NOTE: DO NOT APPLY WIRE

Selector Valves (Continued)

For installing selector valves, complete the following:

1/2 IN. THRU 1 1/2 IN. SIZE VALVES – These size valves are equipped with a threaded body. The valves are normally supplied for local pressure operation but can be ordered special for remote pressure operation.

1. At the location where the valve(s) are to be mounted, make certain they will not be subject to damage or corrosion.

2. Install valve(s) in the distribution piping making certain there is enough room above the valve to install the required actuation component. Also, make certain flow direction arrow on valve body is in the correct orientation.

NOTICE

If valve is very heavy, precautions must be taken to properly support the weight of the valve in the distribution piping network.

3. With valve properly installed and supported, attach actuation component to top threads of valve and pipe or wire back to detection panel, releasing device, or discharge manifold. See Figure 59. 4. If required, run 1/4 in. piping from the auxiliary outlet

on the valve flange to remote pressure operated devices, such as remote discharge indicator, pressure trip, or pressure switch.

are flanged and require carbon dioxide pressure for actuation. Depending on the location of the top plate, the carbon dioxide pressure is received either locally (from the valve inlet through a specially machined port in the valve) or remotely (piped into the remote inlet from a remote pressure source).

It is important to determine the type of valve needed in the installation (local or remote) and to identify which type of valve it is.

To determine which type of valve you have, carefully examine the location of the top cover plate and its position on the valve body casting. The body casting has a 1/4 in. pipe port labeled “Remote Inlet” on the top flange casting directly above the valve outlet flange. The top cover plate has a 1/4 in. pipe port labeled “Auxiliary Outlet” on the side of the plate.

If the “Auxiliary Outlet” port is directly above the "Remote Inlet" port, the valve is a LOCAL type.

If the “Auxiliary Outlet” port is 180 opposite the “Remote Inlet” port, the valve is a REMOTE type.

NOTICE

The top plate has an unmarked 1/4 in. plug which should never be used. Connection of any piping to this port will result in valve malfunction.

(OPEN POSITION) (CLOSED POSITION) (CLOSED POSITION)

HAND LEVER AIR VENT PIPE FIGURE 59 001902c (OPEN POSITION) SOLENOID VALVE AIR VENT (CLOSED POSITION) HAND LEVER (OPEN POSITION) LOCKING PIN AND CHAIN RESET KNOB AIR VENT ACTUATOR NAMEPLATE CAUTION !

Make certain directional arrow on valve body points in the direction of agent flow. If valve is incorrectly installed, system will not discharge.

CAUTION !

The incorrect selection of a valve in a installation will result in valve malfunction during actuation.

001902a 001902b HAND LEVER LOCKING PIN AND CHAIN RESET KNOB ACTUATOR NAMEPLATE

7-27

Selector Valves (Continued)

Complete the following steps to ensure that the valve will function as required:

1. Identify valve as previously indicated (local or remote).

2. Install valve in carbon dioxide distribution piping. The 2, 2 1/2, 3, and 4 in. valves require 3 in. x 2 in., 3 in. x 2 1/2 in., 3 in. x 3 in., or 3 in. x 4 in. flanges respectively to mate with the valve bolting circle. Flanges must be ASA 600 lb. class only.

3. If valve is a REMOTE type, connect the remote pressure piping to the valve “Remote Inlet” port. 4. If auxiliary piping is required, connect piping to the

1/4 in. “Auxiliary Outlet” port on the valve top cover plate. This port becomes pressurized when the valve is actuated. (A typical use for this is pressure switch connection to activate a discharge alarm.)

actuation component to top threads of valve and pipe or wire back to detection panel of releasing device. See Figure 59.

NOTICE

When using an electric solenoid valve for selector valve actuation, only one solenoid valve is allowed per AUTOPULSE circuit. See “Solenoid Valve RetroFit Instructions For Selection Valves,” Part No. 415846, for detailed installation instructions.

Lock Handle Stop Valves

The lock handle stop valves are threaded ball valves. The valve must be installed in the direction of the flow label. When installing the valve, make certain the threads on the mating pipe are free from grit, dirt, or burrs. Care must be taken to assure that any pipe sealants used are not so excessively applied to the pipe threads that the valve cavity becomes obstructed. The valves are equipped with a monitoring switch to provide constant supervision of the valve at the control panel. Each valve shipping assembly includes detailed wiring instructions.

Direction/Stop Valves

Directional valves can be manually actuated in two ways; either at the valve with the hand lever or remotely with a manual cable pull station attached to a sector located on the directional valve.

Before installing the valve in the carbon dioxide dis- charge piping, make certain there is enough clearance for either the hand lever to swing freely or the sector to rotate properly. See Figure 60 for dimension infor- mation.

NOTICE

Maximum distance a manual cable pull station can be located from the sector on the directional valve is 125 ft. (38.1 m). Operating force must be a maximum of 40# and require no more than 14 in. (35 cm) of travel to open valve.

CAUTION !

The use of any flange other than specified in Step 2 will cause a mismatch of bolting circles. This will result in a hazardous application which could cause personal injury due to the high pressures involved in the carbon dioxide system.

CAUTION !

Pre-discharge alarms, which warn personnel of an impending carbon dioxide discharge, must not be connected to this port. This port only become pressurized when the valve is activated.

