STULZ

1. STULZ Solutions and Services (2nd Edition) STULZ mission is to be the premier provider of energy efficient temperature and humidity control solutions for mission critical applications. Outdoor Cooling Indoor Cooling Retrofit and Conditioning

2. STULZ, Your Trusted Partner Cooling Technology Leader -Precision cooling solutions and services for mission critical applications. -Energy efficient temperature and humidity control equipment for data centers. STULZ is a global provider of innovative data center cooling solutions and services. Pre-Engineered -Variety of configurations and options. -Factory designed and tested components. -Custom touch to meet your specific needs. Breadth and Depth -20 years of expertise including controls & economizers. -Largest portfolio to fill all needs. Designed and Manufactured in the U.S.A. -Research, design, manufacture, and test in Frederick, MD. -Meets the requirements ofBuy America Act

3. STULZ, Your Trusted Partner STULZ can be found in most of the world’s leading data centers. STULZ works closely with leading companies of all sizes to provide you with a complete data center cooling solution. Partners • Partnerships with Rack, Containment, DCIM, and Cooling Tower Experts Contractors • General & Mechanical • High Value • Competitive Lead Times • Controls Support • Start-up Service Owners/Users • High Quality & Reliability • Low Maintenance • After Sales Service • Fast ROI Consulting Engineers • Most Extensive Cooling Line • Unit Selection Support • Energy Analysis • Electrical & Mechanical Drawings • Custom Designs

4. STULZ Mission Critical Cooling Solutions

5. STULZ Mission Critical Cooling Solutions Energy Efficiency Energy efficient temperature and humidity control products and solutions for mission critical applications. Largest sensible cooling capacity per ft2. Qualify for energy rebates. Save money. ASHRAE Active participant on ASHRAE • ASHRAE TC9.9 - 2011 data center temperature & RH • ASHRAE 90.1 - 2010/2013 use of water and air economizers • ASHRAE 127 test standard Achieve industry best SCOP and PUE performances. Testing & Certifications • STULZ Mission Energy Lab • ETL Satellite laboratory for ASHRAE 127 testing • Research, Development and 3rd party witness testing • IBC / OSHPD approved • CEC (California Energy Commission Meet key industry standards. Assure performance as advertised.

6. STULZ Controls and Monitoring STULZE2Microprocessor Controller • STULZ E2is the standard microprocessor controller across all STULZ product platforms • Provides precision monitoring and control of your mission critical environment.

7. STULZ Controls and Monitoring • Control Panel • Backlit LCD alphanumeric display for visual indication • Operated via 6-key menus, in five different modes • Unit functions for cooling, heating, humidifying and dehumidifying • Three levels of restricted entry into the configuration • Microprocessor • Sensor inputs and control outputs • Additional I/O Sensors & Alarms • Psychrometric control provided as user configurable temperature and humidity (RH) or dew point control • Optional UPS backup module Control Panel with Touchscreen Microprocessor

8. STULZ Controls and Monitoring • Software • Independent EC Fan and cooling control (CW valve or DX) • Cooling control options: return air temperature, humidity, supply air temperature, dew point • Fan control sequence: BMS, local/static pressure, or temperature based (supply or return air) • Networking • Capable of networking up to eight E2controllers with an independent LAN. • The E2controller will communicate to BMS/BAS systems via all common protocols: BACnet IP/Ethernet/MS-TP, HTTP, SNMP V1/2c, Modbus IP/RTU Control Panel with Touchscreen Microprocessor

9. STULZ Controls and Monitoring STULZ Advanced Controls Easy to program multiple alarms including “virtual flow” alarm and “condensate possible” alarm Real Time Monitoring -Provides a direct LAN connection for real time status of the EC fans.-Data points available to a BMS for advanced system monitoring. Real time data includes: • Speed • Power • Temperature • Voltage • Alarm Status Multiple Sensor Averaging Control (up to 4 temperature or humidity sensors) • Refrigerant pressure and temp monitoring for DX • Water temp. sensor for CW • Return or supply temp/humidity sensor • Static pressure sensor LAN communication options available Ultra capacitor system can intelligently close valves or dampers after a sudden power loss

10. STULZ Controls and Monitoring STULZE2Microprocessor Controller

11. STULZ Economizers – Controls & Monitoring The STULZ E2Controller monitors and controls all aspects of economizer system operation to economically provide the required cooling, based on real time indoor and outdoor conditions

