Product Release Summary 48/50HC with System March 2012 TC
Benefits of EnergyX System Why Energy Recovery 1. Code requirements: ASHRAE 90.1-2004: Energy Recovery is required when design supply air capacity is >5000 CFM & have 70% OA. ASHRAE 90.1-2010: Significantly increases the application ranges where Energy Recovery is required. 2. Energy efficiency: System efficiencies as high as 18+ CEF (AHRI Guideline-V) 3. Utility Rebates 4. Expand the application range of base rooftop unit: Provide extra cooling, dehumidification & heating capacity OR Downsize base unit by using the ERV to pre-conditioning the ventilation air OR Allow the base unit to handle more ventilation airflow (and still meet design capacity & Leaving Air Temp requirements) 2
EnergyX System One Solid Line - Up WeatherMaster 48HC 3 25 Ton WeatherMaster 50HC 3 25 Ton Ton Size 3 4 5 6 7.5 8.5 10 12.5 15 (17 size) 17.5 20 25 ERV Only ERV with Enthalpy Econo ERV with Frost Protection ERV with Enthalpy Econo and Frost Protection - Available on 208/230/3/60, 460/3/60 and 575/3/60 models l - Not available on single phase 208/230/1/60 models - Not available on 50HCQ Heat Pumps These Sizes Released November 2011 3
EnergyX System Features Energy (enthalpy) wheel that pre-cools, dehumidifies or pre-heats ventilation air prior to entering the evaporator coil. Energy Recovery system is rated and certified in accordance with AHRI Standard 1060-2000. Helps reduce cooling load at design temperature up to 4 tons per 1000 cfm of outside air. Helps reduce heating load at design temperature up to 2.5 tons per 1000 cfm of outside air. 4
EnergyX System Features (cont) One single integrated HVAC comfort system that: Integrates controls for mechanical cooling, heating, ventilation and Energy Recovery Ventilation system. Provides the ability to have single source power supply and connection Provides a single piece for equipment for one time rigging and lifting at the job site Reduces the dual source logistic and technical issues common with separate field installation Pre engineered, assembled and tested at the factory prior to shipment. 5
EnergyX System Features (cont) Combined Efficiency Factor (CEF) up to 18.0+ ComfortLink controls Vertical duct air flow from factory field horizontal air flow adapter curb available Outside air and exhaust air cfm monitoring and display capabilities Variable speed energy recovery fans for Demand Control Ventilation (DCV) Uses standard roofcurbs no support rails or on site fabricated extensions True, wheel-bypass economizer option (factory installed only) 6
EnergyX System Overview 48/50HC - Rooftop Unit Modulating OA Dampers Indoor Fan RTU Heating Section Evapo rator Mixed Air = RA2 + Outdoor Air Pre-cooled, dehumidified and/or heated Ventilation Air ERV module Enthalpy wheel Outdoor Air Exhaust Air Supply Air Return Air / Exhaust Air Diverter Dampers RA2 RA1 Return Duct Replaceable Filters Airflow Sensing Module Unit Airflow (rear view) 7
EnergyX System Ease Of Set Up Enter: Commanded Exhaust Commanded Intake System: Modulating fans Intake damper Onboard airflow monitoring System works to balance actual and commanded Factory integrated system and controls Applies to EnergyX modulating CFM units only. 8
EnergyX System Ease Of Maintenance Easy access hinged door Filters slide out Energy Wheel slides out: Easy cleaning Sectional pie design 9
EnergyX System Onboard Airflow Monitoring Differential pressure sensed across window opening Correlation between differential pressure and CFM Intake/exhaust fans modulate: - Backward curved - Direct drive ECM motors Drive Actual CFM = Commanded CFM *Aluminum mist filter removed for photo Applies to EnergyX modulating CFM units only. 10
