York IDH072B21S Series User Manual

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P01432Q-rev.1
6. RefrigerantPipingWork
Table 6.1 Piping Size
inch (mm)
Model Gas Piping Liquid Piping
(H,Y)IDH072B21S 3/4 (19.05)
3/8 (9.52)
(H,Y)IDH096B21S 7/8 (22.2)
(3) Prepare eld-supplied copper pipes.
(4) Select clean copper pipes. Make sure there is no dust and moisture inside.
(5) The refrigerant oil for the refrigerant R410A is susceptible to moisture, an oxide lm, and fatty oil. Take
special care during the installation so that moisture, contaminations or old refrigerant oil will not enter
the refrigerant cycle. Otherwise, impurities may adhere to the expansion valve and it may prevent
proper operation.
(6) When cutting the pipes, use a pipe cutter to avoid grind swarf generation for the pipe cutting work. Blow
the inside of pipes with nitrogen or dry air to remove any dust or foreign materials before connecting
pipes. Do not use any tools which produce a lot of swarf such as a saw or a grinder.
6.1 Piping Materials
(1) The tolerance of refrigerant piping length differs depending on the combination with the outdoor unit.
Refer to “Installation and Maintenance Manual” of the outdoor unit for details.
(2) Select the piping size from the following table.
For details on refrigerant piping work, vacuum pump, and refrigerant charge, refer to the "Installation and
Maintenance Manual" for the outdoor unit.
Usethespeciednon-ammablerefrigerant(R410A)totheoutdoorunitintherefrigerantcycle.
DonotchargetheunitwithmaterialsotherthanR410A,suchashydrocarbonrefrigerants(propane
andisobutan),oxygen,ammablegases(acetylene,ammonia,etc.)orpoisonousgaseswhen
installing,maintainingandmovingtheunit.Theseammablesareextremelydangerousandmay
causeexplosion,are,orinjury.
In Case of Getting the Pipe
Through a Hole in the Wall
Correct
CorrectIncorrect Incorrect
Correct Incorrect
HoleHole
Attach a cap or put a plastic bag
over the pipe end.
Attach a cap or put a plastic
bag over the pipe end.
Attach a cap or put a plastic
bag over the pipe end.
Rubber Band
Do not lay the pipe
directly on the ground.
Rain water
can come in.
In Case of Rain

York IDH072B21S Series Specifications

General

Brand	York
Model	IDH072B21S Series
Category	Air Conditioner
Language	English