire Allows Cooling Equipment Downsizing

42. Trouble-Free ERV How can RenewAire be Applied? Distributed air schematic Rooftop Tied to central air handler

43. Trouble-Free ERV Twenty-seven EV450 units above suspended ceiling Yellow Medicine East High School, MN Distributed Air Application

44. Trouble-Free ERV Integrated ERV/Fan Coil in School Classroom (Available 277VAC option)

45. Trouble-Free ERV HE2X900V with Packaged Fan Coil

46. Trouble-Free ERV Integrated ERV/VAV box in School Classroom (Available 277VAC option)

47. Trouble-Free ERV Rooftop Application Ballentine Elementary School Irmo, South Carolina Fourteen RTEC ERVs tied into Carrier and ICP roof top units

48. Trouble-Free ERV End - connect or stand - alone 450 cfm – 8000 cfm Rooftop Application HE2X900RTV

49. Trouble-Free ERV Applied Products Assembly of RenewAire cores in insulated cabinets Centralized Systems 500 CFM to 50,000 + CFM

50. Trouble-Free ERV Cabinet - “C” Series - ERV Installed in Air Handling System RenewAire

51. Trouble-Free ERV Cabinet - “C” Series Installation

52. Trouble-Free ERV What makes RenewAire your best choice for school projects? Design flexibility ARI Certified performance 0% exhaust air transfer Lowest maintenance cost Best warranty Award-winning customer service Aggressive pricing

53. Trouble-Free ERV We’ll Show You How. Ready to Leave the Wheels Behind?