Installation Instructions

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Document No. 570-117

October 26, 2016

PRC-OAVS with Pressurization Control

by Differential Flow Reset, with Heating

by BTU Compensation — Slow

Actuation, Floating or Analog Output

Item No. 570-117. Rev. CA Page 1 of 5

Generic Controller I/O Layout. See Wiring Diagram for application specific details.

Control Applications

6761

Product Description

These instructions explain how to field install or

replace the BACnet Pressurization Room Controller

PRC.

The PRC can operate stand-alone, with a field

panel, or as part of a network.

Product Numbers

BACnet PRC-OAVS—with

Pressurization Control by

Differential Flow Reset

Application 6761

570-811PA

Offboard Air Module – two

required, order separately

550-819B

Shipping carton includes a controller assembly, a

mounting rail, and two self-tapping/drilling screws.

Accessories

Low cost temporary temperature

sensor, 10K Ω thermistor with

RJ11 (1” long), that enables space

control if the permanent room or

duct sensor is not installed (pack of

25).

540-658P25

Duct Temperature Sensor, NTC

10K Ω Type 2, 3" Probe for

Commissioning only.

QAM1030.008P50

Shipping carton includes a controller assembly, a

mounting rail, and two self-tapping/drilling screws.

CAUTION

Keep the unit in its static-proof bag

until installation.

Otherwise, you run the risk of

damage to the printed circuit board

from electrostatic discharge.

Summary of content (5 pages)

PAGE 1
Installation Instructions Document No. 570-117 October 26, 2016 PRC-OAVS with Pressurization Control by Differential Flow Reset, with Heating by BTU Compensation — Slow Actuation, Floating or Analog Output Generic Controller I/O Layout. See Wiring Diagram for application specific details. Accessories Control Applications 6761 Product Description These instructions explain how to field install or replace the BACnet Pressurization Room Controller PRC.
PAGE 2
Document No. 570-117 Installation Instructions October 26, 2016 Warning/Caution Notation WARNING Personal injury/loss of life may occur if you do not follow the procedures as specified. CAUTION Equipment damage or loss of data may occur if you do not follow the procedures as specified. 1. Secure the mounting rail in the controller’s desired location. 2. Place the ESD wrist strap on your wrist and attach it to a good earth ground. 3.
PAGE 3
Document No. 570-117 Installation Instructions October 26, 2016 CAUTION CAUTION It is important that the neutral that supplies the TEC must be earth grounded at the source of the 24 Vac power. Possible erratic equipment operation or damage if neutral is not grounded. The PRC-OAVS has two terminal blocks with terminations numbered identically (terminations 1 through 16). DO NOT get these mixed up with each other. If the PRC-OAVS is not connected as shown, it is not resistant to electrical surges.
PAGE 4
Document No. 570-117 Installation Instructions October 26, 2016 NOTE: When wiring any actuator that uses a 0 to 10V control signal and ties AC neutral to DC common, an additional wire must connect the actuator AC neutral to the DC common of the PTEC/TEC AO being used to control the actuator. NOTE: The controller’s DOs control 24 Vac loads only. The maximum rating is 12 VA for each DO.
PAGE 5
Document No. 570-117 Installation Instructions October 26, 2016 Cyber security disclaimer Products, solutions and services from Siemens include security functions to ensure the secure operation of building automation and control, fire safety, security management, and physical security systems. The security functions on these products, solutions and services are important components of a comprehensive security concept.