Start-Up; Refrigerant Circuit - Bosch CS 3000 AWP Installations- Und Bedienungsanleitung

Start-up

7 Start-up
General
The indicated operations should be done by qualified technician with
specific training on the product.
The electrical, water connections and the other system works are
performed by the installer.
Upon request, the service centres performing the start-up. Please agree
with the service centres, in advance, the start-up data.
For details, refer to the various chapters in the manual.
Before checking, please verify the following:
• the unit should be installed properly and in conformity with this
manual;
• the electrical external isolation device should be sectioned at the
beginning;
• the line sectionalizing device is open, locked and equipped with the
suitable warning;
• make sure no tension is present.
CAUTION
After turning off the power wait at least 10 minutes before
accessing to the electrical panel or any other electrical component.
▶ Before accessing check with a multimeter that there are no residual
stresses.
▶ Do not power the unit with empty water side exchangers. It could
cause possible damages to the anti-freeze electric heaters.
Preliminary checks
Unit power supply OFF
1 Safe access
2 Suitable frame to withstand unit weight + people weight
3 Functional clearances
Air flow: correct return and supply (no bypass, no
4
stratification)
5 Condensation drain
6 Considered level to be reachable by snow
7 Considered main winds
8 Lack of chimneys/corrosive atmospheres/pollutants
9 Structure integrity
10 Fans run freely
11 Unit on vibration isolators
12 Unit levelled
13 Unit input water filter + shut-off valves for cleaning
14 Vibration dampeners on hydraulic connections
Expansion tank (recommended volume = 10% system
15
content)
16 Minimum system water content
17 Clean system
Loaded system + possible glycol solution + corrosion
18
inhibitor
19 System under pressure + vented
20 Refrigerant circuit visual check
21 Earthing connection
22 Power supply features
Connections performed by Customer: electrical
23
connected, configuration
Table 47
60
Start-up sequence
Unit power supply ON
Compressor crankcase heater operating at least
1
2
3
4 Pump manual start-up and flow check
Refrigeration circuit shut-off valves opening (if
5
6
7
8
9
10
11 Measure of return and supply water temperature
12 Super-heating and sub-cooling measure
13 Check no anomalous vibrations are present
14
15
16 Complete and available unit documentation
Table 48
7.1

Refrigerant circuit

▶ Visually inspect the refrigerant circuit: the presence of oil stains can
be a symptom of leakage (caused e.g. by transportation, handling or
YES NO
other);
▶ Check if the refrigerant circuit is under pressure. Please use the unit
manometers, if present, or service manometers;
▶ Make sure that all the service outlets are closed with proper caps; if
caps are not present a leak of the refrigerant can be possible;
▶ Open all of the refrigeration circuit shut-off valves (if applicable).
since 8 hours
Off-load voltage measure
Phase sequence check
applicable)
Unit ON
Load voltage measure
If remote On-Off:
set dip-switch S5-3 on ON
If units in modular configuration:
set dip-switch S12-2 on ON
set unit address via ENC4
Check of all fan operating
Set-point personalization
Scheduling customisation
CS3000 AWP – 6721852570 (2022/11)
YES NO