Control Panels
How to choose a panel.
| 1. Select the type of Heating & Air Conditioning System to be Zoned. | 2. Select the number of zones that will be created. | 3. Select the control feature that will control staging. | Order model series: |
|---|---|---|---|
| 1 Stage Heat, 1 Stage Cool | 2-3 Zones | N/A | NCM Series |
| 1 Stage Heat, 1 Stage Cool | 4-22 Zones | N/A | UZC Series |
| 2 Stage Heat, 1 Stage Cool | 3-9 Zones | T-stat and/or Timer/OAS | BMPlus Series |
| 2 Stage Heat, 1 Stage Cool | 4-22 Zones | T-stat and/or Timer/OAS | UZC Series |
| 2 Stage Heat, 1 Stage Cool | 2-3 Zones | T-stat and/or Timer | NCM Series |
| 2 Stage Heat, 2 Stage Cool | 4-22 Zones | T-stat and/or Timer/OAS | UZC Series |
| 2 Stage Heat, 2 Stage Cool | 3-9 Zones | T-stat and/or Timer/OAS | BMPlus Series |
| 3 Stage Heat, 2 Stage Cool | 4-22 Zones | T-stat and/or Timer/OAS | UZC Series |
| 4 Stage Heat, 2 Stage Cool | 4-22 Zones | T-stat and/or Timer/OAS | UZC Series |
The UZC Zoning System is compatible with all HVAC systems with up to 4 stages of heat and two stages of cool.
♦ 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 22 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
UZC
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 22 zones, using ZXM2 Expansion Modules.
The 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 mode inputs. 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. Damper 1 thru Damper 22 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.
Click here for the tech bulletin.
Note: The UZC3 has been superseded by the UZC4. If you still need a tech bulletin for the UZC3 please Click here.
BMPlus-3z
Unsurpassed single stage, two stage, dual fuel and heat pump compatible control panel for zoning up to nine zones.
The new BMPlus-3z series of control panels are designed for optimum performance and superior comfort. The BMPlus-3z is expandable up to nine zones using the XM-3z expansion panel..
It is also available in the following configurations: BMPlus-3z (3 Zones), BMPlus-6z (6 Zones), and BMPlus-9z (9 Zones)
BMPlus-3z
The BMPlus-3z Zone Control System delivers advanced HVAC zoning performance in a streamlined, installer-friendly package. Designed with contractors in mind, it brings together compatibility, flexibility, and reliability to meet the demands of today’s diverse residential and light commercial projects. Out of the box, the BMPlus-3z controls two or three zones, and can easily expand to six or nine zones using XM-3z expansion panels, perfect for both retrofit and new construction applications.
• Controls 2–3 zones, expandable to 6 or 9 with XM-3z expansion panel.
• Large LCD display with simple 4-button navigation and real-time system status.
• Universal thermostat compatibility, including most WiFi models.
• Works with single or multi-stage gas, oil, electric, hydronic, heat pump, and dual-fuel systems.
• Integrated safety interlock for A2L refrigerant leak sensors, wet switches, and smoke detectors.
• Multiple staging options: Stage by Weight, 50% Rule, or Time-Based.
• Fresh Air control option with adjustable outdoor air temperature limits.
• Fully compatible with EWC motorized dampers, DAPC static pressure control, and Smart Bypass Dampers
The BMPlus-3z Zone Control System delivers advanced HVAC zoning performance in a streamlined, installer-friendly package. Designed with contractors in mind, it brings together compatibility, flexibility, and reliabilityto meet the demands of today’s diverse residential and light commercial projects. Out of the box, the BMPlus-3z controls two or three zones, and can easily expand to six or nine zones using XM-3z expansion panels, perfect for both retrofit and new construction applications.
The intuitive large LCD screen guides installers through system-specific setup, hiding unused features for a streamline setup. With four simple navigation buttons, programming is quick and easy, while real-time system status, supply air temperature, and zone demand indicators help verify operation and simplify troubleshooting. Eight color-coded LEDs provide an at-a-glance view of HVAC and damper status, reducing installation time and eliminating guesswork.
Built for broad compatibility, the BMPlus-3z works with most 24V thermostats, including smart WiFi models. It supports everything from single-stage gas furnaces to 3-stage heat pumps and dual-fuel configurations, with flexible staging options, Stage by Weight, 50% Rule, or Time-Based to match any comfort and efficiency requirement. The system also includes a built-in Safety Interlock, making it easy to connect A2L refrigerant leak monitors , wet switches, or smoke detectors without complex rewiring. Configurable purge or stop modes ensure the correct safety response for the application. For improved indoor air quality, the Fresh Air feature allows controlled ventilation with high and low outdoor air temperature limits to prevent discomfort or equipment stress.
