Installation & Commissioning Guide - ESP Platinum OD Split Ducted Units
Doc. Part No. 0525-053
Ver. 5 200129
Page 22 of 36
•
The units detailed on this guide are pre-charged with R-410A refrigerant
. Should there be need to add
or remove some refrigerant, it is recommended to follow the charging method explained below.
• •
Never allow R-410A refrigerant to vent into the atmosphere. It is an offence to release refrigerant in Australia.
Never allow R-410A refrigerant to vent into the atmosphere. It is an offence to release refrigerant in Australia.
Always reclaim refrigerant using equipment and container dedicated for R-410A system use only.
Always reclaim refrigerant using equipment and container dedicated for R-410A system use only.
• •
All work must be carried out in accordance with Australia and New Zealand refrigerant handling code of
All work must be carried out in accordance with Australia and New Zealand refrigerant handling code of
practice.
practice.
• •
Only qualified personnel are allowed to perform any work described in this guide and specifically work
Only qualified personnel are allowed to perform any work described in this guide and specifically work
related to addition or removal of refrigerant.
related to addition or removal of refrigerant.
• •
If the ambient temperature is below 25
If the ambient temperature is below 25
oo
C, ensure that the system is connected to power supply (stand by) for
C, ensure that the system is connected to power supply (stand by) for
at least six hours prior to charging. This is to ensure that the internal crankcase heater is operating to avoid
at least six hours prior to charging. This is to ensure that the internal crankcase heater is operating to avoid
any liquid going into the compressor that may cause damage. If the ambient temperature is more than 25
any liquid going into the compressor that may cause damage. If the ambient temperature is more than 25
oo
C,
C,
charging is allowed right away
charging is allowed right away.
.
• •
R-410A refrigerant must always be charged in liquid state.
R-410A refrigerant must always be charged in liquid state.
•
The system can be charged through the suction service port on the compressor suction line. But be careful
not to charge too much refrigerant at once, let the liquid enter in short bursts by opening and closing your
gauges.
•
Changes in refrigerant charge must be noted to a label that is fixed to the unit for future reference.
•
Make sure to use weighing scale for accurate measurements when adding or removing refrigerant charge.
NOTE:
The 5 step commissioning process MUST be completed, please refer to installation guide of Que Touch
controller.
SUBCOOLING AND SUPERHEAT CHARGING METHOD
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 subcool for optimal performance as follows:
1. Ensure that air filters are fitted and total system airflow is 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 schrader valves.
3. Start the unit in cool mode ensuring that compressors are in 100% operation before taking service gauges reading.
Allow the system to stabilize for next 15-30 minutes before recording.
Record the discharge pressure, suction pressure, liquid line temperature and suction line temperature
for all of the refrigeration circuits:
Discharge Pressure = ________________ kPa Suction Pressure = __________________ kPa
Liquid Line Temperature
(LLT)
= ________
0
C Suction Line Temperature
(SLT)
= _______
0
C
The system of this unit operates with PVE oil that rapidly absorbs moisture.
The system of this unit operates with PVE oil that rapidly absorbs moisture.
The maximum time any system can be opened to atmosphere is 15 minutes.
The maximum time any system can be opened to atmosphere is 15 minutes.
REFRIGERANT CHARGE DETAILS
CRQ2-14AS
CRQ3-17AS
CRQ4-19AS
Refrigerant Type
R-410A
R-410A
R-410A
Refrigerant Charge (grams)
5425
6225
7775
Pre-charged Length
15m
15m
15m
Additional Refrigerant per m
50g
50g
50g
REFRIGERANT CHARGING
CAUTION
NOTES:
