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3.5 HVAC system
The HVAC is supplied by main DB with 3-phase connection. The main isolator is located to the left of the indoor unit.
The unit is controlled by a wired remote above the door.
The outdoor unit will need to be fitted and connected with pre-made pipes and electrical cable once placed on site.
The outdoor compressor will be pre-charged with gas. Piping needs to be done by a qualified technician to ensure there
are no leaks in the system.
3.6 Fire suppression system
The fire suppression system is powered by the UPS via the main DB.
The release solenoid is removed for transport and needs to be connected again once on site.
The operating key should be in auto/manual mode for normal operation. No setting should be changed as unit is
commissioned during the production phase.
See Appendix B for more information on the different states of the fire suppression system.
04 BASIC OPERATING INSTRUCTIONS
4.1 Pre-operation checklist
1. Confirm all power is disconnected.
2. Confirm all circuit breakers are in the OFF position.
3. Confirm fire system is active and set to manual mode.
4. Confirm all BMUs are switched OFF by opening red missile switches.
5. Switch ON UPS by holding ON button for 4 seconds.
6. Close DC fuse in DB.
7. Switch ON all circuit breakers in DB.
8. Properly close all doors of the relevant iESS system.
9. Do access enrolment.
10. Confirm access is complete and the green indicator light is ON.
11. Open the iESS system main doors.
12. Confirm relays are activated.
4.2 Switching the system ON
1. Close inverter DC breaker and ensure inverter AC breaker is open by using designated handle.
2. Turn ON only one string at a time and measure appropriate voltage on DC bus on the inverter.
3. Close the red missile switches on BMU. Flip the negative switch first and then the positive switch.
4. Turn ON the 12 V power supply.
5. Turn ON the BMU power by switching the main ON/OFF switch.
6. Repeat steps 2 to 5 for all string's BMUs.
7. Ensure that the DC currents that are flowing between the strings are <5 A.
8. Switch and close AC breaker on inverter with designated handle.
9. Access settings on inverter touch screen. Enter access code – (1234 – ATESS inverter); (222– Kehua inverter).
10. Press the inverter ON button on touch screen and confirm.
11. After 2 minutes, the main inverter will be ON and AC available to charge and discharge.
17 Blend Crescent
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Firgrove Industrial Estate
Cape Town, 7134
+27(0)21 205 2000
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support@bluenova.co.za
www.bluenova.co.za
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