Redi Controls RuptureSeal RS-2 Operation & Maintenance Manual

Rupture disk backup relief valve for low pressure centrifugal chillers

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RuptureSeal
Model
RS-2
Rupture Disk
Backup
Relief Valve.....
.....for Low Pressure Centrifugal Chillers
Manufactured in accordance with
ASHRAE Guideline 3-1990 Sec. 4.6
Flow Tested per ASME Standards
Redi Controls, Inc.
Installation Operation & Maintenance Manual
R-11
R-113
Patent Numbers 5,577,389 & 5,644,930
R-123
File Literature No. 1028-04

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Summary of Contents for Redi Controls RuptureSeal RS-2

  • Page 1 Redi Controls, Inc. Installation Operation & Maintenance Manual File Literature No. 1028-04 RuptureSeal ™ Model RS-2 Rupture Disk Backup Relief Valve..Patent Numbers 5,577,389 & 5,644,930 ..for Low Pressure Centrifugal Chillers R-11 R-113 R-123 Manufactured in accordance with ASHRAE Guideline 3-1990 Sec. 4.6...
  • Page 2 Revised Technically as of April 15, 1996 This Copy was Printed as of February 4, 2005 © 1994 INDIANAPOLIS SPECIALTY VALVE, INC., IND’PLS, IN This product is marketed and sold by Redi Controls, Inc., under license from Indianapolis Specialty Valve, Inc.
  • Page 3: Table Of Contents

    Table of Contents ............................Page GENERAL INFORMATION ......................4 Specifications ..........................5 General Overview........................5 Installation Kit ..........................6 Field Provided Items........................6 INSTALLATION .........................7 Figure 1. - Typical Installation.....................8 Figure 2 - Hook-up to Vent Pipe ....................8 Figure 3 - Cutaway View ......................9 Pressure Gauge and Auxiliary Alarm ..................9 Supplemental Mounting Support ....................9 Double Check Pressure Equalizing Valve ................10 Chillers utilizing R-123 (special piping instructions) ..............10...
  • Page 4: General Information

    GENERAL INFORMATION YOU ARE URGED TO READ THIS MANUAL COMPLETELY BEFORE INSTALLING THIS VALVE Upon Receiving Your Unit Contact Equipment Servicing Inspect the unit for possible damage caused during shipping. before attempting to use a damaged unit. (317) 865-4130. Warnings and Cautions Warnings Cautions NOTE:...
  • Page 5: Specifications

    Specifications Flow capacity: 940 SCFM Double check pressure equalizing valve (included) Set pressure: 15 psig Every valve 100% tested for pressure Reseals “bubble tight” within 3 psi of set setting and leakage pressure O-Rings serviceable without disturbing Refrigerant compatibility: R-11 pressure relief calibration R-113 &...
  • Page 6: Installation Kit

    Installation Kit Kit includes: One (1) Pre-assembled RS-2 RuptureSeal™ which includes: 3 O-rings & NOTE: Eight (8) 1/4” Stainless Steel Cap Screws See Figure One (1) Collection Trap Chamber Cover 3 on Page 9 One (1) Carbon Fragment Collection Trap Canister Insert for location of parts on with Special Tack Compound...
  • Page 7: Installation

    INSTALLATION Installation of the RuptureSeal™ should be performed only by qualified personnel. The following installation instructions should be thoroughly read and understood before attempting installation. Minor alterations to the existing rupture disk vent piping are necessary to install the RuptureSeal™ valve.
  • Page 8: Figure 1. - Typical Installation

    INSTALLATION (continued) 1. Determine the best mounting arrangement for the RuptureSeal™ in relation to the chiller’s existing rupture disk, vent piping, and the recommended supplemental support. The best arrangement is one that places the RuptureSeal™ as close as possible to the rupture disk. The valve body can be rotated to orient the “outlet to vent pipe”...
  • Page 9: Pressure Gauge And Auxiliary Alarm

    Tee The ALARM should be set to activate between 4 and 10 psig. Contact equipment servicing for information on the optional Redi Controls Alarm™. Supplemental Mounting Support It is recommended that a supplemental mounting support be provided for the RuptureSeal™ valve to relieve any stress it may put on the rupture disk assembly (see Figure 1 on page 8).
  • Page 10: Double Check Pressure Equalizing Valve

