Specifications

ManualsBrandsCarrier ManualsHousehold Appliances30GTN

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 903 Catalog No. 563-025 Printed in U.S.A. Form 30GTN-3T Pg 1 3-00 Replaces: 30GTN-2T

Book 2

Tab 5 c

Controls Start-Up, Operation,

Service, and Troubleshooting

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be

hazardous due to system pressures, electrical components, and

equipment location (roof, elevated structures, etc.). Only

trained, qualified installers and service mechanics should in-

stall, start up, and service this equipment.

When working on this equipment, observe precautions in

the literature, and on tags, stickers, and labels attached to the

equipment, and any other safety precautions that apply. Follow

all safety codes. Wear safety glasses and work gloves. Use care

in handling, rigging, and setting this equipment, and in han-

dling all electrical components.

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . 1

GENERAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INTRODUCTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2,3

MAJOR SYSTEM COMPONENTS

. . . . . . . . . . . . . . 3-10

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Main Base Board (MBB)

. . . . . . . . . . . . . . . . . . . . . . . . . . 3

Expansion Valve (EXV) Board

. . . . . . . . . . . . . . . . . . . . 3

Compressor Expansion Board (CXB)

. . . . . . . . . . . . . 3

Scrolling Marquee Display

. . . . . . . . . . . . . . . . . . . . . . . 3

Energy Management Module (EMM)

. . . . . . . . . . . . . . 3

Enable/Off/Remote Contact Switch

. . . . . . . . . . . . . . . 3

Emergency On/Off Switch

. . . . . . . . . . . . . . . . . . . . . . . . 3

Reset Button

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Board Addresses

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Control Module Communication

. . . . . . . . . . . . . . . . . . 4

Carrier Comfort Network Interface

. . . . . . . . . . . . . . . 4

OPERATING DATA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-47

Sensors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

• T1 — COOLER LEAVING FLUID SENSOR

• T2 — COOLER ENTERING FLUID SENSOR

• T3,T4 — SATURATED CONDENSING

TEMPERATURE SENSORS

• T5,T6 — COOLER SUCTION TEMPERATURE

SENSORS

• T7,T8 — COMPRESSOR SUCTION GAS

TEMPERATURE SENSORS

• T9 — OUTDOOR-AIR TEMPERATURE SENSOR

• T10 — REMOTE SPACE TEMPERATURE SENSOR

Thermostatic Expansion Valves (TXV)

. . . . . . . . . . . 15

Compressor Protection Control System

(CPCS) or Control Relay (CR)

. . . . . . . . . . . . . . . . . 15

Compressor Ground Current Protection Board

(CGF) and Control Relay (CR)

. . . . . . . . . . . . . . . . . 15

Electronic Expansion Valve (EXV)

. . . . . . . . . . . . . . . 16

Energy Management Module

. . . . . . . . . . . . . . . . . . . . 16

Capacity Control

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

• ADDING ADDITIONAL UNLOADERS

• MINUTES LEFT FOR START

• MINUTES OFF TIME

• LOADING SEQUENCE

Electrical shock can cause personal injury and death. Shut

off all power to this equipment during installation and ser-

vice. There may be more than one disconnect switch. Tag

all disconnect locations to alert others not to restore power

until work is completed.

This unit uses a microprocessor-based electronic control

system. Do not use jumpers or other tools to short out com-

ponents, or to bypass or otherwise depart from recom-

mended procedures. Any short-to-ground of the control

board or accompanying wiring may destroy the electronic

modules or electrical components.

To prevent potential damage to heat exchanger tubes

always run fluid through heat exchangers when adding or

removing refrigerant charge. Use appropriate brine solu-

tions in cooler fluid loops to prevent the freezing of heat

exchangers when the equipment is exposed to temperatures

below 32 F (0° C).

DO NOT VENT refrigerant relief valves within a building.

Outlet from relief valves must be vented outdoors in accor-

dance with the latest edition of ANSI/ASHRAE (American

National Standards Institute/American Society of Heating,

Refrigeration and Air Conditioning Engineers) 15 (Safety

Code for Mechanical Refrigeration). The accumulation of

refrigerant in an enclosed space can displace oxygen and

cause asphyxiation. Provide adequate ventilation in

enclosed or low overhead areas. Inhalation of high concen-

trations of vapor is harmful and may cause heart irregulari-

ties, unconsciousness or death. Misuse can be fatal. Vapor

is heavier than air and reduces the amount of oxygen avail-

able for breathing. Product causes eye and skin irritation.

Decomposition products are hazardous.

DO NOT attempt to unbraze factory joints when servicing

this equipment. Compressor oil is flammable and there is

no way to detect how much oil may be in any of the refrig-

erant lines. Cut lines with a tubing cutter as required when

performing service. Use a pan to catch any oil that may

come out of the lines and as a gage for how much oil to add

to system. DO NOT re-use compressor oil.

30GTN,GTR040-420

30GUN,GUR040-420

Air-Cooled Reciprocating Liquid Chillers

with

Comfort

Link™ Controls

50/60 Hz

Summary of content (96 pages)

