CALEFFI ThermoSetter 116140A Manuale - Pagina 6
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Function B - Automatic thermostatic disinfection
2
The 116
xx and 116
curves 1, 2, 3 and 4. When a temperature higher than about 155°F (68°C) is reached, a
by-pass passage begins to open to activate the second thermostatic cartridge (4) which
controls the thermal disinfection process, allowing flow independent of the operation of the
thermostatic balancing cartridge. This allows water flow through a special by-pass port,
opening the flow path up until the by-pass temperature is attained shown in curve 3. If the
temperature continues rising beyond this point, the flow is reduced through the by-pass port
to allow thermal balancing even during the disinfection process. When temperature reaches
closing temperature, the disinfection by-pass port (5) closes to protect the system fixtures
from the effects of excessive temperatures, as shown in curve 4.
Thermostatic disinfection
4
5
3
6
xx series operating characteristic curves for operating mode B are
G (gpm)
Temperature control
Cv
max
(2.1)
Cv
dis
(1.2)
Cv
design
(0.52)
Cv
min
(0.23)
For 1166xx series with 140°F by-pass temperature
and 150°F closing temperature.
Thermal shut-off
6
Thermal disinfection
T
set
Automatic disinfection
C
T (°F)