Installation Instructions

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Document No. 553-169

July 22, 2015

PXC Compact Unitary Equipment

Controller (UEC)

Item No. 553169. Rev. CA Page 1 of 5

Product Description

The PXC Unitary Equipment Controller (UEC) is an

MS/TP device that can be configured as a

programmable, stand-alone device when FLN

connectivity is not present. When an Insight

workstation or BACnet Web Server is connected

through a PXC Modular or Compact with MS/TP

capability, the UEC can operate as an FLN device.

Selected models also include an extended

temperature range for the control of rooftop devices.

Product Number

PXC16.3-UCM.A

PXC Unitary Equipment Controller,

16 point, BACnet MS/TP

PXC24.3-UCM.A

PXC Unitary Equipment Controller,

24 point, BACnet MS/TP

PXC16.3-

UCMR.A

PXC Unitary Equipment Controller,

16 point, BACnet MS/TP, Rooftop

Model

PXC24.3-

UCMR.A

PXC Unitary Equipment Controller,

24 point, BACnet MS/TP, Rooftop

Model

Warning/Caution Notations

WARNING

Personal injury or property damage

may occur if you do not follow a

procedure as specified.

CAUTION

Equipment damage or loss of data

may occur if you do not follow a

procedure as specified.

Required Tools and Materials

● Wire stripper/side cutter

● Small flat-blade screwdriver

● Phillips screwdriver

● Electric drill and Phillips driver bit

● Level

● Tape measure

● Digital multimeter (DMM)

● Black marker

● Masonry drill bit (to mount on concrete or

masonry)

● Four wall anchors (to mount on concrete or

masonry)

● Optional DIN rail (1.38" × 0.3" × 0.04" ((35 mm ×

7.5 mm × 1 mm)))

Included Materials

The following screws are included for mounting the

UEC without a DIN rail:

● Four No. 8-18 × 3/8” self-tapping Phillips screws

● Four No. 8-18 × 3/4” self-drilling Phillips screws

● Two No. 8-18 × 1-3/4” self-drilling Phillips screws

Expected Installation Time

20 minutes

Summary of content (5 pages)

PAGE 1
Installation Instructions Document No. 553-169 July 22, 2015 PXC Compact Unitary Equipment Controller (UEC) Product Description Required Tools and Materials The PXC Unitary Equipment Controller (UEC) is an MS/TP device that can be configured as a programmable, stand-alone device when FLN connectivity is not present. When an Insight workstation or BACnet Web Server is connected through a PXC Modular or Compact with MS/TP capability, the UEC can operate as an FLN device.
PAGE 2
Document No. 553-169 Installation Instructions July 22, 2015 Prerequisites Installation WARNING CAUTION Turn OFF AC power at the circuit breaker panel. No power wiring is connected to the field panel controller at this time. ● If mounting in an enclosure: – Enclosure is installed. – The power source is installed, as applicable. – The power is OFF. ● All necessary wiring is pulled and terminated per the layout drawing.
PAGE 3
Document No. 553-169 Installation Instructions July 22, 2015 Option 1: Mounting the Compact Series on a DIN Rail Installing the DIN Rail NOTE: Allow a minimum clearance of 3 inches (7.6 cm) around the field panel ports and connectors for terminating wires. NOTE: For longer DIN rails, use one mounting screw per running foot of DIN rail. Do the following if the DIN rail is not already installed: 1. Align and level the DIN rail on the mounting surface or enclosure backplane. 2.
PAGE 4
Document No. 553-169 Installation Instructions July 22, 2015 Figure 1: Compact 16/24 Dimensions for Installation. Page 4 of 5 Siemens Industry, Inc.
PAGE 5
Document No. 553-169 Installation Instructions July 22, 2015 Completing the Installation CAUTION If FLN is being used, do not connect the shield wire to the connector. ● ● Terminate only one end of the shield wire on the enclosure earth ground. Terminal is connected to reference wire. Protective ground terminal may be connected to earth ground. 2. If FLN connectivity is required, remove the RS485 plug and terminate the communication wiring. If running stand-alone, do not terminate the plug 3.