LCP
RG66006889-Rev.01
19
6.2
ELECTRICAL CONNECTIONS OF WATER VANE OPERATED FLOW SWITCH
Available for all LCP units is an additional vane operating flow switch installed in series with the water
and electrical circuits and wired in the unit configuration.
6.3 ELECTRIC
CONNECTIONS
OF THE CIRCULATION PUMP
If selected on ordering, it/they is/are supplied pre-wired with all LCP units. For dual pump kits, whether
set up according to an “AND” or “OR” logic, rotation is controlled on a time basis and triggered in the
event of a fault.
Possible pump-tank configurations:
-
Built-in tank available only on utility side (system)
-
2 pumps which can be configured on demand can be installed on the buffer tank:
1 utility side pump + 1 DHW side pump
2 utility side pumps with “OR” (Standby rotation) or “AND” (parallel) logic
2 DHW side pumps with “OR” (Standby rotation) or “AND” (parallel) logic
-
Two external pumps can be managed from the electrical control board with "OR"
(Standby rotation) or “AND” (parallel) logic with a very low voltage (24 Vac) control by
an insulating transformer or clean contacts.
-
If there is not buffer tank, the dual pump can be installed on board either on the utility
side or on the DHW side with "OR" (Standby rotation) or “AND” (parallel) logic.
The pump/s must be started before the chiller and stopped after the latter (minimum
recommended delay: 60 seconds). If included as an option, this function is already
performed by the microprocessor on the unit.
6.4 REMOTE
CONTROLS
If you wish to include a remote control for switching the unit on and off, you must remove the jumper
between the contacts indicated in the wiring diagram and connect the remote ON/OFF control to the
terminals themselves [see annexed wiring diagram].
All remote controls work with a very low voltage (24 Vac) supplied by the insulating
transformer on the electric control board.
6.5
REMOTE SUMMER-WINTER SWITCHING
If you wish to include a remote control for switching the unit between the summer and winter operating
modes, you must remove the jumper between the contacts indicated in the wiring diagram and connect
the remote switching control to the terminals themselves [see annexed wiring diagram]. The switching
modes vary according to whether the microprocessor control is of the basic or advanced type: detailed
instructions are provided below (see extract of corresponding wiring diagram) and in the microprocessor
user manual, an integral part of the documentation provided.
