York MILLENNIUM User manual

INSTALL., OPERATION & MAINT.
MILLENNIUM
®
REMOTE CONTROL CENTER
FOR STYLE F AIR-COOLED SCREW CHILLER
New Release Form 201.18-NM1.2 (300)
28376A
NEW
EXPANDED USER GUIDE INCLUDED
See Section 3

YORK INTERNATIONAL
2
TABLE OF CONTENTS
SECTION 1RCC HARDWARE AND SETUP ........................................... 3
General.............................................................................................................. 3
Mounting .......................................................................................................... 3
Printer Connection............................................................................................ 3
Installation Checklist ........................................................................................ 3
Wiring ............................................................................................................... 3
Communications ............................................................................................... 4
Keypad Operation............................................................................................. 4
Parts List For RCC Option – YCAS CHILLER .............................................. 4
Programming Setup at the Chiller .................................................................... 4
At the RCC ....................................................................................................... 4
EPROM Version Display.................................................................................. 4
Power Loss ....................................................................................................... 4
Printer ............................................................................................................... 8
SECTION 2RCC OPERATION .................................................................. 9
Getting Started................................................................................................. 9
Remote Programming ....................................................................................... 9
System Status.................................................................................................... 9
System Operating Data ..................................................................................... 10
System Operating Data Readouts ..................................................................... 10
Printing ............................................................................................................. 10
System Faults / Shutdowns............................................................................... 10
SECTION 3 REFRIGERATION OVERVIEW ........................................... 11
Checking for Proper Operation......................................................................... 11
Refrigeration Cycle........................................................................................... 11
System Operating Data Form ........................................................................... 15
Pressure / Temperature Chart ........................................................................... 16
SECTION 4YORK SERVICES OFFICES................................................. 19
LIST OF FIGURES
1 RCC Wiring Connectionss ...................................................................... 6
2 Remote Control Center Installation Details ............................................ 7
3 Printer Wiring.......................................................................................... 8
4 Refrigerant Flow Diagram ...................................................................... 13
5 System Data Monitored by RCC............................................................. 14
6 Vapor-Compression Refrigeration Cycle ................................................ 17
Fig. Page
Page

FORM 201.18-NM1.2
3
YORK INTERNATIONAL
SECTION 1 – RCC HARDWARE AND SETUP
GENERAL
The YORK Remote Control Center option (371-02485-
102) provides chiller operating data and control from a
remote location. This data includes system status, op-
erating information, fault information, and chiller oper-
ating history at the push of a key.
All data is displayed on a 40 character backlit LCD
display (2 lines of 20 characters) and is accessed by a
soft touch keypad. The keypad and display are built
into an 8" x 10" x 2-1/2" (203 mm x 254 mm x 64 mm)
NEMA-1 enclosure to be wall mounted indoors.
The Remote Control Center is also designed to enable
the user to obtain a printout directly from the remote
panel, simplifying the data logging procedure.
One (1) Remote Control Center (RCC) is needed for
remote control and monitoring of each screw chiller.
This RCC manual must be used in conjunction with
the chiller Installation, Operation, Maintenance
Manual,(IOM)Form 210.18-NM1,which is included
with each chiller. Additional copies can be purchased
through the (York) Baltimore Parts Center, Baltimore
MD. Phone [phone].
The Remote Control Center can not
be used with a Millennium ISN Sys-
tem.
MOUNTING
Mount the Remote Control Center at the desired loca-
tion and attach it securely. The panel may be mounted
away from the chiller as far as 4000 ft. (1219 m) of
wiring will allow.
PRINTER CONNECTION
The printer communicates through the RCC RS 232
port, which are terminals at TB2 marked TXD, RXD,
and DGND, as shown on page 6.
INSTALLATION CHECKLIST
REFER TO INSTALLATION/CONNECTION
DIAGRAMS, PAGES 6-7.
• 24VAC Power Supply (included)
• 2 conductor shielded cable with shield connected
at RCC only. (user supplied)
• At RCC, red wire on 485+ and black wire on 485–.
• At RCC, shield and grnd connected and jumpered.
• 180 ohm resistor installed at RCC or micro; never
at both.
• At chiller, red wire on BAS+ and black wire on
BAS–.
• At chiller, use “PROGRAM’ and ‘ENTER” to ac-
cess and select REMOTE as type of control mode.
• Correct eprom installed at chiller and RCC
See page 4 for eprom versions.
WIRING
Operating voltage requirement for the remote panel is
24VAC, supplied by a wall mounted transformer (in-
cluded with RCC). The transformer is wired into the
remote panel at TB1, as shown in Fig. 1.
A communications cable must connect the chiller to
the remote panel. This cable should be a twisted pair
shielded cable, type Alpha 4562, Beldon 9320, or
Quabbin 930421-2. The cable length must not exceed
4000 ft. (1219 m).
At the RCC, assure that the 180 ohm resistor is con-
nected between terminals 1 and 2 of the TB2 connec-
tor. Also, assure that a jumper connects terminals 3 and
4. See Fig. 1.
Place the J19 jumper on the Microprocessor Board in
the RS-485 position.
Never run the communication cable
in close proximity to any power wir-
ing. For best results, it should be run
in dedicated, grounded
conduit.
1

