Electrical Connection; Start-Up; Preparation; Procedure - Dimplex Laj 60Tur+ Montageanleitung Und Bedienungsanleitung

Antifreeze
Heat pump systems, which cannot be guaranteed to be frostfree,
should be equipped with a drainage option (see Fig.). The anti-
freeze function of the heat pump manager is active whenever the
heat pump manager and the heat circulating pump are ready for
operation. The system has to be drained if the heat pump is
taken out of service or in the event of a power failure. The heating
circuit should be operated with a suitable antifreeze if heat pump
systems are implemented in buildings where a power failure can-
not be detected (holiday home).

6.3 Electrical connection

A standard four-core cable is used for connecting the heat pump
to the power supply.
The cable must be provided by the customer. The conductor
cross section is selected in accordance with the power consump-
tion of the heat pump (see appendix Device information) and the
applicable VDE (EN) and VNB regulations.
An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility blocking contactor or power contactor) as well
as a 3-pole circuit breaker with common tripping for all external
conductors must be installed in the power supply (tripping current
in compliance with the device information). The supplied main
switch must be assembled before the heat pump. When connect-
ing, ensure that the incoming supply has a clockwise rotating
field.
Phase sequence: L1, L2, L3.
ATTENTION!
Ensure the rotary field is clockwise when connecting the mains cables (if
the rotary field is not clockwise, the heat pump will not work properly, is
very loud and may cause damage to the compressor).
The control voltage is supplied via the heat pump manager.
The heat pump manager has a 2~ PE; 200 V AC-50 Hz, power
supply and is connected in compliance with its own operating in-
structions.
ATTENTION!
The control line is essential for the operation of air-to-water heat pumps
for outdoor installation. The control line must be laid separately from the
mains cable. It is not permissible for the customer to extend the control
line.
www.dimplex.de
Three separate lines are used as control lines. Two of the cables
have square plug connectors, which have to be connected in the
heat pump manager at the bottom right of the heat pump switch
box. One of these cables is for signals from the heat pump to the
heat pump manager, the other is for signals from the heat pump
manager to the heat pump.
The third cable serves as a communication connection between
the heat pump manager and the electronic expansion valve
(N23), and must be connected to the "field card" on the heat
pump manager and to the expansion valve driver (N23/Network)
in the switch box of the heat pump.
More detailed information can be found in the operating instruc-
tions of the heat pump manager.
For detailed information, see circuit diagrams in the appendix.
7

Start-up

7.1 Preparation

The following items need to be checked prior to start-up:
 All of the heat pump connections must be installed as de-
scribed in chapter 6.
 All valves that could impair the proper flow of the heating
water in the heating circuit must be open.
 The air intake and air outlet paths must be clear.
 The fan must turn in the direction indicated by the arrow.
 The settings of the heat pump manager must be adapted to
the heating system in accordance with the manager's oper-
ating instructions.
 Ensure the condensate outflow functions properly.

7.2 Procedure

The heat pump is started up via the heat pump manager. Adjust-
ments should be made in compliance with the instructions.
At hot water temperatures under 7 °C, start-up is not possible.
The water in the buffer tank must be heated to a minimum
of 18 °C with the second heat generator.
To ensure a problem-free start-up, the following procedure is to
be implemented:
1) Close all consumer circuits.
2) Ensure that the heat pump has the correct water flow.
3) Use the manager to select the automatic operating mode.
4) In the special functions menu, start the "Start-up" program.
5) Wait until a return temperature of at least 25 °C has been
reached.
6) Now slowly reopen the heating circuit valves in succession
so that the heating water flow is constantly raised by slightly
opening the respective heating circuit. The heating water
temperature in the buffer tank must not be allowed to drop
below 20 °C during this process. This ensures that the heat
pump can be defrosted at any time.
7) When all heat circuits are fully open and a return tempera-
ture of at least 18 °C is maintained, the heat pump start-up
is complete.
ATTENTION!
Operating the heat pump at low system temperatures may cause the heat
pump to break down completely. After a prolonged power failure, the
commissioning procedure detailed above must be followed.
452163.66.54 · FD 9211
LAJ 60TUR+
EN-7