Auto-Zone Control Systems EZ-Zone to Auto-Zone Upgrade Guide (Version 01C) - Manual (Page 8)

EZ Zone/Auto-Zone
8 Upgrade
Example #1:
Your project has a single EZ Zone Master Panel and
it’s associated Zone Controllers. This is a typical EZ
Zone system. The upgrade will essentially convert this
to an Auto-Zone Basic System. Please see the required
upgrade components to be ordered in the list below.
To upgrade your existing EZ Zone System to the Auto-
Zone Basic System the following procedure will be re-
quired.
Warning: All removal and installation procedures
must be done with the power to the controllers
turned off. Failure to do so can cause severe dam-
age to the controller boards.
1) All power and input/output wiring will need to be
disconnected from the board. Remove the enclosure
cover and disconnect the keypad & display cable by
unplugging the cable connector at the board connec-
tion.
2) The new Return Air Sensor should be installed in
the return air stream in a location upstream of the point
that the bypass duct connects to the return duct.
3) Install the new Outdoor Air Sensor in a location on
the exterior of the building that provides shade and pro-
tection from the weather. See the mounting instructions
included with the sensor for detailed mounting instruc-
tions.
4) Remove the existing EZ Zone Master Controller
Board from the EZ Zone enclosure. This will require
the removal of 4 screws securing the board to the en-
closure base.
5) Install the new Zone Manager board onto the exist-
ing enclosure base. The new board installation requires
6 plastic standoffs be inserted between the back of the
new board and the existing standoffs. Secure the board
to 4 of the threaded standoffs (one in each corner of the
board) with the mounting screws provided.
6) Connect the input, output and power wiring per the
Auto-Zone Basic wiring diagram (See Figure 2 on page
17). Connect the keypad display connector of the exist-
ing EZ Zone enclosure cover to the new Auto-Zone Zone
Manager board and secure the existing enclosure cover
to the enclosure base with the existing screws.
7) Remove and replace each EPROM on all the exist-
ing EZ-Zone Zone Controllers. See Figures 16 & 17 on
pages 28 & 29 for detailed EPROM Replacement in-
formation.
To Upgrade To The AZ Basic System Order the Following:
(1) (OE751) EZ Zone to Auto-Zone Basic Upgrade Kit
(Includes: Zone Manager Board w/ Mounting Screws, Plastic Standoff Kit for Zone Manager,
Return Air Sensor, Upgrade Label, Installation Instructions.
(1) (OE250) Outside Air Sensor
(X) (OE752) EPROM (Replaces EZ Zone, Zone Controller EPROM) (One Required Per Controller)
Note: When ordering be sure to specify Fahrenheit or Celsius operation for your system
For optional components list and information see pages 14 & 15 of this manual.