When paired with EWC’s motorized dampers, DAPC static pressure controller, or Smart Bypass Damper, the BMPlus-3z ensures balanced airflow, quiet operation, and maximum efficiency. Whether you’re upgrading from the previous BMPlus model or standardizing your inventory on a single, versatile control, the BMPlus-3z is the modern solution for dependable, future-ready zoning.
NCM Series
NCM-3z
The NCM-3z works with single stage and heat pump systems. Multiple configurations of Single Stage systems, 2 heat / 1 cool systems and 2 heat / 1 cool Heat pump systems are all compatible with heat/cool single stage thermostats and 2 heat / 1 cool Heat pump, as well as any Smart Wifi thermostats.
The four-button menu control is provided for easy set up while scrolling through the LCD Display screen. The LCD display will provide real-time “system status” feedback, such as Supply Air Temperature, System Mode of Operation, Fresh Air Cycles remaining and Status of the on-board safety interlock features.
Fresh Air option allows the NCM-3z to operate as a 2-zone system with the (3rd) third zone acting as a Fresh Air intake. The NCM-3z will calculate the amount of fresh air allowed based on “Minutes of Fresh Air per Hour” along with the Square Footage of the home, the number of occupants in the home and the size of the intake duct installed.
The NCM-3z Safety Circuit allows the installer to connect safety devices directly to the zone panel. This feature was designed with the new A2L refrigerants in mind, though this feature also works with wet switches, condensate pumps, smoke detectors, and fire alarms. If the safety device contacts open, the NCM-3z will shut down the heating or cooling demand and either turn the Indoor Fan “On” and open all dampers or turn the Indoor Fan “Off” and close all dampers.
ULTRA-TALK 3000 (UT-3000) – The Communicating Zone Control System
The one of a kind UT-3000 Zone Control System provides intelligent control of a communicating HVAC system or 24volt legacy HVAC system at a maximum of three zones using 24volt motorized dampers and any off-the-shelf 24volt thermostat or compatible communicating thermostat.
UT-3000
The UT-3000 is 100% plug and play when connected to a communicating HVAC system and network thermostats.
The UT-3000 includes features such as proportional operation, automatic equipment recognition, dual fuel functions and precise control of supply air target & limit set-points. EWC Controls® raises the bar again and sets another new standard for residential and light commercial HVAC air zoning.
Control two or three air zones with 24vac power open/close motorized dampers. Control any communicating HVAC system based on the ClimateTalk™ open protocol or any 24volt 2 heat / 1 cool gas/electric system or 2 heat / 1 cool conventional or dual fuel heat pump.
The UT-3000 is compatible with any communicating thermostat that operates on the ClimateTalk™ open protocol or with any off-the shelf single stage 24volt heat/cool thermostat or 2 heat/1 cool heat pump thermostat. The UT-3000 panel features automatic changeover from any thermostat allowing for individual zone comfort from the zoned HVAC system. The Liquid Crystal Display scrolls to show current zone thermostat demand input and HVAC system demand output.
In addition, all programming is performed at the LCD. Four buttons are provided just below the LCD screen. The buttons are used to scroll thru the menu on the LCD and make your selections. Program the UT-3000 and select the features you like. Non-volatile memory maintains your settings even after a long power failure.
In addition to the LCD, a total of 5 colored LEDs provide indication of the HVAC system status and mode of operation. A total of 3 green LEDs labeled Zone 1 thru Zone 3 are also provided to indicate which dampers are energized to open. The UT-3000 comes pre-loaded with default operating parameters for zoned HVAC systems. The default program settings free the technician from programming but also allows fine tuning of the system to optimize performance and personal preference.
The UT-3000 operates in proportional mode at all times. Multi-stage and modulating equipment will be operated in a manner that minimizes blower speed, maximizes temperature control and improves system efficiency.
Click here to view the technical bulletin. (en Español)
Distributed Air Pressure Controller
Model DAPC
The DAPC is a great solution for jobs that have no room to install a by-pass or an application where you can’t use a by-pass damper. The DAPC will monitor your HVAC system static pressure and the zone damper “open” and “close” commands from the EWC Controls zone panel. When the static is too high, the DAPC will modulate any non-calling “closed” zone dampers in order to control the static pressure. The DAPC can be customized to select any desired static pressure and can pick which zone damper(s) to open when needed. The DAPC is ready to use “out-of-the-box” and can automatically discover the system’s static pressure. The balancing of static pressure into non-calling zones, or through the system is adjustable for installer convenience.
Model XM-3z
The XM-3z is the expansion panel for the BMPlus-3z series control panels. The XM-3z will allow the original (3) three zone panel to expand 3 zones at a time. The XM-3z comes with a “plug-and-play” cable that will connect to the main zone panel.
Model ZXM-2
The advanced ZXM-2 Expansion Module allows you to easily add additional zones to the UZC4 Zone Control System.
You can gain up to 16 additional zones for a total of 20. The robust and superior design, intuitive firmware, simple setup options, and easy to understand wiring, makes the UZC4 Zoning system the Contractors dream.