Two Temperatures, Valves
In many multiple installations of different temperature stays in evaporators are connected into one system. Thermostatic valves can be used when the temperature difference is not more than 5F (3C), however, in some cases the temperature differences are too large. An example of this may be a case for storage of ice cream cabinets. Two temperature, valve, then put in a warm evaporator sucdon line. This prevents pressure the warmest of evaporator below a safe environment.
Controlled evaporator(s) should not have more than 40% of the overall system load. If controlled evaporator is too large, unstable, Cycling result will be. If the controlled load more than 40%of individual capacitors should be used...
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