Guessing you've got a variable rpm water pump

Hi, I'm here to assist you in resolving issues with your heating and cooling equipment.The boiler temperature control is found in the aquastat...Inside, you will notice the adjustment wheel. No, you can operate it with the system on; however, I recommend not setting it above 200.175 is quite low...In the future, you might consider replacing it with a triple aquastat if you prefer. This will adjust the boiler temperature according to the outside temperature.If that addresses your inquiry, please click accept. As always, positive feedback and bonuses are welcomed and greatly appreciated. Thank you, and have a wonderful New Year. If that addresses your inquiry, please click accept. As always, positive feedback and bonuses are welcomed and greatly appreciated. Thank you, and have a wonderful New Year.