When installing a smoke and fire prevention valve, pay attention to the following:
1. Tobacco fire -proceed fire valve should be installed on the following parts of the ventilation and air -conditioning system pipeline:
(1) On the horizontal pipe section at the intersection of the vertical air duct and the horizontal air duct, the ducting valve parts of the fireproof partition;
(2) Cross the room walls and slabs of ventilation and air adjustment machine rooms. When installing the wind port or ventilation, ventilation, air -regulating machine room walls, install the side of the air outlet or the computer room partition wall and floor.
(3) When crossing the room wall and floor on both sides of the deformation seam, it should be on the room partition wall and floor on both sides of the deformed seam;
(4) When there is a mechanical smoke exhaust system in the building, the wind speed should not be greater than 20m/s after the other smoke exhaust pipelines of the system are connected;
(5) When setting a smoke exhaust fire valve on the smoke exhaust duct, it should be installed on the entrance pipe of the smoke exhaust fan, and the smoke exhaust valve should be provided in front of the valve.
2. When the smoke -proof fire prevention valve is installed in the ceiling, check door holes should be set up under the observation and operating agency, and the size should not be less than 450*450mm.
3. The smoke and fire prevention valve should not be installed above the water pipe, bridge, automatic water -spraying fire extinguishing system, etc. The net empty height should not be less than 3.5m.
4. Check the appearance design and actual operating agency of the valve before installation, and whether the action is effective.
5. Control the curved radius of the cable sleeve should not be less than 250mm, and generally not more than 3 bending.The length of the steel cable is generally 6m. If the length exceeds 6m, it should be explained when ordering.It is generally appropriate to use close -range control.
6. Before installation, the appearance check should be performed in a 250 ± 15 ° C environment, and the verticality and horizontal degree of flange, the flange of the valve body, the flange, and the appearance quality should be checked.