| 摘要 |
A variable constant volume cooling/heating unit comprising a warm fluid delivery pipe; a cool fluid delivery pipe wherein the warm fluid deliver pipe and cool fluid deliver pipe lead to a two position three way valve, a modulating three way valve for mixing the flow of fluid, a thermostat to control the two position three way valve and the modulating three way valve, a return fluid pipe, means for pumping the fluid through a coil and means for drawing air to be conditioned over the coil. A damper controlled by the thermostat for controlling incoming outside out into the variable constant volume cooling/heating unit.
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