Specifies the temperature. Include the temperature unit of measure (K for Kelvin, F for Fahrenheit, or C for Celsius for example) when specifying this value. The software displays this property only when the Insulation Type is User Defined or Specification Driven.
Rule Driven
Specifies that a rule drives the value. This is the default option. Click to switch
to User Driven 
.
User Driven
Allows you to select a value. Click to switch to Rule Driven .
The User Driven option is not active if it is not present on the parent pipe run.