YORK INTERNATIONAL
4
RCC HARDWARE AND SETUP – CONT’D
PARTS LIST FOR RCC OPTION - YCAS CHILLER
QTY. DESCRIPTION YORK PART NO. REMARKS
1 RCC Unit 371-02485-102 Included
1 RCC EPROM 031-02016-001 Included*
2 LTP Trans. Protect Mod. 031-01586-000 Included
Ft Commun. Cable Alpha 4562 or Beldon 9320 User Supplied
1 15V/24VAC Trans. 025-29917-001 Included
1 220V/24VAC Trans. 025-29917-002 YORK Option
OPTIONAL PRINTER
1 Printer, Dot Matrix Model 1220 Weight-Tronix**
* RCC option requires new chiller eprom 031-01798-RCC, in-
cluded
** Weigh-Tronix, Inc., Santa Rosa, CA. Phone: [phone]
Fax: [phone] See page 8 for more info.
RCC Hardware and Setup
COMMUNICATIONS
Communications between the chiller and the remote
chiller will be limited to once every 16 seconds. This
results in a time lag in displays as well as time lags in
commands to the chiller from the Remote Control Cen-
ter. Keep this in mind when using the remote panel. In
addition, when power is first applied to the remote
panel, a time lag of 30 sec. to 2 min. may be required
before initial communications is established.
KEYPAD OPERATION
ARROW KEYS
During programming, these keys will increase or de-
crease the numerical value appearing on the display.
During normal viewing of data, the arrow keys are used
to scroll up or down through the data fields.
ENTER/
ADV
Enter key is used to store new values into memory.
Other keys on the unit are self explanatory.
↓↑
PROGRAMMING SETUP AT THE CHILLER
Press the PROGRAM key and scroll by repeatedly
touching the ENTER key. At the display titled
“COMMUNICATIONS MODE” select LOCAL or
REMOTE using the arrow keys.
AT THE RCC
No programming setup is required.
EPROM VERSION DISPLAY
At the RCC, touch the HISTORY key followed by the
down arrow. Press arrow key 2x to see chiller eprom
version.
At the chiller, touch the OPER DATA and the * key to
display the eprom version.
The RCC should have the number 12 in the version
format CXXX. 12.XX A two compressor chiller should
have the number 09; and a chiller that has three or four
compressors should have the number 10 in the version
format.
Note that the last two digits will vary as changes are
made to the software.
POWER LOSS
In the event of a power loss to the Remote Control Cen-
ter, the microprocessor in the chiller control panel will
continue to adhere to the setpoints and commands dic-
tatedfrom the Remote Control Centerpriorto the power
loss for five minutes. At the end of the five-minute pe-
riod,thechillerwillreverttolocalcontrol if communica-
tion is not re-established. When communications are
re-established after power is returned, the chiller will
honor all commands programmed into the Remote Con-
trol Center.
In the case of a remote shutdown before the power loss
occurred, the chiller may start on local control, if de-

