That could happen in that case, but reading into what the OP wrote its as if he runs one and it runs hot cold hot cold and not both at the same time. Gotta mind that you'll only get X amount l hot our your combi at once and if you have something that has multiple draw offs at one time you need a tank.
Thanks. If you can find my post previously it may explain our situation - or maybe not! Hard to explain without being here. I have hot, cold, warming and hot for the reasons I tried to explain. I’m just hoping it’s nothing costly!
That could happen in that case, but reading into what the OP wrote its as if he runs one and it runs hot cold hot cold and not both at the same time. Gotta mind that you'll only get X amount l hot our your combi at once and if you have something that has multiple draw offs at one time you need a tank.