12. STULZ Air-Side Economizer Air-Side Economizer with STULZ CRAC’s, CRAH’s, or AHU’s and E2 Controls

13. STULZ Air-Side Economizer Vertical & Horizontal Mixing Boxes • STULZ vertical and horizontal mixing boxes for air-side economizer options using STULZ floor-standing CRAC’s or CRAH’s • CRACs or CRAHs with an integrated mixing box and damper controls provide direct free cooling • Units attached to the top of a CRAC or CRAH in a vertical or horizontal position • Pre-filter and freeze protection damper options • Mixes outside and return air depending on outside air conditions • Full economizer controls provided by the STULZ CRAC or CRAH

14. STULZ Air-Side Economizer STULZ CyberHandler (AHU) with Direct Air Economizer, Direct Adiabatic Cooling, and DX for trim • Direct Air-Side Economizer • Outside air (less than supply air temp) is directly introduced into the data center • Direct Adiabatic Cooling • The outside air is cooled with an adiabatic system and directly introduced into the data center • Direct DX Cooling • The outside and/or return air is cooled with a DX evaporator coil and directly introduced into the data center

15. STULZ Air-Side Economizer STULZ CyberCon (Modular/Container) with Direct Air Economizer, Direct Adiabatic Cooling, and DX for trim • Direct Air-Side Economizer • Outside air (less than supply air temp) is directly introduced into the data center • Direct Adiabatic Cooling • The outside air is cooled with an adiabatic system and directly introduced into the data center • Direct DX Cooling • The outside and/or return air is cooled with a DX evaporator coil and directly introduced into the data center

16. STULZ Air-Side Economizer STULZ CyberHandler with Indirect Air Economizer, Indirect Adiabatic Cooling, and DX for trim Indirect Adiabatic Cooling Module • Indirect Air-Side Economizer • Outside Air (less than supply air temp) passes through an air-to-air heat exchanger to indirectly cool the data center return air • Indirect Adiabatic Cooling • The return air is indirectly cooled via an air-to-air heat exchanger that has an adiabatic spray applied to it

17. STULZ Water-Side Economizer Water-Side Economizer with STULZ CRAC’s and E2 Controls

18. STULZ Water-Side Economizer STULZ DX CRAC with Economizer Coil & Condenser Loop • DX CRAC cooling unit with water-side economizer • direct expansion coil • water/glycol economizer coil • Cooled with fluid from the outdoor dry cooler & economizer coil (DX compressors off) • When ambient temperature rises, the flow of fluid is diverted into the DX cooling circuit to provide an assist mode. • When the fluid temperature is warm, the unit operates as a fluid cooled DX unit, rejecting the heat to the condenser.

19. STULZ Water-Side Economizer Variable Economizer Cooling • Variable fan speed dry cooler (with fan speed controlled based on fluid temp) • Variable speed pump (controlled based on fluid temp) • Water/glycol cooled free cooling CRACs (consisting of both a DX and a water/glycol economizer coil)

20. STULZ Water-Side Economizer Evaporative Tower Economizer Cooling • Closed loop evaporative cooling tower (controlled based on fluid temperature) • Constant speed pump • Water/glycol cooled free cooling CRACs (consisting of both a DX and a water/glycol economizer coil)

21. STULZ Water-Side Economizer Water-Side Economizer with STULZ CRAH’s and E2 Controls

22. STULZ Water-Side Economizer Dual-Source Economizer Cooling • Evaporative cooling tower (controlled based on fluid temperature) • Cooling tower pump • Chiller (controlled based on fluid temperature), chiller pump • CRAH unit (with dual circuited interlaced chilled water cooling coil)

23. STULZ Water-Side Economizer STULZ Dynamic Economizer Cooling • The latest STULZ state-of-the-art water-side economizer solution • Evaporative cooling tower and cooling tower pump • Air or water cooled chiller and chiller pumps • Control mixing valves • CW CRAHs (with a single coil) • Optimized Sequence of Operations • Temp near or below required cooling fluid temperature - the “chiller assisted” cooling system operates in cooling tower mode (without energizing the chiller) • Temp increases above required cooling fluid temperature- flow from the tower diverted to the chiller to provide the trim to maintain the cooling fluid temp. • Designed to minimize the hours of chiller operation and optimize economization. • Reference the new STULZ Data Center Design Guide for Water-Side Economizers