FORM 201.18-NM1.2
5
YORK INTERNATIONAL
RCC HARDWARE AND SETUP –CONT’D
mand exists, after five minutes. The chiller will con-
tinue to run until demand shuts it off or until commu-
nication is re-established. When communication re-
turns, the chiller will shut down, honoring the remote
shutdown that was commanded prior to the communi-
cations loss. The ability to do this is built into the chiller
micro, which remembers the setpoints/control com-
mands established before the communications loss.
A LOSS OF COMM LINK TO AC SCREW PANEL
message indicates that the communications link be-
tween the chiller MicroComputer Control Center and
the Remote Control Center has been lost. This loss of
communications can be the result of a disconnect in
the communications cable between the two panels; the
loss of power to the chiller control panel; or a faulty
communications driver chip. These driver chips are lo-
cated on the chiller microboard at location U24, and
on the RCC microboard at location U15. On the chiller,
RS-485 and RS-232 driver chips at U24 and U59 re-
spectively, can be interchanged whenthe RS-232printer
port is not being utilized. At RCC, board replacement
is required. If communications are lost and not re-estab-
lished after 5 minutes, local chiller setpoints (those pro-
grammed at the chiller panel) will command the chiller.
1

YORK INTERNATIONAL
6
LD02734
FIG. 1 – RCC WIRING CONNECTIONS
RCC HARDWARE AND SETUP –CONT’D
RCC Hardware and Setup

FORM 201.18-NM1.2
7
YORK INTERNATIONAL
LD02733
FIG. 2 – REMOTE CONTROL CENTER INSTALLATION DETAILS
RCC HARDWARE AND SETUP –CONT’D
1

YORK INTERNATIONAL
8
LD02722
FIG. 3 – PRINTER WIRING
RCC HARDWARE AND SETUP –CONT’D
PRINTER
The optional printer combined with the RCC option
allows the operator to obtain a remote printout through
the RCC device. The printer to RCC distance should
be limited to 25 ft.
A Weigh-Tronix 1220 Dot Matrix printer, No.
950915576 is recommended. Est. cost $179.40
Cable part 287040018 (25' Long) must also be ordered
also. Est. cost $40. 00
Note:Part of this cableincludesa 6" pigtail plugadapter
which connects to screw terminals at TB2 of the RCC,
or to TB8 on the chiller when no RCC is used. Extra
pigtails can be ordered and then left in the chiller to
allow quick printer connect/disconnect feature. Order
extra adapter 957012582. Cost is $10.
Printerspecs:Defaultsettingsare1200 Baud, 8 data bits,
noparity, 1500 character buffer. Replacement paper: Std.
adding machine, non-thermal, 2-1/4W x 2-3/4D, inner
roll is .44" ID; No. 223350026. Replacement Ribbon:
Recommend change every second roll of paper: Epson
ERC-09; No. 223320029. Weight-Tronix has a
‘Handipak’ combination which includes 4 rolls and 2
ribbons at approx. $11.50.
Printer and parts are sold through Weigh-Tronix only.
Contact information:
Weigh-Tronix, Inc.
2320 Airport Blvd.
Santa Rosa, CA 95403
Ph. 1-800-982-6622 Domestic
Fax [phone] Domestic
Ph. [phone] International
Fax [phone] International
Note: Prices reflect 1999 and may change with time.
RCC Hardware and Setup

