if main steam header pressure is 160psi.Will Pressure regulation at inlet of heat exchanger help to descipate more heat?

I want to input steam in one side and blowing air into the other side. The objective is condensate steam with air using a plate heat exchanger instead of an air cooled condenser. Any advice?

the exh is used to heat a swimming pool and the flow of steam is correct between the boiler and the inlet of the exchanger. Steam does nto flow through the exchanger however. Any ideas as to why this may occur?