Ademco - 452 Water Flow Switch

No 452 WATER FLOW SWITCH devices may mounted not within a horizontal of vertical pipe where a will a hori access a gate drain mount a slow drill and all 2 hole drill and 2 2 hole pipe pipe pipe side all hole other material distance direction saddle vane enough water hole hole arrow do not vane must not bind any way small position do not overt be adjusted device water holds also necessary nor device 2 DIAMETER ClRCUtiFERENCE OF PIPE 3 4 3 3 8 a UL No 452 a No 508 Fire Alarm Control may not be wired