Dry Sprinkler Winterization

Dry Sprinkler System Winterization Service

As winter approaches, ensuring the proper functioning of your dry sprinkler system becomes essential to protect your property and maintain fire safety standards. We offer expert Dry Sprinkler System Winterization services to safeguard your system against freezing temperatures and potential damage. Our comprehensive winterization service includes dry sprinkler winterization, fire sprinkler winterization, sprinkler pipe winterization, dry sprinkler flushing, and sprinkler system blowout.

Draining and winterizing dry sprinkler low point and auxiliary drains is a critical maintenance task to ensure the effectiveness of fire sprinkler systems during colder months. In preparation for winter, it is essential to remove any residual water from these low points and auxiliary drains in dry sprinkler systems. By draining these points, the risk of freezing and subsequent damage to the system’s components is significantly reduced.

The process typically involves carefully opening the drains to allow water to flow out completely. This prevents water from freezing inside the pipes, which can lead to expansion and potential cracks or ruptures in the system. Properly draining these low points and auxiliary drains ensures that the sprinkler system remains functional and ready to respond to fire emergencies even in freezing temperatures.

Regular inspection and maintenance of these drainage points are crucial to the longevity and reliability of dry sprinkler systems, especially in regions prone to cold weather. Proper winterization practices help safeguard the integrity of the system, providing peace of mind for building owners and occupants alike.

What is a Dry Sprinkler System?

Dry sprinkler systems are specifically designed to reach into colder areas or places that may be subject to freezing temperatures, while effectively retaining water within a controlled environment where freezing is not a worry. While there are various types of sprinkler systems in regions prone to freezing, the most common is the dry type sprinkler valve, which is filled with air under normal conditions to prevent the piping from freezing. In the event of a fire, the dry control valve opens and floods the sprinkler piping and heads with water and extinguishes the fire.

Why Dry Sprinkler Winterization is Crucial

Sprinkler systems play a vital role in fire protection, but they can be susceptible to freezing during the winter months, especially in regions with cold climates. Proper winterization ensures your system remains fully operational and ready to respond to fire emergencies when needed.

Here’s why it’s crucial:

Prevent Freezing: Water-filled pipes in sprinkler systems can freeze, causing pipes to burst and rendering the system useless.

Avoid Costly Repairs: Frozen pipes can lead to extensive damage and costly repairs. Winterization helps you avoid these expenses.

Maintain Safety: In the event of a fire, a properly functioning sprinkler system can mean the difference between a small incident and a catastrophic event.

Compliance: Many insurance companies and local fire codes require sprinkler system winterization to maintain coverage and compliance.

Our Comprehensive Winterization Services

Our team of experienced professionals is well-equipped to provide a range of winterization services:

Dry Sprinkler Winterization: We carefully drain the water from your dry sprinkler system to prevent freezing, ensuring your system remains intact and functional.

Fire Sprinkler Winterization: Our experts prepare your fire sprinkler system for winter by taking steps to prevent freezing and maintain its effectiveness.

Sprinkler Pipe Winterization: Our team checks and insulates sprinkler pipes to prevent freezing, ensuring the integrity of your system.

Dry Sprinkler Flushing: We perform a thorough flush of your dry sprinkler system to remove any remaining water, leaving it ready for winter.

Sprinkler System Blowout: Our team uses the system’s air compressor to blow out any residual water from your sprinkler system, preventing potential freeze damage.

Don’t leave the protection of your property and safety to chance during the winter months. Contact us today to schedule our expert Dry Sprinkler System Winterization service. We’ll ensure your system is protected against the freezing temperatures of winter and ready to respond effectively in case of a fire.

If I have a “Dry” Sprinkler System, why do I need to remove water?

Even though the pipes are filled with air, water naturally accumulates inside them due to two main factors:

Condensation: The air compressor that pressurizes your system pumps in air containing humidity. As this air cools in the pipes, it turns into liquid water (condensate).
Residual Water: After mandatory annual “trip tests” where the system is flooded with water, some water inevitably remains trapped in the piping network.

Winterization removes this pooled water so it doesn’t freeze.

What is involved in the Winterization process?

The primary task is draining the Low Points (also called auxiliary drains or drum drips). Since gravity pulls water to the lowest parts of the piping grid, technicians manually empty these specific valves until only air comes out. We also check the air compressor for proper operation and ensure the system has the correct air-to-water pressure ratio to prevent false tripping.

When should Dry Sprinkler Winterization be performed?

In British Columbia, this service should be performed in the Fall (September to November), well before the first overnight freeze. Waiting until temperatures drop increases the risk of pipes freezing before a technician can get there.

What happens if I skip Dry Sprinkler Winterization?

Neglecting winterization is the leading cause of dry sprinkler system failure. The consequences include:

Burst Pipes: Frozen water expands, cracking fittings or splitting pipes.
Ice Plugs: Ice can form a blockage inside the pipe. If a fire occurs, this ice plug prevents the pressurized air from escaping, meaning the main water valve will never open to put out the fire.
False Alarms: If a pipe cracks and leaks air, the system pressure will drop. This tricks the main valve into thinking a sprinkler head has opened, causing it to flood the (broken) system with water, leading to massive water damage in your building.

How do I know if my Dry Sprinkler system has trapped water?

You often won’t know until it’s too late. Water sits inside the dark, opaque metal pipes. The only way to be sure is to have a certified technician proactively drain the low points. If you hear a gurgling sound in the pipes or notice the air compressor running more frequently than usual (short cycling), you may have excessive fluid or a leak.

Is Dry Sprinkler Winterization a one-time annual event?

While the professional Winterization Service is typically an annual appointment, NFPA 25 recommends that low-point drains be emptied after every operation and frequently during freezing weather.

Active Fire recommends: An Annual Professional Winterization in the Fall, followed by periodic checks by building staff during deep freeze weeks.

Can I drain the low points myself?

Building owners can perform this task if they are properly trained. However, Drum Drips require a specific two-valve sequence (close top, open bottom, close bottom, open top). If you open both valves at once, you will accidentally trip the system and flood your building. It is safer to have Active Fire perform the initial winterization and train your staff on the correct procedure.

Does the Air Compressor need maintenance?

Yes. The air compressor is the heart of a dry sprinkler system. If it fails, the system loses pressure and trips. During dry sprinkler winterization, we check the compressor’s oil levels, belts, and automatic cut-in/cut-out switches to ensure it can survive the winter workload.

What about sprinklers in unheated attics or parkades?

These are the most vulnerable areas. Dry sprinkler heads in these zones must be the Dry Pendent type (designed not to trap water). During our inspection, we check that the pitch (slope) of the pipes is correct so that water naturally drains back toward the low points rather than sitting in the branch lines.