Honeywell Farenhyt IFP-75HV - 1: Single Interlock Zone Releasing; 2: Double Interlock Zone Releasing

106 IFP-75 Series Manual — P/N LS10147-001SK-E:E 4/6/2022
System Operation Releasing Operations
9.6.1 Single Interlock Zone Releasing
A single interlock zone utilizes a minimum of two addressable detectors and a designated manual release switch. Only addressable detectors
can be used. No conventional detectors can be used.
Conditions Required for a Pre-Alert Output Activation
If any single addressable detector is activated, the “Pre-Alert” output will activate and the “Pre-Alarm” output will deactivate. This alerts the
user that the initial stages required for a release condition are present. (Also refer to Table 9.5.)
Conditions required for a General Alarm and Release Output Activation
If two or more addressable detectors, or a manual release switch activate, the “Alarm” and the “Release” outputs will activate. (Also refer to
Table 9.5 below.)
9.6.2 Double Interlock Zone Releasing
A Double Interlock Zone uses a minimum of two addressable detectors, a designated manual release switch, and an interlock switch input.
An interlock switch is typically a dry-contact pressure switch and will be referred to as an interlock/pressure switch in this document. Only
addressable detectors can be used. No conventional detectors can be used.
Conditions Required for a Pre-Alert Output Activation
If any single addressable detector is activated, the “Pre-Alert” output will activate. This alerts the user that the initial stages required for a
release condition are present. (Also refer to Table 9.5.)
Conditions Required for a General Alarm Output Activation
If two addressable detectors, a manual release switch is activated, or an interlock switch is active, the “Pre-Alert”, and “General Alarm” out-
puts will activate.
+
–
Either NAC circuit
can be used.
UL-listed solenoid
supervisory module-
must be located at the
solenoid.
releasing solenoid
Use 1 solenoid per
circuit.
red
black
Figure 9.6 Wiring Configuration for Solenoid
NOTE: For releasing operations, a manual releasing disconnect switch is required per UL 864. Refer to the MRD-1 Series Document for
installation instructions.
Inputs Output Results
1st Addressable Detector X X X X
2nd Addressable Detector
X X X X
Manual Release Station
X X X X
Normal Pre-Alert Release and General Alarm
Table 9.5 Input Conditions and Output Results
!
CAUTION: DETECTOR SPACING
DETECTORS MUST BE INSTALLED AT 0.7 TIMES THE LINEAR SPACING AS DESCRIBED IN NFPA 72