How to adjust the long-term circulation of natural gas heating furnace?

How to adjust the long-term circulation of natural gas heating furnace? Just like the adjustment method of wall-hung boiler,

Adjustment method of circulating pump of wall-hung boiler;

The circulating pump is added to the wall-hung boiler and installed on the return pipe. The main purpose of increasing circulating pump is to increase water circulation and raise indoor temperature. When the ignition switch of the wall-hung boiler enters the working state, the fan is started first to form a negative pressure difference in the combustion chamber, and the wind pressure switch sends instructions to the water pump. After the water pump is started, water flow switch sends an instruction to the high-voltage discharger. After the high-voltage discharger is started, the instruction is sent to the gas proportional valve, and the gas proportional valve starts.

Boiler water circulating pump is a single-stage centrifugal pump with large flow and low lift, which is located in the boiler evaporation system and bears high temperature and high pressure to force the working medium to flow. Its structure includes three parts: pump shell, impeller, bearing and heat insulator. Boiler water circulating pump is generally used for the start-up system of forced circulation drum boiler and once-through boiler.