2 / 2 P/N 00-3250-507-0003-05 • ISS 03DEC19
Overview of typical fire system connections using a single Class A loop
Connecting loops and loop devices
For optimal system performance, we recommend a shielded
loop cable, 12 to 26 AWG (0.13 to 3.31 mm²), with 52 Ω (26 Ω
per wire) and 500 nF/km maximum.
Class A loops are supervised for open and short circuits.
Terminate unused Class A loops A (+) to B (+) and A (−) to
B (−). Each Class A loop can support up to 128 devices.
See the product installation manual for Class B loop
connection information.
Connecting inputs and outputs
Caution: The following connection information does not apply
to installations requiring EN 54-13 compliance. If EN 54-13
compliance is required, see the product installation manual.
All inputs and outputs (except 24V AUX) require a 15 kΩ end-
of-line resistor for termination to detect open or short circuits. If
an input or output is not used, install a 15 kΩ end-of-line
resistor across the unused terminals to avoid an open circuit
fault.
Connect input switches to INPUT1 and INPUT2 (62 Ω ≤ active
value ≤ 8 kΩ).
When connecting outputs, observe polarity or install a 1N4007
diode or equivalent to avoid inverted activation issues.
See the product installation manual for input and output
configuration options.
Mains fuse and batteries
Use a T4A-250V mains fuse for both 110 VAC and 240 VAC
operation. Check the product installation manual for 110 VAC
operation requirements.
The control panel requires two 12 V, 7.2, 12, or 18 Ah
rechargeable sealed lead-acid batteries.
For detailed battery requirements, see the product installation
manual.
Configuration
See your product installation manual for detailed configuration
information. The default installer password is 4444.
Contact information and product
documentation
For contact information or to download the latest product
documentation, visit firesecurityproducts.com
.
Product warnings and disclaimers
THESE PRODUCTS ARE INTENDED FOR SALE TO AND INSTALLATION BY
QUALIFIED PROFESSIONALS. UTC FIRE & SECURITY CANNOT PROVIDE
ANY ASSURANCE THAT ANY PERSON OR ENTITY BUYING ITS
PRODUCTS, INCLUDING ANY “AUTHORIZED DEALER” OR “AUTHORIZED
RESELLER”, IS PROPERLY TRAINED OR EXPERIENCED TO CORRECTLY
INSTALL FIRE AND SECURITY RELATED PRODUCTS.
For more information on warranty disclaimers and
product safety information, please check
https://firesecurityproducts.com/policy/product
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