PHP A-1 Instruction Manual / Mounting
07
2.5 Usage of cooling vessels
PHP modular series devices can be used in plants with a
max. temperature of 70 °C at the point of implementation.
If the temperature at this point can exceed 70 °C, a cooling
vessel must be used.
Depending on the arrangement of the piping from system
return to the cooling vessel, a vent valve must be set at the
upper connection. This valve must be vented in course
of commissioning.
NOTE
Cooling vessels must not be insulated. The entire
expansion overflow pipe from system return to the device
must not be insulated, too.
Figure 7: Usage of a cooling vessel
NOTE
The automatic degassing feature will be disabled if a
bypass set is used.
The degassing function must be disabled using the
“device set-up”-feature.
If not, unnecessary run-time of the pump but no fault.
Figure 6: Connection via bypass set and connection to the
system return
2.4 Usage of devices without degassing
PHP modular series devices can be operated without
degassing. For this purpose the unused connections have
to be connected acc. to Figure 6. This connection can be
built via the optional accessory “bypass set” EMCB-ZB.
The connection can also be executed on site (DN 25).
To connect the PHP device to the system return you must
use only one connection (“EXPANSION OVERFLOW PIPE”).
See Chapter 3 “Hydraulic diagrams”.
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