How often should you drain a steam generator?

When it comes to draining a steam generator, it is vital to follow specific procedures to ensure safety and functionality. The Thermasol Pro Series generator features a drain pan designed for this purpose. Initially, my contractor intended to connect the drain from the steam generator to that of a nearby tub. While this seemed acceptable, I discovered that during a power failure, a steam generator could release superheated water. At temperatures exceeding 200 degrees, this water may be too hot for the tub's plastic drain. However, Thermasol's Pro generators with Auto Powerflush might operate differently, making this information somewhat less relevant.

In my search for proper drain placement for steam generators, I came across a technical discussion about trap considerations. Unfortunately, it was complex enough that I couldn't fully comprehend it. What considerations regarding traps should be made?

Thermasol's drain instructions provide minimal guidance: Plumb the 3/4" drain connection on the pan to an approved drain. A drain pan must be installed with all generator installations. All plumbing shall be performed by a qualified licensed plumber and adhere to applicable national and local codes.

Interestingly, despite these directives and the presence of a drain in the pan, a Thermasol video claims that the generator does not actually need a drain.

Additionally, I encountered information suggesting that draining the pan into a bucket could be a feasible option, depending on the volume of discharged water. From what I gathered in the Thermasol video, this generator flushes water back through the steam head instead of directly draining from the generator, leaving me uncertain about when the drain pan would actually receive any water.

To summarize, considering the unique operation of the Thermasol generator, is it acceptable to drain the pan into the tub's drain? Are there any trap considerations? Is draining into a bucket an option?

Thank you in advance for the advice!

Regular maintenance of your steam shower is crucial for prolonging its lifespan, allowing you to enjoy the health benefits of steam for years. This can be achieved with consistent attention to your steam generator unit. Here are the top three maintenance tips:

1. Install an Autoflush System

Flushing your steam room generator after each use is the best method to ensure years of reliable enjoyment.

If flushing doesn't occur routinely, minerals in your water can crystallize, reducing efficiency. They can create a barrier from the heat source, compelling your generator to work harder and consume more energy to reach the desired temperature.

MrSteam's AutoFlush system automatically flushes the generator of mineral buildup two hours after every steam bath cycle, detoxifying your generator after every use.

This system is easy to install and performs the cleaning for you. Once the AutoFlush valve opens, it drains all the water from the generator.

The best part: Having AutoFlush connected to your steam bath system guarantees clean, fresh water every time you start the controls.

2. Add a Water Softener System

Depending on your location, hard water can pose a significant issue.

Hard water is characterized by high concentrations of mineral deposits in incoming water. It leads to soap residue on your skin and hair, making it feel "squeaky" clean. Conversely, overly soft water can leave your skin feeling slippery, as if soap isn't rinsed off completely.

Mineral deposits from hard water lead to scale buildup in your steam bath generator over time, diminishing its lifespan. Residents of arid states like New Mexico or Arizona are particularly impacted by hard water and must maintain their generators diligently.

The AutoFlush system minimizes mineral buildup, while a water softener ensures that these deposits do not accumulate. Together, they maximize the longevity of your steam shower system.

3. Perform Manual Cleaning Every Few Years

We recommend hiring a plumber or an authorized service provider for manual descaling of the generator every few years. Follow the guide below for cleaning instructions.

Descaling the MrSteam Generator Unit:

1. Ensure power to the steam unit is off at the main breaker.
2. Drain all water from the steam unit. An installed AutoFlush should drain automatically once the power is cut. If the unit is clogged with calcium, it may require assistance to drain completely. Have towels or a bucket on hand. For units without AutoFlush, place a bucket under the drain ball valve, open the valve, and drain all water. If no water flows, use a long screwdriver to dislodge the calcium buildup.
3. Once drained, remove the access door located on the left side of the steam generator.
4. Disconnect all blue wires from the heating element posts (7/16 nut driver) and move them aside. The MS90-MS400 models only have 2 blue wires; MSSUPER1-SUPER6 has 4 wires.
5. Using a 3/8 nut driver, remove all six nuts around the element flange and take out the element from the tank.
6. Carefully scrape away all calcium buildup using a crowbar or bent copper pipe, ensuring to clear debris from the tank's walls and the welded "C" channel on the right side. A shop vacuum can be helpful to remove smaller debris.
7. Install a new silicone gasket on the tank.
8. Reinsert the new element, ensuring the arrow on the flange faces upward. Bolt it down in a star pattern, torsioning to 22 ft. lb.
9. Check the nuts on the element posts for tightness (avoid over-tightening). Reattach the blue wires.
10. Install the access door on the left side of the unit.
11. Remove and replace the liquid level probe (similar to a spark plug) using a 13/16 socket.
12. When replacing the probe, apply Teflon tape on the threads for a secure fit. Avoid over-tightening to prevent damaging the ceramic piece. Reconnect the purple wire to the new probe.
13. Turn the power back on at the main breaker.
14. Turn on the steam unit control; steam should commence within 5-7 minutes.

Refer to the included image for additional guidance.

By observing these maintenance recommendations, you will keep your steam generator operating effectively, ensuring fresh and clean steam showers whenever needed.

To learn more, please visit our website at Electric Steam Boiler.

• See How-To Videos for Steam Generators, Steam Showers, and Towel Warmers.