Construction Fabrication Service
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1 Construction Fabrication Service
2 VRF vs Heat Pump Chicago VRF Design & Installation Considerations
3 Presentation Overview o Premier Mechanical Background o VRF Project Resume o 2211 N Milwaukee Case Study o Design Considerations for VRF o Installation Considerations for VRF
4 Company History o Founded in 1994 o MEP BIM 400 & 500 Levels o Drawing in 3D Since 1998 o 2 In-House PE s o Markets o High Rise, Tenant Buildout, Health Care, Laboratory, Design Build, Education, Industrial VRF Condensers Boiler & Chillers Serving Chilled Beams
5 VRF Resume o First VRF Job 2008 o Certified Installers Of: o 5 VRF Manufacturers o Over 1000 Tons of VRF o Over 700 VRF Evaporators
6 VRF Projects Project Market VRF Type Illinois Valley Community College Institutional Geothermal Water Source Heat Pump VRF System Autumn Green Animal Hospital Commercial Design Build - Geothermal Water Source Heat Pump VRF VA Hospital North Chicago Bldg 4 Hospital Air Cooled VRF O Plaine Middle School - Gurnee IL School Air Cooled VRF RML Hospital Hospital Air Cooled VRF Thornton Fractional North High School School Air Cooled VRF Thornton Technical Academy School Air Cooled VRF Deerfield Public Library Institutional Air Cooled VRF 2211 North Milwaukee Residential Air Cooled VRF
7 2211 North Milwaukee Ave Case Study Air Cooled VRF Heat Pump Vs. Water Cooled Heat Pump
8 2211 North Milwaukee Ave Case Study Air Cooled VRF Heat Pump Vs. Water Cooled Heat Pump Building Summary VRF Design Summary 6 Story Apartment Building 2 MAU Gas Fired, 10,000CFM Each 1st Floor Parking & Commercial 2nd - 6th Apartments 16 VRF Condensing Units 160 Vertical VRF Evaporators 144,000 Sq Ft 16 Horizontal Ducted VRF Evaporators in Common Areas on 1st Floor 120 Apartments 17 Zones
9 2211 North Milwaukee - Upfront Cost Analysis Cost Breakdown Air Cooled VRF Vertical Stacked HPs Equipment $543, $615, Ventilation $400, $400, Temperature Controls $103, $65, Piping Material $88, $175, Piping Labor $383, $407, Cost/SqFt $13.95/SqFt $14.96/SqFt Total Cost $2,010, $2,155,000.00
10 2211 North Milwaukee Ave - Electrical Amp Comparison Floor Air Cooled VRF HP Water Cooled HP 2nd Floor rd Floor th Floor th Floor th Floor Mechanical Equipment Total Amps % Decrease in AMP Requirements
11 VRF Design Considerations from a Contractors Prospective Heat Pump or Heat Recovery Low Ambient High Rise Temperature Controls Intelligent Zoning Code Issues VRF Wall Mounted Evaporator
12 VRF Heat Pump VS Heat Recovery VRF Heat Pump Lower First Cost Single Mode Operation VRF Heat Recovery Higher First Cost Simultaneous Heat & Cool
13 Low Ambient Heating Capacity on VRF MAU (Discharge Air Reset) Supplemental Heat Water Cooled/Geothermal VRF Sizing of VRF Condensing Unit Condensing Unit Location VRF Air Cooled Ducted Condensing Unit Maintenance Access Use of Existing Gas Unit Heaters
14 High Rise Considerations Building Height Manufacturer Line Length Refrigerant Codes Air Cooled 10 Story Range Mech. Equipment Space
15 Temperature Controls & Intelligent Zoning
16 VRF Code Issues City of Chicago Code - No Flared or Mechanical Connections City of Chicago Code - Firemen's Dump Valve Circuits Exceeding 100# City of Chicago Code - Relief Valves Required Greater than 30# ASHRAE 15 - Maximum Refrigerant 26lbs/1000ft3 (R410a)
17 VRF Installation Considerations Certified Installers Hard Pipe vs Line Set Manufacturer Practices Flaring VRF Component Protection 2211 N Milwaukee - BIM Model
18 Manufacturer Certified Installers VRF is Not a Residential Split System Certification Installation Commissioning Service Manufacturers Participation Before Install, During Install, Startup Examples of Poor Installations
19 Hard Pipe vs Line Set Line Set Considerations: Kinking of Smaller Diameter Less Joints More Hangers Hard Pipe Considerations: Increased Insulation Cost Cleaner Install Insulation Considerations: EPDM Insulation Required VRF Operating Temps Vapor Barriers Pipe Hangers
20 Varying Manufacturer Requirements Commissioning Pressure Testing Pressure & Duration Evacuation Double or Triple Pull-Down Micron Level & Duration Control Wiring Shielded vs Non-Shielded Cable Service/Isolation Valve Refrigerant Tees Manufacturer or Field Provided Inlet/Outlet Distance Restrictions Line Lengths 2 & 3 Pipe Layout Others?
21 Flaring R410a vs R22 Flare Chicago Code
22 VRF Component Protection Nitrogen Purge Heat Protection
23 Summary Evaluate Building Heights 10 to 12 Stories Mechanical Space Locations Design Considerations Condenser Location Intelligent Zoning Installation Considerations Certified Installers Manufacturer Variations
24 Questions? Contact: Andy Hubner
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