Heat Dissipation - Tyco iSTAR Ultra Installation And Configuration Manual

Signal
Reader Data
(Direct
Wiegand
Connection)
a. To comply with UL requirements, use shielded, minimum 22 AWG stranded, twisted pair cable for monitor points,
supervised inputs, DSMs, and REXs. Use Belden 9462 or equivalent.
b. Check wire lengths to verify that voltage drops are acceptable.
Calculations are based on a single RM-4 reader with keypad and LCD (250 mA):
- Using 22 AWG, distance = 600 ft. (.0165 ft.)
- Using 18 AWG, distance = 1500 ft. (.0065 ft.)

Heat Dissipation

Table 2-6: Equipment Wiring Specifications, continued
From To
iSTAR Proximity/
Ultra or Wiegand
RM-4/4E signaling
module read head
The Tamper, Low Battery, and AC power fail inputs must be enabled
NOTE

and connected to the iSTAR Ultra to report for compliance with UL
requirements.
For UL listed products, burglar alarm inputs must be supervised.

UL Listed panic hardware shall be used to allow emergency exit from

a protected area.
The USTAR-GCM AC Fail/Lo Batt and COMM, USTAR-GCM and

USTAR-ACM Tamper, USTAR-GCM power, USTAR-ACM power
(Reader), USTAR-ACM lock 1 and lock 2 connections are not to leave
the room of installation or 25' beyond control unit. Therefore, these
connections were not tested for output transients.
Table 2-7 on page 2-15 lists the heat dissipation for the rack and wall mount configurations.
Configuration
Rack GCM
Rack ACM
Wall GCM and (1) ACM
Wall GCM and (2) ACMs
Belden #
or equiv. AWG
9942 22
9260 20
Alpha wire 18
5386C
Table 2-7: Heat Dissipation
Power Dissipated in
Enclosure
17.88 Watts
6 Watts
23.88 Watts
29.88 Watts
iSTAR Ultra Installation and Configuration Guide
# Max
Prs Shield Length
3 Yes 200 ft.
(60.96 m)
300 ft.
(91.4 m)
500 ft.
(152.4 m)
BTU/hour
61.0
20.5
81.5
102.0
Power
Max. Wire
Resistance
3.2 
3.2 
3.2 
2–15