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TXV — Thermostatic
Expansion Valve
Location of One Liquid Line Solenoid
Valve Serving 2 Coil Circuits
(Solenoid Drop Control)
Face-Split Coil Suction and
Liquid Line Piping
APPLICATION DATA — 566D150-240, 566E150-240 (cont)
TXV — Thermostatic
Expansion Valve
REFRIGERANT PIPING SIZES
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
0-15
16-25
UNIT
566D
L
S
L
150
/
1
/
/
1
1
1
2
8
2
180
1
/
1
3
/
5
/
2
8
8
240
5
/
1
5
/
5
/
8
8
8
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
0-25
UNIT
566E
L
S
150
/
1
/
1
1
2
8
180
/
1
/
1
3
2
8
240
1
/
1
3
/
2
8
LEGEND
L — Liquid
S — Suction
Close-coupled.
*Requires a double suction riser if 2 unloaders are used and the evaporator is
below the condensing unit. See Refrigerant Piping Sizes — Double Suction Ris-
ers table and Suction Line Piping figure below for more information.
NOTES:
1. Pipe sizes are based on a 2° F loss for liquid lines and a 1.5° F loss for suc-
tion lines.
2. Pipe sizes are based on an equivalent length equal to the maximum length
of interconnecting piping plus 50% for fittings. A more accurate estimate
may result in smaller sizes.
REFRIGERANT PIPING SIZES —
DOUBLE SUCTION RISERS
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
51-75
UNIT
566D
A
150
1
1
/
8
180
—
NOTES:
1. See Suction Line Piping figure below for "A," "B," and "C" dimensions.
2. No double suction risers are needed for unit size 240.
A
B
C
D
Suction Line Piping
55
26-50
51-75
Line Size (in. OD)
S
L
S
L
S
1
/
/
1
/
/
1
/
*
3
5
3
5
5
8
8
8
8
8
1
3
/
5
/
1
5
/
7
/
1
5
/
8
8
8
8
8
1
5
/
7
/
1
5
/
7
/
2
1
/
8
8
8
8
8
25-50
50-75
Line Size (in. OD)
L
S
L
S
/
1
/
/
1
/
1
1
1
1
2
8
2
8
/
1
/
/
1
/
1
3
1
3
2
8
2
8
1
/
1
3
/
5
/
1
3
/
2
8
8
8
76-100
Line Size (in. OD)
B
C
A
B
1
3
/
1
5
/
1
1
/
1
3
/
8
8
8
—
—
1
3
/
1
5
/
8
LEGEND
Suction Riser Without Trap
Suction Riser With Trap
Suction Line to Condensing Unit
Short Vertical Riser Into Condensing Unit:
566D150,180 — 1
3
/
in. OD
8
76-100
L
S
/
1
/
*
7
5
8
8
7
/
2
1
/
*
8
8
7
/
2
1
/
8
8
75-100
L
S
/
1
/
1
1
2
8
/
1
/
5
3
8
8
5
/
1
3
/
8
8
C
1
5
/
8
8
2
1
/
8
8
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