After a real fire in a sprinklered DC rowhouse or condo: who closed the valve, which heads get replaced, and how the system goes back in service

The system did its job. A pan on the stove, a space heater against a curtain, a charger on a mattress, and one or two heads opened and held the fire to the room until DC Fire and EMS arrived. That is the whole point of the system and it is also the start of a job most owners have never thought about. The valve is now closed, the heads that opened are spent, the ones nearby are cooked, and the house has a sprinkler system that does not work until someone puts it back. This article covers the first day, what gets replaced and why, where the permit line falls, and how the restoration fits with the fire and insurance work going on around it. For a head that opened with no fire, read the first 24 hours article instead.

The valve is closed, and it stays closed

The engine company that put the fire out also shut your sprinkler control valve, because an open head keeps flowing until someone stops it and the fire was already out. They may have tagged it, and in a condo they told the building. What they did not do is put the system back, because that is not their job. From that moment the house or the unit is unprotected, and in a condo so is every unit on that riser. The shutoff article covers what a closed valve means for the days in between, including the fire watch a condo association has to run on a 13R system and who has to be told. For a single family house the practical rule is that nobody sleeps there until the system is wet again or the house has working smoke alarms and a plan.

Which heads come out

The heads that opened are obvious and they are gone. A fused link or a broken bulb cannot be reset, and the head body is replaced with a matching head from the spare cabinet or the listed equivalent. The harder call is every head that did not open. Fire pushes a layer of hot gas across the ceiling of the fire room and out into the hall and the stair, and heads in that layer were heated toward their operating temperature without reaching it. A glass bulb that was heated and cooled can crack later; a solder link that softened can have crept. Soot settles on the heads in every room the smoke filled, and a soot coated head is a loaded head that the inspection standard says to replace. On a real fire we take down and look at every head in the fire room, the rooms that share a ceiling with it, and the stair, and we replace any head that shows discoloration, residue, a distorted deflector, or a bulb that is not clear.

The pipe near the fire

In most DC rowhouses the sprinkler pipe is CPVC, and CPVC that was in a fire is a judgment call with a short answer. If the pipe was above the fire room ceiling and the ceiling held, it was protected and stays. If the ceiling opened, or the pipe ran exposed through the room, or there is any discoloration, blistering, or softening along the run, that section is cut out and replaced back to a clean fitting. The manufacturers do not allow heat damaged pipe to stay in service and neither do we. Steel pipe in an older condo is inspected rather than assumed bad, but the hangers and the fittings in the fire area get a close look because the hanger straps can fail long before the pipe does. The materials article covers what each pipe tolerates.

Service work or a permit

Replacing heads with matching heads, replacing a damaged section of pipe in the same location, and refilling and testing the system is service work on an approved system. Anything that changes the layout is an alteration. The owner rebuilding the kitchen with the wall in a new place, the condo unit being reconfigured during the fire repair, the cellar being finished at the same time because the floor was open anyway, all of those move heads and go to DOB on the sprinkler permit alongside the building permit for the fire repair. The remodeling article covers where a head has to move when a room changes. Decide which job this is before the general contractor closes the ceilings, because a sprinkler alteration inspected after the drywall is up means opening it again.

Putting it back in service

1. The contractor drains the affected branch or the system, removes the open and damaged heads, and cuts out any damaged pipe.
2. New heads matching the originals in temperature, orientation, response type, and flow go in, and new pipe is solvent welded and cured for the time the manufacturer requires before pressure.
3. The system is refilled, the air is bled, and the main drain test is run at the riser to confirm supply and pressure. Repaired pipe is pressure tested before the ceiling closes.
4. The control valve is opened, the tag comes off, the alarm or monitoring is put back online, and in a condo the association and the monitoring company are told the impairment is over.
5. The spare head cabinet is restocked, because the spares just got used, and the system file gets a page describing the fire, the heads replaced, and the test result.

Insurance and the fire repair

The sprinkler restoration is part of the fire claim, not a separate project. The water from the heads is suppression water and is covered as part of the fire loss on a standard homeowner policy, and the heads, pipe, and labor to restore the system are covered the same way. Get the sprinkler contractor’s report into the claim file early, with photos of every head replaced, because adjusters who have never seen a residential system will ask why six heads were replaced for one fire. The insurance article covers the credit, and this is the moment to make sure the carrier knows the system exists. Have the sprinkler contractor walk the house again after the ceilings close to check that no head got buried, moved, or painted on the way.

Quick answers