87
YORK INTERNATIONAL
FORM 201.18-NM8
REFRIGERANT FLOW DIAGRAM
Low pressure liquid refrigerant enters the cooler and is
evaporated and superheated by the heat energy absorbed
from the chilled water passing through the cooler shell.
Low pressure vapor enters the compressor where pres-
sure and superheat are increased. High pressure vapor is
passed through the oil separator where compressor oil is
removed and recirculated to the compressor via the oil
cooler. The high pressure oil-free vapor is fed to the Air-
cooled condenser coil and fans where the heat is removed.
A small percentage of the of the liquid passes through
an expansion valve, into the other side of the econo-
mizer where it is evaporated. This low pressure liquid
subcools the major part of the refrigerant. Medium pres-
sure vapor then returns to the compressor. The
subcooled refrigerant then passes through the expan-
sion valve where pressure is reduced and further cool-
ing takes place before returning to the cooler.
FIG. 38 – REFRIGERANT FLOW DIAGRAM
Low Pressure Liquid
Medium Pressure Vapour
Low Pressure Vapour
High Pressure Liquid
High Pressure Vapour
Oil
COMP - Compressor
CDR -Condenser Coil
CLR - Cooler
EC - Economizer (Added to some models)
OC - Oil Cooler
OS - Oil Separator
- Air Entering Compressor R-22 - Refrigerant Circuit Number
Thermostatic Expansion Valve
Balance Valve
Relief Valves
Angle Stop Valve
Sight Glass
Replaceable Core Filter Drier
Solenoid Valve
CH.W
IN
CH.W
OUT
CLR
RC2
COMP.
OS
CDR
OC
m /s
3
LD06896
7
Summary of Contents for eco2 YCAS0425EB
Page 26: ...26 YORK INTERNATIONAL This page intentionally left blank Product Description ...
Page 49: ...49 YORK INTERNATIONAL FORM 201 18 NM8 This page intentionally left blank 7 ...
Page 60: ...60 YORK INTERNATIONAL FIG 20 CONTINUED ELEMENTARY DIAGRAM Technical Data ...
Page 65: ...65 YORK INTERNATIONAL FORM 201 18 NM8 WIRING DIAGRAM WYE DELTA START LD03229 FIG 23 CONT D 7 ...
Page 66: ...66 YORK INTERNATIONAL FIG 23 CONTINUED ELEMENTARY DIAGRAM Technical Data ...
Page 68: ...68 YORK INTERNATIONAL FIG 24 POWER PANEL FRONT INSIDE VIEW WYE DELTA START Technical Data ...
Page 71: ...71 YORK INTERNATIONAL FORM 201 18 NM8 LD03282 LD03283 LD03284 FIG 27 DETAIL A 7 ...
Page 74: ...74 YORK INTERNATIONAL FIG 32 DETAIL B Technical Data LD03285 ...
Page 75: ...75 YORK INTERNATIONAL FORM 201 18 NM8 FIG 33 DETAIL C 7 3 4 5 6 7 8 5 6 3 4 7 8 9 10 LD06841 ...