OPERATOR MANUAL // SECTION 1
TECHNICAL DESCRIPTION
HONEYWELL
12
The Detector incorporates a 120-degree conical Field of View. The fire emissions
received by the Detector diminish at extreme range and edges of the field-of-
view. It is recommended that the Detector be pointed at the fire threat area for
the fastest response times to the smallest size fire. When multiple Detectors are
used to cover large areas, the Field-of-Views should overlap to insure complete
coverage of the fire threat area. The Field-of-View is not, however, limited to 120
degrees. Larger fires outside the 120 degree Field-of-View may cause the SS4-
AS/-AS2 to alarm. Based on the Inversed Square Law for radiated energy, a
larger size fire outside the Detection Range and field-of-view may cause the
Detector to alarm. Refer to Figure 1.
120 Degrees
Figure 1: Field of View, Horizontal, and Vertical.
Sensitivity to 1 Sq. Ft. Gasoline Pan Fire
1.5
Configuration Settings
The SS4-AS/-AS2 Detector may be reconfigured in the field and thus optimized
for special applications. The configuration of the Detector is set from a DIP
switches located on the middle circuit board of the Detector Module. The DIP
switch settings for each configuration are listed in Table 2.
These configurable options include:
1. Fire Verify Relay
- The Verify Relay may be disabled or enabled with
several Verify Time settings. It also may be set to act as another Fire
Relay. The Verify Time may be set from 5 to 30 seconds in 5
seconds increments.
The Factory setting: Verify Relay Disabled.
When the Verify Relay is enabled and Verify Time is set the Verify
Relay will energize and the Fire Relay will de-energize if the fire
conditions are still present at the end of the Verify Time period. In the
opposite case, the Detector will wait for 5 seconds plus another Verify
Time period to test for the fire conditions. This wait and verify cycle
will repeat 10 times or until the presence of the fire is confirmed. This
concludes the verification process. If the presence of the fire is not
established the Fire Relay will remain energized unless Non-Latching
mode is set. In case a subsequent fire is detected the entire
verification process will be repeated. The state of the Fire and Verify
