Diaphragm expansion vessel
n
The preliminary pressure for the diaphragm
expansion vessel must be adjusted individually
to the system layout, the volume of the medium
and the installation site.
n
If necessary, change the installation site. For
this, the manufacturer's authorisation is
required.
Valves for hydronic balancing
n
The calculated excess pressure in the pipe net-
work layout at the individual cold water outlets
must be adjusted with the hydronic balancing
valves.
Safety valve
n
The safety valves and their correct function
must be checked.
n
The drain line for the valves is to be checked
for function and leak tightness.
n
If necessary, change the installation site. For
this, the manufacturer's authorisation is
required.
Additional checks
General checks
n
Checking that minimum clearances are correct.
n
Checking the possibility of transferring cooling
and heating capacity via the cold or hot water
consumer (indoor unit).
Electrical checks
n
Checking electrical connections for correct
phase sequencing.
n
Function check of the cooling mode / heating
mode enable (option).
n
Function check of the enable Operation /
Standby (option).
Checking the medium cycle
n
Checking the circulation pump for freedom of
movement.
n
Checking whether all valves are open.
n
Checking the medium cycle.
n
Setting the circulation pump's nominal flow
rate.
Checking the cooling circuit
n
Checking the cooling circuit for adequate oil /
refrigerant.
n
Checking the cooling circuit for leak tightness.
n
Checking the medium cycle.
n
Setting the circulation pump's nominal flow
rate.
The units are equipped with a phase sequence
relay which prevents the operation of the con-
troller if the direction of rotation of the electric
power supply is wrong. The rotary field must be
replaced if the controller is not activated during
commissioning of the unit.
REMKO KWE
50
