0.5.6p3 updated the heat mechanism, a new item is needed to make the heater emit a signal (heat detection cover plate). If you don't have it, you can ignore this item.
First type (new version 370K - suitable for coal slurry formulation)
Simple control that only needs one redstone dust and one piston, temperature around 370-380.
Second type (extreme temperature control - suitable for liquid polyethylene)
The temperatures of both devices are controlled around 765-769
Figure 1 (a redstone alloy wire on a redstone block)
Figure 2 (redstone torch and two redstone dust)
What to do if the boiler heats up slowly? Add a machine!
Ordinary heat pipes need to be connected to the top of the heater, and the alchemy pot needs to be connected to the bottom of the heat pipe.
This device can keep the alchemy pot at a temperature of 700-759. (If you think it's not enough, you can add more yourself.)
Just stick the cover here.
The third type (Magic Heater - applicable for 1400K temperature recipe)
old version
New version (Redstone Line)
New version (Redstone alloy wire)
electric heater (additional content)
The electric heater can only export heat from the top. Attach a heat transfer interface to one side of the chemical reactor and connect it with a regular heat pipe. (For alchemy cauldron, no heat transfer interface is needed; attach directly.)
You can connect freely, but it is not recommended to connect too many. If they are too dispersed, you will not be able to obtain high temperature.