PAGE 1
30GTN,GTR040-420 30GUN,GUR040-420 Air-Cooled Reciprocating Liquid Chillers with ComfortLink™ Controls 50/60 Hz Controls Start-Up, Operation, Service, and Troubleshooting SAFETY CONSIDERATIONS Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical components, and equipment location (roof, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start up, and service this equipment.
PAGE 2
CONTENTS (cont) Page Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 • COMPRESSOR PROTECTION • LOW OIL PRESSURE PROTECTION • CRANKCASE HEATERS • COOLER PROTECTION Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 • HIGH-SIDE PROTECTION • LOW-SIDE PROTECTION • PRESSURE RELIEF VALVES Other Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
Table 1A — Unit Sizes and Modular Combinations (30GTN,R) UNIT 30GTN,R 040 045 050 060 070 080 090 100 110 130 150 170 190 210 230 245 255 270 290 315 330 360 390 420 NOMINAL TONS 40 45 50 60 70 80 90 100 110 125 145 160 180 200 220 230 240 260 280 300 325 350 380 400 SECTION A UNIT 30GTN,R — — — — — — — — — — — — — — 150 150 150 170 190 210 170 190 210 210 inputs from compressors A1, A2, B1 and B2, and other status switches. See Table 3. The MBB also controls several outputs.
PAGE 4
Control Module Communication At each system element, the shields of its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous shield must be connected to a ground at one point only. If the communication bus cable exits from one building and enters another, the shields must be connected to grounds at the lightning suppressor in each building where the cable enters or exits the building (one point per building only).
PAGE 5
Table 3 — Status Switches STATUS SWITCH Oil Pressure, Ckt B Oil Pressure, Ckt A Remote On/Off Compressor Fault Signal, B3 Compressor Fault Signal, B2 Compressor Fault Signal, B1 Compressor Fault Signal, A4 Compressor Fault Signal, A3 Compressor Fault Signal, A2 Compressor Fault Signal, A1 CPCS CR CXB MBB OPS — — — — — PIN CONNECTION POINT 070 (50 Hz) 080, 230B J7-1, 2 (MBB) J7-3, 4 (MBB) TB5-13, 14 Not Used* Not Used* OPSB OPSA J5-8, 12 (CXB) Not Used Not Used Not Used Not Used Not Used CR-B3
PAGE 6
Fig.
PAGE 7
CCN LEN DATA COMMUNICATION PORT Fig.
PAGE 8
CCN LEN DATA COMMUNICATION PORT / Fig. 33 — — 24 24 V V Control Control Schematic, Schematic, Unit Unit Sizes Sizes 080-110, 080-110, 230B-315B 230B-315B Fig.
PAGE 9
CCN LEN DATA COMMUNICATION PORT Fig.
PAGE 10
RED LED - STATUS GREEN LED LEN (LOCAL EQUIPMENT NETWORK) YELLOW LED CCN (CARRIER COMFORT NETWORK) INSTANCE JUMPER CEPL130346-01 J1 J4 STATUS J2 J10 LEN J3 CCN J5 J6 J7 J8 J9 Fig. 5 — Main Base Board EMERGENCY ON/OFF SWITCH ENABLE/OFF/REMOTE CONTACT SWITCH GFI-CONVENIENCE OUTLET ACCESSORY ON 208/230V 460 AND 575V ONLY RESET BUTTON (SIZES 130-210 AND ASSOCIATED MODULES ONLY) Fig.
PAGE 11
OPERATING DATA T3, T4 — SATURATED CONDENSING TEMPERATURE SENSORS — These 2 thermistors are clamped to the outside of a return bend of the condenser coils. T5, T6 — COOLER SUCTION TEMPERATURE SENSORS — These thermistors are located next to the refrigerant inlet in the cooler head, and are inserted into a friction-fit well. The sensor well is located directly in the refrigerant path. These thermistors are not used on units with TXVs.
PAGE 12
040-070 080-110 AND ASSOCIATED MODULAR UNITS* 130-210 AND ASSOCIATED MODULAR UNITS* *When thermistor is viewed from perspective where the compressor is on the left and the cooler is on the right. Fig.
PAGE 13
LEGEND EXV — Electronic Expansion Valve Fig. 9 — Compressor Thermistor Locations (T7 and T8) Fig.
PAGE 14
2. Insert and secure the red (+) wire to terminal 5 of the space temperature sensor terminal block. 3. Insert and secure the white (ground) wire to terminal 4 of the space temperature sensor. 4. Insert and secure the black (–) wire to terminal 2 of the space temperature sensor. 5. Connect the other end of the communication bus cable to the remainder of the CCN communication bus. T10 — REMOTE SPACE TEMPERATURE SENSOR — Sensor T10 (part no.
PAGE 15
Thermostatic Expansion Valves (TXV) — Model 30GTN,R and 30GUN,R 040-110 units are available from the factory with conventional TXVs with liquid line solenoids. The liquid line solenoid valves are not intended to be a mechanical shut-off. When service is required, use the liquid line service valve to pump down the system. NOTE: This option is not available for modular units. The TXV is set at the factory to maintain approximately 8 to 12° F (4.4 to 6.
PAGE 16
Electronic Expansion Valve (EXV) (See Fig. 15) — Standard units are equipped with a bottom seal EXV. This device eliminates the use of the liquid line solenoid pumpdown at unit shutdown. An O-ring has been added to bottom of orifice assembly to complete a seal in the valve on shutdown. This is not a mechanical shut-off. When service is required, use the liquid line service valve to pump down the system.
PAGE 17
J2 LEN J3 TEST 1 PWR J4 J1 STATUS CEPL130351-01 CEBD430351-0396-01C J5 J7 J6 RED LED - STATUS TEST 2 GREEN LED LEN (LOCAL EQUIPMENT NETWORK) ADDRESS DIP SWITCH Fig. 16 — Energy Management Module value ranges from –100 to + 100%. If the next stage of capacity is a compressor, the control starts (stops) a compressor when the ratio reaches +100% (–100%). If the next stage of capacity is an unloader, the control deenergizes (energizes) an unloader when the ratio reaches +60% (–60%).