Detection/Stop Valves (Continued)

Valve A B C D E

Size in. (cm) in. (cm) in. (cm) in. (cm) in. (cm)

1/2 in. 10 (25.4) 9 3/8 (23.8) 4 3/4 (12) 7/8 (2.2) 215/16 (7.4) 3/4 in. 14 (35.5) 12 3/4 (32.3) 5 5/8 (14.2) 1 1/8 (2.8) 3 5/8 (9.2) 1 in. 14 (35.5) 12 3/4 (32.3) 6 3/8 (16.1) 1 7/16 (3.6) 41/8 (10.4) 1 1/4 in. 17 (43.1) 15 5/8 (39.6) 7 7/8 (20) 1 11/16 (4.2) 5 (12.7) 1 1/2 in. 17 (43.1) 15 5/8 (39.6) 8 1/4 (20.9) 1 7/8 (4.7) 5 1/2 (13.9) Valve A B C D

Size in. (cm) in. (cm) in (cm) in (cm)

1/2 in. 4 3/4 (12) 3 (7.6) 7/8 (2.2) 2 15/16 (7.4) 3/4 in. 5 5/8 (14.2) 3 5/8 (9.3) 1 1/8 (2.8) 3 5/8 (9.2) 1 in. 6 5/16 (16) 4 1/8 (10.4) 1 7/16 (3.6) 4 1/8 (10.4) 1 1/4 in. 8 1/8 (20.6) 5 1/4 (13.3) 1 11/16 (4.2) 5 (12.7) 1 1/2 in. 8 1/4 (20.9) 5 3/8 (13.6) 1 7/8 (4.7) 5 1/2 (13.9) FIGURE 60

“THIS DIMENSION WITH VALVE IN OPEN POSITION” HANDLE IN NORMALLY CLOSED POSITION E C B A PIPE D HANDLE IN OPEN POSITION 4 3/4 IN. (12 cm)

1/8 IN. STAINLESS STEEL OR MONEL CABLE TO PULL BOX 3/8 IN. FLARED END FITTING IN OPEN POSITION ATTACH CABLE IN “FIGURE 8 (LOOP)” BEFORE FASTENING CLAMP

CABLE CLAMP 3 3/8 IN. (8.5 cm) 7 11/16 IN. (19.5 cm) 30°

PROVIDE A STOP FOR SECTOR A THIS POINT

CABLE TO HAVE A SLIGHT SLACK WHEN VALVE IS IN CLOSED POSITION 001871 001872 A B D 6 13/16 IN. (17.3 cm)

7-29

Pressure Trip

Pressure trips are used to actuate spring loaded or weighted mechanisms generally used to close doors or windows. The pressure trip should be securely mounted in the appropriate location and piped with 1/4 in. actuation piping back to the release device.

Pressure trips can be piped off the carbon dioxide dis- charge piping, which is the preferred method, or if the system is utilizing an ANSUL AUTOMAN II-C or mechanical ANSUL AUTOMAN release device, the pressure trip can be piped off the actuation line. See Figure 61.

Pressure trips can be piped in series and the last pressure trip must contain a 1/4 in. plug in the outlet port. See Figure 61. Maximum of two pressure trips in a single actuation line. Operating pressure must be a minimum of 75 psi (517 kPa) with a maximum load of 70 lbs. (31.8 kg).

FIGURE 61 001903 Pressure Switch

Pressure switches are used to pneumatically operate electrical circuits which, in turn, will operate alarms, lights, or turn on or turn off equipment.

Pressure switches can be piped off the carbon dioxide discharge manifold, which is the preferred method, or if the system is utilizing an ANSUL AUTOMAN II-C or mechanical ANSUL AUTOMAN release device, the pressure switch can be piped off the actuation line. See Figure 64.

1. Mount pressure switch(es) in desired location(s) with appropriate fasteners.

2. Install piping from main actuation line or from the carbon dioxide distribution manifold to pressure switch fitting. Piping to be 1/4 in. Schedule 40, black or galvanized steel pipe. The piping must be reduced from 3/8 in. NPT to 1/8 in. NPT to assemble to pressure switch (3/8 in. to 1/8 in. reducing cou- pling not furnished).

nents in accordance with manufacturer’s instructions. A QUALIFIED ELECTRICIAN should connect all electrical components in accordance with the authority having jurisdiction.

Time Delay

The time delay is available in settings of 10, 30, and 60 second delays. The time delay should be installed in the carbon dioxide system distribution piping. On one or two cylinder systems, the time delay should be mounted as close to the cylinder as conveniently possible. On mul- tiple cylinder systems, the time delay should be mounted in the discharge manifold, between the pilot cylinders and the slave cylinders. See Figure 62. The time delay can be mounted in any position, vertical, horizontal, or any angle in between. The time delay has 3/4 in. NPT inlet and outlet threads which will require reducing cou- plings if the manifold is smaller than 3/4 in. pipe.

FIGURE 62 001867 Pressure Operated Siren

The pressure operated siren operates off the carbon dioxide of the system. The siren should be piped with 1/4 in. Schedule 40 piping coming off the system discharge manifold.

A maximum of four sirens are allowed on a single system.

The maximum pipe length is 200 ft. (61 m) minus 1 ft. (0.3 m) for every elbow used.

Sirens and piping should be securely mounted with the proper fasteners. PLUG LAST PRESSURE TRIP PRESSURE TRIP INSTALLATION PRESSURE SWITCH (SEE COMPONENT SECTION) PRESSURE TRIP, PART NO. 805156

1/4 IN. VENT PLUG, PART NO. 842175