2
HELIX™ Manual
(P/N 26291)
Table of Contents
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
2.13.1 Relay Control Module
....................................................................................
23
2.13.2 Horn and Strobe Assembly
............................................................................
24
2.14 Detection (LHD) installation Accessories
..................................................................
24
2.14.1 LHD Support Clips
.........................................................................................
24
2.14.2 Hood Fasteners
.............................................................................................
25
2.14.3 Hood Fasteners Rivet Style
..........................................................................
25
2.14.4 LHD Bulkhead Quik Seal
...............................................................................
25
2.15 Function Testing Devices
.........................................................................................
26
2.15.1 LHD Test Leads
.............................................................................................
26
2.15.2 Alarm Module
................................................................................................
26
2.16
STRIKE
ECS Parts List
.............................................................................................
27
Chapter 3: System Design
.......................................................................................................
29
3.1 Steps to System Design
.............................................................................................
29
3.2 Nozzles
......................................................................................................................
29
3.3 Agent Cylinder Sizing
.................................................................................................
30
3.4 Agent Distribution Network Design
.............................................................................
31
3.4.1 HX25 Agent Distribution Network (2 Nozzle)
.....................................................
32
3.4.2 HX50 Agent Distribution Network with Tees (4 Nozzle)
.....................................
33
3.4.3 HX50 Agent Distribution Network with Distributor Block (4 Nozzle)
...................
34
3.5 System Actuation Design
...........................................................................................
35
3.5.1 Single or Dual Agent Cylinder Networks with Electric Control Heads
................
35
3.5.2 Multiple Agent Cylinder Networks Pneumatic Control Heads
............................
36
3.6 STRIKE
ECS System Design
.....................................................................................
38
3.6.1 Introduction STRIKE
ECS
................................................................................
38
3.6.2 Detection Circuit Design
..................................................................................
42
3.6.3 Actuation Circuit Design
...................................................................................
44
3.6.4 Manual Pull Circuit Design
...............................................................................
45
3.6.5 Pressure Switch Circuit Design
........................................................................
46
3.6.6 Relay Module & Auxiliary Circuit Design
..........................................................
47
Chapter 4: System Installation
................................................................................................
48
4.1 Agent Cylinder & Agent Cylinder Bracket Selection
...................................................
49
4.2 Agent Distribution Network Installation
.......................................................................
49
4.2.1 Discharge Fitting Kit
.........................................................................................
49
4.2.2 Distributor Block
...............................................................................................
49
4.2.3 Nozzle Placement & Mounting
........................................................................
49
4.3 System Actuation Control Head Installation
...............................................................
50
4.3.1 Electric Control Head
.......................................................................................
50
4.3.2 Pneumatic Control Head
.................................................................................
51
4.4 50 psi Pressure Switch Installation
............................................................................
52
4.5 Electric Nitrogen Actuator Installation, Indoor & Outdoor
...........................................
52