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Janus Mv Series Manual

Engineered dry chemical fire extinguishing systems
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Mv Series and Lv Series
Engineered Dry Chemical
Fire Extinguishing Systems
Operation, Design, & Service Manual
Issued April 26, 2018
DOC324 REV C
(Revised March 22, 2022)
DRY-CHEMICAL EXTINGUISHING SYSTEM
UNIT - ENGINEERED TYPE
UL FILE # EX27541

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  • Page 1 Mv Series and Lv Series Engineered Dry Chemical Fire Extinguishing Systems Operation, Design, & Service Manual Issued April 26, 2018 DOC324 REV C (Revised March 22, 2022) DRY-CHEMICAL EXTINGUISHING SYSTEM UNIT - ENGINEERED TYPE UL FILE # EX27541...

  • Page 3: Table Of Contents

    2.1.1.1 Rupture Disc 2.1.1.2 Pressure Vent Port 2.1.1.3 Agent Fill Port 2.1.2 Dip Tube 2.1.3 Cylinder Valve 2.1.3.1 Mv Series Valve Features 2.1.3.2 Lv Series Valve Features Trim Components 2.2.1 Pressure Gauge Assembly 2.2.2 Low-Pressure Supervisory Switch Assembly 2.2.2.1 Low-Pressure Supervisory Switch Conduit Adapter 2.2.3...
  • Page 4 Page: iv 2.6.1.2 Tankside (TS) Nozzle 2.6.1.3 Total Flood (TF) Nozzle 2.6.1.4 Three-Way Nozzle 2.6.1.5 Duct and Plenum (D/P) Nozzle 2.6.1.6 Screening (SCR) Nozzle 2.6.1.7 Total Flood, Perimeter (TFP) Nozzle 2.6.2 JSH Discharge Nozzles 2.6.3 Nozzle Blow-Off Caps SYSTEM DESIGN Hazard Analysis 3.1.1 Fuel Source 3.1.2...
  • Page 5 Page: v 3.4.3.1 Work Area and Plenum, OFPSB 3.4.3.2 Ducts, OFPSB Pipe Determination Peripheral Equipment and Accessories 3.6.1 Control Panel 3.6.2 Accessories Sample Equipment Order List SYSTEM INSTALLATION Mechanical Installation 4.1.1 Installing Cylinder Bracket Channels 4.1.2 Installing Discharge Piping 4.1.2.1 Threaded Pipe 4.1.2.2 Threaded Fittings 4.1.2.3 Grooved Fittings and Couplings 4.1.2.4 Pipe Reductions...
  • Page 6 Page: vi 7.2.1 Pneumatic Actuation Piping Recharging Agent Cylinder 7.3.2 Cleaning and Servicing The Valve Assembly 7.3.3 Recharge Procedure Recharging Remote Nitrogen Actuation Cylinder 7.4.1 Removing The Nitrogen Actuation Cylinder 7.4.2 Servicing The Valve Assembly 7.4.3 Recharge Procedure APPENDIX A - Safety Data Sheet APPENDIX B - Assorted Charts &...
  • Page 7 Figure 2.2.3a Electric Valve Actuator Figure 2.2.3b Electrical Valve Actuator w/ Limit Switch Wiring Diagram Figure 2.2.4 Manual Valve Actuator Figure 2.2.5.1 Mv Series Fittings Figure 2.2.5.2 Lv Series Fittings Figure 2.3.1 Remote Nitrogen Actuation Cylinder Figure 2.3.2 Remote Pneumatic Actuation/Bracket Kit Figure 2.3.3 Pneumatic Valve Actuator...
  • Page 8 Page: viii Figure 3.2.4.2a Nozzle Placement for Total Flood Perimeter Figure 3.2.4.2b Total Flood Perimeter Nozzle Top View Figure 3.2.4.2c Examples of Module Perimeter Total Flood Coverage Using the TFP Nozzle Figure 3.2.5 Screening Nozzle Arrangement Examples Figure 3.3.2.4 Nozzle Placement for Module Perimeter Figure 3.3.2.5 Module Perimeter Nozzle Top View Figure 3.3.4 Spacing For Two Nozzles,Round Duct Figure 3.4.3a Open Front Paint Spray Booths (OFPSB) Nozzle Placement, Example...
  • Page 9 Page: ix Table Index Table 1.1 - System Temperature Limitations Table 2.1.1 Cylinder Capacities Table 2.3.8 Flex Hose Lengths Table 2.6.2 - JSH Discharge Nozzle Sizes Table 2.6.3 - JSH Discharge Nozzle Blow-Off Caps Table 3.1.2a - General Purpose and Industrial Usage Nozzles Table 3.1.2b - Vehicle Paint Spray Booth Usage Nozzles Table 3.1.2c - Open Front Paint Spray Booth Usage Nozzles Table 3.2 Industrial Usage Nozzle Application and Minimum Flow Rates Table 3.2.4.1.1a TF Nozzle Coverages...
  • Page 10 Page: x Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 11 Page: xi Revision History Revision Description of Change Date Initial Printing 26-Apr-2018 UL Markings added. All references to "Large Dry Chemical" changed to "Engi- 22-Mar-2019 neered Dry Chemical". All references to "Fire Suppression System" changed to "Fire Extinguishing System". Part Number 26680 added. Sentence "The electric valve actuator has a life span of 25 years from date of manufacture"...
  • Page 12 Page: xii Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 13 Page: xiii Preface This manual is intended for use with the Janus Fire Systems® Mv Series and Lv Series Engineered Dry Chemical Fire Extinguishing Systems. Those who install, operate, design, or service these systems should read this entire manual. All design, implementation, and maintenance of the Janus Fire Systems® Engineered Dry Chemical Fire...
  • Page 14 Page: xiv Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 15: General Information

    ABC dry chemical shall not be used on machinery such as carding equipment in textile operations. Janus Fire Systems has separated the protection design guidelines for Mv and Lv Series Engineered Dry Chemical Fire Extinguishing Systems into the following separate sections: •...

