Tag cosmo series gas fireplaces by heat

Another 41++ Gas Fireplace Wall Switch Wiring

Another 41++ Gas Fireplace Wall Switch Wiring. I was thinking of going to my local electrical supply house for some heat/temperature resistant low voltage capable wiring and trying that. Used to attach the electrical wires to the junction box. Based on the above info, it there a way to integrate this wall timer switch with this gas fireplace wiring? The new wall switch timer has white, blue and black wires.