FORM 201.18-NM1.2
9
YORK INTERNATIONAL
SECTION 2 –RCC OPERATION
GETTING STARTED
When first powered, the message LOSS OF COMM
LINK TO AC SCREW PANEL will appear on the RCC
display. It will disappear when communications are es-
tablished in 30 seconds or less. (If backlight is on but
no display message appears, ribbon cable to display
may be on incorrectly or display is faulty.)
The PLEASE WAIT,,,,, INITIALIZING REMOTE
message will appear next. When this step is completed,
a status message will appear. Unit is then ready for
operation. See page 38 of IOM for chiller operation.
REMOTE PROGRAMMING
COOLING LOAD ON
SETPOINTS LIMIT OFF
Chilled liquid temperatures (Cooling setpoints), Daily/
Holiday Schedule (key not shown), and Load Limiting
(HighMotor Current Unload) setpoints andOn/Off con-
trol can be programmed from the RCC unit.
All other parameters may only be monitored from the
RCC; programming must be done at the chiller.
Full details of the above programmable features are
found near pages 126-131 of the Installation, Opera-
tion, Maintenance Manual, Form 201.18-NM1.*
* A copy of this manual is provided with each chiller.
Extra manuals can be obtained through the (York) Bal-
timore Parts Center, Baltimore MD. Ph 1-800-9321701.
SYSTEM STATUS STATUS
The STATUS KEY will display a single message relat-
ing to the control status of the chiller or the RCC. ‘Gen-
eral’ status messages are shown below. Additional de-
tails are provided in the IOM.
General status messages can be the following:
UNIT SWITCH OFF (switch located on front panel)
DAILY SCHEDULE SHUTDOWN (daily schedule
pre-programmed function)
REMOTE CONTROLLED SHUTDOWN (chiller shut
down by manual OFF signal initiated from RCC)
NO RUN PERMISSIVE (flow switch open; no water
flow OR external device in series when flow switch is
open)
SYS SWITCH OFF (system toggle switches located
on microboard in off position)
NO COOL LOAD (indicates cooling demand rate does
not yet warrant running this system OR loading se-
quence has not progressed far enough to start this sys-
tem – often seen during the first few minutes of opera-
tion)
COMP RUNNING (compressor on)
PUMPING DOWN (pumpdown sequence at start up
or after shutdown in progress)
AR TIMER (6 minute anti-recycle timer allows time
for motor to cool sufficiently between compressor
starts)
AC TIMER (2 minute anti-coincident timer prevents
two compressors from starting at same time)
DISCH LIMITING (discharge pressure has reached the
programmable ‘discharge pressure unload’ setpoint)
SUCT LIMITING (suction temperature has reached a
point where icing may occur on the evap tubes)
CURR LIMITING (motor current has reached the pro-
grammable ‘high motor current unload’ setpoint)
EMS LIMITING (motor current has reached the motor
current unload setpoint determined by an external sig-
nal. See pg. 130 of IOM)
MANUAL OVERRIDE (manual override function
initiated at chiller keypad; setpoints at chiller will con-
trol)
2

YORK INTERNATIONAL
10
RCC OPERATION –CONT’D
SYSTEM OPERATING DATA OPER DATA
Touching the OPER DATA key will allow the operator
to display current chiller operating conditions shown
below. To scroll through the data, repetitively press the
up arrow key to scroll forward, or the down key to go
back. An RCC READOUT DIAGRAM provided on
page 14 shows the RCC readout source locations.
SYSTEM OPERATING DATA READOUTS
LCHLT = ____________________ °F (°C) (actual)
RCHLT = ____________________ °F (°C) (actual)
AMBIENT AIR TEMP __________ °F (°C) (actual)
EVAP WATER PUMP STATUS ON/OFF
EVAP HEATER STATUS ON/OFF
COMP (MC)_________________________ % FLA
HOURS = _________________ (cumulative total)
STARTS = _________________ (cumulative total)
SYS RUN TIME (DAYS, HOURS, MIN, SEC)
(run time since last off cycle)
OIL PRESSURE =_____________ PSIG (BAR G)
SUCTION PRESSURE (SP) ______ PSIG (BAR G)
DISCHARGE PRESSURE (DP) ___ PSIG (BAR G)
SUCTION TEMP (ACTUAL) = __________ °F (°C)
DISCH TEMP (ACTUAL) = _____________ °F (°C)
OIL TEMP = ________________________ °F (°C)
SUCT TEMP (SATURATED) = __________ °F (°C)
SUCT SUPER HEAT = ________________ °F (°C)
DISCH TEMP (SATURATED) = _________ °F (°C)
DISCH SUPER HEAT = _______________ °F (°C)
SLIDE VALVE STEP = ________________
COOLER INLET REFRIG TEMP ________ (R-407C only)
LLSV STATUS ON / OFF
ECONO TXVSOL STATUS ON / OFF
FAN STAGE (see page 134 of IOM)
COMPRESSOR HEATER ON / OFF
WYE- DELTA ON / OFF
PRINTING
A printout of the operating data can be obtained when
the optional printer is purchased and installed. Print-
outs or recordings should be taken on a regular basis as
part of a normal maintenance schedule. They should
then be reviewed by a competent technician for ab-
normal trends or parameters.
Whenthe PRINT key is pressed,thedisplay will prompt
the operator to select either the OPER DATA or the
HISTORY to print. Selection is made by touching ei-
ther key. A history print command will print all 6 faults,
described below. When a printer is connected and a
fault occurs, a printout will be initiated automatically.
OPER DATA HISTORY
SYSTEM FAULTS / SHUTDOWNS
When the HISTORY key is pressed, the display will
prompt the operator to choose a number 1-6. These
numbersrepresent ‘safety shutdowns,’ whichareevents
(fault shutdowns) that caused the chiller to shut down.
The chiller can store up 6 events, with number 1 event
being the most recent.
To select which event to display, press the ↑key until
the desired event number appears, followed by the
ENTER key. To scroll through the data, repetitively
press the up arrow key to scroll forward, or the down
arrow key to go back.
Automatic restart will normally occur after a shutdown.
However, the operating data should be reviewed for
system trends and abnormalities. Should a fault reoccur
3 times within a 90 minute period, the unit will NOT
restart. In this event, a service technician should be
called to investigate and correct the problem.
The history data provides a snapshot of the operat-
ing conditions at the instant the fault shutdown oc-
curred. This data is often valuable information when
determining the root cause of a shutdown and in mak-
ing timely repairs.
A ‘LOCKED OUT’ fault message may appear at the
RCC when fault information is not available or when a
data transmission error occurs.
Full details on fault messages and resetting are given
in the IOM near pages 107-110. Troubleshooting guide
is found near pages 140-142.
RCC Operation

