Technical Service
First commissioning
Preliminary instructions
The equipment’s first commissioning must be carried out by a qualified
engineer.
Check that:
All safety conditions have been fulfilled
The unit was appropriately fastened to support base and correctly
positioned.
All connections have been made correctly
Check that the stop valves are open.
Check that the power supply values are correct
Grounding has been done correctly.
All connections have been fastened well.
Check that the voltage values fall within the pre-set limits.
Make sure that the amount of water in the primary circuit is higher than
the required minimum of 3.5 liters/kW, for the correct operation of the
unit.
Checks during and after the first commissioning.
Check that:
That the power absorbed by the compressor is lower than maximum
power.
That the unit is operating within the suggested operating limits.
In maximun power operation (both in cold and in heat temperature)
is respected a differencetemperature between flow and return of
approximately 5K.
That the unit stops and then starts again.
The unit switch of when all utilities plant are met.
Stop for an extended period of time
Preliminary instructions
Deactivate the unit exclusively from the control panel.
I
f the appliance is kept switched off during winter, with an ambient
temperature of less than 0°C and you do not want to use glycol (for
example ethylene glycol) in the hydraulic circuit, it is recommended
that the entire system be emptied using the discharge provided
for in the installation phase and the appliance through the specific
discharge.
Operations
After deactivating the unit:
- Position the remote switch in the “off” position.
- Position the system’s main switch in the “off” position.
- Deactivate the indoor terminal units by positioning the switch of each
unit in the “off” position.
- Close the water supply taps.
- Close the hydraulic system’s stop valves.
Setting up parameter 104 to position (1) forces the circulation pump to
start.
If there is any air left in the circuit, the system does not operate cor-
rectly.
APPLIANCE COMMISSIONIMG CHECKLIST (UK only)
A commissioning checklist section can be found at the rear of the ap-
pliance installation booklet. This important document must be completed
during the installation/commissioning of your boiler. Failure to install and
commission the appliance in accordance with the manufacturers instruc-
tions will invalidate the warranty. This does not affect your statutory rights.
The parameters 100, 101 and climatic curvers have been set up
Adjustment of the circulation pump
Model 004 - 006 - 008
The circulation pump features a knob for adjusting the
head in 2 operating modes with 8 positions each.
The factory setting is in Mode with constant
pressure differential in position 8.
The deaeration function is activated after 3 seconds with
a duration of at least 10 minutes.
For any change in the factory settings please contact
Vokèra’s Technical Service.
Mode with variable pressure differential
Deaeration function
Mode with constant pressure differential
8
1
Fast blinking
2
Slow blinking
CP3
Factory setting
1
PP1
PP2
PP3
CP1
CP2
CP3
2
Modello 012 - 015
The circulation pump features an interface that allows the
head to be adjusted in 6 levels and 2 operating modes.
The factory setting is CP3.
For any change in the factory settings please contact
Vokèra’s Technical Service.
25
