93-520-20 Issue 3.3 Page 11 of 60 CirrusPro Engineer’s Manual
1.4 UL and ULC information Pro X4
The following information is required to ensure the units compliance with the UL listing for UL 268 &
CAN/ULC-S529-02
Detection Principle: Cloud Chamber
Maximum
Intended Protected Area: 43,200 square feet (4013 square meters) 4 zones total
10800 square feet (1003.25 square meters) per zone
900 square feet (83.604 square meters) per sampling head or
point
Maximum Coverage
Per Sample Head or Point: 30’ x 30’ (9.144m x 9.144m)
Number of Zones: Field Programmable up to 4 Zones
Maximum Number of
Sampling Heads or Points: 48
Minimum Number of
Sampling Heads or Points: 2 per Zone
Alarm Thresholds: 4 per Zone
Sampling Manifolds: Minimum 2 per zone
Maximum 12 per zone
Zone Manifold: 1 per Zone
Sampling System DT
(Transport Time)
Maximum Allowed:
1 Zone System 120 Seconds
2 Zone System 90 Seconds
3 Zone System 75 Seconds
4 Zone System 60 Seconds
Sampling System DT
(Transport Time)
Minimum Allowed: 6 Seconds
Controls: Push Buttons
Indicators: Pre-Alarm, Fire 1, Fire 2, Fire 3 LED’s
Power and Fault LED’s
LCD display for Particle levels, Alarm and Fault Text
Power Requirements: 21-27V dc Unit must be used with a UL 1481 Listed Power
supply
Contact Ratings: 1A at 30V dc
4 Alarm relays per zone (Non-monitored volt free contacts)
1 Fault relay (Non-monitored volt free contact)
Outputs: Audible alert, RS232 serial computer Interface
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