FORM 201.18-NM1.2
11
YORK INTERNATIONAL
SECTION 3 –REFRIGERATION OVERVIEW
3
CHECKING FOR PROPER OPERATION
Recognition of normal and abnormal trends in system
pressures, temperatures, motor current percentage, and
slide valve position can help ensure reliable operation
and avoid costly equipment down time. The RCC op-
tion allows owners/operators/maintenance to easily
monitor the system data and spot these trends. When
abnormalities are suspected, easy access to system data
can help identify the root cause of the problem and
speed the repair process.
Maintaining a record of system data unique to your
chiller on a weekly basis, or even a daily basis on criti-
cal applications, is recommended. A form is provided
on page 15 that can be copied and used for data re-
cording. Records should be kept in a secure binder.
Normal readings taken under several various ambient
and load conditions should be identified and marked
as a baseline reference. These can then be used for com-
parison and trend spotting purposes.
Aprinter can also be used formaintaining records.Hand
written entries should be made on the printouts to help
identify particular variables and trends of interest.
A better understanding of the system data provided by
the RCC can be had when the refrigeration cycle is
understood. A review of the cycle is provided.
REFRIGERATION CYCLE
The refrigeration cycle description that follows can be
traced on the refrigerant flow diagram, Figure 4, page
13, for an R-22 YCAS F water chiller.
The refrigerant ‘change of state,’ as it changes from
liquid to vapor, then back to liquid, is the key compo-
nent in this heat transfer process. How is this accom-
plished? A simplified answer is given.
The mechanics of a typical refrigerating machine in-
clude these four main components.
A. Evaporator
B. Compressor
C. Condenser
D. Expansion Valve
These components have the following basic functions:
A. In the evaporator, cold refrigerant travels through
hundreds of copper tubes. Water passes over the
cold outer surface of these tubes, thus chilling the
water.
B. The compressor acts like a pump. It increases the
pressure of the refrigerant vapor, and moves the
refrigerant through the system.
C. The condenser acts like a radiator in an automo-
bile, in that it removes heat from the engine and
transfersit to the outside air.In a refrigeration cycle,
the condenser cools (removes heat) the refrigerant
vapor which is heated as a result of the intense com-
pression (pumping) process of the compressor.
D. The expansion valve acts like a pressure reduc-
ing,flow controlnozzle. The expansion valve will
automatically regulate the flow of refrigerant based
on the superheat value at the compressor inlet. This
is very important in order to ensure that only cool
vapor goes back into the compressor, and not liq-
uid, as liquid refrigerant intake will cause damage
to the compressor and/or oil dilution.

