Roberts Gorden NEMA 4 installation manual Introduction

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SECTION 1: INTRODUCTION

SECTION 1: INTRODUCTION

1.1 What is ROBERTS GORDON® ULTRAVAC™?

The ROBERTS GORDON® ULTRAVAC™ is a micro- processor based control package designed for modulating control of CORAYVAC® heaters based on outdoor temperatures.

This controller is capable of giving control outputs to one vacuum pump and three heating zones. The controller also features inputs which are used for indoor and outdoor signal condition monitoring.

System status and settings are viewed and altered from a PC (not supplied) running

ROBERTS GORDON® ULTRAVAC™ Software.

1.2 CORAYVAC® Design Requirements

CORAYVAC® burners shall be CRV B-6, B-8, B-9, B-10 or B-12 burners.

CORAYVAC® systems designed shall have minimum radiant pipe length and 1.5 - 2.0 feet per flow unit of tailpipe length.

-OR-

CORAYVAC® systems designed shall have recommended radiant pipe length and 1.2 - 1.5 feet per flow unit of tailpipe length. See the CORAYVAC® Design Manual (P/N 127500NA) for minimum and recommended radiant pipe length.

1.3 General Requirements

The ROBERTS GORDON® ULTRAVAC™ series of controllers are supplied pre-configured for use with ROBERTS GORDON® CORAYVAC® infrared heating equipment only. Failure to comply with the installation instructions and configuration may invalidate the ROBERTS GORDON® ULTRAVAC™ limited war- ranty. See Page 41, Section 10.

ROBERTS GORDON® ULTRAVAC™ Software requires a PC (not supplied) running Windows® 95 or higher, with a Pentium® class processor and at least 64k of RAM.

The controller, variable frequency drive, burners, pump and outside air blower must be electrically grounded in accordance with the National Electrical Code® ANSI/NFPA 70 - latest revision.

Before proceeding with the installation of the control- ler, it will be necessary to check that the following points have been considered.

1.4Check Installation Materials 1.4.1 Switchable Loads

The controller relays are rated for switching loads no greater than 3 A. The total added current load for all 8 relays must not exceed 25 A.

1.4.2 Control Wiring

Shielded cable (four twisted pairs of stranded 24 AWG minimum wire) is required for use with indoor sensors.

Shielded cable (one twisted pair of stranded 22 AWG minimum wire) is required for the outdoor air sensor, VFD signal wiring, pressure switch and wiring from controller #1 to the PC.

Shielded cable (one twisted triad of stranded 22 AWG minimum wire) is required for RS-485 communications between controllers.

1.4.3 Control Board and Sensor Power

The power supply for all sensors is from the “+32 V” terminal to be found on the board of the controller. Power for the control board is 24 V provided by the relay board.

1.4.4 Programming Details

Every controller is pre-programmed for one pump and up to three heating zones. Use a site layout drawing to identify the heating zones.

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Contents Owner InstallerPage Roberts-Gordon LLC Page Table of Figures Page Introduction Carton Contents Urvsc Ultravac Satellite Controller Inside View Urvccm Ultravac Central Controller with ModemUrvccr Ultravac Central Controller with RS-485 Converter Manpower Requirements SafetyExample Site Layout Example Site Layout Specifications Control Relay BoardController Enclosure Nema 4 Models Variable Frequency Drive VFD Enclosure Standard ModelsElectrical Variable Frequency Drive Components Factory pre-wiring shown Preparation InstallationIndoor Sensor Cable Cable Requirements 3.3.1 Line Power SupplyControl Wiring 5 RS-485 Communication Wire Between ControllersVariable Frequency Drive Requirements Variable Frequency Drive MountingOutside Air Supply Indoor Sensor PlacementCentral Controller Communication Equalization Wiring Typical External Diagrams120 BMS Enable Optional60 Hz 230 460 Pump60 Hz See Note To Satellite ControllerFor 115 V For 460 Input Input VFD VFD models Supply Input VFD model shown See NoteTCP/IP communication module CommunicationsDedicated Phone Line for Central Controller Modem + Central Controller RS-485 Converter for Central ControllerTo Controller #2 Set to onTCP/IP Communication Module Mounting Red + RJ-11 Jack Black RS-45 Jack Module power wireOhm resistor included Ethernet Cable To LANDirect Connect Order 1,2,3,4,5,6,7,8 Switch OrderController Number Values 1=ON, 0=OFFRepeater Repeater WiringVariable Frequency Drive Programming VFD Parameter Settings For Use WithRoberts Gordon Ultravac Altering VFD Parameters Parameter Factory New Number Name DefaultCommissioning the Corayvac System Setting The Corayvac End Burner VacuumEnd Vent Vacuum Approximate reading after adjustingPossible Damper Couplings’ Locations Parameter Factory New Number Name Default Setting Roberts Gordon Ultravac Controller Replacement Parts Replacement PartsDescription Part Number Variable Frequency Drive Components Diagram Variable Frequency Drive Replacement PartsVariable Frequency Drive VFD Control Board Power LED4 24V Power 1 a Fuse 3 10080122 Eprom ChipVariable Frequency Drive 25 a or 10 a Fuse Troubleshooting Flow ChartTroubleshooting Flow ChartYes control board 24 V output Yes Troubleshooting Flow ChartTroubleshoot Ends Troubleshooting Flow ChartROBERTS-GORDON will not PAY for Warranty is Void ifLimitations on Authority Representatives

NEMA 4 specifications

The Roberts Gordon NEMA 4 is a leading example of industrial heating technology, specifically designed for demanding environments. Known for its ruggedness and efficiency, it meets the needs of various industries, including manufacturing, warehousing, and food processing. The robust design ensures that it can operate efficiently in harsh conditions, making it a popular choice for facilities where moisture, dust, and other contaminants are common.

One of the standout features of the Roberts Gordon NEMA 4 is its weatherproof and dust-tight enclosure, which adheres to the NEMA 4 classification. This means that the unit can withstand water splashes and rain, making it suitable for outdoor installations or areas where water exposure is likely. The housing is constructed from durable materials that resist corrosion, ensuring longevity and reliability.

In terms of technology, the Roberts Gordon NEMA 4 utilizes advanced infrared heating, which provides direct and efficient heat transfer. This type of heating warms objects and surfaces rather than the surrounding air, allowing for faster heat-up times and enhanced energy efficiency. The units are equipped with high-output infrared emitters, which are designed to maximize radiant heat output while minimizing energy consumption.

The operational characteristics of the Roberts Gordon NEMA 4 are also noteworthy. The units are designed to be user-friendly, featuring intuitive controls that allow for easy temperature adjustments and monitoring. Furthermore, they come equipped with automatic safety features, including over-temperature protection and fail-safe shutdown mechanisms, which enhance operational safety.

Another advantage of the Roberts Gordon NEMA 4 is its versatility. It can be configured for various applications, including ceiling-mounted installations or wall-mounted setups, depending on the specific heating needs of a facility. This adaptability allows for efficient space utilization in warehouses and production areas.

The energy efficiency of the Roberts Gordon NEMA 4 translates into cost savings for businesses. By providing targeted heating where it is needed most, the units help reduce overall energy expenditures. Additionally, the longevity of the unit minimizes the frequency of replacements, contributing to long-term value.

In summary, the Roberts Gordon NEMA 4 is a highly effective industrial heating solution characterized by its robust design, advanced infrared technology, versatility, and energy efficiency. It is well-suited for challenging environments and has been embraced by industries that demand reliable and efficient heating solutions.