Module To Module Factory Power Wiring; Rapid De-Humidify Firmware; Direct Dual Fuel Compatible Firmware; Thermostatic Demand Stage Up On All Zones - EWC Controls Ultra-Zone UZC4 Technical Bulletin

UZC4 ADVANCED FIRMWARE AND HARDWARE FEATURES CONTINUED UZC4 ADVANCED FIRMWARE AND HARDWARE FEATURES CONTINUED

MODULE TO MODULE FACTORY POWER WIRING

The UZC4 includes Factory Power Wiring on
all expanded systems. The 24 vac power to the
expansion modules is fed through the bus
cable. The bus cable feeds power to all module
processors & thermostats. Damper Motor
terminal blocks are isolated and powered
separately. This simplifies your wiring,
reduces the chances of polarity reversal and
allows more connected dampers per zone.

DIRECT DUAL FUEL COMPATIBLE FIRMWARE

The UZC4 is fully compatible with Dual Fuel
Heat Pumps, and other Hybrid HVAC systems.
Dual Fuel kits are not required. Select staging
based on Adjustable Time Delay, an Optional
Outside Air temperature Sensor, or allow the
thermostats to control staging. The intelligent
firmware does the rest.
* 7 TO 42 MINUTE STAGE UP TIME DELAY SETTINGS
* 7 TO 42 DEGREE F. OUTSIDE AIR CHANGEOVER
* MULTI- STAGE HEAT ADJUSTABLE LIMIT CONTROL
* ELECTRONIC BYPASS DAMPER SUPPORT
* AUXILARY MULTI-FUNCTION SUPPORT RELAY
The UZC4 is the first Zone Control System to allow 4 stage thermostats to be connected to all zones
The UZC4 is capable of numerous staging sequences depending on the type of HVAC system being
controlled, the type of thermostats connected, and the programmed staging sequence you desire.
As always you can still control a multi-stage HVAC system using inexpensive single stage thermostats
and sequence the staging by on-board adjustable time delay, or by using an optional outdoor air sensor
(OAS) and sequence the staging via an outdoor air set point.
You can still control a state of the art multi-stage Heat Pump using single or two stage conventional
thermostats and sequence the staging by time delay or outside air set point.
You can choose to control most any multi-stage Heat Pump or Conventional HVAC system with OEM
multi-stage thermostats on all zones. The UZC4 can be programmed to stage up or down based on the
thermostat inputs from each zone. The UZC4 allows a level of versatility that has never before been
offered by any zoning company. You can choose to install 3 or 4 stage thermostats on the largest zones, 2
stage thermostats on medium sized zones and single stage thermostats on the small zones.
To achieve staging via thermostatic demand only; Choose (TMR) Timer setting on Dipswitch #5 Bank 1
And then set the Multi-Stage Timer setting to (0) Zero. Setting the Timer to zero disables Timed Staging
and the UZC4 will stage up or down only when the thermostat(s) demand it.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362

THERMOSTATIC DEMAND STAGE UP ON ALL ZONES

RAPID DE-HUMIDIFY FIRMWARE

The UZC4 will perform a unique de-humidify
function when a demand to de-humidify is
detected at the Auxilary Input terminal. The
UZC4 will energize the Emergency heat relay to
activate one electric strip bank at the same
time the Y1 cool is active, so long as the
demand to de-humidify is detected. This
powerful feature will rapidly de-humidify your
home, and tempers (reheats) the supply air to
prevent over-cooling. See Page 14 for details.
CO DEMAND BASED VENTILATION SUPPORT
2
The UZC4 includes support for Demand Based
Ventilation Control scenarios. Designed to
help meet or exceed local building codes and
ASHRAE ventilation standards. Simply
connect your CO
2
damper to the UZC4.
*ZONE DEMAND LIMITING FEATURE
* STATUS LED's ARE INCLUDED ON ALL MODULES
*ONE ZONE MODE SETBACK CAPABILITY
* SIMPLIFIED WIRING AND SYSTEM SETUP
* FIRE ALARM INTERFACE
E-Mail- info@ewccontrols.com
Monitor and a Fresh Air
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