Do you need to modify the upward nozzle after installing the ceiling?

It's best not to deal with this problem yourself (even if you know how to deal with it), but you can't handle the water in the fire protection system all summer. This needs to communicate with the property in summer, find people who used to do fire fighting projects and give them corresponding working hours (bargaining is possible). This is the most appropriate way to deal with them. This is also related to the question of future responsibility.

Supplementary matters:

First, if it is replaced by calcium silicate ceiling, spraying must be changed.

Secondly, the nozzle is divided into two types: upper spray and lower spray. It turned out to be an upward spray. If it is changed, the nozzle should be changed to low spray.

Third, there is no plan that will not change. Unless there is no ceiling or the original type of lattice ceiling is used.

Fourth, that man's suggestion won't work. Generally, the nozzle will be blocked by objects longer or wider than 120cm, so it is necessary to install the nozzle below the block. If more than 70% of the protection area of the sprinkler is blocked, the sprinkler should also be added.