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5 INSTALLATION (NON-STANDARD / LATCH ON LOW UNREACHABLE)
WARNING: This equipment should be installed, adjusted, and serviced by qualified
water industry maintenance personnel familiar with the construction and operation of
the equipment and the hazards involved. Failure to observe this precaution could result
in damage to the water network.
The installer will be required to become familiar with the use of IDT as it is used at
various parts of the installation process. (e.g. It is required in order to bleed air out of
the system, test Pegasus2 operation, and program a pressure profile).
This type of installation is intended for the following use / application:
• Typically, the latch circuit becomes activated when the target pressure is set to be
0m during that part of the day, in order to shut down the water supply to the area.
At other times, the target pressure is increased to resume water supply.
Pegasus2 responds by de-activating the latch valve and resumes pressure control
via use of the pilot and the mechanical actuator.
Installation and setup should follow a similar process as that described throughout
section 4 (and subsections), but with some differences:
5.1 MODIFICATION OF PLUMBING AND OPERATION
Non-Standard operation (and modifications to plumbing) are described in 2.12.5.2.
The Inlet and Vent ports have their use and plumbing swapped over. This must be taken
into consideration when following any illustration examples of ‘standard’ installations.
To set Pegasus2 to use this non-standard plumbing (and corresponding non-standard
internal operation of the unit) ensure the ‘System is connected to allow valve to be fully
closed’ setting is set to enabled (ticked or Yes), as shown below:
The above IDT
setting changes the
operation of the two
ports (labelled inlet
and Vent).
Be sure to swap the
connections to the
plumbing also.
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