How are we going to do for the water chiller HVAC system shutdown in winter ?

Here are the tips below for seasonal water chiller system shutdown in winter how to drain out the water from HVAC system.

1. Shell and Tube Condenser: Open the end cap of the water pipe.  After opening, pay attention to the end cover and screws. Install the end cover and screws before starting the next year. (Remember: Do not do this for evaporator drainage!!!)

2. Shell and Tube Evaporator: You can open the drain valve under the evaporator to drain the water. It is best to keep the drain valve normally open in winter, and turn off the water supply before turning on at the next year.

3. Pipes and pumps: Drain water at the lowest point of pipes and pumps.

4.Square type Cooling tower: Open the drain valve at the lowest part of the cooling tower  water tray to drain the chassis water. It is best to be in the normally open state during different periods.

5.End: There is a drain valve at the lowest end of the coil, and the drain valve is also opened. Leave the drain valve open during winter.

What methods should we take to avoid damages to chillers?

During the day or night period of non-use, the pump must be kept running, and the water must be drained if it is not used for a long time. In case of severe weather (the temperature is lower than -10℃), it is the best to shut down and drain the water, or add antifreeze material into to the water.