York YCUL0065EE - FIGURE 6 - Process and Instrumentation Diagram

JOHNSON CONTROLS
28
Form 150.63-NM9
Issue date: 5/20/2021
SECTION 2 – PRODUCT DESCRIPTION
Figure 6 - Process and Instrumentation Diagram
Process and instrumentation diagram
PS
Z CPR- 1
Z CPR- 2
Z CPR- 3
DV
HPL
HPC
P
DV
LPC
P
Condenser
Fans Fans
-YLLSV
S
T
Se e P.R.V .
Opt i ons
Comp r essors
Control Functions:
DV - Di sp l a y Val ue
CHT - Chilled Liquid Temper ature
HPC - High Pressur e Cutout
LPC - Low Pressure Cutout
HPL - High Pressur e Load Limiting
LTC - Low Temper ature Cutout
S
PS
T
Ambient Air Sen so r
DV
HTC
LT C
585 PSIG
650 PSIG
450 PSIG
Evaporator Coil
Pressure Relief Valve (ZP180 Scroll Only) *
Service (Ball) Valve
Expansion Valve
Solenoid Valve
Sight Glass
Sensor Pressure
or Temperature
Service (Stop) Access Valve
Pressure Switch
Filter Drier
(Removable Core)
Components:
* Smaller Compressor Scrolls Utilize Internal Reliefs.
Low pressure liquid refrigerant enters the cooler and
is evaporated and superheated by the heat energy ab-
sorbed from the chilled liquid passing through the
cooler shell. Low pressure vapor enters the compres-
sor where pressure and superheat are increased. The
high pressure vapor is fed to the air cooled condenser
coil and fans where the heat is removed. The fully con-
densed and subcooled liquid passes through the expan-
sion valve where pressure is reduced and further cool-
ing takes place before returning to the DX Coil.
LD13139