1. ERMS- Energy Recovery Module

2. The module uses an Air Exchange ERC energy recovery wheel to recovery waste heat/cooling from the exhaust air stream and transfer it into the supply air stream.

3. * Desiccant energy recovery wheel * Wheel shall be constructed of a light weight polymer * Individual removable “Pie” wheel segment * Both the supply and exhaust air are filtered prior to entering the wheel.

4. * Synthetic Parallel Plate * Metal Tube Type

5. Rotary Air-to-Air Heat Exchange: 75% Intake 7 o F/6 WB Return 72 o F/54 WB Supply 56 o F/45 WB Exhaust 22 o F/20 WB 273,773 BTUH load reduction

6. Rotary Air-to-Air Heat Exchange: 75% Intake 91 o F/73 WB Return 75 o F/63 WB Supply 78 o F/65WB Exhaust 87 o F/71 WB 8.94 Tons of load reduction

7. * Rugged G90 frame * Stainless wheel and hub * Permanently lubed bearings – 30 year life minimum! * Removable matrix segments * No Drain Pan requirement * Desiccant permanently imbedded in matrix * Urethane stretch belt * Fractional hp motor * 5 YEAR WARRANTY

8. * Constructed of galvanized steel coated with pre-painted baked enamel finish * 1”, 2lb. density insulation * Belt drive centrifugal blower wheel for supply and exhaust fan. * Outside air and exhaust air dampers * Tool-less cabinet entry * 24 volt control transformer

10. * Energy Recovery Wheel Purge * Double Wall * Variable Frequency Drive * Stop/Jog Control * Indicator Switches * Filter Maintenance indicator switch * Energy Recovery Wheel Maintenance Indicator switch * Blower Maintenance indicator switch * Roof Curb Extension

11. * Low temperature lockout * On/Off Frost Control * Electric pre-heat frost protection.

12. 1. Plot indoor (1) and outdoor(3) design. 2. Draw indoor tangent to saturation. 3. Draw pre-heat process line which crosses 80% RH at control setpoint (-2.2 O F). 4. Lines (4) cross at pre-heat temperature. 5. Capacity is OA to pre-heat delta (8.4F). 6. Objective is to move the process line away from the saturation curve

13. Reasons to get an ERMS * Can down sizes mechanical heating and cooling. * Reduced building operation cost. * Utility rebates * New ASHRAE 90.1-2010

14. REBATE from Air Xchange website * http://www.airxchange.com/airxchange-technology- utility-rebates.htm http://www.airxchange.com/airxchange-technology- utility-rebates.htm

15. NEW ENERGY RECOVERY VENTILATION REQUIREMENTS Based on DOE Climate Zone Cost Justified by Zone Broadened Building Applications Previously ≥5000cfm Supply and ≥ 70% Outdoor Air – all Zones Previous 90.1 2004 / 2007 Requirements Outlined in Red

16. Still not sure? There is an online estimator to help you ballpark energy savings

17. * The ERMS unit is designed to connect directly to the Sterling PV/RT/AH unit without the need for additional transitions or field modification * See IOM for full installation instructions * ERMS will require a separate power supply.

18. 1. By hand, turn wheel clockwise (as viewed from the pulley side), to verify wheel turns freely through 360º rotation. 2. Before applying power to drive motor, confirm wheel segments are fully engaged in wheel 3. With hands and objects away from moving parts, activate unit and confirm wheel rotation. Wheel rotates clockwise (as viewed from the pulley side). 4.) Cassettes ship from the factory with the seals fully back. To adjust the diameter seals, loosen diameter seal adjusting Screws. Using a folded piece of paper as a feeler gauge, position paper between the wheel surface and diameter seals. Adjust seals towards wheel surface until a slight friction on the feeler gauge (paper) is detected when gauge is moved along the length of the spoke. Retighten adjusting screws and recheck clearance with “feeler” gauge. 5. Start and stop wheel several times to confirm seal adjustment and to confirm belt is tracking properly on wheel rim (approximately 1/4” from outer edge of rim).

19. Purge Adjustment If the cassette has a purge you Would use the same adjustment strategy As a normal diameter seal To determine proper purge angle setting Please refer to the AIRX Software.

20. * Wheels are self cleaning from Dry Dust and Dirt – laminar flow. * If VOC’s present, Wheels need to be ‘deep’ cleaned just like evap coils to maintain latent recovery performance. * It is easier and less risky to clean a wheel outside of the HVAC unit than within.

21. * Wheel is accessed and segment is removed. * Segment is soaked in alkaline cleaner. * Segment is rinsed and drained. * Segment is dried and ready for use.

22. * Airxchange studies of units operating in the field for up to 20 years show the following: * In the ‘smoking years’ wheels needed annual cleaning in all but school applications. * Today, wheels only need to be cleaned every 5-6 years due to environmental air pollution except: * Casinos * Bars/Restaurants * Dry Cleaning/Hair salons * Manufacturing