Ochsner 288800V, Design And Installation Manual

PIA-982027-AIR 85-in-EN    |  www.ochsner.com 37

Completion and commissioning 

11.1  Before initial start-up

The heat pump has no separate ON/OFF switch. In an 

emergency, the system must be shut down via the specified 

safety device. The safety device must be accessible so that 

an emergency shutdown can be performed at any time.

WARNING: Electrocution

The initial start-up of electrical systems is permitted 

only in the presence of a qualified contractor.

»

Make sure that no one can be put at risk during the 

initial start-up.

»

Make sure that the heat sink system (heating and 

DHW heating) has been connected to the heat pump.

»

Make sure that the hydraulic system is filled with 

water.

»

Make sure that the electrical installation has been 

carried out and completed professionally.

Material damage

Operating the circulation pumps without water in 

the system will destroy the pumps. 

11.2  Testing the control circuit

Once all the above conditions have been checked, the 

control circuit (OTE controller, 230 V AC) can be switched 

on so that the individual functions can be tested.

»

Check all the sensors and their values for accuracy.

»

Check all controller outputs used in your hydraulic 

system for correct function.

12.  Completion and commissioning

OCHSNER Customer Service or an authorised customer 

service partner must be requested to complete and com-

mission the system. Commissioning appointments must 

be requested at least 2 weeks in advance.

12.1  Requirements

Before commissioning, the system installer must ensure 

the following points:

►

The design and installation of the system have been 

approved by OCHSNER.

►

The machine-specific engineering and installation 

information has been observed (system installed ac-

cording to OCHSNER standard hydraulic schematics 

or an OCHSNER special hydraulic system).

►

The minimum area of clear floor space in the installa

-

tion room for the indoor unit has been observed.

►

For heat pumps with OTE controller: 

 - The system datasheet is available and has 

been fully and correctly completed.

►

For air/water heat pumps:

 - The outdoor unit has been correctly installed 

and bolted to the foundation.

 - If there is a snow cover, it has been correctly 

installed on the outdoor unit.

1.  The heat sink system is fully ready (heating and 

DHW heating).

►

The hydraulic pipework has been correctly dimen-

sioned and installed so that the required flow rates 

can be set.

►

The heat sink system has been flushed, filled and 

vented according to the relevant standards.

►

System fill water of a quality compliant with the rel

-

evant standards (e.g. VDI 2035) is assured.

►

The operating pressure has been set (0.8-2.0 bar).

►

The system temperature or the buffer tem

-

perature must be at least 15°C at the time of 

commissioning.

Information

If the minimum system temperature or the buffer 

temperature is not achieved, then the refrigerant 

charge cannot be set correctly. Non-compliance 

with the minimum system temperature or the buff

-

er temperature will lead to commissioning being 

cancelled.

»

If necessary, use preheating on site.

►

The necessary safety devices are in place and 

have been adjusted and checked according to sys-

tem requirements.

►

A DHW tank is present and has been filled for 

commissioning.

►

All shut-off valves have been opened, adjusted 

and checked.

►

The flow meters installed on site have been 

checked for correct function.

►

The system has been hydraulically balanced.

2.  The heat source system has been prepared.

►

If hydraulic pipework is fitted on the heat source 

side, it has been correctly dimensioned and in-

stalled so that the required flow rates can be set.

►

The necessary safety devices are in place and 

have been adjusted and checked according to sys-

tem requirements.

►

The wall conduit has been properly sealed.