maybe someone can share some info here. i bought a kdi-16 off e bay last week for 15 bucks and it arrived today. it looks great! i was told some kd-16's have a water heater, some don't. this one does have the calrod in the sump like my kd-17 models do but it is a much small diam. calrod unit than those i am used to on kitchenaids. and there is no thermostat in the sump to signal a 180 degree temp for timer advance. i am assuming this calrod merely helps maintain water temp or am i wrong? were the kds-17's the first to use the bigger 1400 watt calrod? this one is rated at about 1200 watts. any info you have would be appreciated!!!!!!!!!