STULZ PRECISION COOLING:
STULZ CeilAiR Ceiling Mounted Air Conditioners
As the ultimate space saver, STULZ CeilAiR® ceiling mounted air conditioners provide precision temperature and humidity control. Click here to learn about STULZ CeilAiR using 100% Outside Air
Features & Benefits of STULZ CeilAiR
Performance
- DX systems with independently circuited, high efficiency, high reliability, and low noise scroll compressors
- Wide range of options with DX or CW for precision cooling
- High static blowers are available for ducted systems
- Condensate pumps can be factory or field installed (in some models)
Flexible
- High efficiency EC Fans available as option in certain units
- Fully accessible in-place through easily removable side access panels
- Smaller capacity units easily mounted in a standard 2’ x 4’ grid of dropped ceiling plenum
- Spot cooler and ducted configuration
- Available with same-face / one-sided / L-shaped air pattern
- Available with low profile for limited installation height
- Small capacity with precision cooling characteristics
Dependable
- Aluminum cabinet construction for no corrosion / low weight
- Thermal insulation provided
Economizer
- Water-side economizer with free cooling or alternate water source
Controls
- Variety of controls from electromechanical to state of the art E2 microprocessor, allowing seamless integration with all BMS platforms
Humidification
- Integral steam canister humidifier with various capacities and proportional control option
Reheat
- Hot gas reheat – Provides reheat using recycled compressor heat
- Hot water and low pressure steam – Using an external heating medium
- Electric reheat – Single-stage low watt density, electric resistance heaters
Chilled Water (CW)
- Proportional controls
- 2-way or 3-way water / glycol control valves
- High pressure chilled water valves
Direct Expansion (DX)
- Heat rejection: air cooled self-contained, air cooled split, or water / glycol cooled
- Refrigerant R-407c or 410a
- Single and dual stage refrigerant circuits with enterlaced coils
STULZ CeilAiR Capacities:
| CW & DX | |
| kW | 3.5 – 35 |
| MBH/hr | 12 – 120 |
| Tons | 1 – 10 |
| CFM | 500 – 4,400 |
STULZ CyberRow® – Intelligent Rack Cooling
STULZ CyberRow cooling systems are ideal for high density cooling in open or contained systems and provide for targeted hot spot reduction.
Features & Benefits of STULZ CyberRow
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 raised / non-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)
Chilled Water (CW)
- 2-way or 3-way CW control valves
- Low water-side pressure drop
Direct Expansion (DX)
- DX systems provided with highly efficient, highly reliable, low noise scroll compressors
- 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
- Optional VFD Compressor
Economizer
- Water side economizer with dual coils (DX/CW or CW/CW)
STULZ CyberRow Chilled Water Capacities:
| Capacity | CRS-090 (12”) | CRS-180 (24”) |
| kW | 13 – 37 | 31 – 75 |
| MBH | 44 – 126 | 106 – 256 |
| Tons | 4 – 11 | 9 – 21 |
| CFM | 2,900 | 5,800 |
STULZ CyberRow Direct Expansion Capacities:
| Capacity | CRS-042 (12”) | CRS-084 (12”) | CRS-090 (12”)* |
| kW | 16 | 31 | 33 |
| MBH | 55 | 106 | 112 |
| Tons | 5 | 9 | 9.3 |
| CFM | 1,500 | 2,900 | 2,900 |
* VFD Compressor
STULZ CyberAiR® – Floor Mounted Precision Air Conditioners
STULZ Perimeter Cooling consists of direct expansion (DX) systems and chilled water (CW) systems. Both are available as down-flow and up-flow configurations.
Common Features:
- Multiple upflow & downflow air patterns available, providing flexibility to meet requirements
- Multiple floor stand configurations available (optional design to meet seismic requirements)
- Water-side economizer with dual coil applications (DX/CW or CW/CW)
- Optional – integral steam canister humidifier with various capacities and proportional control option
- Optional – provide seamless control of external ultrasonic or other adiabatic humidification systems
- Optional – air-side economizer with vertical or horizontal mixing box
- Optional – hot water and low pressure steam reheat using an external heating medium
- Optional – electric reheat – multi-stage low watt density, electric resistance heaters
STULZ offers the broadest range of cooling capacities for CW & DX precision cooling
DX – Air / Water / Glycol Cooled
| Product Family | Description | Cooling Capacity |
| STULZ CyberAir Floor Mounted Systems DX | Dual Circuit DX Systems | 21 kW – 105 kW (6 – 30 ton) |
| STULZ Mini-Space (CCU/D) |
Single Circuit DX | 3 kW – 25 kW (1 – 7 ton) |
| STULZ CyberONE EC (COS) |
Single Circuit DX | 7 kW – 35 kW (2 – 10 ton) |
| STULZ CyberTWO EC (VFS-EC) |
Dual Circuit DX w/EC Fan | 21 kW – 106 kW (6 – 30 ton) |
| STULZ ModulAiR (MCS) |
Modular Dual Circuit DX | 24 kW – 70 kW (7 – 20 ton) |
| STULZ FLAiR (FCS) |
Console DX | 5 kW –18 kW (1.5 – 5 ton) |
Chilled Water
| Product Family | Description | Cooling Capacity |
| STULZ CyberAir Floor Mounted Systems CW | Single & Dual Circuit CW Systems | 60 kW – 730 kW (16 – 214 ton) |
| STULZ Mini-Space (CCU/D) |
Centrifugal Fans | 3 kW – 25 kW (1 – 7 ton) |
| STULZ Compact-CWE (CCU/D) |
EC Fans | 30 kW – 360 kW (8 – 102 ton) |
STULZ is the industry leader in technical innovation
STULZ is the first CRAC / CRAH manufacturer in the USA to bring EC Fan technology to the data center. This technology in combination with STULZ innovative Chilled Water CRAH cabinet design provides an immediate energy savings of up to 30%, which can grow to over 50% savings compared to conventional fan technology with on/off control.
STULZ CyberHandler provides superior value as a pre-engineered outdoor air handling system for precision temperature and humidity control in a data center.
STULZ CyberHandler – Air Handling Unit
- Designed with proven STULZ technology
- Frees up white space in the data center
Features & Benefits of STULZ CyberHandler:
Modular Construction
- Pre-engineered modules designed to be configured to your needs
Click to view individual modules
Click to view some full configuration examples here
Designed for Data Centers
- Designed to handle higher return air temperatures than comfort cooling AHUs
- Engineered and tested for 7×24 operation
- Outdoor placement frees white space and keeps maintenance away from sensitive IT equipment
- STULZ E² controller, 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
| Direct Air Economizer with DX or CW | |
| kW | 124 – 459 |
| MBH | 421,400 – 1,567,400 |
| Tons | 35 – 131 |
| CFM | 12,000 – 42,000 |
STULZ Modular Container
STULZ CyberCon provides superior value for precision temperature and humidity control in a modular/containerized data center (POD).
Features & Benefits of STULZ CyberCon:
Designed for modular/containerized data centers
- Minimum mechanical installation required – only utilities (condensate drain and other options)
- No protruding components like fans, doors, or louvers
- DX cooling with direct adiabatic cooling
- STULZ E² controller, available with BMS interface
Standard 20’ high-cube container dimension
- Allows IT POD or Curb Mounting
- Rapid deployment
- Easy shipping and handling
- Short construction time
Hinged access doors
- Service access to all internal components
EC Fan system
- 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