Schneider Electric SEZ7656E1045B Installation Guide

SEZ7656E1045B

Installation Guide for BACnet MS/TP RTU Terminal with IAQ
Control

CONTENTS

Installation 2

Location 2
Installation 2

BACnet System Overview 3
Terminal, Identification and Function 4

Wiring 4

Screw terminal arrangement and wiring 4

Typical Applications 5

Main outputs wiring 5

Configuring and Status Display Instructions 7

Status display 7

User interface 9

Schneider Electric | II-SEZ 7656E-A4.EN.12.2015.v2 December 2015

INSTALLATION

• Remove security screw on bottom of Room Controller
cover.

•

Open unit by pulling on bottom side of Room Controller (Figure 1).

• Remove wiring terminals from sticker.

• Read the FCC ID and IC label installed in the cover.

Location

1. Should not be installed on outside wall.

2. Must be installed away from any direct heat source.

3. Should not be installed near air discharge grill.

4. Should not be affected by direct sun radiation.

5. Nothing should restrict vertical air circulation to Room Controller.

Installation

1. Swing open Room Controller PCB to left by pressing PCB locking tabs

(Figure 2).

2. Pull out cables 6” out from wall. Ensure wall surface is flat and clean.

4. Insert cable in central hole of base.

5. Align base and mark location of two mounting holes on wall ensuring

proper side of base is up.

6. Install anchors in wall.

7. Insert screws in mounting holes on each side of base (Figure 2).

8. Gently swing back circuit board on base and push until tabs lock.

9. Strip each wire 1/4 inch from end.

10. Insert each wire according to wiring diagram.

11. Gently push excess wiring back into hole (Figure 3).

12. Re-Install wiring terminals in correct locations (fig. 3).

13. Re-install cover (top side first) and gently push extra wire length back into

hole in wall.

14. Install security screw.

2

Figure-1 Ope ning the Cover

•

When replacing an existing Room Controller, label the wires
before removal of the Room Controller.

• Electronic controls are static sensitive devices. Discharge
yourself properly before manipulating and installing the Room
Controller.

• A short circuit or improper wiring may permanently damage the
Room Controller or the equipment.

• All SEZ7000 series Room Controllers are designed for use
as operating controls only and are not safety devices. These
instruments have undergone rigorous tests and verification
prior to shipping to ensure proper and reliable operation in
the field. Whenever a control failure could lead to personal
injury and or loss of property, it becomes the responsibility
of the user or installer or electrical system designer to
incorporate safety devices (such as relays, flow switch, thermal
protections, etc…) and or an alarm system to protect the entire
system against such catastrophic failures. Tampering with the
devices or unintended application of the devices will result in a
void of warranty.

Figure-2 Op ening the PCB

Figure-3 Terminal Block Reinstall

Schneider Electric | II-SEZ 7656E-A4.EN.12.2015.v2 December 2015

BACNET SYSTEM OVERVIEW

Schneider Electric SEZ7260X5x45B Zone controllers are used in conjunction with the SEZ7656X1045B
roof top controllers. Combined, they are designed for operating typical; single or multistage RTU’s and
their associated local zones. For example, a typical job layout system may feature 3 RTU controllers and
a total of 31 zones. This would bring to total number of nodes (individual Com addresses) to 34. RTU 1
would have 10 zones under its command, RTU 2 would have 10 zones under its command and RTU 3
would have 11 zones under its command.

3

Typical BACnet™ Zoning System Installation