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ASSA ABLOY Hospitality
66 8003 016-3
4.2.2.3 Floating valve
If 'Floating valve' is
chosen as HVAC type, the
parameters shown in
Figure 36 (which shows the
default values) are
applicable.
For details about each
parameter, see
Table 7
below.
Figure 36
Parameter
Description
Max opening
Max opening
states the maximum number of seconds required
to fully open or fully close the floating valve.
Start position
The floating valve should typically move to a given position,
so that the thermostat can try to close or open to decrease or
increase the temperature.
Start position
states the number of
seconds it takes to run the thermostat to the desired position of
the floating valve.
Max runtime
There are three different values for runtime, i.e. how long the
floating valve should operate related to the difference between
measured temperature and setpoint:
Max runtime
,
Medium
runtime
and
Min runtime
. Based on a calculation of the
selected deadband and the temperature deviation from setpoint,
the thermostat chooses an applicable valve throttle.
Example 1:
If the temperature difference is 1 degree outside the
thermostat deadband that has been set up in the dialog shown
here
, the floating valve is opened/closed according to 'Medium
runtime'.
Example 2:
If the temperature difference is -3 degrees, the
thermostat will use 'Max runtime' and run the floating valve
for 16 seconds "back" to a new position 90s-16s = 74s.
Medium
runtime
Min runtime
Check interval
Check interval describes how often the regulator checks the
real temperature against the setpoint.
Table 7
