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Installation Manual of Room Air Conditioner
Note: When additional refrigerant is necessary, first purge air out of connecting pipe by external gas,
then drive out the excessive rerigerant by purging method.
Brand new unit is charged 80g more refrigerant than spec. This is only for first instaltion to purge air
in the indoor unit and connecting pipe.
When piping is longer than 5m, charge additional refrigerant specified in this list.
φ6.35:
Pipe length
Refrigerant charge(g)
Electric wiring
Note:
Electric wiring must be done by qualified person.
Use copper wire only.
The parameter of the connecting cable:
HPU-18H03/E1:3*2.5+2*0.75
HPU-24H03/E1：3*2.5+3*0.75 HPU-24C03/E1：4*0.75
Wiring of indoor unit
Insert the cable from outside the wall hole where piping already exist.
Pull it out from front.
Losen terminal screw and insert cable end fully into terminal block, then
Pull the cable gently to make sure it is tight.
Replace cover after wiring.
Indoor unit
L
N
1 2
3
N L
Outdoor unit
HPU-18C03/E1
Wiring of outdoor unit
Insert the cable from inside the wall hole where piping already exist.
Pull it out from front.
Loose terminal screw and insert cable end fully into terminal block, then tighten it
Pull the cable gently to make sure it is tight.
Replace cover after wiring.
Note:
When connecting indoor and outdoor wire, check the number on indoor and outdoor terminal
blocks. Terminals of same number and same color shall be connected by the same wire.
Incorrect wiring may damage air conditioner's control or cause operation failure.
10m
15m
5m
200
100
HPU-18C03/E1：3*2.5
Indoor unit
Outdoor unit
HPU-24C03/E1
Note: User should prepare the part in the dashed
frame by himself.
φ9.52:
Pipe length
Refrigerant charge(g)
Indoor unit
L
1 2
3
N L
Outdoor unit
HPU-18H03/E1
26
5m
10m
300
tighten it
Indoor unit
N
Outdoor unit
HPU-24H03/E1
15m
600
1 (
L )
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