PAGE 18
Table 5A — Part Load Data Percent Displacement, Standard Units UNIT 30GTN,R 30GUN,R 040 (60 Hz) 040 (50 Hz) 045 (60 Hz) 045 (50 Hz) 050 (60 Hz) 050 (50 Hz) 060 (60 Hz) 060 (50 Hz) 070 (60 Hz) 070 (50 Hz) 080, 230B (60 Hz) 080, 230B (50 Hz) 090, 245B (60 Hz) 090, 245B (50 Hz) 100, 255B, 270B (60 Hz) CONTROL STEPS 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5 6 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 LOADING SEQUENCE A % Displacement C
PAGE 19
Table 5A — Part Load Data Percent Displacement, Standard Units (cont) UNIT 30GTN,R 30GUN,R 100, 255B 270B (50 Hz) 110, 290B, 315B (60 Hz) 110, 290B, 315B (50 Hz) 130 (60 Hz) 130 (50 Hz) 150, 230A, 245A, 255A (60 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LOADING SEQUENCE A % Displacement Compressors (Approx) 13 A1* 20 A1 26 A1*,B1* 33 A1,B1 40 A1,B1 57 A1*,A2,B1* 6
PAGE 20
Table 5A — Part Load Data Percent Displacement, Standard Units (cont) UNITT 30GTN,R 30GUN,R 150, 230A, 245A, 255A (50 Hz) 170, 270A, 330A/B (60 Hz) 170, 270A, 330A/B, 360B (50 Hz) 190, 290A, 360A/B, 390B (60 Hz) 190, 290A, 360A, 390B (50 Hz) 210, 315A, 390A, 420A/B (60 Hz) 210, 315A, 390A, 420A/B (50 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 7 1 2 3 4 5 6 7 LOADING SEQUEN
PAGE 21
Table 5B — Part Load Data Percent Displacement, With Accessory Unloaders UNIT 30GTN,R 30GUN,R 040 (60 Hz) 040 (50 Hz) 045 (60 Hz) 045 (50 Hz) 050 (60 Hz) 050 (50 Hz) 060 (60 Hz) 060 (50 Hz) 070 (60 Hz) 070 (50 Hz) 080, 230B (60 Hz) 080, 230B (50 Hz) 090, 245B (60 Hz) CONTROL STEPS 1 2 3 4 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 LOADING SEQUENCE A % Displacement Compressors (Approx) 25
PAGE 22
Table 5B — Part Load Data Percent Displacement, With Accessory Unloaders (cont) UNIT 30GTN,R 30GUN,R 090, 245B (50 Hz) 100, 255B, 270B (60 Hz) 100, 255B, 270B (50 Hz) 110, 290B, 315B (60 Hz) 110, 290B, 315B (50 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 LOADING SEQUENCE A % Displacement Compressors (Approx) 7 A1† 14 A1* 21 A1 29 A1†,B1 36 A1*,B1 43 A1,B1 49
PAGE 23
Table 5B — Part Load Data Percent Displacement, with Accessory Unloaders (cont) UNIT 30GTN,R 30GUN,R 130 (60 Hz) 130 (50 Hz) 150, 230A, 245A, 255A (60 Hz) 150, 230A, 245A, 255A (50 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 LOADING SEQUENCE A % Displacement Compressors (Approx) 8 A1† 14 A1* 21 A1 22 A1†,B1* 28 A1†,B1 35 A1*,B1 42 A1,B1 44 A1†,A2,B1† 51 A1†,A2,B
PAGE 24
Table 5B — Part Load Data Percent Displacement, With Accessory Unloaders (cont) UNIT 30GTN,R 30GUN,R 170, 270A, 330A/B (60 Hz) 170, 270A, 330A/B, 360B (50 Hz) 190, 290A, 360A/B, 390B (60 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 LOADING SEQUENCE A % Displacement Compressors (Approx) 6 A1† 11 A1* 17 A1 17 A1†,B1* 23 A1†,B1 28 A1*,B1 33 A1,B1 34 A1†,A2,B1* 39
PAGE 25
Table 5B — Part Load Data Percent Displacement, With Accessory Unloaders (cont) UNIT 30GTN,R 30GUN,R 190, 290A, 360A, 390B (50 Hz) 210, 315A, 390A, 420A/B (60 Hz) 210, 315A, 390A, 420A/B (50 Hz) CONTROL STEPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 LOADING SEQUENCE A % Displacement Compressors (Approx) 11 A1* 11 A1 22 A1*,B1* 28 A1*,B1 33 A1,B1 39 A1*,A2,B1* 44 A1*,A2,B1 50 A1,A2,B1 55 A1*,A2,B1*,B2
PAGE 26
there is a change in the direction of capacity (increase or decrease) and each circuit’s capacity is equal. CAPACITY SEQUENCE DETERMINATION (LOAD, Configuration Mode under OPT2) — This is configurable as equal circuit loading or staged circuit loading with the default set at equal. The control determines the order in which the steps of capacity for each circuit are changed. This control choice does NOT have any impact on machines with only 2 compressors.
PAGE 27
2 STARTS DEADBAND EXAMPLE 47 7 6 46 45 LWT (F) LWT (C) 8 44 43 42 5 41 0 200 400 600 TIME (SECONDS) LEGEND LWT — Leaving Water Temperature 800 1000 3 STARTS STANDARD DEADBAND MODIFIED DEADBAND Fig. 17 — Deadband Multiplier During the first 10 minutes after circuit start-up, MBBcontrolled fans are not turned on until T3 and T4 are greater than the head pressure set point plus 10 F (5.6 C).
PAGE 28
FAN ARRANGEMENT 30GTN,R040-050 30GUN,R040-050 30GTN,R060-090, 230B, 245B 30GUN,R060-090, 230B, 245B 30GTN,R100,110, 255B-315B 30GUN,R100,110, 255B-315B 30GTN,R130 (60 Hz), 30GUN,R130 (60 Hz) POWER 30GTN,R130 (50 Hz), 150-210, 230A-315A, 330A/B-420A/B† 30GUN,R130 (50 Hz), 150-210, 230A-315A, 330A/B-420A/B† POWER FAN NO. FAN RELAY 1 — Compressor No. A1 2 — Compressor No. B1 3 1 First Stage of Condenser Fans 4 2 Second Stage of Condenser Fans 1 — Compressor No. A1 2 — Compressor No.
PAGE 29
Marquee Display Usage (See Fig. 19 and Tables 7-25) — The Marquee display module provides the The Service Test function should be used to verify proper operation of compressors, unloaders, hot gas bypass (if installed), cooler pump and remote alarm relays, EXVs and condenser fans. To use the Service Test mode, the Enable/Off/ Remote Contact switch must be in the OFF position. Use the display keys and Table 9 to enter the mode and display TEST. Press ENTER twice so that OFF flashes.
