Specifications

151068 i
Content
Section 1
Overview
...................................................................................................................................................... 1-1
1.1 SK-4224 Description ................................................................................................................................ 1-1
1.2 How to Contact Silent Knight .................................................................................................................. 1-1
Section 2
Agency Requirements
............................................................................................................... 2-1
2.1 FCC Warning ........................................................................................................................................... 2-1
2.2 Underwriters Laboratories (UL) .............................................................................................................. 2-1
2.2.1 Requirements for All Installations .................................................................................................... 2-1
2.2.2 Requirements for Local Protected Fire Alarm Systems ................................................................... 2-1
Section 3
Before You Begin Installing
............................................................................................... 3-1
3.1 What's in the Box? ................................................................................................................................... 3-1
3.2 Optional Accessories ................................................................................................................................ 3-2
3.3 SK-4224 Board Layout ............................................................................................................................ 3-3
3.4 Electrical Specifications ........................................................................................................................... 3-4
3.5 Environmental Specifications .................................................................................................................. 3-4
3.6 Mounting the SK-4224 ............................................................................................................................. 3-5
3.7 Assembly .................................................................................................................................................. 3-6
3.8 Wiring Specifications ............................................................................................................................... 3-7
3.9 Calculating Current Draw and Standby Battery ...................................................................................... 3-8
3.9.1 Worksheet Requirements .................................................................................................................. 3-8
Filling in the Current Draw Worksheet, Table 3-6 (Section 3.9.3) ............................................... 3-8
3.9.2 Maximum Battery Standby Load ...................................................................................................... 3-8
3.9.3 Current Draw Worksheet .................................................................................................................. 3-9
Section 4
Hardware Installation
.................................................................................................................. 4-1
4.1 AC Power ................................................................................................................................................. 4-1
4.2 Battery Connection .................................................................................................................................. 4-2
4.3 Initiation Circuit Installation .................................................................................................................... 4-3
4.3.1 Contact Wiring .................................................................................................................................. 4-3
4.3.2 Two-Wire Smoke Detector Wiring ................................................................................................... 4-3
4.3.3 Class A Smoke Detector Installation ................................................................................................ 4-4
4.3.4 Four-Wire Smoke Detector ............................................................................................................... 4-5
4.3.5 Notification Circuit Installation ........................................................................................................ 4-6
4.3.6 Class A Notification Circuit Installation .......................................................................................... 4-7
4.4 Alarm and Trouble Relays ....................................................................................................................... 4-7
4.5 Auxiliary Power Circuit ........................................................................................................................... 4-7