  • Page 16: Listings And Approvals

    Vehicle Paint Spray Booths NOTE: It is important to note that Janus Fire Systems® nozzles have been UL tested for use in specific applications such as screening nozzles for open face paint spray booths and may also be used in general total flooding purposes in conjunction with the total flooding nozzles.

  • Page 17: Extinguishing Agent

    Authority Having Jurisdiction (AHJ). Janus Fire Systems® Engineered Dry Chemical Fire Extinguishing Systems store ABC dry chemical agent in steel cylinders. The dry chemical agent is then pressurized with nitrogen to 500 psig (34.48 bar) at 70°F (21.1°C).
  • Page 18 Page: 4 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 19: System Components And Description

    Section 2 System Components and Description SYSTEM COMPONENTS AND DESCRIPTION The Janus Fire Systems® Mv and Lv Series Engineered Dry Chemical Fire Extinguishing Systems can be divided into the following component categories: 1. Agent Storage Components - Storage components consist of the cylinder assembly(s), which contains the ABC dry chemical and the cylinder bracket(s), which holds the cylinder assembly securely in place.

  • Page 20: Cylinder Assembly

    Its rupture point is between 850 psi (58.6 bar) and 1000 psi (68.9 bar). This feature is not found on the Mv Series cylinder. Instead, a rupture disc is located on the side of the Mv Series cylinder valve as detailed in section 2.1.3.1.

  • Page 21: Dip Tube

    Page: 7 Section 2 System Components and Description 2.1.2 Dip Tube A rigid dip tube is threaded into the cylinder valve and extends down the entire length of the cylinder. 2.1.3 Cylinder Valve A differential pressure operated cylinder valve controls the release of dry chemical agent from the cylinder. It is made of forged brass and is threaded onto the cylinder neck.

  • Page 22: Mv Series Valve Features

    2.1.3.1 Mv Series Valve Features (See Figure 2.1.3.1a) The Mv Series cylinder valve has six key features: 1. Valve Actuation Connection: A threaded connection located on top of the cylinder valve serves as the attachment point for the electric (primary) or pneumatic (secondary) valve actuator.
  • Page 23 Page: 9 Section 2 System Components and Description 2” Grooved Coupling 2” Grooved to NPT (50 mm) Adapter Nipple (P/N 18555) (50 mm) (P/N 18474) Manual Valve Actuator (P/N 17001) 2” Grooved Elbow (50 mm) (P/N 18551) Electric Valve Actuator w/ Supervisory Limit Switch (P/N 20722) Low-Pressure...
  • Page 24 Page: 10 Section 2 System Components and Description 2” Grooved to NPT 2” Grooved Adapter Nipple Coupling (50 mm) (50 mm) 200 lb: 24” Flex Hose (610 mm) (P/N 18649) (P/N 18474) (P/N 18555) 600 lb: 34” Flex Hose (864 mm) (P/N 18650) Pilot Actuation Flex Hose Mid Line Tee...

  • Page 25: Lv Series Valve Features

    Page: 11 Section 2 System Components and Description 2.1.3.2 Lv Series Valve Features (See Figure 2.1.3.2a) The Lv Series cylinder valve has five key features: 1. Valve Actuation Connection: A threaded connection located on top of the cylinder valve serves as the attachment point for the electric (primary) or pneumatic (secondary) valve actuator.
  • Page 26 Page: 12 Section 2 System Components and Description Manual Valve Actuator (P/N 17001) Discharge Electric Valve Actuator Outlet w/ Supervisory Limit Switch (P/N 20722) 3” Grooved Elbow (80 mm) (P/N 18550) Low-Pressure Supervisory Switch Pressure Assembly 3” Grooved Coupling Vent Port (P/N 22946) (80 mm) Affixed to...
  • Page 27 Page: 13 Section 2 System Components and Description 40” Flex Hose (1016 mm) Pilot Actuation Flex Hose (P/N 18651) Mid Line Tee (Variable Size) (P/N 18622) FROM REMOTE NITROGEN ACTUATION CYLINDER TO SECOND Pneumatic Valve CYLINDER 3” Grooved Actuator Elbow (P/N 17019) Low-Pressure (80 mm)

  • Page 28: Trim Components

    The Mv and Lv Series cylinder assemblies shall not be transported with the pressure gauge assembly installed. Remove the pressure gauge assembly from the cylinder valve before transporting the Mv Series or Lv Series cylinder assembly even if the contents are still under pressure. Refer to Section 4.1.4.1 regarding installation and removal of the pressure gauge assembly.

  • Page 29: Low-Pressure Supervisory Switch Assembly

    Remove the low-pressure supervisory switch assembly from the cylinder valve before transporting the Mv Series or Lv Series cylinder assembly even if the contents are still under pressure. Refer to Section 4.1.4.2 regarding installation and removal of the pressure switch assembly.

  • Page 30: Low-Pressure Supervisory Switch Conduit Adapter

    Page: 16 Section 2 System Components and Description Fastening Screw 2.2.2.1 Low-Pressure Supervisory Switch Conduit Adapter 1/2" (15 mm) NPS P/N 99408 (See Figure 2.2.2.1a and 2.2.2.1b) Male Conduit Connection An optional conduit adapter is available for the low-pressure supervisory switch to facilitate the attachment of rigid or flexible conduit over the switch leads.

  • Page 31: Manual Valve Actuator

    Page: 17 Section 2 System Components and Description The electric valve actuator has limit switch contacts that are normally closed when the actuator is not installed onto the cylinder valve/remote pneumatic actuator. When the actuator is fully installed onto the valve actuation connection at the top of the cylinder valve, the limit switch contacts open.

  • Page 32: Discharge Connection Fittings

    Coupling Coupling (50 mm) (50 mm) P/N 18555 P/N 18555 The fittings for the Mv Series discharge Shipped with Cylinder Valve outlet consist of two 2 in (50 mm) grooved as part of Anti- Recoil Safety couplings, one 2 in (50 mm) grooved...

  • Page 33: Multi-Cylinder Arrangement Components

    Page: 19 Section 2 System Components and Description Multi-Cylinder Arrangement Components The following components complete the set up of multiple cylinder arrangements. 2.3.1 Remote Nitrogen Actuation Cylinder Actuation Connection Port / P/N 26311 (See Figure 2.3.1) Discharge Outlet In multiple cylinder systems, a remote nitrogen actuation cylinder (RNAC) is installed and connected to the pilot actuation line.

