Bedienungsanleitung REMKO KWK ZW serie (Seite 27 von 40) (Englisch)

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8 Before commissioning

Anti-freeze protection for the medium

If a water-glycol mixture is used, it is to be pre-

mixed before being put in the system. The desired

concentration is then to be checked.

Bleeding the system

nAir may still be in the pipe lines after the leak

testing. This is carried during operation of the

circulation pump to the automatic bleeding

valves or to the cold water drain. In this case it

is necessary to bleed the system again.

nThe non-circulating pressure must then be

adjusted to the required system pressure.

NOTICE!

During manual bleeding, any glycol mixtures

which escape must be disposed of separately.

Do not feed them into the condensate tray!

Diaphragm expansion vessel

nThe preliminary pressure for the diaphragm

expansion vessel must be adjusted individually

to the system layout, the volume of the medium

and the installation site.

Valves for hydronic balancing

nThe calculated excess pressure in the pipe net-

work layout at the individual cold water outlets

must be adjusted with the valves for hydronic

balancing.

Safety valve

nThe safety valves and their correct function

must be checked.

nThe drain line for the valves is to be checked

for function and leak tightness.

9 Commissioning

NOTICE!

Commissioning should only be performed by

specially trained personnel and documented

after the certificate has been issued.

NOTICE!

Observe the manuals for the unit and all other

components when commissioning the entire

system.

Function test for cooling operating mode

1. Switch the power supply on.

2. Open all shut-off valves if necessary.

3. Switch on the chiller and the corresponding

circulation pump. The outlet temperature

must be between +4 and +18 °C.

4. Use the controller to switch on the unit and

select the cooling mode, maximum fan speed

and lowest target temperature.

5. Measure and record all the required values in

the commissioning report and check the

safety functions.

6. Check the unit control system using the func-

tions described in the "Operation" chapter.

7. Check that the condensate drainage line is

functioning correctly by pouring distilled

water into the condensate tray. A bottle with

a spout is recommended for pouring the

water into the condensate tray.

Function test of heating operating mode

1. Switch the power supply on.

2. Open all shut-off valves if necessary.

3. Switch on the heating system and the corre-

sponding circulation pump. The outlet tem-

perature must lie between +35 and +70 °C.

4. Use the controller to switch on the unit and

select the heating mode, maximum fan

speed and highest target temperature.

5. Measure and record all the required values in

the commissioning report and check the

safety functions.

6. Check the unit control system using the func-

tions described in the "Operation" chapter.

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