EnergyX System Integrated Controls CLv5 Outside Air Unit Points 48/50HC and ERV integrated control system ComfortLink controls. All ERV configuration, setup and troubleshooting is done via ComfortLink controls. Modulating OA ventilation damper New Outside Air Unit points table New control functions for accessory devices: Exhaust fan building pressure control Open protocol integration ti solutions available OAU table applies to EnergyX modulating CFM units only; OAU System Run State OAU Operating Mode UPC Software Version OA Unit Software Version OAU 2-position Exhaust Damper * OAU Wheel Speed OAU Leaving Air Temp OAU Exhaust Air Temp Minimum Outside Air CFM Min DCV Outside Air CFM OA Ventilation Damper Position Actual Outside Air CFM Command Outside Air CFM Power Exhaust CFM Offset OAU Exhaust Fan Speed Actual Exhaust Air CFM Command Exhaust Air CFM Building Pressure Set-point * Building Pressure * OA Tempering Lockout Temp * OA Tempering SAT Set-point * OAU Tempering Heater * * Optional device 11
EnergyX System Ease Of Selection Carrier s RTUBuilder FIOP selection: EnergyX RTU airflow Building return/exhaust airflow and design conditions ERV ventilation airflow and design conditions 12
EnergyX System Ease Of Selection (cont) Combined Efficiency (CEF) Combined Heating Capacity Combined Cooling Capacity One Integrated Location 13
EnergyX System Field Installed Accessories Horizontal roofcurb adaptors used when horizontal supply and/or return is required Motor status indicator accessory monitors wheel, supply & exhaust motors and provides indication if not operating Filter status indicator accessory monitors static pressure across supply & exhaust filters and provides indication when filters become clogged 14
EnergyX System 15
ENERGYX ENERGY RECOVERY Airxchange Wheel Assembly Airxchange Energy Recovery Cassette: UL certified, AHRI listed, silica gel enthalpy desiccant, wheels > 25 diameter are segmented for easy cleaning, washable with detergent and water, 5 year std warranty Operation: Energy recovery wheels rotate between the incoming outdoor airstream and the building exhaust airstream. As the wheel rotates, it transfers heat and moisture from one airstream to the other. Result = outdoor air is pre-conditioned, significantly reducing the capacity and energy needed from the mechanical HVAC system. TYPICAL SUMMER CONDITIONS TYPICAL WINTER CONDITIONS 16
Benefits Of EnergyX System Why Energy Recovery 1. Code requirements: ASHRAE 90.1-2004: Energy Recovery is required when design supply air capacity is >5000 CFM & have 70% OA. ASHRAE 90.1-2010: Significantly increases the application ranges where Energy Recovery is required. 2. Energy efficiency: System efficiencies as high as 18+ CEF (AHRI Guideline-V) 3. Utility Rebates 4. Expand the application i range of base rooftop unit: i Provide extra cooling, dehumidification & heating capacity OR Downsize base unit by using the ERV to pre-conditioning i the ventilation air OR Allow the base unit to handle more ventilation airflow (and still meet design capacity & Leaving Air Temp requirements) 17
ASHRAE CLIMATE ZONES ASHRAE 90 90.1-2010 1-2010 uses climate zones for energy recovery requirements 18
ASHRAE 90.1-2010 Section 6 Addendum e Revises the requirements for energy recovery and extends them to a broader range of applications. Requirement is based on % outdoor air and supply CFM and dis region specific. If outdoor air and supply air meet the requirements, energy recovery is required. CLIMATE ZONE Examples: 7.5 ton unit, 3000 CFM: 60% or more OA 10 ton unit, 4000 CFM: 50% or more OA 15 ton unit, 6000 CFM: 30% or more OA Note: 90.1-2004 standard used a single value of total airflow >5000 CFM & 70% OA. 19
