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© STULZ S.p.A. – all rights reserved EN/06.2016/i09
WSA ExplOrEr OriginAl inStructiOnS
We recommend the following good practice:
• install a water bypass to be able to carry out work at the chiller (without having to disconnect it
from the pipework)
• connect the pipe with adequate supports, so that it weight is not borne by the chiller
• install adequate anti-vibration pipe joints to avoid the transmission of structure-borne noise
• in the evaporator side, insulate the pipes of the external system, if they come into contact with
external air, to prevent the influence of heat from the ambient air as well as possible
WArning
The connection piping must be connected to the chilled water lines of the chiller free of
mechanical stress.
inFOrMAtiOn
For the dimensions and positions of the hydraulic connections, see "5.6 Dimensional
drawings" at page 52
6.6 Filling and bleeding air
Open the vent valves. See the exact location of the vent valves in the hydraulic scheme.
A standard chiller provides vent valves at the evaporator and condensers.
Check whether the stop valves in the supply line are open . Connect the pump for filling the
circuit to the provided filling point. See the exact location of the filling point in the hydraulic
scheme.
Begin filling the water circuit. As soon as liquid comes out of a vent valve for several seconds,
this can be closed.
WArning
If the planned filling of water contains glycol, connect filling hoses to the vent valves, to
catch the discharging mixture and dispose of it separately.
External
exchanger
internal
exchanger
WArning
Once the circuit is filled, the freeze
protection function is essential. Check if
the circulation pumps are supplied with
power and if they are properly connected
to the controller. Furthermore, make
sure that the valves of all pumps are set
OPEN.