PAGE 30
RETURN FLUID THERMISTOR WIRING* LEAVING FLUID MASTER CHILLER SLAVE CHILLER INSTALL DUAL CHILLER LEAVING FLUID THERMISTOR (T9) HERE *Depending on piping sizes, use either: — HH79NZ014 sensor and 10HB50106801 well (3-in. sensor/well) — HH79NZ029 sensor and 10HB50106802 well (4-in. sensor/well) Fig.
PAGE 31
Table 8 — Run Status Mode and Sub-Mode Directory SUB-MODE VIEW RUN HOUR STRT VERS KEYPAD ENTRY ITEM RANGE ITEM EXPANSION ENTER EWT 0 - 100 F (–18 - 38 C) ENTERING FLUID TEMP LWT 0 - 100 F (–18 - 38 C) LEAVING FLUID TEMP SETP 0 - 100 F (–18 - 38 C) ACTIVE SETPOINT CTPT 0 - 100 F (–18 - 38 C) CONTROL POINT STAT 0-7 CONTROL MODE OCC NO-YES OCCUPIED MODE NO-YES OVERRIDE MODE IN EFFECT CAP 0 - 100% PERCENT TOTAL CAPACITY ENTER ENTER ENTER ENTER STGE 0 - 30 REQUESTED STAGE
PAGE 32
Table 9 — Service Test Mode and Sub-Mode Directory SUB-MODE KEYPAD ENTRY TEST ENTER TEST OFF-ON SERVICE TEST MODE ENTER LLS.A OPEN-CLSE LIQ. LINE SOLENOID VALVE EXV.A 0 - 100% EXV % OPEN OUTS COMP ENTER ITEM RANGE ITEM EXPANSION COMMENT Use to Enable/Disable Manual Mode TXV units only LLS.B OPEN-CLSE LIQ. LINE SOLENOID VALVE EXV.
PAGE 33
Table 10 — Temperature Mode and Sub-Mode Directory SUB-MODE UNIT KEYPAD ENTRY ITEM RANGE ITEM EXPANSION ENTER CEWT –40 - 245 F (–40 - 118 C) COOLER ENTERING FLUID CLWT –40 - 245 F (–40 - 118 C) COOLER LEAVING FLUID OAT –40 - 245 F (–40 - 118 C) OUTSIDE AIR TEMPERATURE SPT –40 - 245 F (–40 - 118 C) SPACE TEMPERATURE CNDE –40 - 245 F (–40 - 118 C) CONDENSER ENTERING FLUID CNDL –40 - 245 F (–40 - 118 C) CONDENSER LEAVING FLUID DLWT –40 - 245 F (–40 - 118 C) LEAD/LAG LEAVING FLUID CIR
PAGE 34
Table 13 — Reading and Changing Chilled Fluid Set Point SUB-MODE KEYPAD ENTRY ITEM DISPLAY RANGE ITEM EXPANSION ENTER CSP.1 44.0 °F –20-70 F COOLING SETPOINT 1 ENTER 44.0 °F –20-70 F Scrolling stops ENTER 44.0 °F –20-70 F Value flashes –20-70 F Select 46.0 ENTER 46.0 °F –20-70 F Change accepted 46.0 °F –20-70 F COOL ENTER CSP.
PAGE 35
Table 15 — Outputs Mode and Sub-Mode Directory SUB-MODE KEYPAD ENTRY ITEM RANGE ITEM EXPANSION GEN.O ENTER FAN1 OFF-ON FAN 1 RELAY FAN2 OFF-ON FAN 2 RELAY FAN3 OFF-ON FAN 3 RELAY FAN4 OFF-ON FAN 4 RELAY C.PMP OFF-ON COOLER PUMP RELAY H.GAS OFF-ON HOT GAS BYPASS RELAY CIR.A ENTER CIR.B EXV TXV — — ENTER CNDP OFF-ON CONDENSER PUMP RELAY CC.A1 OFF-ON COMPRESSOR A1 RELAY CC.A2 OFF-ON COMPRESSOR A2 RELAY CC.A3 OFF-ON COMPRESSOR A3 RELAY CC.
PAGE 36
Table 16 — Configuration Mode and Sub-Mode Directory (cont) SUB-MODE UNIT OPT1 OPT2 CCN EMM EXV LCW — — — — KEYPAD ENTRY ENTER ENTER ENTER MARQUEE DISPLAY RANGE NAVIGATOR DISPLAY RANGE TYPE 1-5 AIR COOLED WATER COOLED SPLIT HEAT MACHINE HEAT RECLAIM UNIT TYPE TONS 15 - 300 15 - 300 UNIT SIZE CAP.A 0 - 100% 0 - 100% CIRCUIT A % CAPACITY CMP.A 1-4 1-4 NUMBER CIRC A COMPRESSOR CYL.A 4, 6 4, 6 COMPRESSOR A1 CYLINDERS CMP.
PAGE 37
Table 16 — Configuration Mode and Sub-Mode Directory (cont) SUB-MODE KEYPAD ENTRY OPT2 (cont) ITEM MARQUEE DISPLAY RANGE NAVIGATOR DISPLAY RANGE ITEM EXPANSION BAUD 1-5 2400 CCN BAUD RATE Default: 3 1 = 2400 2 = 4800 3 = 9600 4 = 19,200 5 = 38,400 LOAD 1-2 EQUAL STAGED LOADING SEQUENCE SELECT Default: 1 1 = Equal 2 = Staged LLCS 1-3 AUTOMATIC CIR A LEADS CIR B LEADS LEAD/LAG CIRCUIT SELECT LCWT 2 - 60 ∆ F (–16 - 16 ∆ C) 2 - 60 ∆ F (–16 - 16 ∆ C) HIGH LCW ALERT LIMIT Default: 60 DEL
PAGE 38
Table 16 — Configuration Mode and Sub-Mode Directory (cont) SUB-MODE SLCT KEYPAD ENTRY ITEM MARQUEE DISPLAY RANGE NAVIGATOR DISPLAY RANGE ENTER CLSP 0-5 DUAL SWITCH DUAL 7 DAY DUAL CCN OCC 4-20 INPUT EXTERNAL POT COOLING SETPOINT SELECT HTSP 0-4 0-4 HEATING SETPOINT SELECT Not Supported RL.S ENBL-DSBL ENBL-DSBL RAMP LOAD SELECT Default: DSBL CRMP 0.2 - 2.0° F (0.1 - 1.1° C) 0.2 - 2.0° F (0.1 - 1.1° C) COOLING RAMP LOADING Default: 1.0 HRMP 0.2 - 2.0° F (0.1 - 1.1° C) 0.2 - 2.
PAGE 39
Table 18A — Example of Configuring Dual Chiller Control (Master Chiller) SUB-MODE RSET KEYPAD ENTRY ITEM DISPLAY ITEM EXPANSION ENTER CRST 0 COOLING RESET TYPE LLDY 5 LAG START DELAY COMMENT ENTER 5 Scrolling stops ENTER 5 Value flashes 10 Select 10 10 Change accepted ENTER ESCAPE LLDY 10 LLBD 168 LEAD/LAG BALANCE DELTA LLBL DSBL LEAD/LAG BALANCE SELECT No change needed.
PAGE 40
Table 19 — Example of Compressor Lead/Lag Configuration SUB-MODE KEYPAD ENTRY ITEM DISPLAY ITEM EXPANSION OPT2 ENTER CTRL 0 CONTROL METHOD CCNA 1 CCNB 0 BAUD 3 LOAD 1 LLCS 1 COMMENT LEAD/LAG CIRCUIT SELECT DEFAULT: 1 (Size 080-420) 2 (Size 040-070) ENTER 1 Scrolling stops ENTER 1 Value flashes 3 Select 3 (See note below) 3 ENTER LLCS ESCAPE 3 1 = Automatic 2 = Circuit A Leads 3 = Circuit B Leads Change accepted LEAD/LAG CIRCUIT SELECT Item/Value/Units scrolls again NOT
PAGE 41
Table 21 — Setting an Occupied Time Schedule SUB-MODE SCHD KEYPAD ENTRY ITEM DISPLAY ITEM EXPANSION ENTER MON.O 00.00 MONDAY OCCUPIED TIME COMMENT TIME IN MILITARY FORMAT (HH.MM) ENTER 00.00 Scrolling stops ENTER 00.00 Hours flash 07.00 Select 7 AM 07.00 Change accepted, minutes flash 07.30 Select 30 07.30 Change accepted ENTER ENTER MON.O ESCAPE 07.
PAGE 42
Table 23 — Operating Modes MODE NO.
PAGE 43
