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3
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 -
Vent Pipe Hook-up
.....................................................................................................8
Figure 3 -
Cutaway View
.............................................................................................................9
Figure 4 -
Pressure Gauge
.........................................................................................................9
Figure 5 -
Optional Alarm
............................................................................................................9
Figure 6 -
Double Check Pressure Equalizing Valve
................................................................10
Figure 7 -
Supplemental Support
..............................................................................................10
Figure 8 - Special
Piping for R-123 Systems
............................................................................10
Leak Testing Procedure............................................................................................................11
Annual Maintenance .................................................................................................................11
Following a Rupture..................................................................................................................13
Servicing and Replacing O-Rings.............................................................................................13
Appendix “A” (
Table for determining size of vessel NRS-3 can be installed on)
.......................14
Appendix “B” (
Excerpt from Guideline
BSR/ASHRAE 15-1992R) ............................................15
Appendix “C” (
Non-typical installations and their effect on valve’s operation
). .........................16
Parts List...................................................................................................................................17
Warranty
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