Samson Trovis 5475-2 - Page 43

8Priority for
drinking water
control circuit
(See description of
system diagrams in
chapter 5)
OFF Only
4, 5, 6
FB 8 = ON allows you to select priority for
drinking water using set-back operation (Ab)
or priority for drinking water through reverse
control (In). Then enter time span 2 to 10 min
(default: 10 min) before priority operation
should respond
9 Parallel pump
operation
(See description of
system diagrams in
chapter 5)
OFF Only
2 + 3
FB 9 = ON allows you only in Anl 2 to select a
parallel pump operation (PU) or operation with a
changeover valve (US). The setting "PU" in Anl 2
or FB 9 = ON in Anl 3 requires you to enter data
for:
Time span 2 to 10 min (default: 10 min)
before parallel operation should be canceled.
Finally you must determine whether the
operating phases in which parallel operation is
not possible should take place with or without
intermediate heating. Option: "20" or " "
With FB 9 = ON "US" and with FB 9 = OFF you
must first determine the parameters concerning
intermediate heating:
"20" activates it after 20 min,
" " means no intermediate heating takes
place.
10 3-point stepping
control of the
heating circuit,
control parameter
ON The heating circuit functions as a three-point
stepping control loop when FB 10 = ON. Then
enter data for:
Kp = 0.1...50.0 (default: 2.0),
Tn = 1...999 sec (default: 200 ),
Ty = 15, 30, 45, ..., 240 sec (default: 90 s),
Pump lag time = Ty, 2 x Ty, 3 x Ty, up to
10 x Ty (default: 180 sec)
The heating circuit functions as an on/off control
loop when FB 10 = OFF.
Then enter differential gap =
1 to 30 °C (default: 5 °C).
11 Limitation of
system deviation
for OPEN signal
heating circuit (in
Sys. 3 and 3 also
drinking water
heating)
OFF FB 11 can only be activated when FB 10 = ON.
If FB 10 = OFF is selected, FB 11 is automatically
deactivated and cannot be activated.
The limitation of the system deviation to
2...10 °C is determined when FB 11 = ON
(default: 2 °C)
12 Limitation of
system deviation
for OPEN signal
(drink. water circuit)
OFF Only
4, 5, 6
The limitation of the system deviation to
2...10 °C is determined when FB 12 = ON
(default: 2 °C)
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