Calculate the linear length of vapor tube required, adding any
losses for the total number of elbows for application. (See Table
6.) Using this equivalent length, select desired vapor-line size from
Table 5. Subtract the nominal percentage loss from outdoor-unit
presale-literature Detailed Cooling Capacities data for the given
indoor/outdoor combination. Reference all notes of Table 5.
NOTE: When specifying vapor-line insulation, be aware of the
following standard practice:
All standard accessory-tubing kits are supplied with 3/8-in. insu-
lation on vapor line.
For minimal capacity loss in long-line application, 1/2-in. insula-
tion should be specified.
For reference only, the close cell insulation material specified for
accessory tubing kits is a compound of vinyl, neoprene, or nitrile
blends of these polymers. Performance requirements include
thermal range of 0° Fto200°F (-17.8° Cto93° C) and a maximum
thermal conductivity of 0.28.
NOTE: Special consideration must be given to isolating intercon-
necting tubing from building structure. Isolate tubing so that
vibration or noise is not transmitted into structure.
Fig. 1—WeatherMaker™ Units
A95444
7
/
32
″ x
3
/
8
″ (5.56 x 9.53) SLOT
4 REQ'D
1
/
2
″
(12.7)
TYP
J
7
/
16
″
(11.6)
TYP
C
A
7
/
16
″
(11.6)
TYP
B
M
6
1
/
16
″
(154.0)
1
/
2
″
(12.7)
TYP
H
3
/
8
″
(9.6)
TYP
G
J
K
E
D
L
9
/
64
″ (3.45) DIA HOLE
1 REQ'D
7
/
32
″ (5.56) DIA HOLE
3 REQ'D
7
/
32
″ x 2″
(5.56 x 50.8) SLOT
1
/
4
″
(6.3)
TYP
BAFFLE
MAT'L: 20 GA STEEL
SUPPORT
MAT'L: 18 GA STEEL
9
/
64
″ (3.45) DIA HOLE
2 REQ'D
OUTDOOR
UNIT
F
AA
SCREW
10 REQ'D
SUPPORT
4 REQ'D
BAFFLE
2 REQ'D
BAFFLE ASSEMBLY
1
/
4
″
(6.3)
TYP
4
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