01-09
Check Item Check contents Judgement Present Status
Ref. circuit name : _________________________________, Ref. address: ______________ (00
99)
Refrigerant
system
piping
Outlook
Insulation & Fastening Insulated without gap & properly fastened (Yes / No)
Yes / No
Suction line filter Is there any external filter in the suction line
Yes / No
Oil Trap If Distance between OUs 2m ,
Place oil trap both at suction & at Discharge line
Yes / No
Not applicable
Piping
Actual Pipe Length
Between Master OU and farthest IU (
541ft./165m) (feet)
Between first separation tube and farthest IU (
197ft./60m) (feet)
Total Pipe Length (
3280ft./1000m) (feet)
Between OU and OU branch kit (
9ft./3m) (feet)
Between farthest OU and first OU branch kit (
39ft./12m) (feet)
Between RB units (for multi type RB series connection) ( 3ft./1m) (feet)
Height Difference
Between OU and IU (when OU is installed above) ( 164ft./50m) (feet)
Between OU and IU (when OU is installed below) ( 131ft./40m) (feet)
Between IUs (
49ft./15m) (feet)
Between OUs (
1.6ft./0.5m) (feet)
Between RB units (
49ft./15m) (feet)
Between RB unit and IU (
16ft./5m) (feet)
Check Item Check contents Judgement Present Status
Ref. circuit name: ____________________________________, Ref. address: _____(00
99)
For single
type & multi
type RB Units
Piping layout
(Between RB & IU)
Existence of additional RB in between RB branch port and indoor
unit is prohibited
Correct
Not correct
For multi type
RB Unit
Branch port piping layout
(RB branch port vs. IU
connection pattern)
1) Number of free branch port more than one is prohibited Correct
Not correct
For single type
RB unit
For multi type
RB unit
1 free blanch
2 free branch
3 free branch
1-2-6 Piping installation inspection sheet 1/2
Other check point of separation tube
Bending of connection pipe toward separation tube.
Like the figure, adjust the pipe angle so as to be within 3-degree angle.
( 3° )
( 3° )
0 to 26 mm
19-11/16in. (0.5m)
0 to 26 mm
Connection pipe
Separation tube
to Outdoor unit
to Outdoor unit
Leave the distance 19-11/16in.(0.5m) or more for straight part to outdoor unit branch kit.
to Outdoor unit
to Outdoor unit
to Outdoor unit
to Outdoor unit
to Outdoor unit
to RB unit or
Indoor unit (To
main pipe
19-11/16in.(0.5m) or
more
19-11/16in.(0.5m) or more
to RB unit or
Indoor unit (To
main pipe
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