    Otherwise, accidental bursting of the rupture disk could occur by imploding the rupture disk into the chiller! (35) 1. Remove pipe plug (or alarm, if the optional Redi Controls Alarm™ is used) from alarm port (14) of Tee 2. Utilizing a 1/8” NPT x 1/4” Flair half union, connect a refrigeration manifold set (low side hose) to...
  • Page 11: Maintenance

    MAINTENANCE Following a Rupture Perform “Annual” maintenance procedures (steps 1 thru 16 - see below) and replace the Carbon Fragment Collection Trap Canister Insert with a fresh one. Annual Warning: Removal of the wired screws and lead seal from the valve body will destroy the pressure relief calibration and void the warranty.
  • Page 12: Servicing And Replacing O-Rings

    MAINTENANCE (continued) (10) 11. Remove the collection trap canister from the trap chamber and inspect the tack compound. The compound should be soft and very tacky to the touch. If not, or if there is any doubt about the quality of the tack compound, replace with a new canister with fresh compound. (Contact equipment servicing for Kit “RS-2 TACK KIT”...
  • Page 13: Appendix "A" (Table For Determining Size Of Vessel Rs-2 Can Be Installed On)

    Appendix “A” ™ RuptureSeal Model RS-2 (940 SCFM) R-11 R-113 R-123 Purpose of Table This table will assist the installer in determining the maximum size of chiller vessel (evaporator) with a two inch (2”) carbon rupture disk that can be fitted with the Model RS-2 RuptureSeal™ valve. (NOTE: PURSUANT TO ASHRAE GUIDELINES, WHEN A PRESSURE RELIEF DEVICE IS INSTALLED IN SERIES WITH A RUPTURE DISK, THE FLOW CAPACITY OF THAT DEVICE MUST BE DE-RATED BY 10%.) Thus, after installation in series with a two inch (2”) carbon rupture disk, the...
  • Page 14: Appendix "B" (Excerpt From Guideline Bsr/Ashrae 15-1992R)

    Appendix “B” Excerpt from Guideline BSR/ASHRAE 15-1992R 9.7.5 The minimum required discharge capacity of the pressure-relief device or fusible plug for each pressure vessel shall be determined by the following: C = f DL WHERE: minimum required discharge capacity of the relief device in POUNDS OF AIR PER MINUTE (KG/S), (emphasis and asterisk added) outside diameter of vessel...
  • Page 15: Appendix "C" (Non-Typical Installations And Their Effect On Valve's Operation)

    Appendix “C” ONLY IF ABSOLUTELY NECESSARY, the RS-2 can be mounted in positions other than the preferred “Typical Installation” position illustrated in Figure 1 on page 8 (but not upside down). See the following illustrations for other possible mounting positions. NOTE: If the RS-2 RuptureSeal™...
  • Page 16 Appendix “C” (continued) Variations in RS-2 valve mountings to a chiller’s rupture disk. The RuptureSeal™ is designed to be installed directly into the outer flange of the chiller’s rupture disk, WITHOUT THE USE OF A 45º or 90º ELBOW TURN BETWEEN THE RUPTURE DISK AND THE RuptureSeal™, or any piping extensions.
  • Page 17: Parts List

    Parts List for RS-2 Name of Part Part Number 1. RS-2 TACK Kit RS-2 TACK 2. 30” Hg - 0 - 30 psi GAUGE RS-G1 3. Double Check Pressure Equalizing Valve RS-DCV1 O-Ring type & sizes: Valve seat O-Ring Parker - #2-133-V747-75 Valve body O-Ring Parker - #2-145-N674-70 Collection chamber flange O-Ring...
  • Page 18: Warranty

    Redi Controls, Inc. Equipment Warranty Subject to the terms below, REDI CONTROLS will, within one year after date of purchase, repair any REDI CONTROLS’ product being used by the original purchaser, which is defective due to faulty materials or workmanship. REDI CONTROLS has the right to repair or replace a defective part or replace the entire product.

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