Cumulus Cloud Chamber


Conley Cumulus Cloud Chamber

General Description


Cumulus Cloud Chamber

The Conley Cumulus Cloud Chamber is a 42U self contained Class 1A data center in a NEMA Type 4 enclosure.

NEMA Type 4 Enclosures:  constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); and that will be undamaged by the external formation of ice on the enclosure”                       National Electrical Manufacturers Association

The Conley Cloud Chambers has the same enviromentals, power flexibility, internal monitoring and security that exist within a Class 1A data center.

The outside dimensions of the Cumulus Cloud Chamber are: 82.5″H x 29.25″W x 42.5″D. This includes the 1″  mounting blocks located on the top and a 3.25″ base blocks on its bottom. The base blocks creates a platform for attaching: levelers, casters base unit, tree stands, turntables, awnings, cable ladders and raceways.

The Cloud Chambers are structurally superior to other cabinets. The frame work, which includes the solid side panel, top and base are constructed of 14 gauge rolled steel and are welded into a union-body component.

A 14 gauge steel, adjustable numbered, 42U rack mount rail system with adjustability from 26.5″ to 28″ in length is installed within the chamber. Aluminum plates are fasten, to the doors, providing a place to mount security panels and/or non rack mounted equipment.

There are two possible ways for the network cables to enters the chamber: top- through 2 sets of knockout impressions each providing entry for a three inch conduit and/or an optional side mounted cable manager.

The  optional cable manager provides access through the side of the chamber. Two configurations are available:

1.)10 – 1 U Slots (1.75″) designed to accommodate 19″ patch boards. This provides the ability to create a flexible cable patch panel center on the side of the chamber. Each slot has a sealed cover and a cable support. Patch boards are optional.

2.) Conduit access: .Customized cable conduits and glands can be arranged to the end users needs. Glands and conduits are optional.

All electrical and cables used to power the Isolated ground receptacles, the low voltage components and the air conditioners are keep separate from all data and communication cables.


Cooling the chamber is accomplished by air conditioners with NEMA 12 or NEMA 4 ratings.

“NEMA Type 12 Enclosures: constructed for indoor use to provide a  degree of protection to personnel against access to hazardous parts; to provide a  degree of protection of the equipment inside the enclosure against ingress of solid  foreign objects (falling dirt and circulating dust, lint, fibers); and to provide a  degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing). “            

The best way to decide on the proper size of the air conditioner is the determine the heat load that it would have to cool. The maximum amount of power that is brought into the chamber, that is dedicated to the equipment, will define the maximum amount of cooling needed.

Air conditioners are sized by BTU’s ( British Thermal Units). One (1) watt of power, when it is used in computer and telecom equipment creates  3.42 BTU’s. So a 120 volt, 20 Amp service will produce 2,400 watts ( Volts x Amps = Watts) and the electrical code states that you can only use 80% of the service which means that the maximum wattage’s that needs to be cool is 1,920 ( 1.92 kW).

1,920 watts x 3.42 BTU’s = 6,566 BTU’s maximum cooling.

A minimum load must be established. An air conditioner that is rated to cool 5,000 to 7,000 BTU’s and has a minimum consists load of 4,000 BTU’s  the air conditioner will “short cycle”. It will still keep the equipment cool at the set temperature but it’s compressor and fans will be consistently turning on and off – reducing the life of the air conditioner unit. This can be avoid by either downsizing the air conditioner or increasing the heat load. To increase the heat load in the chamber and optional heater can be installed that will maintain the proper heat level.

All the air conditioners supplied  have a condensation evaporation units, so external plumbing is not necessary

The Conley Cumulus Cloud Chamber is uniquely design to accept two air conditioning units up to 12,000 BTUs (3.5 kW); augmenting the existing cooling or to supply redundancy cooling (N+N). When a N+N configuration is deployed the optional side cable manager will not be available and the cables will enter the chambers via conduits through the top.

There are door and opening sensors that controls the operation of the air -conditioner(s). When a door or side panel is open the air-conditioner(s) turns off; when closed it turns on. This helps prevent condensation from developing within the chamber when the unit is open.

The air-conditioners are monitored by the chamber controller. If a problems occurs within the mechanical operations of the unit and alarm/alert is sent.

The Chambers have a exclusive air flow plenum design that forces the cold air to the front of the equipment, where the systems intakes are, and a hot air return in the back. This provide superior cooling to the equipment while adding efficiency to the cooling systems. This simulate the hot/cool aisle scenario that is best practice within the Class 1A data center.

Fire Suppression

The Conley Cloud Chambers are equipped with a fire suppression system that is electrically monitored and activated. Two smoke detectors are installed in a series; this prevents false readings from accidentally activating the two agents canisters. The detectors are connect to the chamber’s controller. Upon activation an alarm /alert is sent.

The canisters are located at the front, attached to the base, and the other on the top at the rear of the chamber. The canister are fill with 60 grams Stat-X of aerosol agent .

 Stat-X is the only condensed aerosol currently listed by Underwriter’s Laboratories (UL). It is also listed/approved by Underwriter’s Laboratories of Canada (ULC), the Maritime and Coast Guard Agency (MCA) in UK, CSIRO/ActivFire in Australia, American Bureau of Shipping (ABS), European Control Board (ECB), and many more. In addition, it has been approved for sale by the local AHJ in many areas of the world including Asia, the Pacific Rim, the Middle East, South and Central America, Europe, the United States, and Canada.


