Pack fiber glass insulation and a sealing material such as
permagum around refrigerant lines where they penetrate a wall
to reduce vibration and to retain some flexibility.
Do not install a filter drier since one is factory installed in every
outdoor unit.
Insulate all vapor lines with a minimum of 1/2" foam rubber.
Liquid lines that will be exposed to direct sunlight and/or high
temperatures must also be insulated.
ORIFICE SELECTION
YORKMATE FLOW CONTROL COILS
NOTE: The proper orifice must be installed in the evaporator
coil liquid connection prior to the connection of the
refrigerant lines.
WARNING: Coil (whether sweat or quick connect) is under 15
PSIG pressure.
Each coil will have an orifice installed in the fitting between the
liquid line connection and distributor. The orifice is identified on
a label next to the liquid connection as shown in Figure 6.
The orifice that is shipped with the coil is based on the “most
sold” combination, but it may have to be changed, depending
on the capacity and efficiency of the outdoor unit, elevation
differences, and/or long total line lengths. An additional ori-
fice(s) is shipped with most outdoor units in the literature packet
for the most commonly required replacement combinations.
Other sizes must be ordered from the Parts Department if
required.
Table 3 shows the orifice and charge adjustment for approved
system combinations (indoor coil/outdoor unit). See Applica-
tion Data,"General Piping Recommendations and Refrigerant
Line Lengths" for long line lengths and elevation differences.
If the orifice sizes match, nothing further is required and the
refrigerant lines may be connected per the outdoor unit instruc-
OUTDOOR UNIT E1FB / E9FB...
012
018
024
030
UNIT ORIFICE(S)
1
55
55
61, 63
67, 69
FACTORY R-22
CHARGE, LBS. OZ.
SWEAT
5-0
5-5
7-10
7-10
QUICK
4-9
4-14
7-3
7-3
INDOOR COIL
COIL
ORIFICE2
SYSTEM O ADDITIONAL CHARGE, OZ.
G3HC / G1FC018
55
55+9
55+0
-
-
G3HC / G1FC024
61
-
55+9
61+3
-
G3HC / G1FC030
69
-
-
63+13
69+15
G3HC / G1FC036
81
-
-
-
69+23
G3HC / G1FC042
78
-
-
-
-
G3HC / G1FC048
90
-
-
-
-
G3HC / G1FC060
96
-
-
-
-
G3US018
55
55+9
55+5
-
-
G3UA024
59
-
55+9
61+3
-
G3UA030
65
-
-
63+1
-
G3UA036
69
-
-
63+12
69+13
G3UA037
69
-
-
63+12
69+13
G3UA048
87
-
-
-
-
G3UA060
96
-
-
-
-
G3UA061
96
-
-
-
-
G2UT024
-
-
-
+3
-
G2UT036
-
-
-
-
+13
G2UT037
-
-
-
-
+13
G3CN030
65
55+28
55+23
63+11
67+20
G3CN042
73
-
-
-
-
G3CN060
87
-
-
-
-
F1SA / F1SF018
53
55+0
53+2
-
-
F1SA / F1SF024
61
-
55+3
61+0
-
F1SA / F1SF030
67
-
-
61+0
67+10
F1SA / F1SF036
81
-
-
-
67+14
1These orfices are packed in the instruction/warranty packet of each outdoor unit.
2
These orifices are factory-mounted in the flow control device of each indoor coil.
NOTE: Orifices in ( ) must be ordered from the Parts Department.
TABLE 3- ADDITIONAL R-22 CHARGE/ORIFICE SIZE
515.26-N1Y
6
Central Environmental Systems