Table 24 — Alarms Mode and Sub-Mode Directory SUB-MODE KEYPAD ENTRY ITEM ITEM EXPANSION COMMENT CRNT ENTER AXXX or TXXX CURRENTLY ACTIVE ALARMS RCRN ENTER YES/NO RESET ALL CURRENT ALARMS HIST ENTER AXXX or TXXX ALARM HISTORY RHIS ENTER YES/NO RESET ALARM HISTORY Alarms are shown as AXXX. Alerts are shown as TXXX. Alarms are shown as AXXX. Alerts are shown as TXXX.
PAGE 44
Table 26 — Configuring Temperature Reset MODE KEYPAD KEYPAD SUB-MODE ITEM DISPLAY ENTRY ENTRY ENTER DISP ENTER TEST UNIT ENTER TYPE UNIT TYPE OPT1 ENTER FLUD COOLER FLUID OPT2 ENTER RSET CONFIGURATION ENTER ON/OFF ITEM EXPANSION COMMENT TEST DISPLAY LEDS CTRL CONTROL METHOD CRST COOLING RESET TYPE 0 = No Reset 1 = 4 to 20 mA Input (EMM required) (Connect to EMM J6-2,5) 2 = Outdoor-Air Temperature (Connect to TB5-7,8) 3 = Return Fluid 4 = Space Temperature (Connect to TB5-5,6) Defau
PAGE 45
Cooling Set Point (4 to 20 mA) — A field supplied enable the function. Figure 22 shows how the 4 to 20 mA signal is linearly calculated on an overall 10 F to 80 F range for fluid types (Configuration mode, sub-mode OPT1, item FLUD) 1 or 2. and generated, externally powered 4 to 20 mA signal can be used to provide the leaving fluid temperature set point. Connect the signal to TB6-3,5 (+,–). See Table 27 for instructions to 100 (38) SET POINT, F (C) 80 (27) 60 (15) 40 (4.4) 20 (-7) 0 (-17) 4 6.3 8.
PAGE 46
Demand Limit — Demand Limit is a feature that allows 2 set point. The demand limit stage that is set to the lowest demand takes priority if both demand limit inputs are closed. If the demand limit percentage does not match unit staging, the unit will limit capacity to the closest capacity stage. To disable demand limit configure the DMDC to 0. See Table 28. EXTERNALLY POWERED DEMAND LIMIT (4 to 20 mA Controlled) — To configure Demand Limit for 4 to 20 mA control set the Demand Limit Select (DMDC) to 2.
PAGE 47
MAX. ALLOWABLE LOAD (%) 100 50% CAPACITY AT 20 mA 80 60 40 100% CAPACITY AT 4 mA 75% CAPACITY AT 12 mA 20 0 0 2 6 12 8 10 14 DEMAND LIMIT SIGNAL – 4 - 20 mA INPUT (VOLTS DC) 4 16 18 20 Fig. 23 — 4 to 20 mA Demand Limiting TROUBLESHOOTING the quick test and initialization features built into the ComfortLink™ control. Follow the procedure below to diagnose and correct EXV problems. STEP 1 — CHECK PROCESSOR EXV OUTPUTS — Check EXV output signals at the J6 and J7 terminals of the EXV board.
PAGE 48
Open liquid line service valve. Check for any refrigerant leaks. Turn the ENABLE/OFF/REMOTE switch back to ENABLE or REMOTE and allow the unit to operate. Verify proper unit operation. NOTE: The EXV orifice is a screw-in type and may be removed for inspection and cleaning. Once the motor canister is removed the orifice can be removed by using the orifice removal tool (part no. TS429). A slot has been cut in the top of the orifice to facilitate removal. Turn orifice counterclockwise to remove.
PAGE 49
Table 29 — Alarm and Alert Codes ALARM/ ALERT CODE T051 ALARM OR ALERT Alert Circuit A, Compressor 1 Failure WHY WAS THIS ALARM GENERATED? Compressor feedback signal does not match relay state T052 Alert Circuit A, Compressor 2 Failure Compressor feedback signal does not match relay state Circuit A shut down. Circuit restarted in 1 minute. Compressor A2 not used until alarm is reset.
PAGE 50
Table 29 — Alarm and Alert Codes (cont) ALARM/ ALERT CODE T112 ALARM WHY WAS THIS ACTION TAKEN OR DESCRIPTION ALARM BY CONTROL ALERT GENERATED? Alert Circuit A High Suction If EXV is greater than Circuit A shutdown after Superheat 98%, suction superheat is pumpdown complete. greater than 75 F (41.7 C) and saturated suction temperature is less than MOP for 5 minutes T113 Alert Circuit B High Suction If EXV is greater than Circuit B shutdown after Superheat 98% suction superheat is pumpdown complete.
PAGE 51
Table 29 — Alarm and Alert Codes (cont) ALARM/ ALERT CODE A150 ALARM OR ALERT Alarm A151 Alarm Illegal Configuration A152 Alarm T153 DESCRIPTION Emergency Stop WHY WAS THIS ALARM GENERATED? CCN emergency stop command received ACTION TAKEN BY CONTROL RESET METHOD Chiller shutdown without going through pumpdown. Automatic once CCN command for EMSTOP returns to normal Manual once configuration errors are corrected Automatic once alarms/alerts are cleared that prevent the chiller from starting.
PAGE 52
Table 29 — Alarm and Alert Codes (cont) ALARM/ ALERT CODE T203 ALARM OR ALERT Alert T204 Alert T205 WHY WAS THIS ALARM GENERATED? Master MBB loses communication with Slave MBB ACTION TAKEN BY CONTROL RES METHOD PROBABLE CAUSE Dual chiller control disabled. Chiller runs as a stand-alone machine. Automatic Loss of Communication with Master Chiller Slave MBB loses communication with Master MBB Dual chiller control disabled.
PAGE 53
SERVICE 30GUN,R approved polyolester (POE) oils are as follows: • Mobil Artic EAL 68 • Castrol SW68 • ICI Emkarate RL68H • Lubrizol 29168 (Texaco HFC Capella 68NA) • CPI Solest 68 ELECTRIC SHOCK HAZARD. Turn off all power to unit before servicing. The ENABLE/OFF/REMOTE CONTACT switch on control panel does not shut off control power; use field disconnect.
PAGE 54