YORK INTERNATIONAL
12
REFRIGERATION OVERVIEW –CONT’D
Follow the flow diagram on page 13:
1. Cold, low pressure refrigerant, (low is typically
55-75 PSI for example) in a mix form of liquid and
vapor, enters the cooler tubes and evaporates (va-
porizes) as it chills the tubes and absorbs heat from
the water passing over the tubes. During this trans-
fer of energy, the water temperature drops, accom-
plishing the system objective.
2. Cool,lowpressurevaporisdrawnfrom the evapora-
torand into the compressor,wherepressure, and sub-
sequentlythetemperature,are increased. (High pres-
sure typically is in the 150-340 + PSI range).
3. The hot, high pressure vapor exits the compressor
and flows through an oil separator, then into the
condenser, warming the coils. The hot coils then
transfer heat from the vapor to the outside air that
is travelling through the coils. As the gas cools, it
condenses into a liquid. (Visible through the sys-
tem sight glass).
4. With sufficient cooling, a stream of warm, high
pressure pure liquid refrigerant exits the condenser.
It is then fed to an expansion valve, which controls
theflow of liquid refrigerant thatisfed to the evapo-
rator.
5. A large change in system pressure, and subse-
quently, a change in temperature, occurs as the liq-
uid flows through the expansion valve. (See P-T
chart, page 16. Note temperature change as pres-
sure changes from 200 PSI to 60 PSI). This results
in a spray of cold, low pressure refrigerant, part
liquid, part vapor, exiting the expansion valve. This
cool mix then enters the cooler tubes, evaporates
completely, and the cycle is then repeated.
6. On some models, a smallpercentage ofthe of refrig-
erantis drawn offthe mainliquid refrigerantstream,
and fed to a small heat exchanger, called an econo-
mizer. This objective is to further cool the main
stream of liquid refrigerant being fed to the TXV.
This adds more load capacity to the system (at high
loads only).
Refrigeration Overview

FORM 201.18-NM1.2
13
YORK INTERNATIONAL
FIG. 4 – YCAS F REFRIGERANT FLOW DIAGRAM
REFRIGERANT FLOW DIAGRAM
YCAS STYLE F SCREW CHILLER
Single refrigerant circuit shown for simplicity.
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 ValveSolenoid Valve
Balance Valve
Relief Valves
Angle Stop Valve
Sight Glass
Replaceable Core Filter Drier
Solenoid Valve
CH.W
IN CH.W
OUT
CLR
RC2
EC COMP.
OS
CDR
OC
m /s
3
LD05019
15
A
D
2
COOL
GAS
B
OIL
6
4C3
LIQUID m2/s
HOT
GAS
SIGHT
GLASS 3

YORK INTERNATIONAL
14
LD05446
FIG. 5 –SYSTEM DATA MONITORED BY RCC
SYSTEM DATA MONITORED BY THE RCC
CH.W
IN
RCHLT ˚F
CH.W
OUT
LCHLT ˚F
CLR
RC2
EC COMP.
OS
CDR
OC
FAN STAGES
AMBIENT
AIR TEMP
OIL PRESS
OIL TEMP
m2/s
ECONO TXV
LLSOLV
On / Off
SUCTION PRESS,
TEMP,
S. HEAT DISCH PRESS,
TEMP,
S. HEAT
Compressor Info.
MC % FLA
HOURS
STARTS
RUN TIME
SV STEP 0 - 75
WYE-DELTA On / Off
EVAP PUMP
STATUS
On / Off
////EVAP HEATER\\\\ On / Off
LLSOLV
On / Off
HOT
GAS HOT
OIL
COOL
GAS
LIQUID
REFRIG.
COOL OIL
Refrigeration Overview

