22
PMEN0645 rev.0 - 04/2023
5
R32 REFRIGERANT CIRCUIT
REFRIGERANT PIPING
In case of increasing more than 30m (for 2.5HP and 3HP) a minimum oor area requirement must
be considered.
1.5HP 2HP 2.5HP 3HP
Factory Charge kg 1.1 1.1 1.3 1.3
Charge-less piping length m 10 10 10 10
Addional Charge needed g/m 15 15 45 45
Maximum piping m 50 50 50 50
Maximum total refrigerant charge kg 1.7 1.7 3.1 3.1
Minimum room area requirement (Amin) m
2
No requirement
is needed
Minimum area
is required
Minimum piping length between outdoor unit and indoor unit (Lmin) m
3
Maximum height dierence between indoor and outdoor unit (H)
Outdoor unit higher than indoor unit m 30
Indoor unit higher than outdoor unit m 20
◆ Minimum area requirements
In case of total refrigerant amount ≥1.84 kg, the unit should be installed, operated and stored in a
room with a oor area larger than the minimum criteria. Check this informaon on the addional
informaon for R32 manual supplied with the indoor unit.
◆ Refrigerant piping size
Piping connecon size of outdoor unit & indoor unit
Outdoor unit Refrigerant pipe Indoor Unit
Model
Piping
length
Pipe Connecon size
(Between Outdoor unit and
Indoor unit)
Pipe Connecon size
Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe
1.5HP 3~50m Ø 12.7 (1/2”) Ø 6.35 (1/4”) Ø 12.7 Ø 6.35 Ø 12.7 (1/2”) Ø 6.35 (1/4”)
2HP 3~50m Ø 12.7 (1/2”) Ø 6.35 (1/4”) Ø 12.7 Ø 6.35 Ø 12.7 (1/2”) Ø 6.35 (1/4”)
2.5HP
3~30m Ø 12.7 (1/2”) Ø 6.35 (1/4”) Ø 12.7 Ø 6.35 Ø 12.7 (1/2”) Ø 6.35 (1/4”)
30~50m
Ø 15.88 (5/8”)
(*)
Ø 9.52 (3/8”)
(*)
Ø 15.88 Ø 9.52
Ø 15.88 (5/8”)
(*)
Ø 9.52 (3/8”)
(*)
3HP
3~30m Ø 12.7 (1/2”) Ø 6.35 (1/4”) Ø 12.7 Ø 6.35 Ø 12.7 (1/2”) Ø 6.35 (1/4”)
30~50m Ø 15.88 (5/8”)
Ø 9.52 (3/8”)
(*)
Ø 15.88 Ø 9.52
Ø 15.88 (5/8”)
(*)
Ø 9.52 (3/8”)
(*)
NOTE
(*) For installaons of more than 30m piping length, the required refrigerant gas and liquid piping
size are bigger than the unit supplied, so refrigerant adapters are required. These pipe adapters
shall be supplied as an accessory.
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