Johnson Controls HIDH018B21S Installation And Maintenance Manual

P00792Q-rev.2
15
6. Refrigerant Piping Work
Table 6.1 Piping Size
inch (mm)
Model Gas Piping Liquid Piping
(H,Y,C)IDM006B21S
(H,Y,C)IDM008B21S
(H,Y,C)IDM012B21S
(H,Y,C)IDM015B21S
1/2 (12.7) 1/4 (6.35)
(H,Y,C)IDM018B21S
(H,Y,C)IDM024B21S
(H,Y,C)IDM030B21S
(H,Y,C)IDM036B21S
(H,Y,C)IDM048B21S
5/8 (15.88) 3/8 (9.52)
(3) Prepare the eld-supplied copper piping.
(4) Select clean copper pipes. Make sure there is no dust and moisture inside.
(5) The refrigerant oil used in combination with refrigerant R410A is susceptible to problems relating to
moisture contamination, oxide lm, oil, and fat. Exercise special care during the installation so that
moisture, particulate contamination, or old refrigerant oil will not enter the refrigerant cycle. Otherwise,
impurities may adhere to the expansion valve and it may prevent the proper operation.
(6) Caution: When cutting piping, do not use conventional tools such as saws and grinding wheel cutting
disks produce harmful metallic lings that can damage a refrigerant system. Use a pipe cutter to
eliminate the chances of metal lings produced by the cutting operation. After the cut is made, blow out
each pipe with dry compressed air or nitrogen to remove this residue before making pipe connections.
6.1 Piping Materials
(1) Tolerances for refrigerant piping lengths depend on the combination with the outdoor unit. Refer to the
“Installation and Maintenance Manual” for 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(HFCR410A)fortheoutdoorunitrefrigerantcycle.Do
notchargetheunitwithanythingotherthanHFCR410A,suchashydrocarbonrefrigerants(propane
andIsobutene),oxygen,andotherammablegases(acetylene,ammonia,andsoforth),orany
poisonousgaseswheninstalling,maintainingandmovingtheunit.Thesesubstancesarevolatile
anddangerousandcanresultinre,explosion,andseriousorfatalinjuries.
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

Johnson Controls HIDH018B21S Specifications

General

Brand	Johnson Controls
Model	HIDH018B21S
Category	Air Conditioner
Language	English