Owner`s manual

4211-145 06-25-10
AK 17, 20, 30, 3K20, 3K24, 3K28 & 3K36
System Installation and Service Instructions
Page 6
1. At the Generator: Install a 1/2" male NPT
sweat adapter. Install a 1/2" sweat union in the
steam line.
2. Run the 1/2" copper steam line from the Generator
to the Steam Room. Refer to SECTION 2: SELECT
MOUNTING LOCATION.
3. The steam line should enter the steam room 18"
above the floor or at least 12" above a tub rim or ledge.
See diagram 13.
4. At the steam room: Drill/prepare a 1-3/8" hole for
the steam line entry. Center the 1/2" copper steam
pipe in the 1-3/8" hole. See diagram 12.
- Terminate the steam line with a 1/2" NPT male
adapter. Stub the line out into the room 3/8" from
the finished surface.
- Secure the steam line to a structural member.
IMPORTANT
If the steam line is in an area where the temper-
ature will be below 40 F or if the line is more than
20 feet long, best results can be obtained by
insulating the steam pipe.
DIAGRAM 10
DIAGRAM 9
SECTION 4B: INSTALL STEAM LINE
SEE DIAGRAMS 1 (PREFERRED INSTALLATION) 9 & 10
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
contact.
To reduce the risk of explosion, do
not interconnect steam outlets. A
separate steam line must be
provided for each steam outlet.
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 212° F
or higher will result in damage to
these materials.
Install the steam head to avoid
potential user contact.
Do not install the steam head near
bench(es) or where condensation
will drip on the user or puddle as
this puddling will present a scald
hazard.
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.
The pressure relief valve must be
installed in such a fashion that the
risk of scalding is reduced to a
minimum. Draining the pressure
relief valve into the Steam Room
may present a scald hazard.
WARNING