24. STULZ Water-Side Economizer STULZ Dynamic Economizer Cooling – Optimized Conditions Achieve incredible efficiency by executing a carefully coordinated sequence of operations, where the functions of all components are orchestrated together. Optimized Delta-T and Approach Temperatures 5⁰F (3⁰C) delta between Supply Water & Supply Air temp 28⁰F (15⁰C) delta between the Supply Air & Return Air temp 25⁰F (14⁰C) delta between the Supply Water & Return Water temp STULZ Controls 75⁰F Supply Air 103⁰F Return Air Closed-Loop Cooling Tower 70⁰F Supply Water 95⁰F Return Water STULZ CRAH Pumps & Valves Air-Cooled Chiller

25. STULZ Water-Side Economizer STULZ Dynamic Economizer Cooling – Optimized Conditions • “CRAH Heat Transfer Efficiency” with STULZ CW V-coil and EC fan technology by increasing the return air temperature to 103F (using containment) • “Warm Water Cooling” withSTULZ CW V-coil that allows the use of 70F supply water to provide 75F supply air (well within ASHRAE TC9.9 guidelines). • “All-Year Primary Economizer Cooling” with a closed-loop cooling tower • “Chiller Assisted Cooling” using an air or water-cooled chiller • “Reduced Flow and High Delta-T” by optimizing use of pumps and valves • Optimized Cooling Performance • Operate in Dry Tower Mode for 62% of the year • Extend Closed-Loop Cooling Tower operation in wet mode another 11% • Operate in Chiller Assist Mode (partial chiller operation to trim cooling tower water) for 27% of the year Contributing to a major data center PUE of 1.14 (partial or mechanical PUE of 1.06)

26. STULZ CyberHandler : Pre-Engineered Air Handler • STULZ CyberHandler • Superior value as a pre-engineered outdoor air handling system for precision temperature and humidity control in a data center • Designed with proven STULZ technology • Frees up white space in the data center

27. STULZ CyberHandler : Pre-Engineered Air Handler • Modular Construction • Pre-engineered modules configured to your needs • Designed for Data Centers • Handles higher return air temperatures than comfort cooling AHUs • Engineered and tested for 7x24 operation • Outdoor placement frees white space • Keeps maintenance away from sensitive IT equipment • STULZ E2controller, available with BMS interface • Galvanized Steel Base • Allows Roof, Pad or Curb Mounting • Sturdy Construction • Excellent Corrosion Protection • Hinged Access Doors • Service access to all sections • Double Wall Panels • Excellent insulation and corrosion resistance • Thermal break • Lightweight • Minimal deflection • EC Fan Array • Highly reliable • Low maintenance • Built in redundancy • Low energy consumption • Variable speed • Direct drive

28. STULZ CyberHandler : Pre-Engineered Air Handler

29. STULZ CyberHandler : Pre-Engineered Air Handler

30. STULZ CyberHandler : Pre-Engineered Air Handler

31. STULZ CyberHandler : Pre-Engineered Air Handler

32. STULZ CyberPack: Packaged Rooftop AHU • STULZ CyberPack • STULZ DX packaged rooftop AHU • DX Cooling • Up to two independent cooling circuits with highly reliable scroll compressors. • Environmentally Friendly R410A refrigerant. • -30 Degrees F ambient operation with optional flooded head pressure control. • Packaged AHU • Functional operations: cooling, dehumidification and filtration • EC Fans for energy cost savings and long life • Fan speed is continuously adjustable • 4” thick, MERV 7-13 cartridge air filters • Controller user interface display panel for ease of use • STULZ E2 Controller and user interface display panel for ease of use

33. STULZ CyberCon : Pre-Engineered Modular STULZ CyberCon Provides superior value for precision temperature and humidity control in a modular/containerized data center (POD).

