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steam
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C U S E R I E S Installation, Operating & Maintenance Manual
10
Steam Line
1
. The steam solenoid valve should be plumbed as close as
practical to the steam room using only brass pipe or copper
tubing but must remain accessible for service or replacement.
The steam solenoid must be plumbed horizontally.
2. Pitch the steam line a minimum of 1/4”per linear foot of run,
towards the steam outlet on the generator, avoid valleys and
trapping of condensate.
3. Fully insulate steam lines with suitably rated high temperature
insulation.
5. Provide unions as required to facilitate installation and
disconnection of piping.
Drain
In accordance with Code requirements, provide a drain line
connection from the steambath generator drain valve(s). If an
Auto Blowdown is used, the drain line must be connected to
the automatic blowdown valve. Refer to National and local
plumbing Codes for drain requirements including receptor,
trap, vent requirements and drain lines.
Safety Valve
Where permitted by Code,
provide a connection for safety
valve discharge.
DO NOT connect a shut off valve
or plug at the safety valve outlet.
DO NOT reduce outlet size of safety valve discharge.
INSTALLATION
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All plumbing shall be performed by a qualified
licensed plumber and in accordance with
applicable National and local Codes.
Water Supply
1. Connect to hot or cold water line. A hot water
line is preferable, however incoming hot water
should not exceed 160°F
IMPORTANT: The low temperature setting on
many hot water heaters provides 120°F water
2. Provide a service shut off valve and water-line
strainer in the water supply line upstream to
the steambath generator
3. Flush the inlet water line thoroughly
before making connection to the steam-bath
generator.
4. Incoming water supply should be at least 25
psig and is not to exceed 100 psig.
5. Install a back flow preventor as required
by Code.
6. Provide anti-water hammer device as required
in accordance with Code.
7. Provide unions as required to facilitate installa-
tion and disconnection of piping.
8. Recheck all factory and field plumbing connec-
tions for tightness.
WATER QUALITY INFORMATION
For optimum results, the feedwater supply should
be tested prior to initial startup. If the mineral con-
tent exceeds the following recommended limits,
various external treatment processes may be used
to correct the problem.
NOTE: An analysis of the on-site boiler feedwater
must be made by a recognized and reliable water
treatment company to ascertain the existing condi-
tion and treatment required.
Recommended Feedwater Quality
Hardness, ppm 8 – 85 (~0.5 – 5 gpg)
P-Alkalinity, ppm 85 – 410 (~5 – 24 gpg)
T. Alkalinity, ppm 200 – 500 (~7 – 0 gpg)
pH (strength of alkalinity) 8.0 – 11.4
Blowdown boiler at least a once a day. If boiler
water or feed-water are outside the above limits, a
more frequent blowdown is required.
Recommended Limits Within a Boiler
Total Dissolved Solids, ppm 3500 Sulfite (SO3), ppm 25 – 50
Total Alkalinity, ppm 850 Phosphate, ppm 30 – 60
Suspended solids, ppm 300 P-Alkalinity as CaCO3, ppm 900
Silica (SiO2), ppm 125 Iron, ppm 2
Water quality can affect efficiency or result in boiler damage if neg-
lected. Boiler feedwater contains impurities in solution and suspen-
sion. These impurities concentrate in the boiler. The concentration
of these impurities increases as more feedwater is introduced into
the boiler and steam is produced. If the suspended solids are
allowed to concentrate beyond certain limits, a deposit or “scale”
will form on the boiler internal surfaces. This deposit can interfere
with the proper boiler operation and cause boiler failure.
The concentration of these impurities is generally controlled by the
feedwater quality and by blowdown. Blowdown refers to removing
a portion of the boiler water with high solids concentration and
replacing it with makeup water of a lower concentration.
WARNING
!
PI P E S I ZE G UID E
Steam Outlet: 1" or 1
1
⁄
2
Steam Solenoid Valve:
3
⁄
4
"
Steam Head:
3
⁄
4
"
Drain Outlet: 1"
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