  • Page 34: Pneumatic Valve Actuator

    Page: 20 Section 2 System Components and Description 1/4” NPT Inlet Port (8 mm) 2.3.3 Pneumatic Valve Actuator P/N 17019 (See Figure 2.3.3) In multiple cylinder systems, a pneumatic valve actuator is attached to each cylinder at the valve actuation connection. It receives pressure from 2.00 in 50.8 mm the remote nitrogen actuation cylinder through...

  • Page 35: Pilot Actuation Mid Line Tee

    Page: 21 Section 2 System Components and Description 2.3.5 Pilot Actuation Mid Line Tee P/N 18622 (See Figure 2.3.5) 1.14 in 29.0 mm A 1/4 in (8 mm) 37° male JIC by MNPT brass branch tee is utilized to attach the pilot actuation line to the pneumatic valve actuator on all but the final secondary cylinder.

  • Page 36: Explosion-Proof Actuation Components

    Page: 22 Section 2 System Components and Description Explosion-Proof Actuation Components The following components are used in conjunction with or in place of standard components to allow installation of cylinders in potentially hazardous areas. Emergency Release Lever 2.4.1 Lever-Pull Manual Actuator P/N 19589 (See Figure 2.4.1) In an explosion-proof arrangement, the lever-pull manual actuator is installed via the manual/pneumatic actuator onto the remote nitrogen pilot cylinder...

  • Page 37: Pilot Actuation Check Valve

    Page: 23 Section 2 System Components and Description 2.4.4 Pilot Actuation Check Valve P/N 10262 (See Figure 2.4.4) An optional pilot actuation check valve is installed into the remote pilot actuation tee in order to isolate each remote pilot cylinder. It is a 1/4 in (8 mm) FNPT by MNPT check valve, with flow of direction OUT of the 2.50 in MNPT connection.

  • Page 38: Supplemental Components

    The check valve required depends on the Series type of the system. The Mv Series has 2 in (50 mm) FNPT connections and the Lv Series has 3 in (80 mm) grooved connections.

  • Page 39: Discharge Pressure Switch

    Page: 25 Section 2 System Components and Description 2.5.2 Discharge Pressure Switch P/N 97428 (See Figure 2.5.2) A discharge pressure switch is used in the system to send a signal confirming agent discharge to the control panel or to initiate the shut down of equipment that may deplete agent concentration.

  • Page 40: Discharge Manifold

    A manifolded cylinder arrangement must be fitted with a manifold check valve. Suggested manifold dimensions and arrangements are shown in Figure 2.5.3a, 2.5.3b, and 2.5.3c. Actual manifold size and dimensions must comply with hydraulic flow calculations derived from the Janus Design Suite® software. 20.5” (521 mm) 20.5”...
  • Page 41 Page: 27 Section 2 System Components and Description 29” (737 mm) 29” 29” (737 mm) (737 mm) Figure 2.5.3b Typical Cylinder Spacing for 600 lb Cylinders Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, &...
  • Page 42 Page: 28 Section 2 System Components and Description 34” (864 mm) 34” 34” (864 mm) (864 mm) Figure 2.5.3c Typical Cylinder Spacing for 1000 lb Cylinders Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, &...

  • Page 43: Pressure Release Trip

    35 lbs (15.88 kg). 2.5.5 Discharge Indicator P/N 20238 (See Figure 2.5.5) The Janus Fire Systems® Discharge Indicator acts as a nonelectrical visual indicator of system actuation. It is actuated through pilot pressure and remains in the upright (discharged) position until manually reset.

  • Page 44: Discharge Nozzles

    Section 2 System Components and Description Discharge Nozzles The Janus Fire Systems® Engineered Dry Chemical System utilizes both fixed orifice type nozzles and engineered orifice type nozzles as described in the subsections below. All dry chemical nozzles referenced in this manual can be designed and installed in unbalanced piping arrangements. All dry chemical discharge nozzles are for indoor use only.

  • Page 45: Three-Way Nozzle

    Page: 31 Section 2 System Components and Description 2.6.1.4 Three-Way Nozzle P/N 16174 (See Figure 2.6.1.4) This nozzle is specifically tailored for certain Vehicle Paint Spray Booth and Open Front Spray Booth Plenum hazards. It can also be used in general purpose and industrial hazards if the hazard criteria and the nozzle spacing and coverage parameters are the same as outlined in Section 3.2.

  • Page 46: Jsh Discharge Nozzles

    The JSH-360 and JSH-180 Discharge Nozzles are Total Flooding nozzles with varying orifice sizes as determined by the Janus Design Suite® Flow Calculation Software. JSH-360 nozzles are designed for 360° (8 port) radial or center room placement. JSH-180 are designed for 180° (6 port) sidewall placement.

  • Page 47: Nozzle Blow-Off Caps

    Page: 33 Section 2 System Components and Description 2.6.3 Nozzle Blow-Off Caps See P/N Below All Fixed Orifice nozzles ship with a blow-off cap, but the blow-off cap for the JSH-360 and JSH-180 nozzles must be ordered separately. The blow-off cap must remain in place when the nozzle is installed to prevent the entrance of moisture, contaminants, or other foreign materials into the piping.
  • Page 48 Page: 34 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 49: System Design

    Section 3 System Design SYSTEM DESIGN The Janus Fire Systems® Dry Chemical Fire Extinguishing System may be used on a variety of hazards in many types of applications. The guidelines listed in this section address and detail the design methods tested and UL listed for the hazard groups noted below: •...

  • Page 50: Choosing Proper System Type

    Page: 36 Section 3 System Design 3.1.2 Choosing Proper System Type It is necessary for the system designer to consider the physical characteristics and layout of the hazard to ensure proper protection. The system must meet the criteria for a particular hazard and the requirements of NFPA 17 for the system to be effective.
  • Page 51 Page: 37 Section 3 System Design 2. Vehicle Paint Spray Booth Hazard: Vehicle paint spray booths are enclosures designed for the purpose of spraying combustible or flammable paints (or other Class B materials) and conducting or directing the excess materials into a forced ventilation exhaust system. Vapors, mists and residues produced from the spraying operation are also conveyed through the exhaust system.

