When we buy new device such as Vanguard Heating VN1800ITB we often through away most of the documentation but the warranty.
Very often issues with Vanguard Heating VN1800ITB begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Gas Heater Vanguard Heating VN1800ITB is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Gas Heater on our side using links below.