Best placement for pipe sensor
For best results, place the sensor near the sprinkler piping in the coldest likely areas, such as riser rooms, exterior stairwells, loading docks, attics, or unheated perimeter spaces. Avoid placing it near heaters or warm air vents, and mount it where it can detect cold drafts before pipes reach freezing temperatures.
Exterior stairwells, vestibules, and entry areas
These are high-risk because exterior doors can be propped open or fail to latch. If sprinkler branch lines, standpipes, or drains run through a stairwell, this is one of the first places I would monitor.
Mechanical rooms, riser rooms, and fire pump rooms
Monitor near sprinkler risers, backflow preventers, fire pump piping, or drain piping, especially in rooms with exterior walls, louvers, vents, roll-up doors, or poor heat. A freeze here can impact much of the system.
Attics, ceiling voids and loading docks
Any sprinkler pipe above ceilings, near rooflines, over loading docks, in canopies, or along exterior walls is vulnerable. Loading docks are especially risky because overhead doors may stay open for long periods.