emmeti TAM-15 Manual De Instalacion Y Uso página 49

water is considered sufficiently hot for the cut-off temperature function
in heating mode.
In case this function is not wanted, set the parameter to zero.
P24: This parameter defines the threshold below which the delivery water
is considered sufficiently cold for the cut-off temperature function in
cooling mode.
In case this function is not wanted, set the parameter to 99.
P25: This parameter sets the time after which the "Dirty Filter Warning"
is shown; it can be set in the range 0..50 x 100h. As an example "10"
means that the warning will be shown after 10 x 100 = 1000 hours of
fan operation.
When set to 0 the function is disabled.
DESCRIPTION OF EXTENDED CONFIGURATION PARAMETERS
The extended installer configuration parameters are shown in table 2 and
explained below.
C01 and C02: These parameters define the thresholds for the automatic
changeover function: if the function is not used this information is not
applied.
The C01 parameter represents the lower threshold, while C02 represents
the upper threshold.
C03 and C04: These parameters set the proportional band amplitude
when in heating and in cooling mode respectively.
These paramaters can be set in the range shown in the table, yet the lower
limit could be higher, being related to the hysteresis value stored in P19.
C05 and C06: these parameters are used to set the integral time
respectively for regulation in heating mode and in cooling mode.
When set to zero no integral action is performed.
C7 and C8: respectively represent the minimum power percentage of the
heating and cooling proportioning valve.
The minimum power is the opening percentage of the proportional valve
below which the fan is kept off to avoid that the fan blows when the valve
has not yet opened the water flow.
C09: Sets the number of speeds of the fan motor used in the system.
Typically Fan motors are 3 speeds type, but this parameter allows 1 and 2
speeds motors to be managed also.
C10: Determines which fan speeds can be set with the " " button.
In certain installations it may be necessary to limit " " button function.
Table 3 shows the available combinations.
C11, C12 and C13: When the fan is controlled via the proportional output,
these parameters define the speeds associated with fixed speed settings
1, 2 and 3. The parameters are expressed in % of the fan coil maximum
speed, set in C16.
These parameters are not used if the fan is controlled by the relays.
C14: When the fan is controlled via the proportional output, this parameter
defines the minimum speed that should be maintained when the electric
heater is on in an electric heater system (P01=2 or 3). The parameter is
expressed in % of the fan coil maximum speed, set in C16.
C15 and C16: They represent the lower and upper limit of the fan's
proportional output signal. The parameters can be edited within a range of
0.0 .. 10.0 V. With these parameters the output voltage can be customized
which is useful to limit the minimum and maximum speed of the fan's
motor.
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