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Zone Panel Manual Changeover (Rev. E)

Item: EWCST2

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About This Product

Product Info


Model ST series panels are for single stage heating and cooling with manual changeover. Zone 1 is the "master" zone which controls the heating and cooling mode and also the fan operation. The ST-2 is a 2 zone panel and the ST-3 is a 3 zone panel. Zones 2 and 3 will only operate in the same mode that the zone 1 thermostat is in. Each thermostat can turn the system "on" and "off ", but only in the same mode. It is recommended the zones 2 and 3 have no switching subbases for the thermostats. The ST panels can be used with mechanical or digital programmable thermostats that are non-power stealing. Open-Close switches on the control panels near the damper terminal blocks allow for continuous air circulation. This switch controls the damper position when the heating and air conditioning system is at rest. The ST panels can be wired together to create larger zoning systems up to 6 zones.
Warning: this product contains a chemical known to the State of California to cause cancer.


Weight2.5 Pounds (lbs)
Width13 Inches (In)
Height3 Inches (In)
Country of OriginUSA
Length13 Inches (In)
Ambient Temperature Range-20°F to 160°F (-28.8°C to 71.1°C)
BrandEWC Controls
ColorClear, Green
Cycle/Hertz60 Hz
Display OptionsNo Display
Heat Pump CompatibleNo
Maximum Temperature145°F (62.7°C)
Number of HVAC Zones2
Prop 65Yes
Stages Cool1
Stages Heat1
Voltage24 VAC
Warranty OfferedYes
Zone Capability2 Zones


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