HWM Pegasus 2 - Page 33

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2.12.5.2 Non-standard operation (and plumbing)
There is an alternative way to plumb a Pegasus2 (set for modified operation) into a
PRV installation, an example of which is illustrated below:
Note: The Pegasus2 Vent and Inlet ports are re-purposed by swapping over their
functions and plumbing. This also requires a change to the electronic
configuration of the unit’s function for solenoids S1 and S2 (using IDT).
To set Pegasus2 to use this non-standard plumbing (and operation) ensure the ‘System
is connected to allow valve to be fully closed’ setting is enabled (ticked or Yes), as shown
below:
There will be a warning
when setting this; Only
proceed if this irregular
setup is the desired
installation type and
use of the Pegasus2.
Once the settings have been saved to Pegasus2 it changes internal operation
(re-purposes the ‘vent’ and ‘inlet’ ports), making it compatible with the non-standard
plumbing.
Re-purposed
as “Inlet”
Re-purposed
as “Vent”
Latch
(valve)
‘Closed’
(non-activated)
(Pegasus2 using pilot valve and actuator)