Quantech QCC3, Manual

Page: 17 / 60

FORM QCC3-EG1 (517)
QUANTECH 17
Selection Data (Cont'd)
TABLE 4 - REFRIGERANT LINE CONNECTIONS
MODEL
NUMBER
QCC3
TONS
SYSTEM
NUMBER
REFRIGERANT LINE
CONNECTION
SUCTION LINE LIQUID LINE
COPPER
TYPE L
INCHES OD
VELOCITY
@ NOMINAL
CAPACITY
IN FPM
NOMINAL
TONS
UNLOADED
COPPER
TYPE L
INCHES OD
SUCTION LIQUID
080CZE 81.3
1 2.7 1.1 2-5/8 1656 13.5 1-1/8
2 2.7 1.1 2-5/8 1656 3.5 1-1/8
085CZE 84.3
1 2.7 1.1 2-5/8 1818 14.9 1-1/8
2 2.7 1.1 2-5/8 1572 13.2 1-1/8
090CZE 91.1
1 2.7 1.1 2-5/8 1812 14.9 1-1/8
2
2.7 1.1 2-5/8 1896
14.9 1-1/8
100CYE 98.5
1 2.7 1.1 2-5/8 1896 14.9 1-1/8
2 2.7 1.1 2-5/8 1896 14.9 1-1/8
110CYE 111.5
1
2.7 1.1 2-5/8 1812
14.9 1-1/8
2
2.7 1.1 2-5/8 2598
33.6 1-1/8
130CZE
131.5
1 2.7 1.1 2-5/8 2658 32.8 1-1/8
2 2.7 1.1 2-5/8 2658 32.8 1-1/8
145CZE 145.3
1 3.1 1.4 3-1/8 2790 31.3 1-3/8
2 2.7 1.1 2-5/8 1926 14.9 1-1/8
160CZE 158.3
1 3.1 1.4 3-1/8 2658 30.7 1-3/8
2 2.7 1.1 2-5/8 2556 33.1 1-1/8
1. Based on R-410A at the nominal capacity of the unit or system, an ambient temperature of 95°F (35°C) and a suction temperature of 45°F
(7.2°C).
2. Suction line sizes were calculated based on a nominal maximum pressure drop to 3 PSI/100 ft. (20.7 kPa/30.5 m). When calculating suc-
tion line pressure drop for a specific application, it should be noted that system capacity decreases as suction line pressure drop increases.
3. Nominal Tons (KW) Unloaded is based on one compressor (per system) operating at design conditions.
4. Based on minimum compressor staging for the given pipe size, a double suction riser should be used to ensure proper oil return to the
compressor on all vertical suction risers. Oil returning up the riser moves up the inner surface of the pipe and depends on the mass velocity
of the refrigerant vapor at the wall surface to move the oil up the vertical rise.
5. Hot gas bypass lines are typically 7/8” for lines up to 40 feet and 1-1/8” for lines over 40 feet in length (12 meters). The field connections siz -
es are 7/8” for the optional factory mounted hot gas bypass valve. Note: Hot gas bypass is only available for refrigerant system number 1.
6. For more information, please refer to either the YORK DX Piping Guide (Form 050.40-ES2) or the ASHRAE Refrigertion Handbook.
Refrigerant Piping Notes