Chilled water equipment can have varying water flows, but a reasonable rule of thumb would be 2.5 GPM per ton. Under typical operating conditions, such as 72 degrees with 45 degree entering water temperature (EWT), this will yield a water temperature differential of about 10 degrees (LWT equals 55 degrees) For instance, model DACU 1834 is a nominal 18 ton unit so a water flow of 2.5 x 18 equals 45 GPM, can be calculated. What is the factory setting of the thermal expansion valve (TXV)? The factory setting for the TXV valve is the mid-range of the valve adjustment stem. The table below shows the settings per valve model. The model number is stamped on the valve body, or in some cases labeled on the top. What is the anticipated difference in temperature from water-in and water-out for a chilled water unit? The typical differential should be in the range of 10 to 12 degrees. What is the anticipated difference in temperature from water-in and water-out for a water-cooled unit? The temperat