34. STULZ CyberCon : Pre-Engineered Modular • Designed for modular / containerized data centers • Minimum mechanical installation required - only utilities (power, condensate drain) • No protruding components like fans, doors, or louvers • DX or CW cooling with direct or indirect adiabatic cooling option • STULZ E2controller, available with BMS interface • Standard 20’ high-cube container dimension • Allows IT POD, Pad, or Curb Mounting • Rapid deployment • Easy shipping and handling • Short construction time • Hinged access doors • Service access to all internal components • EC Fan Array • Highly reliable • Low maintenance • Built in redundancy • Low energy consumption • Variable speed • Direct drive • Designed for growth as needed • Outside air intake & service access from one long side • Allows end-to-end, back-to-back installation, and modular build out

35. STULZ CyberCon : Pre-Engineered Modular Designed for growth as needed. STULZ CyberCon allows build out of multiple modular / containerized data centers. STULZ CyberCon Container with IT Racks Add units as capacity needs increase Back-to-back and/or side-by-side configurations

36. STULZ CyberCon : Pre-Engineered Modular Configuration – Example One • Direct Air Economizer • Outside air (<supply air temp) is directly introduced into the data center • Direct Adiabatic Cooling • Outside air cooled with an adiabatic system and directly introduced into the data center • DX Cooling (Integrated DX Condenser) • Used only when required for trim or full capacity

37. STULZ CyberCon : Pre-Engineered Modular Configuration – Example Two • Indirect Water Economizer • Outside air cools water in a closed loop • Integrated Adiabatic Fluid Cooler • Adiabatic cooling of closed water loop when more cooling is needed than water economizer can provide • Integrated Chiller • Chiller to trim closed water loop temperature if outside conditions are not suitable for water economizer or adiabatic fluid cooler only STULZ CyberCon modular system, with integrated indirect water-side economizer cooling, based onSTULZ Dynamic Economizer Cooling

38. STULZ CyberAiR®Perimeter Cooling • STULZ Perimeter Cooling Units • DX CRAC’s and CW CRAH’s • Down-flow and Up-flow • Down-flow with front discharge • Broadest range of cooling capacities • Highest capacity CRAH’s on the market (up to 60,000CFM) STULZ 730 CRAH with 10 EC Fans and filter plenum STULZ 280 CRAH with front discharge

39. STULZ CyberAiR® Perimeter Cooling • Common Features • V-Frame now for both DX (CRAC) Evaporator and CW (CRAH) Chilled Water Coils • Optimal capacity and energy efficiency by providing optimized draw-through air pattern and reduced air-side pressure drop (over A-frame coils) • Optional Configurations • Multiple upflow & downflow air patterns available • Front or rear discharge units available (ideal for slab floors) • Multiple floor stand configurations available (including seismic requirements) • Water-side economizer with dual coil applications (DX/CW or CW/CW) • Optional Features • Integral steam canister humidifier with various capacities and proportional control option • Provide seamless control of external ultrasonic or other adiabatic humidification systems • Air-side economizer with vertical or horizontal mixing box • Hot water and low pressure steam reheat using an external heating medium • Electric reheat - multi-stage low watt density, electric resistance heaters

40. STULZ CyberAiR® Perimeter Cooling • CRAC Features • Highly efficient and reliable low noise scroll compressors • Single or multi-stage compressor arrangement including tandem configurations • Multiple stages of DX cooling to match load requirement • Micro Plate Heat Exchangers for efficient heat transfer • Optimized AWS/Free-cooling coils to closely match DX cooling capacities, increasing energy savings opportunities • Refrigeration-based dehumidification system effectively removes excess moisture • Hot gas reheat - provides reheat using recycled compressor heat • Snap acting / full floating hot gas bypass system provides cooling capacity modulation and evaporator coil freeze protection • Electronic Expansion Valves can be optimized to work over a wide range of conditions

41. STULZ CyberAiR® Perimeter Cooling • CRAH Features • Largest capacity perimeter CW units in the industry (up to 60,000 CFM) • Multiple EC Fan options (additional fans in same cabinet footprint) • All EC Fans mounted in the cabinet meet full performance without having to be dropped into the raised floor (due to geometry with CW V-coil) • Fewer units at higher capacity can significantly reduce capital cost &operating cost • 2 x CW Valves standard on CFD-510 and larger units (option for 1 CW valve) • Dehumidification efficiently achieved through reduced air volume at max cooling • Standard and Seismic Floor Stands available for all CW units • Filter Plenums designed with increased surface area for filtration, lower pressure drop, and improved energy savings • Standard MERV 8 filters (optional up to MERV 14 filters) • 100% Front Access on all sizes

42. Additional CW & DX Perimeter Cooling Other CW & DX Cooling Products from STULZ

43. Superior Components for Capacity and Efficiency EC FAN (backward curved plenum fan with Electronically Commutated motor) Why STULZ technology and design is better than the others! • Fans designed to operate at reduced speed to maximize efficiency • Fully scalable air volume • Superior efficiency as compared to forward curved fans • Over 20% immediate energy savings • Over 60% energy savings when running at partial load • Optimized under-floor pressure and balanced air flow • Low vibration; no belt dust • Maintenance free STULZ was the first to bring EC Fan technology to the U.S. market and still leads by matching with V-coils and independent control from CW valve with STULZ E2 controller!