FORM 201.18-NM1.2
15
YORK INTERNATIONAL
SYSTEM OPERATING DATA FORM
SYSTEM 2
2 OIL PRESSURE = __________PSIG (BAR G)
2 SUCTION PRESSURE ______PSIG (BAR G)
2 DISCHARGE PRESSURE____PSIG (BAR G)
2 SUCTION TEMP =________________°F (°C)
2 DISCH TEMP = __________________°F (°C)
2 OIL TEMP = _____________________°F (°C)
2 SAT SUCT TEMP = _______________°F (°C)
2 SUCT SUPER HEAT = ____________°F (°C)
2 SAT DISCH TEMP = ______________°F (°C)
2 DISCH SUPER HEAT = ____________°F (°C)
2 SLIDE VALVE STEP = __________________
2 COOLER INLET REFRIG TEMP
= ______ °F (°C) (R-407C only)
2 LLSV STATUS ON / OFF
2 ECON TXVSOL STATUS ON / OFF
2 FAN STAGE __________________________
2 COMPRESSOR HEATER ON / OFF
2 WYE-DELTA ON / OFF
CHILLER ______________________ R-22
SETPOINT ________________________
RANGE +/- ________________________
Notes:
SYSTEM 1
1 OIL PRESSURE = __________PSIG (BAR G)
1 SUCTION PRESSURE ______PSIG (BAR G)
1 DISCHARGE PRESSURE____PSIG (BAR G)
1 SUCTION TEMP =________________°F (°C)
1 DISCH TEMP = __________________°F (°C)
1 OIL TEMP = _____________________°F (°C)
1 SAT SUCT TEMP = _______________°F (°C)
1 SUCT SUPER HEAT = ____________°F (°C)
1 SAT DISCH TEMP = ______________°F (°C)
1 DISCH SUPER HEAT = ____________°F (°C)
1 SLIDE VALVE STEP = __________________
1 COOLER INLET REFRIG TEMP
= _______ °F (°C) (R-407C only)
1 LLSV STATUS ON / OFF
1 ECON TXVSOL STATUS ON / OFF
1 FAN STAGE __________________________
1 COMPRESSOR HEATER ON / OFF
1 WYE-DELTA ON / OFF
SYSTEM OPERATING DATA
LCHLT = _________________________°F (°C)
RCHLT = ____ °F (°C) ________ °F (°C) TD
AMBIENT AIR TEMP _______________°F (°C)
EVAP WATER PUMP STATUS ON / OFF
EVAP HEATER STATUS ON / OFF
COMP 1 (MC) _____________________ % FLA
COMP 2 (MC) _____________________ % FLA
HOURS 1 = ____________________________
STARTS 1 = ___________________________
HOURS 2 = ____________________________
STARTS 2 = ___________________________
RUN TIME
SYS 1 ______ - _______ -_______ - ______
DAYS HOURS MIN SEC
SYS 2 ______ - _______ - ________- _____
DAYS HOURS MIN SEC
3

YORK INTERNATIONAL
16
PRESSURE / TEMPERATURE CHART
Refrigeration Overview
Borders mark typical operating ranges that can be expected
for suction and discharge pressures under moderate to full
load, 44°F setpoint, with ambient air temperatures between
90-100°F. This is only a guideline and readings beyond these
ranges will occur.
Vapor entering compressor should be superheated 12-15°F.
Liquid from condenser should be subcooled 12-15°F. Econo-
mizer heat exchanger will provide up to an additional 20-28°F
of sub-cooling when in operation.
This chart shows characteristics of Refrigerant R-22 (Monochlorodifluoromethane) when in the ‘saturated’ state.
Temperature (F) Pressure (PSI
92 173.7
94 179.1
96 184.6
98 190.2
100 195.9
102 201.8
104 207.7
106 213.8
108 220.0
110 226.4
112 232.8
114 239.4
116 246.1
118 252.9
120 259.9
122 267.0
124 274.3
126 281.6
128 289.1
130 296.8
132 304.6
134 321.5
136 320.6
138 328.3
140 337.3
142 345.8
144 354.5
146 363.3
148 372.3
150 381.5
152 390.8
154 400.3
156 410.0
158 419.8
160 429.8
Temperature (F) Pressure (PSIG)
0 24.0
2 25.6
4 27.3
6 29.1
8 30.9
10 32.8
12 34.7
14 36.7
16 38.7
18 40.9
20 43.0
22 45.3
24 47.6
26 50.0
28 52.4
30 54.9
32 57.5
34 60.1
36 62.8
38 65.6
40 68.5
42 71.5
44 74.5
46 77.6
48 80.8
50 84.0
52 87.4
54 90.2
56 94.3
58 97.9
60 101.6
62 105.4
64 109.3
66 113.2
68 117.3
70 121.4
72 125.7
74 130.0
76 134.5
78 139.0
80 143.6
82 148.4
84 153.2
86 158.2
88 163.2
90 168.4
SUCTION DISCHARGE

