The correct way to drain the heater

The correct way to drain the heating

The correct way to drain the heating: close the total return valve, the nearest heater from the water supply pipe to start draining one by one, open the return valve to resume heating.

Close the total return valve: single-pipe tandem heater system groups of heaters are generally not individually set up valves, in the water discharge operation before the need to close the total return valve, to prevent backflow of water, can not distinguish the effect of water discharge.

By the water supply pipe nearest to the heater to start one by one to carry out the water discharge:

(1) Preparation of water containers, drainpipes, wrenches, cones, and water-absorbing rags and other tools.

(2) Find the vent at the upper side end of the heater, and according to the different types of vent blocking, use different tools to loosen the vent plug.

(3) Block the air vent with a rag, which can be connected to the drain, and use a water container to catch the water, and be careful not to let the water spill everywhere here.

(4) When the released water becomes hot, plug the air vent, tighten it, and the water release is completed.

Open the return valve to restore heating: in accordance with the second step of the water release method, will be one by one heater for the completion of the release of water, you can open the return valve, this time the entire heating system can be normal circulation.