KITCHEN PROTECTION options
KITCHEN PROTECTION – KP ZONE PROTECTION – ZD COBRA

Features:
▪ Appliance Specific coverage
▪ Utilises a number of different types of nozzles to deal with specific appliances

Advantages:
▪Uses less agent
▪Has less nozzles and piping
▪Will typically have a lower cost for supply and install
Disadvantages:
▪Does not allow for reconfiguration of kitchen area

Features:
▪ Overlapping coverage
▪ Utilises a single type of nozzle over the risk to protect the whole cooking area

Advantages:
▪ Better coverage of whole cooking area
▪ Customer can reconfigure kitchen appliances under the hood area
▪ Simpler design for distribution pipe network
Disadvantages:
▪ Can not protect appliances with an enclosed cooking area
▪ Will typically use more agent than KP options

Features:
▪ Overlapping coverage with allowance for appliance specific coverage
▪ Utilises a single type of nozzle over the risk to protect the whole cooking area

Advantages:
▪ Better coverage of whole cooking area
▪ Customer can reconfigure kitchen underneath the hood area
▪ Simpler design for distribution pipe network
▪ Higher nozzle heights reduce piping and keeps nozzles clear of operators
▪ Push-Lock pipe fittings simplifies install
Disadvantages:
▪ Incompatible with older systems piping networks

SYSTEM COMPONENTS
SUPRESSION SYSTEM – This is the system that will extinguish the fire.  This includes the agent cylinder(s), distribution pipe network and nozzle types.  This will include: Agent Cylinder(s), 1/2″ pipe for supply line and 3/8″ pipe for branch lines

DETECTION – Can be Fusible Links, Pneumatic Tubing, or Thermal Electric.  Selection will depend on the risk, client needs, the system design and location.  Type of detection selected will determined the Control System used.

CONTROL SYSTEM – This includes the Release Module, actuation network, manual pull stations and gas shut off valve.  All of Amerex’s Kitchen Systems are automatic systems with a minimum of one manual pull station.

If you need assistance in determining system design or complaince issues, ASK
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SYSTEM DESIGN

NOZZLES AND CYLINDERS The Amerex KP suppression system is determined by the number and type of nozzles required to protect the risk area.  This will define the number of agent cylinders, actuation cylinders and the amount of pipe required. REMEMBER: Number and type of nozzles required multiplied by their flowpoints =  Number of required agent cylinders

Appliance Nozzles – every appliance to be protected in the risk area must have at least one dedicated nozzle. Check the coverage area of the nozzles to see if you need more than one to protect a particular appliance. Amerex provides specific nozzles to protect different types of appliances.
Plenum Nozzles – a nozzle is required every 3m in length and every 1.2m in width/height.
Duct Nozzles – a single nozzle will protect a duct with a perimeter of up to 125cm or a diameter of 40cm. For ducts larger than this, measure the perimeter and divide by 104. Round up this number to determine the number of required nozzles.
Having confirmed the number of nozzles required, multiply the number of nozzles by their respective flowpoints and add these numbers together. The number of flowpoints a nozzle has can be found in a table in the design calculator or in the KP manual. For Example: A system that includes 1x Duct Nozzle at 1 Flowpoints each, 2x Plenum Nozzles at 1 Flowpoints each and 3x Single Burner Appliance Nozzles at 0.5 Flowpoints each = (1N x 1NFP) + (2N x 1NFP) + (3N x 0.5NFP) = 4.5 Flowpoints in Total (TFP).

An Amerex KP 3.75 gallon agent cylinder provides enough agent to support a maximum of 11 flowpoints. To determine the number of cylinders you will need, divide the total nozzle flowpoints by the cylinder’s maximum flowpoints (MFP) and round up to the nearest whole number. Using the previous example: 4.5TFP / 11MFP = 0.4 = 1 Agent Cylinder required. Other cylinder sizes aavailable.

PIPING NETWORK The pipe network is divided into three keys areas; the supply line, the supply branch line and the nozzle branch lines. As Pre-Engineered systems there are limitations on the length of the pipework, and the number of Elbows and T-junctions which are specified.
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