York JVOHQ Series Installation & Maintenance Manual page 34

Model
The outdoor
unit A
The outdoor
unit B
Combination
Mode
The outdoor
unit C
The outdoor
unit D
Branch Pipe 1
Branch Pipe 2
Branch Pipe 3
Gas pipe
a
Liquid pipe
Gas pipe
b
Liquid pipe
Gas pipe
c
Liquid pipe
Gas pipe
Piping Size
d
Liquid pipe
Gas pipe
e
Liquid pipe
Gas pipe
f
Liquid pipe
Gas pipe
g
Liquid pipe
* Outdoor unit pipe constructing as per the requirements of the above table.
Refer to the table above for the outdoor model to select the branch pipe type and pipe diameter.
6.4.5 Stop Valve
(1) Ensure that the valve is completely closed.
(2) Connect the fluorine hose to stop the valve check joint, and release the refrigerant gas in the gas-
side stop valve pipe.
(3) Cut off the thin (Ø6.35) at the end of stop valve cap to ensure no gas existed in the stop valve.
(4) Remove the stop valve cap with welding at the welding position of the stop valve cap, ensure
that the flame does not touch valve body during welding to prevent valve damage due to welding
sparks.
JVOH860 JVOH880
VAEMBQ VAEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH220 JVOH240
VPEMBQ VPEMBQ
JVOH200 JVOH200
VPEMBQ VPEMBQ
JVOH200 JVOH200
VPEMBQ VPEMBQ
50.8 50.8
22.2 22.2
22.2~25.4 22.2~25.4
38.1 38.1
19.05 19.05
38.1 38.1
19.05 19.05
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
Service Port
Stem
Gas side stop valve
Gas pipe
Cap brazing
position
Cap detail
Cutting position
Cut here
Ø6.35 pipe
Figure 6.2 Gas Pipe Welding
JVOH900 JVOH920
VAEMBQ VAEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH220 JVOH240
VPEMBQ VPEMBQ
JVOH200 JVOH200
VPEMBQ VPEMBQ
JM-68SNQ
JM-30SNQ
JM-30SNQ
50.8 50.8
25.4 25.4
25.4~28.58 25.4~28.58
38.1 38.1
19.05 19.05
38.1 38.1
19.05 19.05
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
Gas side stop valve
Burner
30
(Ømm)
JVOH940 JVOH960
VAEMBQ VAEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH240 JVOH240
VPEMBQ VPEMBQ
JVOH220 JVOH240
VPEMBQ VPEMBQ
50.8 50.8
25.4 25.4
25.4~28.58 25.4~28.58
38.1 38.1
19.05 19.05
38.1 38.1
19.05 19.05
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88
28.58 28.58
15.88 15.88