Plumbing Instructions


All plumbing shall be installed by a licensed plumber and conform with local and national codes.

Materials (locally available):

  • 3/8” O.D. copper tube, shut off valves and compression to 3/8” male NPT adapter for the water supplies to the generators.
  • - 1/2” copper pipe and unions for the steam lines to the steam rooms and the tank drains.
  • - 3/4” copper pipe, fi ttings, and a union for the Pressure Relief Valve drain.
  • - Tube 100% silicone caulk.
  • - Pipe compound.
    Note: other materials may be required.

1. INSTALL WATER LINE See diagrams 4 and 5.
Run 3/8” copper tube between the nearest cold water line and the WATER INLET fi tting on the generator. Locate a shut-off valve near the generator. Connect this line to the generator with a 3/8” compression adapter. When tightening this fi tting always use two wrenches so there will be no strain on the water inlet valve. For better servicability, use a separate shut-off valve for each generator. See diagrams 3 and 4.

Do not put a shut-off valve in the steam line! To reduce the risk of explosion, do not interconnect steam outlets! A separate line must be provided for each steam outlet. Avoid traps and valleys where water could collect and cause a steam blockage. The hot steam must be insulated against user contact. Install the steam head so as to avoid potential user contact. Do not install the steam head near benches or where condensation will drip on the user or puddle as this will present a scald hazard. The pressure relief valve must be installed in such a manner that the risk of scalding is reduced to a minimum. Draining the pressure relief valve into the steam room may present a scald hazard.

2. INSTALL STEAM LINE See diagrams 4 and 6.
At the Generator: Install a 1/2” male NPT sweat adaptor into the generator’s steam outlet. Install a 1/2” union in the steam line near the generator. Run the 1/2” steam line from the generator to the steam room. Refer to SECTION 2: SELECT MOUNTING LOCATION. The steam line should enter the room 18” above the fl oor or at least 12” above a tub rim or ledge.

In the steam room: Drill/prepare a 1-3/8” dia. hole for the steam line entry. Center the 1/2” copper steam pipe in the 1-3/8” hole. See diagrams 7and 8. Terminate the steam line with a 1/2 NPT male adaptor. Stub the fi nished line out into the room 3/8” from the f nished surface. Secure the steam line to a structural member.

The steam pipe entry into the steam room and the steam head must be caulked to avoid damage caused by steam leakage into the wall. Centering the steam pipe is critical through walls made of plastic, acrylic, resin, fi berglass, or similar materials. Allowing the pipe to touch the materials not rated for 212°F (100°C) or higher will result in damage to these materials. If the steam line is in an area where the temperature will be below 40°F or if the line is more than 20 feet long, best results can be obtained by insulating the steam line.

4. INSTALL THE STEAM HEAD See diagrams 7, 8 and 9
Install the steam head insulator Fill in the gap between the steam pipe and the fi nished wall using 100% silicone caulk. Apply silicone to the wall side of the steam head insulator and screw the insulator onto the steam line threads, hand tight, until it is fl ush against the fi nished wall with its opening facing down. If hand tight does not result in the opening pointing down, use Tefl on tape on the steam line’s thread to adjust the fit. Mount the steam head Slide the steam head onto the insulator until it rests fi rmly against the fi nished wall. Tighten the hex head screw in the bottom of the steam head to secure it in place using the hex wrench, provided. The steam head should be level with its fragrance reservoir at the top.

See examples in diagram 10. The AT and 3T generators are provided with an electric drain valve to provide automatic draining and rinsing of the steam tank after each steam bath. This can greatly extend the life of the steam generator, particularly in areas with hard water. This valve must be installed within three feet of its generator.

  1. Install the 3” nipple (provided) into the generator’s drain outlet then mount the drain valve to this nipple with its conduit fi tting pointing away from the generator. Notes: Conduit must be used in order to ground the valve! The valve may be installed with either end towards the generator; select the orientation which provides the best routing for the valve’s wiring conduit. No drain line should have more than three (3) 90° bends (elbows or tees) between the generator and its drain valve.
  2. Use a 1/2” NPT close nipple to connect a 1/2” NPT Union onto the valve’s outlet.
  3. Run a 1/2” drain line from the valve’s union to a suitable drain according to national and local codes. This is a gravity fl ow drain so all drain lines must be sloped away from the generator towards the drain.

Drain lines may be ganged together only AFTER each individual drain valve.
The drain must be constructed of materials capable of withstanding water at 212°F (100°C) and be constructed according to local and national codes. Water at this temperature will present a scald hazard!
Do Not run the drain into a shower or steam room or other area where someone may come into contact with drain water without warning. This may present a scald hazard and may damage the shower or steam room.


Install the pressure relief valve into its port on the generator. Run a 3/4” copper pipe from the valve to an appropriate drain. Do not connect the valve to the generator’s drain line! Install the valve according to local and national codes.

7. Water Quality Requirements
The nature of a steambath generator requires testing of the feedwater to avoid potentially high concentrations of impurities which can cause a deposit or scale to form on the internal surfaces. This deposit or scale can interfere with the equipment’s proper operation and even cause premature failure. Concentration of impurities is generally controlled by treating the feedwater and/or “blowing down” the generator when it is not heating. The blow down process involves removing a portion of the tank’s water with high solid concentration and replacing it with makeup water.

Regular maintenance will help your steamer work properly for a long time. Check for leaks, loose or damaged wires, signs of corrosion and calcium build up in the tank and on the level probe. This is particularly important in areas with high calcium levels and other water quality problems. Calcium buildup can cause poor steamer performance and damage the heating elements!

To ensure proper operation, the water supply should be tested prior to operating the equipment. There are several treatment processes which can be used if you have a water quality problem. A local reliable water treatment company can recommend the appropriate treatment if required. Recommended water quality is listed below:


Hardness 10 - 30 ppm (5.1 - 1.75 gpg)
T-Alkalinity 150 - 700 ppm (8.75 - 40.8 gpg)
Silica Range 15 - 25 ppm (1.28 - 1.45 gpg)
PH (strength of alkalinity) 10.5 - 11.5