I just installed a used VC 2560, converted to propane, direct vent, with blower. I hooked up a thermostat today and the pilot stays lit and the main burner lights and secures as it should. My problem, however, is that the blower never turns on. I have the thermostat hooked up to the top and bottom terminals on the pilot valve assembly itself. The three-way switch on the blower control is in T-stat mode. The Rheostat is set for roughly mid-range. The blower is plugged in. Any ideas on where to start? I'd like to get that blower running. It would throw the heat nicely.