Service Terminal Board Diagram; Alarm Terminal Board Diagram; Power Supply Terminal Board Diagram; Connection For Twin Circulators - DAB BPH-E Serie Installations- Und Wartungsanleitungen

7.2 Service terminal board diagram

Fig. 4
The contacts are normally open.

7.3 Alarm terminal board diagram

Fig. 5

7.4 Power supply terminal board diagram

Fig. 6
The circuits connected to the
control terminal board must be
separate from the electric power
supply
insulation
insulation.
Before supplying power to the circulator ensure
that the cover of the Dialogue is perfectly
closed!

7.5 Connection for twin circulators

In the case of systems with twin circulators, the
external connections of the service terminal board
must be made in parallel between the 2 Dialogue
circulators, respecting the numbering of the
individual terminals (e.g. terminal 1 unit 1 with
terminal 1 unit 2, and so on...).

8. STARTING

All the starting operations must be
carried out with the cover of the
Dialogue closed!
Avoid running the circulator with no
water in the system!

Fill the system and bleed it before running the
circulator (Fig. 7).
and guarantee double
or reinforced
ENGLISH

The fluid in the system, as well as being at a
high temperature and pressure, may also be in
the form of steam.
OF SCALDING!

It is dangerous to touch the circulator. BEWARE
OF SCALDING!

If it should be necessary to bleed air from the
motor, slowly slacken the venting cap and let the
fluid flow out for a few seconds (Fig. 7)

It is dangerous to unscrew the cap rapidly: the
high temperature and high pressure fluid can
cause scalding.
Fig. 7

9. FUNCTIONS

9.1 Regulating modes

With the Dialogue, the circulators BPH-E – DPH-E
may be set to operate with different regulating modes
depending on the necessities of the system:

Regulation with constant differential pressure.

Regulation with constant differential pressure
depending on the temperature.

Regulation with proportional differential pressure.

Regulation with proportional differential pressure
depending on the temperature.

Regulation with constant curve.

Regulation with constant curve with analog input.
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BEWARE