Schneider Electric SEZ7260X5x45B Installation Guide
SEZ7260X5x45B
Installation Guide for BACnet MS/TP Zone Controller
CONTENTS
Installation |
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Location |
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Installation |
2 |
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Typical Applications |
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Main outputs wiring |
5 |
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Wiring examples |
8 |
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CO2 Sensor wiring |
8 |
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Configuring and Status Display Instructions |
9 |
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Status display |
9 |
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User interface |
10 |
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User configuration menu |
10 |
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Occupied setpoint adjustments |
10 |
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Unoccupied and Stand-By setpoints adjustments |
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Local keypad interface |
10 |
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2
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 FCC ID and IC label installed in 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-1 Opening the Cover |
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(Figure 2). |
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2. |
Pull out cables 6” out from wall. Ensure wall surface is flat and clean. |
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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 (Figure 3).
13.Re-install cover (top side first) and gently push extra wire length back into hole in wall.
14.Install security screw.
•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 Opening the PCB
Figure-3 Terminal Block Reinstall
Schneider Electric | II-SEZ7260X-A4.EN.12.2015.v2 |
December 2015 |
3
TERMINAL, IDENTIFICATION AND FUNCTION
Wiring
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Terminal |
Terminal |
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Terminal Use |
Identification |
Identification |
Description |
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SEZ7260F |
SEZ7260C |
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4 - 24 V ~ Hot |
24V ~ Hot |
24V ~ Hot |
Power supply of controller, hot side |
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(Delivered from the RTU) |
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0V~Com |
0V~Com |
Power supply of controller, common side. |
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5 - 0 V ~ Com |
Also used as reference for the analog |
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outputs when used |
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6- On-Off Rht |
BO5 |
BO5 |
Local isolated triac reheat output when used |
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7- On-Off Rht |
BO5 |
BO5 |
Local isolated triac reheat output when used |
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8- Primary Rht |
Not used |
BO3 |
24 VAC triac reheat output (open) |
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For SEZ7260F: Local analog 0 - 10 VDC |
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9 – Primary Rht |
AO2 |
BO4 |
reheat output when used |
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For SEZ7260C: 24VAC triac reheat output |
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(close) |
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For SEZ7260F: Local VAV analog 0 - 10 |
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10 – VAV |
AO1 |
BO1 |
VDC |
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Damper |
For SEZ7260C: 24VAC triac VAV output |
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(open) |
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11 – VAV |
Not used |
BO2 |
24VAC triac reheat output (close) |
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Damper |
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12 – BI1 |
BI1 |
BI1 |
Configurable extra digital input. See |
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parameter section for more information |
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13 - A14 |
A14 |
A14 |
0-10VDC analog input for remote CO2 or |
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other sensor (airflow, etc...) |
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14 - Scom |
Scom |
Scom |
Reference input for BI 1, BI 2, UI3 and RS |
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Remote room sensor input when used. |
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15 - RS |
RS |
RS |
Input auto-detects a remote sensor and will |
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automatically by-pass the internal sensor |
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when used. |
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UI3 |
UI3 |
Non-configurable extra analog input for |
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16 – UI3 / SS |
monitoring local discharge or supply |
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temperatures over the network. |
BACnet™ Network Connections
BACnet™ Network Connections
BACnet™ Com |
Com + |
BACnet™ communication bus + connection. |
BACnet™ Com |
Com - |
BACnet™ communication bus – connection. |
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Communication bus reference terminal. |
Ref |
Ref |
• DO NOT USE FOR OTHER THAN SERVICING ISSUES |
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• DO NOT WIRE SHIELD TO THIS TERMINAL |
Schneider Electric | II-SEZ7260X-A4.EN.12.2015.v2 |
December 2015 |
4
TYPICAL APPLICATIONS
Main outputs wiring
VAV Damper Wiring |
VAV Damper and Analog Reheat Wiring |
24 V~ Hot |
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24 V~ Hot |
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24 V~ Com |
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VAV Damper |
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24 V~ Com |
Com |
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Reheat Valve or SCR |
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0-10 VDC |
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Motor |
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AO 2 |
24 VAC |
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Com |
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Com |
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VAV Damper Motor |
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0-10 VDC |
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0-10 VDC |
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AO 1 |
24 VAC |
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AO 1 |
24 VAC |
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VAV Damper Wiring |
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VAV Damper and Analog Reheat Wiring |
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24 V~ Hot |
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24 V~ Hot |
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24 V~ Com |
VAV Damper |
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24 V~ Com |
Open |
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BO 3 |
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Com |
Reheat Valve |
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Motor |
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BO 4 |
Close |
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Open |
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BO 1 |
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BO 1 |
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Com |
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Com |
VAV Damper Motor |
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Open |
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BO 2 |
Close |
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BO 2 |
Close |
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Schematic |
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Wiring |
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Settings |
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Pressure dependent VAV cooling only system |
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Analog VAV Actuator |
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Mandatory |
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RehtConf= 0 None |
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0 to 10 |
VDC |
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UI3 |
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0 V~ Com |
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24 V~ Hot |
Room Temperature Control |
AO1 |
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Minimum & Maximum Position |
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Adjusted at Controller |
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Floating VAV Actuator |
Mandatory |
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RehtConf = 0 None |
Open |
Close |
UI3
0 V~ Com 
24 V~ Hot 
BO1
Room Temperature Control BO2
Minimum & Maximum Position
Adjusted at Controller
Schneider Electric | II-SEZ7260X-A4.EN.12.2015.v2 |
December 2015 |
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