TYPICAL BUILDING REQUIREMENTS Outdoor Air - Ventilation Typical outside air requirements that are MANDATORY Building % OA for a building designed to meet ASHRAE 90.1-2010 and Primary School 75 ASHRAE 62.1-2010. Secondary School 69 Exact values will change based on the occupancy and space design. Retail 65 The energy recovery will impact building designs that Strip Mall 62 need ~25% outdoor air or more. Hospital 54 These applications cover ~ 75% of the industry Outpatient Care 50 applications for light commercial rooftop units. Small Office 46 Restaurant 36 Use of energy recovery reduces compliance complexity Fast Food 34 for designing engineers! Large Office 32 Medium Office 27 ASHRAE 189 requires energy recovery on applications with more than ~ 5% outside air. Warehouse 26 Hotel 23 7.5 ton unit, 3000 CFM: 60% or more OA Grocery 21 10 ton unit, 4000 CFM: 50% or more OA Motel 20 15 ton unit, 6000 CFM: 30% or more OA 20
EnergyX System Efficiency Ratings Energy Recovery Ventilators (ERV) use AHRI Guideline-V to provide a total system energy efficiency value: EER = net cooling capacity / total input kw (RTU EER) & (ERV EER) = System EER = Combined Efficiency Factor (CEF) ERV - EER is calculated differently than RTU EER: AHRI Rooftop Unit EER rating specifies static pressure, ambient & evaporator temp values. Does not specify use of Outdoor Air ERV s use outdoor air (pre-conditioned by return air) ERV s use fans & no compressor = highly efficient Reference: www.ahrinet.org/content/findaguideline_240.aspx 21
AHRI GUIDELINE-V Combined Efficiency Factor (CEF) RTU Energy Efficiency Ratio ERV Recovered Energy Efficiency Ratio EER Net conditioning capacity of RTU Total electric power by RTU RER Net conditioning recovered by ERV Total electrical power consumed by ERV EER RER CEF = Combined Efficiency Factor (system EER) Reference: www.ahrinet.org/content/findaguideline_240.aspx 22
EnergyX System CEF Examples (3-12.5 Ton) * CEF equates to a system EER value In example cities systems experience up to 8.40 efficiency point boost, with an average increase of 4.5 points of efficiency! 23
EnergyX System CEF Examples (15 25 Ton) Rooftop Unit RTU AHRI EER ERV Wheel RTU Airflow (CFM) ERV Airflow (CFM) Atlanta Miami Phoenix Montreal Detroit ERV RER 48HC 17 12.0 ERC-3628 5250 3800 68.6767 16.6060 80.8282 17.59 61.82 16.05 43.08 14.52 55.5858 15.5454 48HC 20 12.0 ERC-3628 5950 3800 68.67 16.01 80.82 16.87 61.82 15.52 43.08 14.20 55.58 15.08 48HC 24 12.0 ERC-4646C 7000 5500 76.27 17.19 89.95 18.29 68.73 16.58 47.97 14.90 61.80 16.02 48HC 28 11.2 ERC-4646C 8750 5500 76.27 15.38 89.95 16.25 68.73 14.89 47.97 13.56 61.80 14.45 CEF ERV RER CEF ERV RER CEF ERV RER CEF ERV RER CEF Atlantat Miamii Phoenix Montreal Detroit Rooftop Unit RTU AHRI EER ERV Wheel RTU Airflow (CFM) ERV Airflow (CFM) ERV RER CEF ERV RER CEF ERV RER CEF ERV RER CEF ERV RER CEF 50HC 17 12.2 ERC-3628 5250 3800 68.67 16.86 80.82 17.86 61.82 16.29 43.08 14.75 55.58 15.78 50HC 20 12.2 ERC-3628 5950 3800 68.67 16.26 80.82 17.13 61.82 15.76 43.08 14.42 55.58 15.32 50HC 24 12.2 ERC-4646C 7000 5500 76.27 17.45 89.95 18.57 68.73 16.83 47.97 15.13 61.80 16.27 50HC 28 11.4 ERC-4646C 8750 5500 76.27 15.63 89.95 16.53 68.73 15.14 47.97 13.79 61.80 14.69 * CEF equates to a system EER value In example cities systems experience up to 6.37 efficiency point boost, with an average increase of 4 points of efficiency! 24
EnergyX System Rebate Opportunities www.airxchange.com/airxchange-technology-utility-rebates.htm Utility Rebates for Energy Recovery Ventilators Electric and Gas Utilities Recognize the Benefits of Energy Recovery Ventilation Many electric and gas utilities offer generous rebate programs in order to encourage the use of energy recovery ventilation (ERV). The reduction in peak load as well as ongoing operating savings combines to help utilities achieve their mandate in encouraging use of energy efficient equipment. ERV qualifies for custom rebate programs that are offered by most utilities. Usually, the local utility representative administers the program and will assist customers with the qualification process. Link to DSIRE website www.dsireusa.org/ 25