EZ Zone/Meridian
14
Upgrade
036-21423-001 Rev. A (0602)
Optional Controllers and Accessories
In addition to the standard Zone Manager and Zone
Controllers, York offers many other controllers and ac-
cessories to enhance your new Meridian System. Op-
tional Controllers that are available for use with the
Meridian Plus system include the CV, CV-C, GPC, Op-
timal Start Scheduler, Lighting Panel Controller and
Wetbulb Module. These controllers are not available
for use with the Meridian Basic System. To utilize any
of the optional controllers you must upgrade your sys-
tem to the Meridian Plus configuration. Accessories that
are available for use with either the Meridian Plus or
Basic System include the CommLink II Communica-
tions Interface, Remote Link, Room Sensors, Round
Zone Dampers and Rectangular Zone Dampers. York
also offers Communication Cable that is color coded
and labeled for the network communications loop and
local communications loop.
Following are brief descriptions of the optional con-
trollers and accessories that are available.
CV Controller
The CV Controller provides control of single zone con-
stant volume rooftop or split system HVAC equipment.
CV controllers have four configurable relay outputs for
heating/cooling staging, a 0-10VDC output for econo-
mizer control, on board time clock for scheduling/night
setback functions and built in alarming features.
The CV Controller can be used with the Meridian Plus
System only. The CV can be programmed and moni-
tored from the either the System Manager or from a
personal computer which has the MeridianView Com-
puter front end software installed. Up to 13 CV con-
trollers can be installed on each local communications
loop of your Meridian Plus system.
CV-C Controller
The CV-C Controller is a field configurable constant
volume unit controller that provides additional features
which are not available with the standard CV control-
ler. CV-C controllers can be configured for applications
requiring CO
2
/IAQ economizer control, modulating HW
and CW control valves and dehumidification. The CV-
C relay outputs can be expanded via a plug-in expan-
sion board for use in applications requiring additional
heating/cooling staging control.
The CV-C Controller can be used with the Meridian
Plus System only. The System Manager cannot be used
to program or monitor the CV-C controller. CV-C con-
trollers require that a personal computer which has the
MeridianView computer front end software installed
be used for all programming and monitoring. Up to 13
CV-C controllers can be installed on each local com-
munications loop of your Meridian Plus system.
GPC Controller
T
he GPC (General Purpose Controller) is a very versa-
tile controller that can be used for a variety of control
applications that are outside the function of our stan-
dard HVAC unit controllers. Each GPC controller has
(5) Universal Inputs that can accept contact closures,
thermistor temperature sensors, or 4-20mA/2-10VDC
signals. The controller has (5) digital outputs for on/off
control and (1) 0-10VDC analog output to modulate a
valve or damper. These inputs and outputs can be con-
figured in a variety of ways using And/Or logic func-
tions, time schedules, setpoints, etc. to perform many
different tasks.
The GPC can be used for many applications including,
but not limited to:
• Control of Unit Heaters
• Control of Boilers
• Control of Exhaust Fans
• Monitoring of Temperature
• Monitoring of Humidity
• Monitoring of Status Contacts
The GPC Controller can be used with the Meridian Plus
System only. The System Manager cannot be used to
program or monitor the GPC controller. GPC control-
lers require that a personal computer which has the
MeridianView computer front end software installed
be used for all programming and monitoring.
