Up on the first floor each room has two knobs. As you can see the red knob on the left and the white on the right. I believe each room has a flow and return knob, but how exactly does the effect the warmth in the room? And does lefty loosy open or shut the valves? It seems the left one on each room is spring loaded, meaning righty – righty is actually open.
Is that right?
Problem is, each room is very cold.
by NahButThanksAnyway