Johnson Controls METASYS N2 Bus Manuals

Manuals and User Guides for Johnson Controls METASYS N2 Bus. We have 1 Johnson Controls METASYS N2 Bus manual available for free PDF download: Networking And Troubleshooting Manual

Johnson Controls METASYS N2 Bus Networking And Troubleshooting Manual

Johnson Controls METASYS N2 Bus Networking And Troubleshooting Manual (48 pages)

Brand: Johnson Controls | Category: Controller | Size: 0.29 MB

Table of Contents

Table of Contents
1
Introduction
3
Overview *3
3
Who Should Read this
3
Installing ASC Controllers
5
Tools Required
5
ASC Installation Steps
6
Installing the N2 Bus
11
Background Information
11
N2 Bus Installation Steps
20
Troubleshooting N2 Bus Installation
23
Overview
23
Troubleshooting Chart
24
TEST 1: Earth Grounded 24 VAC Load
25
TEST 2: Ground Loop (Isolation)
26
TEST 3: N2 Bus Polarity, Shorts, Crossed Wires, Grounds
27
TEST 4: Oscilloscope
28
Diagnostic Leds on the AHU
29
Installing Unts Used with Gas Ignition Devices
31
Metasys Installation Practices
33
Quiet Wiring Vs. Noisy Wiring
33
Using Enclosures for Ascs
33
Hard and Soft Grounding
33
Using Shielded Cable in Noisy Environments
34
Sample Installations with Shielded Cable
36
Suppression Devices
39
Summary of Installation Practices
41
Zone Bus Communications
43
Zone Bus Description
43
Cable Pro Description
44
Cable Connector Description
46

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