Installation and Commissioning Guide
Advance Outdoor Units
Installation and Commissioning Guide - Advance Split Ducted Outdoor Unit
Doc. No.0525-085 Ver. 2 22xxxx
57
PRELIMINARY DATA ONLY
Ver. 2.04 220704
THIS LABEL TO BE REMOVED ON SIGN-OFF
Refrigerant Charging
•
The unit is supplied with factory charged refrigerant as stated in the Rating Label. The use other material as a
refrigerant may cause explosion and/or personal injury.
•
Be aware of all the relevant regulations concerning the handling of refrigerant.
•
The system of this unit operates with Polyester (POE)* oil.
•
It is important to work with absolute cleanliness.
•
Brazing must be done with the use of Nitrogen to avoid carbon deposits into the pipes.
•
The system must be evacuated thoroughly to 500 microns (see evacuation procedure).
•
Never allow refrigerant to vent into the atmosphere. It is an offence to release refrigerant in Australia.
•
Always reclaim refrigerant using equipment and container dedicated for the refrigerant used in the system.
•
Only qualified technicians are allowed to perform any work described in this guide.
•
All work must be carried out in accordance with Australia and New Zealand refrigerant handling code of practice.
Charging Method: Subcooling and Superheat
Parameters:
LLT
= Liquid Line Temperature
SLT
= Suction Line Temperature
SCT
= Saturated Condensing Temperature
SST
= Saturated Suction Temperature
Cooling and Heating Operation:
Adjust the refrigerant charge to obtain the correct super heat and sub-cool for optimal performance as follows:
1. Ensure that air filters are fitted and total system airflows are achieved. (Air filters are not supplied with the unit, it
is the responsibility of the installing contractor to provide and fit adequate return air and fresh air filters).
2. Connect service gauges to the shut off valves.
3. Start the unit in cool mode ensuring that the compressor is in operation before taking service gauges reading.
Allow the system to stabilise for next 15 - 30 minutes before recording.
4. Record the discharge pressure, suction pressure, liquid line temperature and suction line temperature for all the
refrigeration circuits.
Discharge Pressure = ________________ kPa
Suction Pressure = _________________ kPa
Liquid Line Temperature
(LLT)
= _______°C
Suction Line Temperature
(SLT)
= ______ °C
