Active Terrain Heat Push - Vanilla-Expanded/VanillaExpandedFramework GitHub Wiki
TerrainCompProperties_HeatPush allows the terrain to push heat (can be negative)
        public float pushAmount;
        public int targetTemp = 5000;It is a comp class, so you just add it in XML in the <terrainComps> tag of the ActiveTerrain.
<terrainComps>
	<li Class="VEF.Maps.TerrainCompProperties_HeatPush">
		<pushAmount>25</pushAmount>
	</li>		
</terrainComps>