FORM 201.18-NM1.2
17
YORK INTERNATIONAL
LD05447
3
FIG. 6 – VAPOR-COMPRESSION REFRIGERATION CYCLE

YORK INTERNATIONAL
18
This page intentionally left blank.

FORM 201.18-NM1.2
19
YORK INTERNATIONAL
SECTION 4 –YORK SERVICES OFFICES (NORTH AMERICAN)
ALABAMA
Birmingham
YORK International Corp.
[phone]
ARIZONA
Phoenix
YORK International Corp.
[phone]
CALIFORNIA
Los Angeles
YORK International Corp.
[phone]
San Francisco
YORK International Corp.
[phone]
COLORADO
Denver
YORK International Corp.
[phone]
CONNECTICUT
Danbury
YORK International Corp.
[phone]
FLORIDA
Miami
YORK International Corp.
[phone]
Tampa
YORK International Corp.
[phone]
Orlando
YORK International Corp.
[phone]
GEORGIA
Atlanta
YORK International Corp.
[phone]
HAWAII
Honolulu
YORK International Corp.
[phone]
ILLINOIS
Chicago
YORK International Corp.
[phone]
INDIANA
Indianapolis
YORK International Corp.
[phone]
KENTUCKY
Louisville
YORK International Corp.
[phone]
LOUISIANA
New Orleans
YORK International Corp.
[phone]
MARYLAND
Baltimore/Washington
YORK International Corp.
[phone]
MASSACHUSETTS
Boston
YORK International Corp.
[phone]
MICHIGAN
Detroit
YORK International Corp.
[phone]
MINNESOTA
Minneapolis
YORK International Corp.
[phone]
MISSOURI
Kansas City
YORK International Corp.
[phone]
St. Louis
YORK International Corp.
[phone]
NEW JERSEY
Newark
YORK International Corp.
[phone]
NEVADA
Las Vegas
YORK International Corp.
[phone]
NEW YORK
Buffalo
YORK International Corp.
[phone]
New York
YORK International Corp.
[phone]
NORTH CAROLINA
Charlotte
YORK International Corp.
[phone]
Greensboro
YORK International Corp.
[phone]
Raleigh
YORK International Corp.
[phone]
OHIO
Cincinnati
YORK International Corp.
[phone]
Cleveland
YORK International Corp.
[phone]
Columbus
YORK International Corp.
[phone]
PENNSYLVANIA
Philadelphia
YORK International Corp.
[phone]
Pittsburgh
[phone]
York
YORK international Corp. (HQ)
[phone]
SOUTH CAROLINA
Greenville
YORK International Corp.
[phone]
TENNESSEE
Kingsport
YORK International Corp.
[phone]
Nashville
YORK International Corp.
[phone]
TEXAS
Austin
YORK International Corp.
[phone]
Dallas
YORK International Corp.
[phone]
Houston
YORK International Corp.
[phone]
San Antonio
YORK International Corp.
[phone]
UTAH
YORK International Corp.
Salt Lake City
[phone]
VIRGINIA
Richmond
YORK International Corp.
[phone]
Newport News
[phone]
WASHINGTON
Seattle
YORK International Corp.
[phone]
YORK Applied Systems field office listing subject to change.
See us on the web at http://www.york.com/ for additional information.
CANADA Ottawa, Ontario Toronto, Ontario Laval, Quebec
[phone] [phone] [phone]
4

[phone]
www.york.com
Proud Sponsor
of the 2000
U.S. Olympic Team
36USC380
P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA
Copyright © by York International Corporation 2000 ALL RIGHTS RESERVED
Form 201.18-NM1.2 (300)
New Release