Aritech IU2055NC Assembly instructions
2 / 4 P/N 10-5106-501-55NC-01 • 19FEB19
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4
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EN: Installation Sheet
Description
This document includes installation information for the
IU2055NC Conventional Zone Monitor Unit. The IU2055NC
provides an interface between conventional detection devices
and compatible addressable fire control panels.
The module supervises the conventional zone for open circuits,
short circuits, device faults, and alarm conditions.
The module enables the addressable panel to monitor the
presence and operation of:
• Up to 30 compatible conventional detectors in standard
installations
– or –
• Up to 20 compatible intrinsically safe (IS) conventional
detectors in intrinsically safe installations
Caution: Only use compatible devices as specified in the
IU2055NC Compatibility List (available at
firesecurityproducts.com).
Figures
Figure
1: Module assembly
Figure
2: Module layout
(1) Addressable loop in
(2)
Addressable loop out
(3)
Remote LED output
(4) Fault LED (yellow)
(5) Configuration jumper J5
(6
) Configuration jumper J4
(
7) Conventional zone output
Figure
3: Standard installation wiring (non-IS)
(1) Conventional zone output
(2)
Compatible conventional
detector
(3) 3.9 kΩ end-of-line resistor
Figure
4: IS installation wiring
(1) Conventional zone output
(2)
GBX2000 barrier
(3) Compatible conventional
detector (IS)
(4) 3.9 kΩ end-of-line resistor
Figure
5: Example address settings
Installation
Caution:
For general guidelines on system planning, design, installation,
commissioning, use, and maintenance, refer to the EN 54-14
standard and local regulations.
See your control panel compatibility list for details of devices
that can be used in fire system applications that require
EN 54-13 compliance.
Before installation
Conventional zone monitoring units add a significant load to
the addressable detection loop.
Always use the System Builder loop calculation software to
validate the predicted loop load before installation. If the
number of modules required in your installation requires a
higher load than is available, consider adding conventional fire
panels to your addressable network to avoid overloading the
detection loop.
Guidelines for intrinsically safe installations
The module must be installed immediately outside the
intrinsically safe (Ex-classified) area and as close to the
GBX2000 barrier as possible when used in an intrinsically safe
system.
The module must be configured for intrinsically safe operation
(see “Configuration” on page 3).
WARNING: Only devices connected to the output of the
GBX2000 may enter the intrinsically safe area.
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P/N 10-5106-501-55NC-01 • 19FEB19 3 / 4
Assembly
Install the module into the protective housing as shown in
Figure 1. Connecting cables should be fed through the cable
entry hole at the rear of the protective housing before the
module is fixed into place.
Addressing
Each module must be assigned an address from 1 to 128. Use
the rotary dial marked 0 to 12 to set the tens and hundreds part
of the address, and the rotary dial marked 0 to 9 for the
remaining digits. See Figure 5 for example address settings.
Note: To overcome the mechanical effects of shipping and
storage, we recommend that you first rotate each dial counter-
clockwise (to the 0 position) and then clockwise (to the dial’s
maximum position) before setting the required address.
To change the address of a module that is operational:
1. Disconnect the module from the loop.
Wait at least 5 seconds for the module to completely
power down.
2. Change the address on the module using the rotary dials.
3. Connect the module to the loop.
4. Configure the device at its new address, and then remove
the old device address at the panel.
Configuration
The module operation mode (standard or IS) is configured
using jumpers J4 and J5, as shown in the table below. The
default configuration is for standard operation (non-IS).
Jumper
Standard Intrinsically safe
J4
On Off
J5
Off On
Caution: Always check the jumper configuration to ensure that
it is correct for your installation type (standard or intrinsically
safe).
Wiring
Standard installation wiring (non-IS)
Connect the module to the addressable loop using the COM1
(negative) and COM2 (positive) inputs, as shown in Figure 2.
COM1 and COM2 are polarity sensitive.
For conventional zone output wiring for standard applications,
see Figure 3. The conventional zone output requires a 3.9 kΩ
end-of-line resistor.
Conventional loop impedance/loads for standard installation
are shown in the table below.
Short circuit
< 40 Ω
Fire
130 Ω to 760 Ω
Fault
1.1 kΩ to 1.4 kΩ
Normal*
2.1 kΩ to 4.5 kΩ
Open circuit
> 7.5 kΩ
* Including all devices and the 3.9 kΩ EOL resistor.
Intrinsically safe installation wiring
Connect the module to the addressable loop using the COM1
(negative) and COM2 (positive) inputs, as shown in Figure 2.
COM1 and COM2 are polarity sensitive.
For conventional zone output wiring for IS applications, see
Figure 4. The conventional zone output requires a 3.9 kΩ end-
of-line resistor.
Never install standard conventional detectors behind the IS
barrier.
Conventional loop impedance/loads for IS installation are
shown in the table below.
Short circuit
< 26 Ω
Fire
250 Ω to 450 Ω
Fault
680 Ω to 1 kΩ
Normal*
1.6 kΩ to 4 kΩ
Open circuit
> 7 kΩ
* Including all devices and the 3.9 kΩ EOL resistor.
Maintenance
Basic maintenance consists of a yearly visual inspection. Do
not modify internal wiring or circuitry.
The wire impedance and threshold levels should also be
checked as follows:
• Change EOL resistor to 330 Ωand check that the system
reports an alarm.
• Change EOL resistor to 0 Ωand check that the system
reports a fault.
• Change EOL resistor to open and check that the system
reports a fault.
• Restore the EOL resistor to 3.9 kΩ and check that the
system operates normally.
Specifications
Loop o
perating voltage 21 to 28 VDC
Loop c
urrent consumption
Standby
Alarm
< 15 mA
< 40 mA
Remote LED current
3.6 mA
Z
one operating voltage (in
standby
) 17.5 to 18.5 VDC
Zone
cable resistance
Standard installation
IS installation
< 40 Ω
< 26 Ω
Zone e
nd-of-line resistor 3.9 kΩ, 5%, 1/4W
IP rating
IP40
Operating environment
Operating temperature
Storage temperature
Relative humidity
−10 to +55°C
−20 to +60ºC
10 to 95% noncondensing
Weight
325 g
Dimensions
175 × 124 × 51 mm
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Regulatory information
This section provides a summary on the declared performance
according to the Construction Products Regulation
(EU) 305/2011 and Delegated Regulations (EU) 157/2014 and
(EU) 574/2014.
For detailed information, see the product Declaration of
Performance (available at firesecurityproducts.com).
EU compliance
Certification body
0370
Declaration of
Performance number
10-5106-360-4001-01
Year of first CE
marking
19
Product identification
IU2055NC
Intended use
See the product Declaration of Performance
Declared performance
See the product Declaration of Performance
Manufacturer
United Technologies Safety System Co. Ltd.
80, Changjiang East Road,
QETDZ, Qinhuangdao,
Hebei Province, China 066004
Authorized EU manufacturing representative:
UTC Fire & Security B.V.
Kelvinstraat 7, 6003 DH Weert, Netherlands
2012/19/EU (WEEE directive): Products
marked with this symbol cannot be disposed
of as unsorted municipal waste in the
European Union. For proper recycling, return
this product to your local supplier upon the
purchase of equivalent new equipment, or
dispose of it at designated collection points.
For more information see:
http://www.recyclethis.info.
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/pro
duct
-warning/ or scan the QR code:
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