UK RAC GEN 24 Interactive - Flipbook - Page 19
DOMESTIC
DOMESTIC INDEX
An important drive to further reduce the potential damage to our ozone
· All Panasonic standard SKE, TKE and UKE units can be installed on existing R22 pipings
· No need for additional accessories (only pipe reductions)
· Approximately 30% energy savings compared to R22 units
Panasonic is doing its part
We at Panasonic are also doing our part – recognising that
all finances are under pressure at the moment. Panasonic
has developed a clean and cost effective solution to enable
this latest legislation to be introduced with as minimum an
effect on businesses and cash reserves as possible.
The Panasonic renewal system allows good quality existing
R22 pipe work to be re-used whilst installing new high
efficiency R410A / R32 systems.
By bringing a simple solution to the problem Panasonic can
renew all Split Systems and PACi systems; and depending
upon certain restrictions we don’t even limit the
manufacturer’s equipment we are replacing.
By installing a new high efficiency Panasonic R410A / R32
system you can benefit from around 30% running cost
saving compared to the R22 system.
Yes…
1. Check the capacity of the system you wish to replace
2. Select from the Panasonic range the best system to
replace it with
3. Follow the procedure detailed in the brochure and
technical data
Simple…
R22 - The reduction of Chlorine critical for a cleaner future.
Guidance on re-using existing R22 piping for a new R410A / R32 installation
Deterioration criteria for refrigerant oil.
1. Precaution.
The existing R22 piping can be re-used for a R410A / R32
system installation if the following conditions are met and
the piping are finally verified to be:
· Dry (no moisture remaining in the piping)
· Clean (no dust remaining in the piping)
· Tight (no refrigerant leak at the joining and piping)
2. Conditions.
· Recover the refrigerant and oil.
Operate “force cooling” according to the recommended
operation time, regardless of the piping length. Single
split: 10 min. Multi split: 30 min. After that, carry out
“pump down” to recover the refrigerant and oil from the
existing R22 system
* Note: If pump down operation is not possible due to the malfunction of the system, flush and wash
the existing piping to collect back the oil and dirt inside the system.
· Check the oil condition. If the oil contains dirt, wash the
existing pipes
· Check the oil colour. After pump down, use a cotton bud
to wipe the oil from the existing pipe. If the oil colour is
higher than ASTM3, use a new pipe as re-use of old
piping is not allowed
· Check pipe thickness. Make sure that the pipe thickness
is more than 0,8 mm. If the thickness is less than
0,8 mm, use a new pipe
· Rework the flare for R410A / R32 connection. Do not
reuse the old flare nuts
0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
5,0
5,5
6,0
6,5
7,0
7,5
8,0
Make sure to use the new flare nuts attached to the
R410A / R32 system.
* Note: If the existing piping size is 1/4” (6,35 mm) and 1/2” (12,7 mm), and the new R410A / R32
system is 1/4” (6,35 mm) and 3/8” (9,52 mm), use a pipe reducer connected at indoor and outdoor
unit.
3. Applicable model.
Panasonic single split room air conditioner from CS/
CU-RE/UE/YE/XE/CE/NE/E*NKE and PKE series onwards.
Panasonic multi split room air conditioner from
CU-2E/3E/4E/5PBE series onwards.
Liquid
Gas
Split
1/4 (6,35)
3/8 (9,52)
1/2 (12,70)
5/8 (15,88)
16 / 20 / 25 / 35
1,6 - 3,5 kW
✔
▲
✖
42 / 50 / 60
4,2 - 6,0 kW
✖
✔
▲
71
6,8 - 7,5 kW
✖
✖
✔
✔ Standard piping connection with current piping length and refrigerant charge rules.
▲ This combinations is allowed respecting maximum piping length and refrigerant charged
declared in model installed as new.
✖ This combinations is not allowed as it is out of piping diameter.
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