44. Superior Components for Capacity and Efficiency • V-Frame Coils • V-Frame Evaporator Coils (CRAC) • V-Frame Chilled Water Coils (CRAH) Why STULZ technology and design is better than the others! • Minimizes the possibility of water carryover • Reduced air-side pressure drop verses A-Frame coil • Provides optimal draw-through air pattern for uniform air distribution • Constructed for maximum heat transfer with minimal water-side pressure drop (CRAH) • DX refrigerant flow is controlled by electronic expansion valves (CRAC) STULZ was the first to bring V-coil technology to the U.S. market and still leads by matching with EC Fans and independent control from CW valve with STULZ E2 controller!

45. Heat Rejection – Air Cooled Common features for Standard and MicroChannel Air Cooled Condensers • Direct-driven high performance axial fans • AC and EC Fan motors • Integrated control box with main disconnect and motor protection • Various fan speed control options based on refrigerant pressure • R-407c & R-410a rated • Low ambient temperature control options MicroChannel Condensers (SCS - MC) • MicroChannel coil design: better heat rejection with smaller footprint and improved SCOP • Lower weight than traditional design • Uses less refrigerant • Integrated receiver skid

46. Heat Rejection – Liquid Cooled Glycol System Remote Drycooler • Direct-driven high performance axial fans • AC and EC Fan motor • Integrated control box with main disconnect and motor protection • Free cooling dry coolers are available for the entire product line Glycol System Pump Packages • Single and dual pump package with redundant pumps • Individually powered or powered from Drycooler

47. STULZ CyberRow® Row Cooling • STULZ CyberRow • Ideal for high density cooling in open or contained systems • Provides for targeted hot spot reduction • New models with VFD Compressor and Micro-Channel Evaporator Coil • New model with additional FC Coil * VFD Compressor & Micro-Channel Evaporator ** VFD Compressor, Micro-Channel Evaporator, and additional FC Coil

48. STULZ CyberRow® Row Cooling • Common Features & Benefits • Performance: • Widest range of units with the largest cooling capacity in the industry • EC fans provide adjustable air volume based on real time cooling requirements at the lowest energy consumption • Flexible: • Adapts to all major manufacturers racks and rack containment systems • Installation on non-raised or raised floors • Suitable for new and existing data centers; easy to add units as you grow • Used in containment, open architecture, and hot spot reduction applications • Top or bottom pipe and power connections • 100% serviceable through front and rear access • DX with Free Cooling (FC) Coil available in 24” cabinet • Cold Air Discharge • Cold air discharge options: front or side discharge available • Front discharge recommended for containment configurations • Side discharge recommended for open architecture configurations • Controls • Various fan control options allowing optimized air distribution • Dual power with true auto switch-over function (all CW and 24” DX)

49. STULZ CyberRow® Row Cooling • Unit-Specific Features & Benefits • Chilled Water (CW) • 2-way or 3-way CW control valves • Low water-side pressure drop • Direct Expansion (DX) • DX systems provided with high efficiency, highly reliable, low noise scroll compressors • DX systems available with VFD Compressor and Micro-Channel evaporator (available on CRS-090 and CRS-091) • DX systems are available with free cooling option (available on CRS-091) • Capacity control utilizing electronic hot gas bypass with electronic expansion valves • R-410a refrigerant • Heat rejection with air, water, or glycol cooled condensers for the entire product range • Economizer • CRS-091 includes FC coil for water-side economizer (DX/CW or CW/CW)

50. STULZ CeilAiR® Ceiling Cooling • STULZ CeilAiR • Ceiling mounted air conditioners provide precision temperature and humidity control • The most complete line of ceiling mounted cooling products in the industry • The ultimate space saver