Residential Control Systems 001-00242 ZC2S HVAC 2-Zone Controller Set different temperatures in different areas for comfort and energy savingsThermal equalizer prevents overheating of top floor of 2-story homesWorks with standard thermostats, any heating system, and with X10 or RS232/485 thermostats for automation control IN STOCK - SHIPS TODAY FREE SHIPPING ON ORDERS OVER $199* The ZC2S two zone HVAC Control Unit allows 2 standard electronic thermostats to connect to a single heating and cooling HVAC mechanical system. It provides two independent "zones" of temperature control by controlling the mechanical system and motorized dampers in each zone. The ZC2S is for use with any residential style standard gas or electric heating HVAC system up to 5 ton capacity. The control unit supports one stage heating and one stage cooling systems. The two zones are truly independent and can be in either heating or cooling modes. The control unit features auto changeover from heating to cooling modes and gives heating calls priority.

The ZC2S operation is fully automatic and transparent to the user. Each zone thermostat provides the complete and independent control for that zone. You can think of each zone as having a separate heating/cooling system with its own thermostat. The ZC2S works with most ELECTRONIC thermostats (Honeywell, White Rogers, Lux). Use only thermostats that are either battery operated or that use both sides of the 24VAC power (they have R and C terminals) from the HVAC system 9" x 7" x 2" Reviews 1 - 10 of 25 Works like a charm. Bought the Suncourt normally open dampers and this controller opens and closes them as expected. Easy, accurate, and prompt. Everything you want when ordering online. I'll use you again.At first I had the two 24 Vac lines reversed to one of the thermostats. The stat looked to be working, but system wouldn't respond to it. Correcting that minor wiring problem made everything OK. Replaced a 25-year-old zone controller with this unit. drives my new honeywell motorized dampers, & interfaces with my ancient honeywell electronic thermostats.

Actually, I didn't need it. Found a loose connection on original unit. However, the return process was flawless, and the customer service excellent. Received a refund promptly, no hassle. Smarthome gets an A+++ Thanks! The unit arrived in two days. Provided clearer instructions for installation. Review by SUBBARAO V Review by Travis King Thanks to Zeeway for his review and note on the extra +24 wire between controller and furnace. clean out window ac unitThing works like a champ. two ton ac unit costJust put it ahead of your old tstat and let the factory controller worry about the firebox cut off. 2 hvac unitsA zone controller isn't meant to be a direct replacement for your furnace controller. Only been a few days and already seeing the difference in my home.

This unit does not have a thermistor controlled shutoff to prevent firebox overheating. Zones systems by nature cut the CFM and can cause the FAU to shut down requiring a service call reset. The Honeywell HZ311 TruZone controller is comparably priced ($142), handles 3 zones, ganged servo dampers on each with 1-45VA transformer, and has connections for normally open and normally closed. It is and extremely well designed professional unit and worked much better for our application. I highly recommend it over this product. Review by PHILIP D *How do you rate this product? 1x - Zone Controller 1x - Wiring Instructions 1x - Owners ManualA lot of times, there are rooms in your house that are always warmer or colder than others are. There can be many explanations for this. For one, heat rises, so rooms on second or third floors are often too warm. In turn, basement rooms are typically too cold. Rooms with vaulted ceilings have a difficult time retaining heat, while rooms that receive long hours of sunlight are often difficult to cool down.

These are just a few reasons, but regardless of why a room's temperature is uncomfortable, there's only one surefire way to even out your house's temperature: system zoning. System zoning is pretty simple. It involves multiple thermostats that are wired to a control panel, which operates dampers within the ductwork of your forced-air system. The thermostats constantly read the temperature of their specific zone, then open or close the dampers within the ductwork according to the thermostat's settings. Not only is system zoning helpful for houses with inconsistent room temperatures, but it's also great for heating or cooling individual bedrooms based on the desired temperature setting. If you have a usually empty guest room, just shut the door and close the damper. If used properly, system zoning can help you save money on your energy bills. According to the U.S. Department of Energy, system zoning can save homeowners up to 30 percent on a typical heating and cooling bill. Those savings can add up to quite a sum -- the Department of Energy also estimates that heating and cooling account for 40 percent of the average household's utility costs.

Because guest rooms and other seldom-used rooms don't require constant heating or cooling, system zoning allows you to save money by running temperature-controlled air to those rooms only when it is necessary. Many homeowners are hesitant or unwilling to make the transition to programmable thermostats and system zoning because of the initial cost of installation. This is an understandable concern for anyone who's not building a new home or replacing an old HVAC system, but there are other options available. Even though installing a typical zoned system is not a do-it-yourself project, the Department of Energy's Inventions and Innovation Program funded the development of a damper system that can be retrofitted to existing ductwork. The system combines RetroZone's flex damper air control inserts with an electronic controller and air pumping system. There are no heavy motors involved, so existing ductwork does not need to be altered or supported. The flex dampers, which come in circular and square duct models, fill with air to constrict or block the airflow within the duct.

They're resistant to heat, aging, moisture, airborne chemicals and ozone, and even if they're punctured, which is unlikely, most holes will not affect the performance. Flex dampers should be installed in steel or flexible ducts. The dampers can be serviced easily by gaining access through a register. Flex dampers also work with most brands of zone-control panels. If you're planning to install a retrofitted zone-control system, here's what you'll need to put on your shopping list: The number of zones your home needs will affect the way you set up the system. In a two-zone system, with the zones being fairly equal in size, each zone's ductwork must be capable of handling up to 70 percent of the total CFM (cubic feet per minute) of air produced by your HVAC system. In a three-zone system, the zones need to be as close in total area as possible. In this case, each zone's ductwork should be able to handle up to 50 percent of the total CFM. Installing a four-zone system requires a bit more work.