7. Remove the liquid lines by breaking the silver-soldered joints at the cooler liquid line nozzles. 8. On 30GTN,GTR and 30GUN,R 080-110 and 230B-315B units, remove the vertical support(s) under the condenser coil in front of the cooler. Provide temporary support as needed. Save all screws for reinstallation later. 9. Remove the screws in the cooler feet. Slide the cooler slightly to the left to clear the refrigerant tubing. Save all screws.
PAGE 55
SIZES 040-050 SIZES 080,090* SIZES 170,190* SIZES 130,150* SIZES 060,070 SIZES 100,110* SIZE 210* *And associated modular units (see Tables 1A and 1B). Fig. 25 — Typical Tube Sheets, Cover Off (Non-Removable Tubes) Table 31 — Plugs Tube Plugging — A leaky tube can be plugged until retubing can be done. The number of tubes plugged determines how soon cooler must be retubed.
PAGE 56
cleaner is not available, a soft brush may be used. In either case, the tool should be applied in the direction of the fins. Coil surfaces can be easily damaged (fin edges bent over) if the tool is applied across the fins. NOTE: Use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers and dirt into the coil. This will make cleaning efforts more difficult. Surface loaded fibers must be completely removed prior to using low velocity clean water rinse.
PAGE 57
Enviro-Shield™ Coil Cleaner Application Equipment • 21/2 Gallon Garden Sprayer • Water Rinse with Low Velocity Spray Nozzle Enviro-Shield Coil Cleaner Application Instructions • Although Enviro-Shield Coil cleaner is harmless to humans, animals, and marine life, proper eye protection such as safety glasses is recommended during mixing and application. • Remove all surface loaded fibers and dirt with a vacuum cleaner as described above.
PAGE 58
Refrigerant Feed Components — Each circuit has all necessary refrigerant controls. ELECTRONIC EXPANSION VALVE (EXV) — A cutaway view of valve is shown in Fig. 30. High-pressure liquid refrigerant enters valve through bottom. A series of calibrated slots have been machined in side of orifice assembly. As refrigerant passes through orifice, pressure drops and refrigerant changes to a 2-phase condition (liquid and vapor).
PAGE 59
Thermistors — Electronic control uses 4 to 10 thermistors to sense temperatures used to control the operation of chiller. Thermistors T1-T9 vary in their temperature vs resistance and voltage drop performance. Thermistor T10 is a 10 kΩ input channel and has a different set of temperature vs resistance and voltage drop performance. Resistances at various temperatures are listed in Tables 32A-33B. LOCATION — General locations of thermistor sensors are shown in Fig. 7-10. See Table 2 for pin connection points.
PAGE 60
Table 32A — 5K Thermistor Temperature (F) vs Resistance/Voltage VOLTAGE DROP A FOR THERMISTORS T1, T2, T7-T9 VOLTAGE DROP B FOR THERMISTORS T3-T6 TEMP (F) –25 –24 –23 –22 –21 –20 –19 –18 –17 –16 –15 –14 –13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 VOLTAGE VOLTAGE DROP A DROP B (V) (V) 3.699 4.538 3.689 4.523 3.679 4.508 3.668 4.493 3.658 4.
PAGE 61
Table 32B — 5K Thermistor Temperature (C) vs Resistance/Voltage (cont) VOLTAGE DROP A FOR THERMISTORS T1, T2, T7-T9 VOLTAGE DROP B FOR THERMISTORS T3-T6 TEMP (C) –32 –31 –30 –29 –28 –27 –26 –25 –24 –23 –22 –21 –20 –19 –18 –17 –16 –15 –14 –13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VOLTAGE VOLTAGE DROP A DROP B (V) (V) 3.705 4.547 3.687 4.520 3.668 4.493 3.649 4.464 3.629 4.433 3.608 4.402 3.586 4.369 3.563 4.335 3.539 4.300 3.514 4.264 3.489 4.226 3.462 4.187 3.434 4.
PAGE 62
Table 33A — 10K Thermistor Temperatures (°F) vs Resistance/Voltage Drop (For Thermistor T10) TEMP (F) –25 –24 –23 –22 –21 –20 –19 –18 –17 –16 –15 –14 –13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 VOLTAGE DROP (V) 4.758 4.750 4.741 4.733 4.724 4.715 4.705 4.696 4.686 4.676 4.665 4.655 4.644 4.633 4.621 4.609 4.597 4.585 4.572 4.560 4.546 4.
PAGE 63
Table 33B — 10K Thermistor Temperatures (°C) vs Resistance/Voltage Drop (For Thermistor T10) TEMP (C) –32 –31 –30 –29 –28 –27 –26 –25 –24 –23 –22 –21 –20 –19 –18 –17 –16 –15 –14 –13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VOLTAGE DROP (V) 4.762 4.748 4.733 4.716 4.700 4.682 4.663 4.644 4.624 4.602 4.580 4.557 4.533 4.508 4.482 4.455 4.426 4.397 4.367 4.335 4.303 4.269 4.235 4.199 4.162 4.124 4.085 4.044 4.003 3.961 3.917 3.873 3.828 3.781 3.734 3.686 3.637 3.587 3,537 3.
PAGE 64
Safety Devices — Chillers contain many safety devices and protection logic built into electronic control. Following is a brief summary of major safeties. COMPRESSOR PROTECTION Circuit Breaker — One manual-reset, calibrated-trip magnetic circuit breaker for each compressor protects against overcurrent. Do not bypass or increase size of a breaker to correct problems. Determine cause for trouble and correct before resetting breaker.
PAGE 65
Relief Devices — Fusible plugs are located in each circuit to protect against damage from excessive pressures. HIGH-SIDE PROTECTION — One device is located between condenser and filter drier; a second is on filter drier. These are both designed to relieve pressure on a temperature rise to approximately 210 F (99 C). LOW-SIDE PROTECTION — A device is located on suction line and is designed to relieve pressure on a temperature rise to approximately 170 F (77 C).
PAGE 66