  • Page 52: General Purpose And Industrial Hazards

    7.84 (single nozzle system) ¹ Maximum discharge time is 30 seconds as required by NFPA 17. Actual discharge time to be determined by Janus Design Suite software ² Due to potential splashing, LAOH Nozzles as used for Local Application Overhead protection have a maximum flowrate in addition to a minimum flowrate.

  • Page 53: Local Application - Overhead

    LAOH Nozzle cannot discharge more than 2.25 lbs (1.02 kg) of dry chemical agent per second (a maximum flow rate of 2.25 lb/s (1.02 kg/s)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.

  • Page 54: Local Application - Tankside

    Each Tankside Nozzle must discharge a minimum of 1.5 lbs (0.68 kg) of dry chemical agent per second (a minimum flow rate of 1.5 lb/s (0.68 kg/s)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.

  • Page 55: Total Flood - Jsh Nozzles

    Page: 41 Section 3 System Design 3.2.3 Total Flood - JSH Nozzles Total flooding dry chemical systems are used to fill a volume with agent to protect any hazard within that volume. Typical applications include hazardous storage containers and warehouses. Total flooding systems require a fixed enclosure to be present around the hazard area to allow the system to build up the proper concentration of agent within the hazard area.

  • Page 56: Temperature Limitations

    5.26 lbs/sec (2.39 kg/sec).¹ The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required, as well as the drill orifices.

  • Page 57: Total Flood - Fixed Orifice

    6 in (152 mm) from the ceiling. The nozzle coverages are shown in Table 3.2.4.1.1a and 3.2.4.1.1b. NOTE: The Janus Fire Systems® Engineered Dry Chemical System has not been evaluated Underwriters Laboratories, Inc. with...

  • Page 58: Temperature Limitations

    12 ft (3658 mm) and 20 ft (6096 mm) (a minimum flow rate of 2.37 lb/s (1.07 kg/s)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.

  • Page 59: Total Flood - Module Perimeter Coverage

    Refer to Figure 3.2.4.2a and 3.2.4.2b for proper nozzle placement. The nozzle coverages are shown in Table 3.2.4.2.1. NOTE: The Janus Fire Systems® Engineered Dry Chemical System has not been evaluated Underwriters Laboratories, Inc. with...
  • Page 60 Page: 46 Section 3 System Design 12.5 ft 12.5 ft (3810 mm) (3810 mm) 27.2 ft (8290 mm) 27.2 ft 16 ft (8290 mm) 16 ft (4877 mm) (4877 mm) 12.5 ft (3810 mm) 32 ft 27.2 ft (9753 mm) (8290 mm) 25 ft (7620 mm)

  • Page 61: Temperature Limitations

    Each Total Flood Perimeter Nozzle must discharge a minimum of 1.78 lbs (0.8 kg) of dry chemical agent per second (a minimum flow rate of 1.78 lb/s (0.8 kg)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.
  • Page 62 Page: 48 Figure 3.2.5 Screening Nozzle Arrangement Examples Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 63: Vehicle Paint Spray Booth (Vpsb)

    Sometimes, additional turns, baffles, or obstructions in the booth’s plenum and duct may dictate the use of additional nozzles in order to ensure good distribution of dry chemical. The Janus Fire Systems® Open Paint Spray Booth does NOT require the exhaust fan to be shut down. Refer to Section 3.4 for more information.

  • Page 64: Temperature Limitations

    17.28 7.84 (single nozzle system) ¹ Maximum discharge time is 30 seconds as required by NFPA 17. Actual discharge time to be determined by Janus Design Suite software 3.3.1 Temperature Limitations The operating temperature range for Vehicle Paint Spray Booth applications is -20°F to 120°F (-29°C to 49°C).

  • Page 65: Nozzle Orientation - Standard Work Area Coverage

    3.3.2.1 Nozzle Orientation - Standard Work Area Coverage The Janus Fire Systems® Vehicle Paint Spray Booth System is flexible enough to protect a wide variety of Vehicle Booths of various dimensions. The maximum booth height is 23 ft 4 in (7112 mm). Each of the system nozzles have been tested to protect a Work Area Module.
  • Page 66 Page: 52 Section 3 System Design Table 3.3.2.1b Standard Coverage, Vehicle Paint Spray Booth Work Area Coverage, Remaining Side Length, ft Height, ft 23.33 14.00 13.63 13.25 12.88 12.50 12.13 11.75 11.38 11.00 10.63 10.25 9.88 9.50 9.13 9.00 14.00 13.63 13.25 12.88...

  • Page 67: Agent Application - Standard Work Area Coverage

    Each TF Nozzle must discharge a minimum of 1.48 lbs (0.67 kg) of dry chemical agent per second (a minimum flow rate of 1.48 lb/s (0.67 kg/s)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.

  • Page 68: Module Perimeter Work Area Coverage - Nozzle Orientation

    1.78 lbs (0.8 kg) of dry chemical agent per second (a minimum flow rate of 1.78 lb/s (0.8 kg/s)). The Janus Design Suite® Flow Calculation Software will determine the amount of dry chemical agent required to meet these flow rates based on the hazard dimensions and number of nozzles required.

  • Page 69: Plenum Coverage, Vpsb

    Page: 55 Section 3 System Design 3.3.3 Plenum Coverage, VPSB Table 3.3.3a Standard Plenum Coverage, VPSB Nozzle Dim. Per Nozzle Maximum Nozzle Nozzle Plenum Type Nozzle Orientation Specifications Offset* Used L x W x H Location Backdraft (Option 1) 12 in x 12 in Volume = 600 ft³...
  • Page 70 Page: 56 Section 3 System Design Table 3.3.3b Standard Plenum Coverage, VPSB, metric Nozzle Dim. Per Nozzle Maximum Nozzle Nozzle Nozzle Plenum Type Specifications Offset* Used L x W x H (mm) Location Orientation Backdraft (Option 1) 305 mm x 305 Volume = 16.99 m³...
  • Page 71 Page: 57 Section 3 System Design Table 3.3.3c Expanded Plenum Coverage, VPSB Nozzle Dimensions Per Maximum Nozzle Nozzle Nozzle Plenum Type Specifications Offset* Used Nozzle L x W x H Location Orientation Backdraft (Option 3) 12 in x 12 Volume = 1050 ft³ 5 ft x 9 ft x in Square, 0 in to...

  • Page 72: Plenum Coverage

    17.28 7.84 (single nozzle system) ¹ Maximum discharge time is 30 seconds as required by NFPA 17. Actual discharge time to be determined by Janus Design Suite software Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, &...

  • Page 73: Duct Coverage, Vpsb

    Page: 59 Section 3 System Design 3.3.4 Duct Coverage, VPSB The D/P Nozzle will protect either round or rectangular ducts up to 28 ft (8534 mm) in length. Any change in duct direction or additional length requires an additional D/P nozzle. The duct nozzle must be centered at the duct entrance, pointed in the direction of air flow.

  • Page 74: Open Front Paint Spray Booths (Ofpsb)

    12 ft (3657 mm) high to booths 18 ft 6 in (5639 mm) high. The Janus Fire Systems® Open Front Paint Spray Booth System has been tested with exhaust fan systems operating or run- ning. For Vehicle Paint Spray Booths, this testing has not occurred so it is necessary to shut off the booth exhaust fan prior to discharge of the system.

  • Page 75: Agent Application

    3.4.3.1 Work Area and Plenum, OFPSB The Janus Fire Systems® Engineered Dry Chemical System is flexible enough to protect a wide variety of Open Front Booth dimensions. The maximum parameters for each Module are given on Table 3.4.3.1a and b.

  • Page 76: Ducts, Ofpsb

    Page: 62 Section 3 System Design 3.4.3.2 Ducts, OFPSB The D/P Nozzle will protect either round or rectangular ducts up to 28 ft (8534 mm) in length. Any change in duct direction or additional length requires an additional D/P nozzle. The duct nozzle must be centered at the duct entrance, pointed in the direction of air flow.
  • Page 77 Page: 63 Section 3 System Design OPEN FRONT Figure 3.4.3a Open Front Paint Spray Booths (OFPSB) Nozzle Placement, Example Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 78: Pipe Determination

    Kg/Min 3/8 (10) 46.5 21.1 Pipe Determination 1/2 (15) 77.4 35.1 Pipe sizes must be determined using the Janus 3/4 (20) 136.2 61.8 Design Suite® flow calculation software. 1 (25) 99.3 Table 3.5 may be referenced for the purposes 1 1/4 (32) 380.4...

  • Page 79: Peripheral Equipment And Accessories

    Page: 65 Section 3 System Design Peripheral Equipment and Accessories The final step is the selection and placement of any and all control panels, detection devices, and accessories. This section provides a brief overview of these components. A more detailed description is available in other publications.

  • Page 80: Sample Equipment Order List

    97428 Switch, Discharge Pressure 97735 Sign, Warning, Exit, Dry Chemical 97733 Sign, Warning, Entrance, Dry Chemical Sample Mv Series Two Cylinder Equipment Order List (Manifolded) Quantity Description 25147-250 Cylinder Assembly, Dry Chemical, 600 lb (includes 250 lbs of agent) 18536 Bracket Assembly, Cylinder, 24”...
  • Page 81 Page: 67 Section 3 System Design Sample Lv Series Single Cylinder Equipment Order List Quantity Description 25148-650 Cylinder Assembly, Dry Chemical, 1000 lb (includes 650 lbs of agent) 18537 Bracket Assembly, Cylinder, 30” 20722 Electric Valve Actuator w/ Supervision 17001 Manual Valve Actuator 25804 Gauge Assembly, Pressure, Dry Chemical...
  • Page 82 Page: 68 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 83: System Installation

    Materials such as piping, pipe hangers, fittings, tubing, conduit, and mounting hardware are not typically supplied by Janus Fire Systems. These items are to be supplied by the installer and must meet the minimum required material specifications found in this manual, NFPA 17 - Standard on Dry Chemical Fire Extinguishing Systems, NFPA 72 - The National Electrical Code, as well as local building and fire codes or local norms.

  • Page 84: Mechanical Installation

    Page: 70 Section 4 System Installation Mechanical Installation Mechanical installation may be performed in conjunction with electrical installation or performed separately, but both installations must be completed before the system is commissioned (Section 5). Do not install the electric, pneumatic, or manual valve actuators until the system has been fully commissioned as detailed in Section 5.
  • Page 85 Page: 71 Section 4 System Installation Figure 4.1.1a Mv Cylinder Bracket & Dimensions 5.72 in (145 mm) 6.0 in (152 mm) Table 4.1.1a Mv Cylinder Dimensions 200 lbs 600 lb 46.26 1175 50.79 1290 39.98 1015 44.5 1130 19.8 21.5 16.0 24.0 Bracket Assembly includes:...
  • Page 86 Page: 72 Section 4 System Installation 6.34 in Figure 4.1.1b Lv Cylinder Bracket & Dimensions (161 mm) 4.25 in (108 mm) Table 4.1.1b Lv Cylinder Dimensions 1000 lb 61.38 1559 53.73 1365 30.0 30.0 34.0 31.9 Bracket Assembly includes: (2) 3/8" twirl nuts (P/N 18811) Bracket P/N 18537 (2) 3/8"-16 1-1/4"...

  • Page 87: Installing Discharge Piping

    Section 4 System Installation 4.1.2 Installing Discharge Piping Discharge pipe, fittings, brackets, and hangers are not normally supplied by Janus Fire Systems and must be provided by installer. Materials should be new and free from rust and corrosion. Pipe size, schedule, routing, reductions, changes in elevations, etc must be in accordance with the drawings and in accordance with calculations performed using the Janus Design Suite®...

  • Page 88: Grooved Fittings And Couplings

    Page: 74 Section 4 System Installation Class 150 lb fittings shall not be used. 4.1.2.3 Grooved Fittings and Couplings Grooved fittings and couplings must comply with NFPA 17 and have a minimum rated working pressure of 500 psi (34.48 bar) at 70°F (21.1°C) based upon carbon steel pipe roll or cut grooved in accordance with the fitting or coupling manufacturer's guidelines.

  • Page 89: Installing Nozzles

    Section 4 System Installation 4.1.3 Installing Nozzles Nozzle type is determined based upon the hazard being protected and flow calculations made by the Janus Design Suite software during the system design. All dry chemical nozzles are male NPT thread (except the TFP nozzle, which is female NPT) and must be installed as designed according to the guidelines covered under section 3.

  • Page 90: Installing Discharge Pressure Switch

    Page: 76 Section 4 System Installation 4.1.5 Installing Discharge Pressure Switch In a single cylinder system, pressure to operate the discharge pressure switch is supplied from the discharge piping. It must be installed using a tee on the supply piping no less than 12 inches (305 mm) above the pipe run to minimize the amount of dry chemical that enters the pressure switch.

  • Page 91: Installing Pilot Actuation Line

    4.1.6.1 Installation Using Flex Hose Janus Fire Systems flex hose assemblies may be used to assemble the pilot actuation line as shown in Figures 4.1.6.1a, 4.1.6.1b, and 4.1.6.1c. The appropriate length of flex hose for each cylinder assembly size is shown in Table 2.3.9.

  • Page 92: Installation Using Schedule 40 Pipe

    NFPA 17 and Sections 4.1.2 through 4.1.2.5 of this manual. Janus Fire Systems flex hose assemblies may be used to facilitate connection of the Schedule 40 actuation piping to the pneumatic actuators, utilizing appropriate 1/4" brass 37° JIC or 45° SAE flare fittings with a minimum pressure rating of 1200 psig (82.7 bar).
  • Page 93 Page: 79 Section 4 System Installation 200 lb - 24” Flex Hose (610 mm) 600 lb - 34” Flex Hose (864 mm) Pilot Actuation (P/N 18649 / 18650) Mid Line Tee Discharge Manifold 2” (50 mm) (P/N 18622) Discharge (Provided By Installer) Manifold Pressure Switch Pilot...
  • Page 94 Remote Pneumatic Actuation/Bracket Kit (P/N 97643) Remote Nitrogen Actuation Cylinder (P/N 26311) Figure 4.1.6.2 Alternate Pilot Actuation Line Configuration – Utilizing Copper Tubing (Mv Series Shown. Same for all Series) 1/4” (8 mm) Schedule 40 Pipe 1/4” (8 mm) Female (Provided By Installer) NPT x Female NPT Tee Pneumatic (Provided By Installer)
  • Page 95 Page: 81 Section 4 System Installation Manual Valve Actuator (P/N 17001) Diameter 0.28 in (7.11 mm) 1.69 in (43 mm) Electric Valve Actuator (P/N 20722) Remote Pneumatic 4.38 in Actuation/Bracket Kit (P/N 97643) (112 mm) 22.4 in (569 mm) 15.68 in (399 mm) Remote Nitrogen Actuation Cylinder...
  • Page 96 Page: 82 Section 4 System Installation Manual Valve Actuator Lever-Pull Manual (P/N 17001) Actuator (P/N 19589) Electric Valve Actuator (P/N 20722) Remote Pneumatic Manual/Pneumatic Valve Actuator Actuation/Bracket Kit (P/N 98533) (P/N 97643) Remote Pneumatic Low-Pressure Supervisory Actuation/Bracket Kit Switch Assembly (P/N 97643) (P/N 22946) XP Low-Pressure Supervisory Switch...

  • Page 97: Electrical Installation

    Page: 83 Section 4 System Installation Male NPT Adapter (P/N 18625) Male NPT Male NPT Adapter Adapter (P/N 18625) (P/N 18625) Tee, 1/4 in Secondary Remote FNPT Nitrogen Cylinders may (P/N 99894) be Manual Actuation or Manual/Electric Actuation (Manual Only Shown) Optional Check Valve May Be Used to Isolate Each Remote Actuation Cylinder...
  • Page 98 Page: 84 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 99: Commissioning System

    Piping should be checked for correct size, length, and grade and compared to the installation drawings, Janus Design Suite® flow calculation results, and manual limitations. Check pipe supports for proper type, mounting, and spacing.

  • Page 100: Discharge Piping Pressure Test

    Page: 86 Section 5 Commissioning System Discharge Piping Pressure Test Do not apply pressure to the discharge piping while the pipe is connected to the discharge outlet. Applying pressure to the discharge outlet may cause the valve to open and pressurize the distribution pipe with the dry chemical agent, causing personal injury or property damage.

  • Page 101: Installing Pneumatic Valve Actuator

    Page: 87 Section 5 Commissioning System Installing Pneumatic Valve Actuator Attaching the pneumatic valve actuator to the cylinder valve when the actuation pin is not fully locked into the “up” position may cause the cylinder valve to actuate, resulting in potential injury and/or property damage. Reset the pneumatic valve actuator by pushing up on the actuation pin until it bottoms out on the inside of the actuator body.

  • Page 102: Installing Manual Valve Actuator

    Warning Signs Warning signs must be placed at entrances to and inside protected areas. Additional Considerations Janus Fire Systems® equipment as shipped does not require painting. Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, &...
  • Page 103 Page: 89 Section 5 Commissioning System 5.5 in 140 mm 5.5 in 6.0 in 140 mm 152 mm 6.0 in 152 mm Figure 5.6a Dry Chemical Warning Sign - Exit (P/N 97735) 5.5 in 140 mm 5.5 in 6.0 in 140 mm 152 mm 6.0 in...

  • Page 104: Manual

    ENGINEERED DRY CHEMICAL FIRE SUPPRESSION SYSTEM IMPROPER INSTALLATION WILL RESULT IN SYSTEM MALFUNCTION. BEFORE HANDLING JANUS FIRE SYSTEMS® PRODUCTS, ALL PERSONNEL MUST BE THOROUGHLY TRAINED IN THE SAFE HANDLING OF THE CYLINDER CYLINDERS, AS WELL AS IN THE PROPER PROCEDURES FOR INSTALLATION, REMOVAL, AND CONNECTION OF OTHER CRITICAL DEVICES, ASSEMBLY P/N SUCH AS FLEXIBLE HOSE, VALVE ACTUATORS, AND ANTI-RECOIL DEVICES.

  • Page 105: System Inspection And Maintenance

    Section 6 System Inspection and Maintenance SYSTEM INSPECTION AND MAINTENANCE Each Janus Fire Systems® Engineered Dry Chemical Fire Extinguishing System must be properly inspected and maintained at regular intervals by competent individuals qualified in the installation and testing of dry chemical extinguishing systems and thoroughly trained in the functions they are expected to perform.

  • Page 106: Maintenance

    Safety Director or Manager, Security Director or Manager, Emergency Response Team, Maintenance, Department Manager, or local Fire Department. Those individuals responsible for maintenance of a Janus Fire Systems® Engineered Dry Chemical Fire Extinguishing System must be trained. Minimally, the date of service, name of technician performing the service, results of the service, gross weight, agent weight, cylinder pressure, cylinder temperature, and any other observations should be recorded noting any action taken to address or rectify a discrepancy.

  • Page 107: Semi-Annual Maintenance

    Page: 93 Section 6 System Inspection and Maintenance 6.2.1 Semi-Annual Maintenance In addition to the monthly inspection steps, at least semiannually the agent quantity and pressure shall be checked. 6.2.1.1 Pressure Check Check the pressure indicated by the gauge and the temperature of the cylinder and compare with the Table 6.2.1.1 in Appendix B.

  • Page 108: Five Year Maintenance

    Page: 94 Section 6 System Inspection and Maintenance • Check to be certain the cylinder is securely installed in the bracket with the appropriate fasteners and that the bracket is at the correct height • Check all nozzles to make certain they are securely installed on the pipe, aimed properly, not corroded, not plugged, correct orifice size, correct style, and the discharge pattern is not obstructed.

  • Page 109: Six Year Maintenance

    (6) year as per NFPA 17. If there is evidence of caking, the dry chemical shall be discarded and the system be recharged in accordance with the Janus Fire Systems recharge procedure. 6.2.5 Additional Notes on Maintenance The Mv and Lv Series low-pressure supervisory switch assembly and the pressure gauge assembly shall not be removed from the cylinder valve while the contents are under pressure.
  • Page 110 Page: 96 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...

  • Page 111: System Recharge And Reset

    Section 7 System Recharge and Reset SYSTEM RECHARGE AND RESET Those individuals responsible for maintenance of a Janus Fire Systems® fire extinguishing system utilizing dry chemical agent must be trained. This chapter does not include instructions on resetting the automatic control system. Refer to the appropriate technical manual for this information.
  • Page 112 7.3.2 Cleaning and Servicing The Valve Assembly Janus Fire Systems recommends that the following steps be followed prior to refilling the cylinder(s): Check the pressure gauge and cylinder weight to verify the cylinder is empty and at atmospheric pressure before attempting to remove the valve.
  • Page 113 Page: 99 Section 7 System Recharge and Reset Table 7.3.2 Clean Agent Valve Replacement Components Part Description Mv P/N Lv P/N Collar O-ring 18400 18400 Upper Piston O-ring 18475 18398 Lower Piston O-ring 18476 18399 Valve Cap O-ring 18399 18397 Valve Core 16999 16999...
  • Page 114 Page: 100 Section 7 System Recharge and Reset 15. Remove masking tape from valve cap threads and clean the threads on the valve cap. Carefully thread the top cap onto the valve assembly. Tighten securely, do not apply excessive force. 16.
  • Page 115 Page: 101 Section 7 System Recharge and Reset 15. Weigh cylinder assembly to be certain the filled weight is correct and equal to the total weight shown on the cylinder label. 16. Replace the charged cylinder in the bracket and follow procedures outlined in Section 4 and Section 5 to reinstall the system.
  • Page 116 Page: 102 Section 7 System Recharge and Reset Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 117 Page: 103 Appendix A Safety Data Sheet (refer to www.janusfiresystems.com for latest version) Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 118 Page: 104 Appendix A SAFETY DATA SHEET Section 1. PRODUCT AND COMPANY IDENTIFICATION Product Name: ABC Dry Chemical Fire Extinguishant Other Identifiers: Multi-purpose Dry Chemical Product Code(s): CH555, F13, F11 Model Code(s) of Extinguishers: 402, IS 18ABC, IS35ABC, IS 45ABC, 13ABC, V25ABC, VH25ABC, V30ABC, VH30ABC, V50ABC, VS50ABC, VS75ABC, V250ABC Recommended Use:...
  • Page 119 Page: 105 Appendix A GHS – Hazard Phrases GHS Hazard GHS Codes(s) Code Phrase(s) Physical None Health H303 May be harmful if swallowed Causes mild skin irritation Causes eye irritation May cause respiratory irritation Environmental None Precautionary: General P101 If medical advice is needed, have product container or label at hand Prevention Avoid breathing dust Wash hands and face thoroughly after handling...
  • Page 120 Page: 106 Appendix A Cut-off Levels Chemical Name Reproductive Carcinogenicity Mutagenicity Other Hazard Toxicity Classes Mono-ammonium Phosphate Fullers earth magnesium aluminum silicate Mica- potassium aluminum silicate Silicone oil methyl hydrogen polysiloxane Calcium carbonate Amorphous silica precipitated synthetic zeolite Yellow 14 pigment – di-azo dye Section 4.
  • Page 121 Page: 107 Appendix A Section 5. FIRE-FIGHTING MEASURES Flammable Properties: Not flammable Flash Point: Not determined Suitable Extinguishing Media: Non-combustible. Use extinguishing media suitable for surrounding conditions. Hazardous Combustion Products: Carbon oxides Explosion Data: Sensitivity to Mechanical Impact: Not sensitive Sensitivity to Static Discharge: Not sensitive Unusual fire/explosion hazards:...
  • Page 122 Page: 108 Appendix A Section 7. HANDLING AND STORAGE Personal Precautions: Use appropriate PPE when handling or maintaining equipment, and wash thoroughly after handling (see Section 8). Conditions for Safe Storage: Keep product in original container or extinguisher. Contents may be under pressure – inspect extinguisher consistent with product labeling to ensure container integrity.
  • Page 123 Page: 109 Appendix A Personal Protective Equipment – PPE Code E: The need for respiratory protection is not probable during short-term exposure. PPE use during production process must be independently evaluated. Eye/Face Protection: Tightly fitting safety goggles Skin and Body Protection: Wear protective gloves/coveralls Respiratory Protection: If exposure limits are exceeded or irritation is...
  • Page 124 Page: 110 Appendix A Autoignition Temperature None Boiling Point/Range Not Applicable Melting Point/Range 190 C Flammability Limits in Air Upper – Not Flammable; Lower-Not Flammable Explosive Properties: None Oxidizing Properties: None Volatile Component (%vol) Not Applicable Evaporation Rate: Not Applicable MMHG @ 37.8 C Not Applicable Vapor Density:...
  • Page 125 Page: 111 Appendix A Acute Toxicity Values - Health Chemical Name LD50 LC50 (Inhalation) Oral Dermal Mono-ammonium phosphate 5750 mg/kg (rat) >7940 mg/kg (rabbit) Not available Mica None None None Fullers Earth None None None Silicone oil None None None Calcium carbonate 6450 mg/kg (rat) 500 mg/24 hr (rabbit)
  • Page 126 Page: 112 Appendix A Aquatic Toxicity Values – Environment – None Known Chemical Name Acute (LC50) Chronic (LC50) Mono-ammonium phosphate Mica Fullers Earth Silicone oil Calcium carbonate Amorphous silica Yellow 14 pigment Section 13. DISPOSAL CONSIDERATIONS Safe Handling Use appropriate PPE when handling, and wash thoroughly after handling (see Section 8).
  • Page 127 Page: 113 Appendix A If shipped in a stored pressure-type fire extinguisher, and pressurized with a non-flammable, non- toxic inert expellant gas, the fire extinguisher is considered a hazardous material by the US Department of Transportation and Transport Canada. The proper shipping name shall be FIRE EXTINGUISHER and the UN designation is UN 1044.
  • Page 128 Page: 114 Appendix A Calcium carbonate Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable 471-34-1 Amorphous silica Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable 69012-64-2 Yellow 14 pigment Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable 5468-75-7 European Risk and Safety phrases:...
  • Page 129 Page: 115 Appendix A U.S. State Regulatory Information: Chemicals in this product are covered under specific State regulations, as denoted below: Alaska - Designated Toxic and Hazardous Substances: None California – Permissible Exposure Limits for Chemical Contaminants: None Florida – Substance List: Mica Dust Illinois –...
  • Page 130 Page: 116 Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 131 Page: 117 Appendix B Assorted Charts Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 132 Page: 118 Appendix B Table 6.2.1.1 - Approximate Container Pressure vs. Temperature Temperature Pressure 90% Pressure °F °C psig psig 464.0 32.00 417.6 28.80 481.0 33.17 432.9 29.85 21.1 500.0 34.48 450.0 31.03 32.2 519.0 35.79 467.1 32.21 43.3 538.0 37.10 484.2 33.39...
  • Page 133 Page: 119 Appendix C Auxiliary/Legacy Components Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 134 Page: 120 Appendix C Legacy Components This section contains the technical information on parts that are no longer available for purchase. Please reference these sections for existing systems that utilize these components or to identify the recommended replacement component. DIN Connector with 1/2”...
  • Page 135 Page: 121 Appendix C C.1.2 Discharge Pressure Switch P/N 18773 (See Figure C.1.2) A discharge pressure switch is used in the system to send a signal confirming agent discharge to the control panel or to initiate the shut down of equipment that may deplete agent concentration. It is a single pole, double throw (SPDT) switch with contacts rated 10 Amps resistive at 30 VDC.
  • Page 136 Page: 122 Appendix C Auxiliary Components This section contains the technical information on non-standard parts. Manual Reset C.2.1 Explosion-Proof Pressure Switch, Manual Reset P/N 97429 (See Figure C.2.1) 3/4” (20 mm) FNPT A manually reset NEMA 7 and 9 Explosion-Proof Discharge Conduit Outlet Pressure Switch (P/N 97429) can be used in potentially explosive atmospheres to send indication of agent discharge to a releasing...
  • Page 137 Page: 123 Appendix D Alternate Nozzle Spacing Options Document # DOC324 MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM Issued: April 26, 2018 OPERATION, DESIGN, & SERVICE MANUAL Revised: March 22, 2022 UL FILE # EX27541 REV C...
  • Page 138 Page: 124 Appendix D A single JSH-180 sidewall nozzle may be used to protect a room with an area of 225 ft (20.9 m ) or less provided the nozzle is not more than 16.77 ft (5.11 m) from the farthest point it is intended to protect. Table 3.2.3.1a - Alternate Nozzle Spacing for JSH-180 Sidewall Nozzles - Selected Values X distance (width) Y distance (throw)*...
  • Page 139 Page: 125 Appendix D A single JSH-360 radial nozzle may be used to protect a room with an area of 225 ft (20.9 m ) or less provided the nozzle is not more than 10.605 ft (3.23 m) from the farthest point it is intended to protect. Table 3.2.3.1b - Alternate Nozzle Spacing for JSH-360 Radial Nozzles - Selected Values X distance (width)* Y distance (length)
  • Page 140 Page: 126 Appendix D 18 in (0.4572 m) MAXIMUM DISTANCE BETWEEN NOZZLES (See Figure 3.4.1c) Table 3.2.3.1c - Nozzle Spacing for Back-to-Back JSH-180 Sidewall Nozzles - Selected Values X distance (width) Y distance (length)* Area of Coverage ft² m² 4.57 30.0 9.14 450.0...
  • Page 141 Page: 127 Appendix D In a back-to-back sidewall arrangement, the nozzles shall be installed as shown in Figure 3.2.3.1c below and must be orientated with direction of flow in opposite directions so that the centerlines of both nozzles are parallel to the run of the tee immediately feeding into the nozzles.

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