High Voltage

The power distribution system consist of a NEMA 4 junction box located on the outside of the chambers . Power cables from the breaker panel is brought to this location and are hardwired to the chamber. Electrical whips with the twist lock plugs are available.

The external power is connected to a set of terminal blocks that feeds the 3 – isolated grounded receptacles. There are three receptacles within the chambers. Two are used to power the equipment. depending on the voltage and amperage that is being supplied this outlet will equipment with L5 – 20R, L5-30R, L6-20R or L6-30R. The third receptacle box contains a quad – duplex – 120V/20A for use by the technician and/or miscellaneous equipment.

Low Voltage

A second internal electrical box is dedicated to low voltage. This box contains the terminal block, relays and transformers that powers the internal systems of the chambers. Standard powering of the low voltage electrical box is a 120V – 20Amp cord with a 5-20P that can either be plug into a UPS (not provided in the standard configuration) or into one of the 5-20R receptacle.


Illumination within the chamber is supplied by 4 – 1′ long LED lights strips, each provides warm white lights at 314 Lm/ft.. The  strips located on a side of the front and rear doors. When the door(s) are open the air conditioner(s) turns off and the lights turns on; when the door(s) are closed the air conditioner(s) turns on and the light turn off.


A left hand swing with full length line hinges are standard on the doors ( swings opposite side of the air conditioner(s)). Each door has mounting screws for attaching a fiberboard used for security panels and non-rack mounted equipment. There is a 3.5″ clearance between the door (with the fiberboard attached) and the rail assembly.

Each door has a grounding studs. A 16″ braid grounding strap attaches to the stud and the chamber to ground the door.


A IP 65 rated swing handle with a key lock on both doors are standard on the  chambers. The handles are connected to a three point cam/rod compression system. Upgrades are available on the handles and locks to padlock handles, electrical/mechanical swing handle locks that HID card reads – embedded in the handle or stand alone, key pad systems or biometric systems can be integrated.

The Conley Cloud Chamber controller is a self-contained unit with on-board temperature and humidity/dew-point sensors.  The Chamber’s controller allows users to keep an eye on remote conditions from a secure web interface and receive SNMP, E-mail, text message and voice call* alert notifications when user-adjustable thresholds are exceeded.

The web interface provides an overview of environmental measurements with real time sensor data. All measurements are logged allowing users to collect data for trending and capacity management. The controller offers flexible access rights and security settings with up to three access account levels. It offers secure access through the web and supports HTTP and HTTPS protocols. Up to 50 customizable alarms can be configured with alarm escalations per sensor.

The Conley Chambers have the capacity to add optional sensors, devices and alarms: water ropes, water sensor, temperature/humidity sensors, power meters, web cameras, auto dialers and beacon/sirens.

 Standard Conley Chambers controller functions:

 4 panel sensors: 2 – doors, A/c panel and side panel

These sensors control the A/c -the Lights and the controller will log when the unit is open and close – general opening – any door or side panel- all on the same circuit. Lights turn on if any sensor is activated only turn off when every opening is closed.

 Controller to monitor and program to alert/alarm and activated  than optional device(s): Beacon/siren, Web camera, auto dialer.

 A/c Fault

Controller to monitor and alert/alarm:

  • A/c power failure
  • Compressor failure
  • Airflow restrictions

 Heat and Humidity sensor

Controller to monitor, log and program to alert/alarm

Fire Suppression:

Controller to respond to smoke detectors – in series and activate Stat-x canisters

Controller  alert/alarm that fire suppression system have been activated

Controller  alert/alarm that fire suppression canisters have been activated

Controller to monitor and program to alert/alarm and activated  than optional device(s): Beacon/siren, and auto dialer

Controller log the event

Conley Cumulus Cloud Chambers Standard Offering:

 NEMA 4 Chamber:

  • External: 82.5″H x 29.25″ W x 42.5″D – Including mounting blocks
  • Internal: 78.50″ H x 29″ x 42″ D
  • Semi gloss medium texture powder coated paint
  • colors: Black or Light Gray
  • 42U adjustable numbered rail assembly
  • Full doors with line hinges
  • 1/2″ seals on all doors and side panels
  • IP 65 Swing handle with key locks
  • Anti – Tipping Support

Electrical Fire Suppression System:

  • 2 Smoke Detectors
  • 2 60 gram STAT-X aerosol suppression


Option 1

  • 2 – 120v- 20AMP twist lock receptacles ( l5-20R) separate circuits
  • 1 -120v- 5-20R quad box ( four receptacle) one circuit

Option 2

  • 2 – 120v- 30AMP twist lock receptacles ( l5-30R) separate circuits
  • 1 -120v- 5-20R quad box ( four receptacle) one circuit

Option 3

  • 2 – 230v- 20AMP twist lock receptacles ( l6-30R) separate circuits
  • 1 -120v- 5-20R quad box ( four receptacle) one circuitOption

Option 4

  • 2 – 230v- 30AMP twist lock receptacles ( l-30R) separate circuits
  • 1 -120v- 5-20R quad box ( four receptacle) one circuit



  • 4 – 1″ LED strip lights – Warm white; 314Lm/ft.


  • Temperature/humidity
  • Air conditioner(s)
  •                Compressor failure
  •                Airflow restriction
  •                Power failure
  • Doors and side panels
  • Fire suppression

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