The UZC Zoning System
- 4 stage heat and 2 stage cool
- Automatic changeover from any zone
- Fan control from any zone
- Use virtually any four wire or multi-stage thermostat
- Controls up to 20 zones
- LED display for complete system readout
- Fire alarm interlock feature
- Fixed opposing mode timer
- Integrated supply and return air sensor to protect the equipment
- Adjustable timer for second, third, and fourth stage heat
and cool operations
- Adjustable fan purge timer
- 50% rule
- Demand based ventilation feature
Compatible with all HVAC systems with up to
4 stages of heat and two stages of cool.
The main panel is a 4 zone configuration and
is expanded 2 zones at a time. EWC will package the UZC in a 6, 8, or
10 zone configuration. For larger systems consult the factory.
The UZC4 Universal Zone Control System allows
you to easily upgrade an inefficient single zone HVAC system, into an
Automated, Multi-zone, Energy saving, Comfort producing, Safety Minded,
HVAC system. With Superior design, Intuitive firmware, Building Code
Compliant support, Simple setup options, and Easy to understand wiring,
the UZC4 Zoning system is the Designer/Contractors dream. Combined with
Patented EWC motorized dampers and practically any Off-the-shelf Conventional
or Heat Pump style Thermostats, EWC has set a New Industry Standard
in Large Residential and Commercial HVAC Air Zoning Systems.
The main module controls four air zones using
24 vac motorized air dampers and may be expanded up to 20 zones, using
ZXM2 Expansion Modules
UZC4 will Control 2, 3 & 4 stage Conventional, GeoThermal or Dual Fuel
Heat pumps, without the need for dual fuel kits. Also single or multi-stage
Gas, Oil, & Hydronic HVAC systems, with single or two stage cooling
and Constant or Variable speed fan systems. It is compatible with most
off the shelf 1 or 2 stage Conventional Heat/Cool or Heat Pump Thermostats.
All Mechanical, Digital/Electronic, Dual Mode, and Internet Compatible
Thermostats that operate on 24vac. Battery powered or Power robbing
thermostats that draw less than 20 ma of current are also accepted.
Zone 1 will accept One Zone Mode, Carbon Dioxide Safety and Auxiliary/Dehumidify
The UZC4 Zone system features automatic changeover
from any thermostat allowing for individual zone comfort from the HVAC
system. The STATUS LED pulses as a steady heart beat to indicate active
Microprocessor status. On board LED’s will illuminate to indicate system
status, HVAC system mode, and active / inactive zone identification.
See page 21 For details. Damper 1 thru Damper 20 LEDs will indicate
which zone dampers are demanded to energize Open or Closed. All modules
operate on 24vac power supplied from a separate transformer. A single
40va transformer can power up to 4 zones, with a total of 8 Genuine
EWC ND or URD dampers directly connected.
The UZC has the ability to inhibit the second,
third, and fourth stages of heating during mild outdoor temperatures.
The UZC can also inhibit second, third, and fourth stages of heating
if less than half of the total number of zones are activated.
The UZC4 has too many options and features
to list here. Please view our tech bulletin for details.
Note: The UZC3 has been superseded by the UZC4.
If you still need a tech bulletin for the UZC3 please
format, approx. 5.4 MB)