A
azam
HI , I wonder if there is someone out there who can help, i've got a Vaillant Ecotec 438 open vented Boiler , a VR65 control center and a Wireless VRT392F thermostat controls with a large Megaflow HE 250L tank. I have installed the VR65 as per Vaillants instructions, the Hot water and Heating Valves are both connected to the VR65 that is only the L, N and E, Orange and grey wirels not connected, the ebus from the VR65 and Central heating pump are connected directly to the Boiler, the receiver for the VRT392f in installed directly in the front of the boiler, So thats the setup, Everything works however the question is how to connect the VR65 Cylinder thermostat control to the Megaflow to control the hot water? There is a 2 wire connection for a cylinder thermostat in the VR65 and 3 Red wires in the connection box on the megaflow 1, 2 and 3, Which wires go to where? additionally i've been informed by megaflow that the controls from the megaflow should connect to the water valve to shut the water off incase of a thermostat probe failure , but the hot water valve wires, that is the L, N and E are connected directly to the VR65 as per Vaillants instructions! additionally the VRT392f currently does not control the water temperature, it controls the boiler and Hot water valve but I'm having to control the water temperature directly from the megaflow? theroretically i should be able to control the water temp from the VRT392F. some help on this would be nice as to the megaflow connections to the vr65 and water temp control and what should i do regarding the Megaflow safety shutoff with the hot water valve. I hope this all makes sense. Thanks
