Honeywell SILENT KNIGHT SK-5208, Installation And Operation Manual

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Control Panel Installation
P/N 151204 3-15
3.11.2 Class B (Style B) Zones
Zones 3 through 10 are Class B (Style B) only fire zones. Zones 1 & 2 may also be
programmed as Class A (Style D) or Class B (Style B), see Section 4.2.2 for zone 1 & 2 zone
programming.
Each Class B zone consists of a two-wire circuit that will detect the occurrence of an open in
the circuit, but may not be able to detect an alarm after such an occurrence. The detection of
an open will cause the audible trouble signal to sound and the SK-5208 will report the trouble
to the central or remote station (if programmed to do so).
Figure 3-6 shows how to wire a Class B (Style B) circuit. One side of each Class B circuit
connects to a zone input terminal and the other side of each circuit connects to Smoke power.
For each circuit, use a 4.7K-ohm EOL resistor wired in parallel with the normally open
contact farthest from the panel.
Figure 3-6 Model SK-5208 Class B (Style B) Circuits
Maximum circuit Resistance - 50 ohms
Maximum Total alarm current for all Class B (Style B) zones - 1 A
Maximum Standby Current per Zone:3.0 mA
Maximum Alarm Current per Zone:95 mA
Supervised
Power Limited
4.7 k
Ω
EOL
UL Listed
Model 7628
Note: Zones 1 and 2 can be
configured as either Class A
or Class B. See also Section
3.11.1.
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