START-UP AND OPERATION Unbalanced 3-Phase Supply Voltage — Never operate a motor where a phase imbalance between phases is greater than 2%. To determine percent voltage imbalance: NOTE: Refer to Start-Up Checklist on pages CL-1 to CL-8. Actual Start-Up — Actual start-up should be done only under supervision of a qualified refrigeration mechanic. 1. Be sure all service valves are open. Units are shipped from factory with suction, discharge, and liquid line service valves closed. 2.
PAGE 67
kept closed for 15 seconds by a time delay relay. The microprocessor stages fans to maintain the set point temperature specified by the controller. There is no pumpout sequence during shutdown of TXV controlled chillers. On all other units (EXV units), the head pressure is controlled by fan cycling. The desired head pressure set point is entered, and is controlled by EXV position or saturated condensing temperature measurement (T3 and T4).
PAGE 68
LEGEND FOR FIG.
PAGE 69
2 15 K7 TB5 3 ALM R 11 BLK 16 12 TB5 BLK MAX LOAD-75VA SEALED 360VA INRUSH 4 17 MBB 5 18 K8 TB5 6 VIO 19 PLUG J10B CWP R 10 12 TB5 MAX LOAD-75VA SEALED 360VA INRUSH Fig. 39 — Chilled Water Pump Control Wiring and Remote Alarm 115 V Relay Wiring EMM, PLUG J6 12 11 10 8 9 7 8 6 7 5 6 4 5 4 TB6 3 2 3 1 2 14 13 1 5 2 12 11 10 14 13 12 11 10 BRN VIO ORN PNK 3 9 8 9 7 8 6 5 7 6 BLU - + 4 2 3 1 2 1 RED GRA BLU RED GRA - + 4.20 MA SIGNAL GENERATOR 4.
PAGE 70
CXB ACCESSORY CXB ACCESSORY GND BLK WHT RED 4 3 2 1 1 1 4 2 2 3 2 J6 J4 3 3 UL-A2 4 4 1 5 5 CXB BOARD 6 6 UL-B2 7 7 8 8 Fig.
PAGE 71
APPENDIX A — CCN TABLES UNIT (Configuration Settings) 1 DESCRIPTION Unit Type 2 3 4 5 6 7 8 9 Unit Size Circuit A1% Capacity Number Circ A Compressor Compressor A1 Cylinders Number Circ B Compressor Compressor B1 Cylinders EXV Module Installed EXV Superheat Setpoint 10 11 12 13 14 EXV MOP EXV Superheat Offset EXV Circ. A Min Position EXV Circ.
PAGE 72
APPENDIX A — CCN TABLES (cont) CONFIGURATION SCREEN (TYPE 10) OPTIONS2 (Options Configuration) 1 DESCRIPTION Control Method 2 Loading Sequence Select 3 Lead/Lag Circuit Select 4 Cooling Setpoint Select 5 Heating Setpoint Select 6 7 8 9 10 11 STATUS 0 = Switch 1 = 7 day sched.
PAGE 73
APPENDIX A — CCN TABLES (cont) RESETCON (Temperature Reset and Demand Limit) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 DESCRIPTION COOLING RESET Cooling Reset Type STATUS DEFAULT 0 = No Reset 1 = 4-20 ma input 2 = External temp-OAT 3 = Return fluid 4 = External temp-SPT 0 to 125 0 to 125 –30 to 30 No Cool Reset Temp Full Cool Reset Temp Degrees Cool Reset HEATING RESET Heating Reset Type 0 DEMAND LIMIT Demand Limit Select Demand Limit at 20 mA Loadshed Group Numbe
PAGE 74
APPENDIX A — CCN TABLES (cont) A_UNIT (General Unit Parameters) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DESCRIPTION Control Mode Occupied CCN Chiller Alarm State Active Demand Limit Override Modes in Effect Percent Total Capacity Requested Stage Active Setpoint Control Point Entering Fluid Temp Leaving Fluid Temp Emergency Stop Minutes Left for Start Heat Cool Select STATUS 0 = Service 1 = OFF - local 2 = OFF-CCN 3 = OFF-time 4 = Emergency 5 = ON-local 6 = ON-CCN 7 = ON-time Yes/No Start/Stop Normal 0-100 Y
PAGE 75
APPENDIX A — CCN TABLES (cont) CIRCB_AN (Circuit B Analog Parameters) 1 2 3 4 5 6 7 8 9 10 DESCRIPTION Circuit B Analog Values Percent Total Capacity Percent Available Cap Discharge Pressure Suction Pressure Saturated Condensing Tmp Saturated Suction Temp Compressor Suction Temp Suction Superheat Temp EXV % Open STATUS 0-100 0-100 nnn.n nnn.n snnn.n snnn.n snnn.n snnn.n 0-100.
PAGE 76
APPENDIX A — CCN TABLES (cont) OPTIONS (Unit Parameters) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 DESCRIPTION FANS Fan 1 Relay Fan 2 Relay Fan 3 Relay Fan 4 Relay STATUS ON/OFF ON/OFF ON/OFF ON/OFF UNIT ANALOG VALUES Cooler Entering Fluid Cooler Leaving Fluid Condensing Entering Fluid Condenser Leaving Fluid Lead/Lag Leaving Fluid snnn.n snnn.n snnn.n snnn.n snnn.n TEMPERATURE RESET 4-20 mA Reset Signal Outside Air Temperature Space Temperature nn.
PAGE 77
APPENDIX A — CCN TABLES (cont) STRTHOUR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DESCRIPTION Machine Operating Hours Machine Starts STATUS nnnnn nnnnn UNITS hours POINT HR_MACH CY_MACH Circuit A Run Hours Compressor A1 Hours Compressor A2 Hours Compressor A3 Hours Compressor A4 Hours Circuit B Run Hours Compressor B1 Hours Compressor B2 Hours Compressor B3 Hours Compressor B4 Hours nnnnn nnnnn nnnnn nnnnn nnnnn nnnnn nnnnn nnnnn nnnnn nnnnn hours hours hours hours hours hours ho
PAGE 78
APPENDIX A — CCN TABLES (cont) CURRMODS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 DESCRIPTION FSM controlling chiller WSM controlling chiller Master/Slave control Low source protection Ramp Load Limited Timed Override in effect Low Cooler Suction TempA Low Cooler Suction TempB Slow Change Override Minimum OFF Time Low Suction Superheat A Low Suction Superheat B Dual Setpoint Temperature Reset Demand Limit in effect Cooler Freeze Prevention Lo Tmp Cool/Hi Tmp Heat Hi Tmp Cool/Lo Tmp Heat Maki
PAGE 79
