J&E Hall V3 FUSION, Technical Manual

Page: 27 / 36

Issue: 01.06.2023 Page 24
F-Gas Requirement
The models of equipment covered in this Technical Manual rely on fluorinated greenhouse gases for their functioning.
All unit models come from the factory pressurized with OFN (Oxygen Free Nitrogen) only.
In F-Gas Regulation EU 517/2014, the requirement for leak testing on the system is based on the charge size in tonnes of CO
2
equivalent. Which means systems with higher GWP refrigerants will need to be leak tested more frequently than those with the
same charge weight of a lower GWP refrigerant.
The GWP (Global Warming Potential) values of refrigerants which are specified for use along with the three new thresholds for
leak testing requirements based on TCO
₂
Eq (Tonnes CO
₂
Equivalent) are as follows:
Table 14: Tonnes CO
₂
Equivalent
Refrigerant Charge - kg
Refrigerant GWP 5T CO
₂
Eq 50T CO
₂
Eq 500T CO
₂
Eq
R134a 1430 3.5 35 350
R407A 2107 2.4 23.7 237
R407F 1825 2.7 27.4 274
R448A 1387 3.6 36.0 360
R449A 1397 3.6 35.8 358
R452A 2140 2.3 23.4 234
Starting 1st January 2017, the requirement for leak detection and maintaining system logs changes from 3kg HFC to 5 tonnes
CO
2
equivalent.
Table 15: Leak Inspection Frequency
System Charge (Tonnes CO
₂
Equivalent)
Leak Inspection Frequency
e.g. 3.6 to 36 kg R448A
•
At least once every year.
5 to < 50
•
At least once every 2 years if a fixed leak detection system is fitted.
e.g. 36 to 360 kg R448A
•
At least once every 6 months.
50 to < 500
•
At least once every year if a fixed leak detection system is fitted.
•
𝑇𝑜 𝑐𝑎𝑙𝑐𝑢𝑙𝑎𝑡𝑒 𝑇𝐶𝑂
2
𝐸𝑞 𝑣𝑎𝑙𝑢𝑒 =
𝑅𝑒𝑓𝑟𝑖𝑔𝑒𝑟𝑎𝑛𝑡 𝐶ℎ𝑎𝑟𝑔𝑒 (𝑘𝑔𝑠) × 𝑅𝑒𝑓𝑟𝑖𝑔𝑒𝑟𝑎𝑛𝑡 𝐺𝑊𝑃
1000
A refrigerant charge label is supplied with each unit (inside the electrical box). The total
refrigerant charge for the system and the TCO
2
Eq value must be entered on the label with
indelible ink and must be adhered in the proximity of the product charging port. The label
supplied will represent the refrigerants approved for use with that unit. An example of the
unit label is as follows:
Table 16: Trouble Shooting
FAULT POSSIBLE CAUSE CHECK SOLUTION
COMPRESSOR
Compressor will
not start
Power supply
Phase(s) and neutral present? Check/rectify
Voltage within tolerance? Check/rectify
Is isolator switched on? If not - switch on
Compressor contactor not
pulled in (where fitted)
Is there correct voltage to
contactor coil?
If yes - coil faulty. Replace
contactor/coil
If no - check for break in control
circuit or blown control fuse.
Has a safety switch tripped out? Check cause and reset
Compressor contactor
pulled in but compressor not
running Is voltage being switched across
contactor? If yes - check voltage at
compressor terminals and
compressor wiring
If no - Replace the faulty contactor
Safety switch tripped (LP,
HP, Overload) Low and High pressure conditions
and current draw on overload.
Check settings of safety switches
are correct. Reset and rectify any abnormal
conditions or adjust switch settings
if not set correctly