5
to suitable isolating valves be incorporated between each individual item of equipment and the
system. In addition, drain cocks must be fitted to enable each individual piece of equipment to be
drained down independently from the main system.
4)
Connect a switched fused single phase mains supply at 240volt 1 phase 50hz to the terminals
in the control section of the unit (fused at 13amps).
5)
Electrical connections will be required to the fault / indication circuits as shown on the wiring
diagram, to which references should be made depending on the option to which the equipment has
been supplied.
All units incorporate a set of volt-free contacts to shut down the burner/chiller on pressure alarm, and
these should be linked into the control circuit, so as to shut down the burner/chiller in the event of an
alarm condition. It is important, however, that the supply to the EP unit is maintained under all
conditions.
Unit.
External pipe work connected to the unit should be supported so as not to stress the pipe work
connections. Any parts removed for transit must be refitted.
The above in conjunction with the drawings should enable the unit to be installed ready for
commissioning, however, if you require advice or assistance please do not hesitate to ask out
technical support staff for guidance.
If Stokvis are commissioning, please ensure that all of the electrical, water and other connections are
intact, and that power and water are available before calling us to site. This will save unnecessary
journeys, delays and expense.
Commissioning.
Before commencing the commissioning procedures detailed below, ensure that the system is full,
and has been vented by using a temporary connection.
This unit is
NOT
designed for initial system filling, due to its limited flow capacity, but a quick fill
bypass loop is available, and can be supplied (at additional cost) if required.
Ensure that the unit break tank is full to the waterline. Prime the pump by removing the plug at the
top of the pump body, and allowing water to flood through. When all air has been expelled, replace
plug.
Check that the pre-charge pressures in both the unit pressure vessel and the system expansion
vessel (s) are correct.
This check must be carried out with
NO
water in vessels.