APPENDIX A — CCN TABLES (cont) CSM/FSM EQUIPMENT TABLE (Type 621H, Block 2) LINE 1 DESCRIPTION Chiller Status 0 = Chiller is off 1 = Valid run state in CCN mode 2 = Recycle active 3 = Chiller is in Local Mode 4 = Power Fail Restart in Progress 5 = Shutdown due to fault 6 = Communication Failure Lag Status Percent Total Capacity Running Service Runtime unused unused unused Power Fail Auto Restart Percent Available Capacity On 2 3 4 5 6 7 8 9 POINT CHILSTAT LAGSTAT CAP_T HR_MACH ASTART CAP_A WSM EQUIPME
PAGE 80
APPENDIX B — FLUID DROP PRESSURE CURVES Cooler Fluid Pressure Drop Curves — 30GUN,GUR040-110 ENGLISH AND SI LEGEND — 040 — 045,050 NOTE: Ft of water = 2.31 x change in psig.
PAGE 81
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GUN,GUR130-210 ENGLISH SI COOLER PRESSURE DROP KEY 1 — 30GUN,GUR130,150 2 — 30GUN,GUR170,190 3 — 30GUN,GUR210 NOTE: Ft of water = 2.31 x change in psig.
PAGE 82
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GUN,GUR230A-255A, 270A/B-420A/B ENGLISH SI COOLER PRESSURE DROP KEY 1 Module B — 30GUN,GUR270 2 Module A — 30GUN,GUR230-255 3 Module A — 30GUN,GUR270,330 Module B — 30GUN,GUR330,360 (50 Hz) 4 Module A — 30GUN,GUR290,315,360 (50 or 60 Hz), 390, and 420 Module B — 30GUN,GUR360 (60 Hz), 390, and 420 82
PAGE 83
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GUN,GUR230B-315B ENGLISH AND SI COOLER PRESSURE DROP KEY 1 Module B — 30GUN,GUR230,245 2 Module B — 30GUN,GUR255,290,315 NOTE: Ft of water = 2.31 x change in psig.
PAGE 84
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GTN,GTR040-110 ENGLISH AND SI LEGEND — 040 — 045,050 NOTE: Ft of water = 2.31 x change in psig.
PAGE 85
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GTN,GTR130-210 ENGLISH SI COOLER PRESSURE DROP KEY 1 — 30GTN,GTR130,150 2 — 30GTN,GTR170,190 3 — 30GTN,GTR210 NOTE: Ft of water = 2.31 x change in psig.
PAGE 86
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GTN,GTR230A-420A, 270B, 330B-420B ENGLISH SI COOLER PRESSURE DROP KEY 1 Module B — 30GTN,GTR270 2 Module A — 30GTN,GTR230-255 3 Module A — 30GTN,GTR270,330 Module B — 30GTN,GTR330,360 (50 Hz) 4 Module A — 30GTN,GTR290,315,360 (50 or 60 Hz), 390, and 420 Module B — 30GTN,GTR360 (60 Hz), 390, and 420 86
PAGE 87
APPENDIX B — FLUID DROP PRESSURE CURVES (cont) Cooler Fluid Pressure Drop Curves — 30GTN,GTR230B, 245B, 255B, 290B, 315B ENGLISH AND SI COOLER PRESSURE DROP KEY 1 Module B — 30GTN,GTR230,245 2 Module B — 30GTN,GTR255,290,315 NOTE: Ft of water = 2.31 x change in psig.
PAGE 88
SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs are available, using popular video-based formats and materials. All include video and/or slides, plus companion book.
PAGE 89
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ----------------------------------------------------------------------------------------------------------------------------------------------------------------- START-UP CHECKLIST FOR COMFORTLINK™ CHILLER SYSTEMS (Remove and use for job file) A.
PAGE 90
B. Preliminary Equipment Check (Check box if complete) IS THERE ANY SHIPPING DAMAGE? IF SO, WHERE _________________________________________________________________________________________ WILL THIS DAMAGE PREVENT UNIT START-UP? HAVE COMPRESSOR BASE RAIL ISOLATORS ALL BEEN PROPERLY ADJUSTED? CHECK POWER SUPPLY.
PAGE 91
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ----------------------------------------------------------------------------------------------------------------------------------------------------------------- C. Unit Start-Up (cont) CHECK VOLTAGE IMBALANCE: AB AC AB + AC + BC (divided by 3) = AVERAGE VOLTAGE = BC V MAXIMUM DEVIATION FROM AVERAGE VOLTAGE = VOLTAGE IMBALANCE = (MAX.
PAGE 92
C. Unit Start-Up (cont) UNIT (Configuration Settings) ITEM TYPE DESCRIPTION Unit Type TONS CAP.A CMP.A CYL.A CMP.B CYL.B EXV SH.SP SH.OF REFG FAN.
PAGE 93
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ----------------------------------------------------------------------------------------------------------------------------------------------------------------- C. Unit Start-Up (cont) PRESS ESCAPE KEY TO DISPLAY ‘OPT1’. PRESS DOWN ARROW KEY TO DISPLAY ‘OPT2’. PRESS ENTER KEY.
PAGE 94
C. Unit Start-Up (cont) PRESS ESCAPE KEY TO DISPLAY ‘RSET’. PRESS DOWN ARROW KEY TO DISPLAY ‘SLCT’. PRESS ENTER KEY. RECORD CONFIGURATION INFORMATION BELOW: SLCT (Heating Cooling Setpoint Select) ITEM CLSP DESCRIPTION Cooling Setpoint Select HTSP Heating Setpoint Select RL.S CRMP HRMP HCSW Z.
PAGE 95
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ----------------------------------------------------------------------------------------------------------------------------------------------------------------- C. Unit Start-Up (cont) USE ESCAPE/ARROW KEYS TO ILLUMINATE CONFIGURATION LED. PRESS ENTER TO DISPLAY ‘DISP’. PRESS ENTER AGAIN TO DISPLAY ‘TEST’ FOLLOWED BY ‘OFF’. PRESS ENTER TO STOP DISPLAY AT ‘OFF’ AND ENTER AGAIN SO ‘OFF’ DISPLAY FLASHES. ‘PASS’ AND ‘WORD’ WILL FLASH IF PASSWORD NEEDS TO BE ENTERED.
PAGE 96
All Units: MEASURE THE FOLLOWING (MEASURE WHILE MACHINE IS IN STABLE OPERATING CONDITION): CIRCUIT A CIRCUIT B DISCHARGE PRESSURE SUCTION PRESSURE OIL PRESSURE DISCHARGE LINE TEMP SUCTION LINE TEMP SATURATED COND TEMP (T3/T4) SATURATED SUCT TEMP (T5/T6) SUCTION GAS TEMP (T7/T8) COOLER ENT FLUID (T2) COOLER LVG FLUID (T1) Copyright 2000 Carrier Corporation Book Tab Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligat