-
283
-
'12 • PAC-T-173
3) Refrigerant pipe wall thickness and material
●
Select refrigerant pipes of the table sho
wn on the right wall thickness and ma
terial as
specified for each pipe size.
●
This unit uses R410A.
Al
ways use 1/2H pipes ha
ving a 1.0mm or thicker wall for
φ
19.05
or larger pipes,
because O-type pipes do not meet the pressure resistance requirement.
Pipe diameter
[mm]
Minimum pipe wall thickness
[mm]
Pipe ma
terial*
6.35
0.8
O-type pipe
9.52
0.8
O-type pipe
12.7
0.8
O-type pipe
15.88
1.0
O-type pipe
22.22
1.0
1/2H-type pipe
25.4
1.0
1/2H-type pipe
28.58
1.0
1/2H-type pipe
NO
TE
*Phosphorus deoxidized seamless copper pipe C1220T
, JIS
Ｈ
3300
Plug the end of the pipe with ta
pe,
or other
ma
terial,
and fill the pipe with nitrogen gas.
Only use nitrogen gas
(N
2
)
Ta
ping
＜
N
2
＞
Nitrogen
Brazing
Sta
tion valve
Primar
y side
Secondar
y side
0.5MP
a
Hand
Relief valve
Nitrogen
gas
●
Select pipes ha
ving a wall thickness larger
than the specified minimum pipe thickness.
Brazing must be performed under a nitrogen gas flow
.
Without nitrogen gas,
a large quantity of foreign ma
tters (oxidized film) are
crea
ted,
causing a critical failure from ca
pillar
y tube or expansion valve c
logging.
About brazing
＜
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Summary of Contents for FDC Series
Page 95: ... 94 12 PAC T 173 Models FDT100VF 125VF 140VF H H H H H C B A F G D G PJF000Z285 ...
Page 98: ... 97 12 PAC T 173 Models FDEN60VF 71VF C 2 C 1 A B A B D C 1 C 2 C 1 C 2 E G F B PFA003Z817 ...
Page 113: ... 112 12 PAC T 173 b Wireless remote controller RCN E1R 60 17 150 Unit mm ...
Page 278: ... 277 12 PAC T 173 ー K ...
Page 346: ... 345 12 PAC T 173 Power PCB 1BSU OVNCFS 4GRNCEG VJG 2 ...
Page 518: ... 517 12 PAC T 173 3 5 SUPER LINK E BOARD SC ADNA E F SL2NA E and SL3N AE BE to control ...
Page 519: ... 518 12 PAC T 173 ...
