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7.2 Adjusting the flow rate
7.2.1
DN 15 to 50
Type 5824 or Type 5825 Electric Actuator
Î Adjustment without actuator · See
Fig. 7-1
1. Loosen the locking screw (2.6) and turn
the set point adjuster (2.3) clockwise ()
as far as it will go to close the restriction
(2.7).
2. Determine the turns required to achieve
the desired flow rate from the adjustment
diagrams (see Table 7-1).
3. Based on a closed restriction, turn the set
point adjuster counterclockwise () to
adjust the flow rate set point.
4. Check the flow rate at the heat meter and
correct it, if necessary.
5. Once the flow rate is set as required,
lock the setting with the locking screw
(2.6).
6. Close a possibly open bypass valve
again.
7. Lead-seal the setting, if necessary.
8. For a tension-free installation, place the
actuator with retracted stem on the re-
striction connection and fasten using the
coupling nut (see 'Tightening torques' in
Annex).
Î Adjustment with actuator · See Fig. 7-1
More details on the electric actuator in
u EB 5824-1 and u EB 5824-2.
EB 3018 EN
with Type 5824 Electric Actuator
1. Retract the actuator stem (1.1) by turning
the manual adjuster (1.4) counterclock-
wise () or by applying a corresponding
control signal from the control device.
2. Loosen the locking screw (2.6) and turn
the set point adjuster (2.3) clockwise ()
as far as it will go to close the restriction
(2.7).
3. Determine the turns required to achieve
the desired flow rate from the adjustment
diagrams (see Table 7-1).
4. Based on a closed restriction, turn the set
point adjuster counterclockwise () to
adjust the flow rate set point.
5. Check the flow rate at the heat meter and
correct it, if necessary.
6. Once the flow rate is set as required,
lock the setting with the locking screw
(2.6).
7. Close a possibly open bypass valve
again.
8. Lead-seal the setting, if necessary.
with Type 5825 Electric Actuator
1. Retract the actuator stem by applying a
corresponding control signal from the
control device.
2. Loosen the locking screw (2.6) and turn
the set point adjuster (2.3) clockwise ()
as far as it will go to close the restriction
(2.7).
3. Determine the turns required to achieve
the desired flow rate from the adjustment
diagrams (see Table 7-1).
Operation
7-3
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