Originally Posted by yvesm
Forest River uses ThermaHeat (I am familiar with Ultra Heat). I could not find the company that makes ThermaHeat heaters or any information on the wiring. Anyone out there have any info?
UltraHeat a USA made product, and the industry standard, which Forest River mostly uses, however, for whatever reason its Cardinal division uses a made in China bootleg called Thermaheat.
The assembly instructions should be the same as those found on UltraHeat, Inc. - Home
, however, its performance comes nowhere close. First, you'll need 3 Thermaheats versus 1 UltraHeat for 40 gallons, and you will be guarenteed to run into problems with the cheaper components used in the design of ThermaHeat.