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5、向上喷的喷洒头有条件和可与分支干管顺序安装好。其他管道安装完后不易操作的位置也应先安装好向上喷的喷洒头。 5, upward spraying spraying head with conditions and can be installed with branch main order. After the other pipe installation has difficulty in operating position should be installed upward spraying spraying head. 6、喷洒头支管安装指吊顶型喷洒头的末端一段支管，这段管不能与分支干管同时顺序完成，要与吊顶装修同步进行。吊顶龙骨装完，根据吊顶材料厚度定出喷洒头的预留口标高，按吊顶装修图确定喷洒头的坐标，使支管预留口做到位置准确。支管管径一律为25mm，末端用25mm×15mm的异径管箍口，管箍口与吊顶装修层平，拉线安装。支管末端的弯头处100mm以内应加卡件固定，防止喷头与吊顶接触不牢，上下错动。支管装完，预留口用丝堵拧紧。准备系统试压。 6, spray head branch pipe installation refers to condole type spray head of a branch, at the end of this section of the pipe is not completed with branch main order at the same time, to a simultaneous and ceiling decoration. Ceiling keel loaded, according to the condole top material thickness set spraying head obligate mouth level, according to the ceiling decoration figure determine the coordinates of spray head, make branch reserve mouth with accurate location. Branch pipe diameter shall be 25 mm, with 25 mm * 15 mm at the end of the reducer coupling, coupling and ceiling decoration layer flat mouth, anchor installation. Branch at the end of the elbow should be within 100 mm yucca is fixed, to prevent the nozzle not firm contact with the condole top, up and down movement. Branch pipe loaded, obligate mouth with plug and tighten. For system testing. 1.5.2.5 分层或分区强度试验及管道冲洗 Strength test and pipe flushing 1.5.2.5 hierarchical or partitions 1、将需要试验的分层或分区与其他地方采用盲板隔离开来，同时用丝堵将喷嘴所安装位置临时堵上。同时在分区最不利点（最低、最高点）安装压力检测表。 1, will need to test the layered or partition with other local isolates using blind flange, at the same time with a plug nozzle on the installed position of temporary plugging. At the same time in the most unfavorable point partition installation pressure test table (the lowest and highest point). 2、向试压区域进水，在试水末端排空，同时检查其他地方的排空情况。 2, to water pressure testing area, empty in the end of the test, and check the rest of the empty. 3、当水灌满时检查系统情况、若无泄漏即升压，当升至工作压力时，应停止加压，全面检查渗漏情况，若有渗漏要即时标注