Hi all,
Can someone please tell me what the opposite of a c-plan is called?
My system only has a 2 port motorised valve on the CH side, there is nothing on the HW side. The zone valve has packed in so I am thinking about converting to a S or Y plan.
Can someone please tell me what the opposite of a c-plan is called?
My system only has a 2 port motorised valve on the CH side, there is nothing on the HW side. The zone valve has packed in so I am thinking about converting to a S or Y plan.