Test Points, Maintenance And Troubleshooting; Checklist Prior To Commissioning - Bosch LWPS 3 Instructions D'installation Et D'utilisation

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8 Test points, maintenance
and troubleshooting
If no faults have occurred here by this point, the unit can now
be operated and you can enjoy the benefits of the LWPS split
heat pump.

8.1 Checklist prior to commissioning

CAUTION!
Before opening the unit, ensure that all electric circuits are
isolated from the power supply.
Pos. Category
1
2
Current
3
4
5
6
7 Water pressure
8
11
Installing the unit
12
EN-14
Before commissioning the unit, run through the test points out-
lined in this chapter.
You will also find instructions for maintenance and trouble-
shooting here.
Components

All switches with contacts with different polarities should be connected se-
Field wiring
curely in accordance with the specified directives or laws.

Cable connections should only by made by trained specialist personnel.

Cable connections and electrical components available separately should
comply with European and local directives.

Cable connections should be made in accordance with the circuit diagram pro-
vided with this unit.

A circuit breaker (earth leakage breaker) with 30 mA should be installed.
Circuit breakers 
The circuit breaker in the control cabinet of the indoor unit should be switched
on before the unit is commissioned.

An earthing wire should be connected. Never connect an earthing wire to a gas
Earthing
pipe, water piping, a metal object of the building, a surge protection socket or
similar.

Use a separate mains cable.
Power supply unit

Cable connections of the Connections on the terminal panel (in the control cabinet of the indoor unit)
terminal panel
should be fixed in place securely enough.

After filling with water, the pressure gauge should show a pressure of 1.0 to 1.5
Filling pressure
bar. The maximum pressure should not exceed 3.0 bar.

While filling with water, the system should be purged via the purging hole.

If no water comes out after pressing on the tip (on the top side of the opening),
the purging process is not yet complete.
Purging

If the system has been purged optimally, water sprays out like a fountain when
pressing on the tip. Take care when testing the purging. Water could spray on
your clothes.

The isolating valves (on-site) should be open.
Isolating valve

Maintenance of compo- There should be no visibly damaged components in the indoor unit.
nents

Refrigerant leaks reduce the output of the unit. In the event of leaks, please in-
Refrigerant leak
form an authorised after-sales service partner.
452162.66.16a · FD 0108
LWPS 3 - LWPS 14
Test point
www.boesch.at