14 - START-UP
14.1 - Preliminary checks
Never be tempted to start the heat pump without reading fully, and
understanding, the operating instructions and without having
carried out the following pre-start checks:
• Check the chilled water circulation pumps, air handling units
and all other equipment connected to the evaporator.
• Refer to the manufacturer's instructions.
• For units without hydraulic module, the water pump overheat
protection device must be connected in series with the pump
contactor power supply.
• Refer to the wiring diagram supplied with the unit.
• Ensure that there are no refrigerant leaks.
• Confirm that all pipe securing bands are tight.
• Confirm that the electrical connections are secure.
14.2 - Actual start-up
IMPORTANT:
• Commissioning and start-up of the heat pump must be
supervised by a qualified refrigeration engineer.
• Start-up and operating tests must be carried out with
a thermal load applied and water circulating in the water
heat exchanger.
• All set point adjustments and control tests must be
carried out before the unit is started up.
• Please refer to the 30RB/30RQ Touch Pilot Junior
control manual.
The unit should be started up in Local ON mode.
Ensure that all safety devices are operational, especially that the
high pressure switches are switched on and that the alarms are
acknowledged.
14.3 - Operation of two units in master/slave
mode
The control of a master/slave assembly is in the entering water
and does not require any additional sensors (standard
configuration). It can also be located in the leaving water. In this
case two additional sensors must be added on the common piping.
All parameters, required for the master/slave function must be
configured using the Service Configuration menu. All remote
controls of the master/slave assembly (start/stop, set point, load
shedding, etc.) are controlled by the unit configured as master
and must only be applied to the master unit.
Depending on the installation and control type, each unit can
control its own water pump. If there is only one common pump for
the two units, the master unit can control this. In this case shut-off
valves must be installed on each unit. They will be activated at
the opening and closing by the control of each unit (and the valves
will be controlled using the dedicated water pump outputs).
42
Standard configuration: return water control
Configuration: leaving water control
Legend
B
Master unit
C
Slave unit
Additional CCN board (one per unit, with connection via communication bus)
Control boxes of the master and slave units
Water inlet.
Water outlet
Water pumps for each unit (included as standard for units with hydraulic
module)
Additional sensors for leaving water control, to be connected to channel 1 of
T
the slave boards of each master and slave unit
CCN communication bus
Connection of two additional sensors
Check valve