AK and 3K Series Installation and Service Instructions
All plumbing shall be installed by a licensed plumber
and conform with local & national codes.
Materials (locally available):
- 3/8" O.D. copper tube for the water supply to the
- 3/8" water supply shut-off valve.
- 3/8" supply valve housing and filter (optional
depending on local water conditions).
- 3/8" O.D. compression to 3/8" male NPT adapter.
- 1/2" copper sweat unions. (2)
- 1/2" copper pipe for the tank drain.
- 1/2" copper pipe and 1/2" female NPT sweat adapter
for the steam line between the generator and the
- 3/4" copper pipe, fittings, and a sweat union for
the Pressure Relief Valve drain.
- Tube DAP 100% silicone caulk.
- Rectorseal No. 5 pipe compound.
1. INSTALL WATER LINE
Input water pressure must be 138 to 690 kPa.
Run 3/8" copper tube between the nearest cold water
line and the WATER INLET fitting 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 fitting always use two
wrenches so there will be no strain on the water inlet
If the generator is mounted in a place difficult
for the home owner to access, the water
supply shut- off valve should be located where
it can be quickly accessed in an emergency.
2. INSTALL STEAM LINE
A. At the generator: Install a 1/2" male NPT sweat
adapter directly into the tank. Install a 1/2" union in
the steam line.
B. Run the 1/2" copper steam line from the generator
to the steamroom. Refer to SECTION 2: SELECT
C. The steam line should enter the steam room
12,5 mm above the floor or at least 150 mm above a
tub rim or ledge. See diagram 1.
D. At the steam room: Drill/prepare a 35 mm hole for
the steam line entry. Center the 1/2" copper steam
pipe in the 35 mm hole. See diagram 5.
- Terminate the steam line with a 1/2" NPT male
adapter. Stub the line out into the room 9,5 mm
from the finished surface.
- Secure the steam line to a structural member.
SECTION 5: PLUMBING INSTRUCTIONS
3. INSTALL STEAM HEAD INSULATOR: Apply sili-
cone caulk to the finished wall side of the steam head
insulator and screw on hand tight until it is flush with
the wall with the opening pointing down. If a hand
tight fit does not align with the opening pointing
down, use teflon tape on the steam line threads to
adjust the fit.
4. INSTALL STEAM HEAD AND ESCUTCHEON: Place
the escutcheon over the steam head insulator then
slide the steam head on until the escutcheon rests
firmly against the finished wall. Tighten the hex head
screw underneath the steam head to secure it in place
with the allen wrench provided. The steam head
should be level with its fragrance reservoir at the top.
See diagram 6.
Check all of the standard fixtures in the steam
room. All fixture penetrations must be sealed
with 100% silicon caulk to avoid moisture
damage within walls.
5. INSTALL PRESSURE RELIEF VALVE
Install the pressure relief valve into its port on the
generator. The pressure relief valve outlet must drain
in accordance with local and national codes.
6. INSTALL DRAIN VALVE
Install 1/2" NPT male sweat adapter directly into the
tank as shown in diagram 2. Install a 1/2" union. Run
a 1/2" copper drain line to a gravity flow drain. Do not
run the drain uphill. The drain must be connected in
accordance with local and national codes. See dia-
Do not connect the overpressure
device output into the steam line.
Do not connect the drain valve into
the steam line.
Do not mount outdoors.
Protect from freezing.
Unit must be located as to allow
access for service.
The generator will not operate
properly, unless it is mounted level
with the arrows pointed up.
Do not put a shut off valve in the
steam line. Avoid traps and valleys
where water could collect and cause a
steam blockage. The hot steam line
must be insulated against user
Centering the steam pipe is critical in
rooms made of plastic, acrylic, resin,
fiberglass or similar materials.
Allowing the steam pipes to touch
materials not rated for 100°C or
higher will result in damage to these
Do not install the steam head near
bench(es) or where steam may spray
or where condensation will drip on
the user as this will present a scald
The steam pipe entry and any other
entry into the steam room must be
caulked to avoid damage caused by
steam leakage into the wall.
If the steam line is in an area where the
temperature will be below 4°C or if the line
is more than 6 M long, best results can be
obtained by insulating the steam pipe.
Do not use a saddle valve or saddle fitting for
the water shut-off valve.
Flush water supply line before final hookup.