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This causes several problems:
1.
Reduce the heat transfer efficiency of the
heating system.
2.
Cause premature failure of Electric heaters.
3.
Water level probes will give false readings.
4.
Thermostat bulbs will sense temperature
incorrectly.
These problems are common to any manufacturer's
steamer regardless of design, but they can all be
prevented by furnishing the boiler with soft water.
Vulcan recommends the water contain less than
60ppm of "total dissolved solids" (TDS) and have a
PH factor between 7 to 8. These water properties
can be achieved by using a properly maintained
water softener.
Other chemical properties in water supplies can also
affect good steam generation and vary from within
each state and locality.
The water level probes in the boiler use ions in the
water to detect the water level. Do not use fully
demineralized or de-ionized water since it is "non
conductive" and the water level can not be detected.
NOTE: The use of strainers, or filters will not
remove minerals from the water.
Vulcan recommends that a local water treatment
specialist be consulted before the installation of any
steam generating equipment.
Steamers that operate over a long period of time
without the benefit of a water softener, which have
developed a heavy scale build up, should be
cleaned before using a water softener.
TOOLS
Standard
Standard set of hand tools.
Volt-Ohm-Meter (VOM) with AC current tester.
(Any quality VOM with a sensitivity of at least
20,000 ohms per volt can be used)
Gas leak checking equipment.
Gas pressure manometer
Temperature meter and thermocouple.
Special
CLR Treatment Kit - Used to remove
Calcium/Lime/Rust from a boiler (Contact
Vulcan Authorized Service Centers ).
Adaptor to test thermocouple closed circuit
voltages (DC) on gas models with manual
ignition (purchase locally).
VL SERIES STEAMERS - GENERAL
NOTE: Adaptors vary between manufacturers. An
example of one adaptor type is pictured below.
Water Supply
Steam Supply
Dry steam must be provided to the steamer for
suitable use. If the steam is heavy with condensate,
a Ball Float Trap must be used in the line and
plumbed in before the pressure reducing valve. To
ensure rapid heat up of heavy cold loads, the steam
supply line must be sized to maintain pressure as
outlined below.
Reducing Valve
*Potable steam is not required for regenerated models but could
be used.
Page 5 of 88
SPECIFICATIONS
Supply pressure should be
In line strainer for supply line
Supply connection
Total dissolved solids (TDS)*
Total alkalinity
Silica
Chloride
PH factor
(*17.1 ppm = 1 grain of hardness)
DIRECT STEAM
STEAMERS
(POTABLE)
Supply
15 psi (min.)
Pressure Input
Flow Rate
50 lb. per hour per
compartment
Pressure
10 psi (furnished)
Output
20-80 psig
(Not Supplied)
cold
less than 60 ppm
less than 20 ppm
less than 13 ppm
less than 30 ppm
7 to 8
REGENERATED
STEAMERS -
OLDER MODELS
(*NON-POTABLE)
15 psi (min.)
125 lb. per hour
set accordingly for good
steam generation (10-
12psi)
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