York EZ Zone - Introduction to EZ Zone Upgrade

EZ Zone/Meridian
4 Upgrade
036-21423-001 Rev. A (0602)
The York International Corporation’s EZ Zone Controls
System was first introduced in the early nineties. The
EZ Zone Controls System was designed for York, by
WattMaster Controls, as a simple zone control system
for York’s line of commercial unitary roof top and split
system HVAC units. Since its original design and in-
troduction, the York EZ Zone Control System has
changed very little.
Introduction
FAN
COOL 1
COOL 2
HEAT 1
HEAT 2
BYPASS OPEN
BYPASS CLOSE
COMMUNICATION
ALARM
A = ALL ZONES
B = EACH ZONE
C = HVAC UNIT/CLEAR
D = ALARMS
# = STEP/ENTER
*
= DECIMAL
+
+
+
+
Meridian COOL MODE
04-08-96 03:48PM FRI
OCCUPIED
NO ALARMS
2
8
5
0
A
C
B
D
1
7
4
*
3
9
6
#
YORK
The Meridian Controls System was created from the
original EZ Zone Control System concept by redesign-
ing, enhancing and expanding the original systems ca-
pabilities under the new Meridian Controls System
name.
York’s Meridian Control Systems have continued in the
York EZ Zone tradition of keeping the controls simple
to install and use while enhancing the system to make it
more applicable and in line with the needs of the cur-
rent marketplace. In addition to offering an excellent
control system for zoning applications, the Meridian
Control System has been expanded to allow control of
multiple single zone constant volume units and other
devices such as lighting, exhaust fans, and unit heaters.
Upgrading your EZ Zone system to the Meridian Con-
trols system allows you and your customer to take ad-
vantage of the many improvements that have been made
in the Meridian Controls system without having to re-
place all the EZ Zone system components that are in-
stalled on your job.
This guide is intended to provide you with simple
instructions on upgrading an existing EZ Zone system
to a Meridian Control System.
Clear Window Area
6
5
4
DEC
7
MINUS
0
CLEAR
98
1
32
MENU
Override
Communication
ENTER
ESC
Alarm
System Manager
-
Meridian Plus
05/17/00 03:38PM WED
OCCUPIED
NO ALARMS
Heating and Air Conditioning
®