Here the TRNSYS model and simulation results have been attached. The results needed should be temperature within 55 to 60 deg C. The blue line denotes the AVG TANK TEMP and red line shows TANK OUTLET TEMP. The red line has max temp of 48 deg C and is not falling within the required temp range.This model is for a solar assisted heat pump for hot water generation. Can anyone suggest whether a thermostat should be used and how to connect it.Thank You.