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JOHNSON CONTROLS

141

SECTION 7 – MAINTENANCE

FORM 155.30-ICOM2.EN.UL

ISSUE DATE: 12/21/2018

Refrigerant Pump Manual Stop

The refrigerant pump can be stopped manually for

maintenance purposes. It can be stopped even while

the chiller operates.

1. Navigate to the Control Panel Setting screen.
2. Press the Refrigerant Pump

Stop

button.

NOTE: After maintenance of the refriger-

ant pump is complete, be sure press the

Refrigerant Pump Auto button. Contin-

ued operation in the stop mode may cause

damage and failure of the chiller.

Purge Manual Stop and Start

The purge can be started or stopped manually.

1. Navigate to the Control Panel Setting screen.

LD20028_UL

LD20028a

2. Press the Purge Mode

Manual

button.

3. Press the Manual Purge

button.

The purge solenoid valves open. The purge operation

begins.

4. Press the Manual Purge

OFF

button when the

purge process is complete.

5. The solenoid valves close.

NOTE: After maintenance of the purge

system is complete, be sure to reset the

Manual Purge to Auto. Continued op-

eration in the manual mode may cause

damage and failure of the chiller.

6. Press the Purge Mode

Auto

button

LIFESPAN FOR VARIOUS PARTS

The replacement periods for some parts are shown be-

low. (The following periods are shown for reference

only. The replacement period may be changed accord-

ing to the actual environment, frequency of use, and so

on. Other parts may need to be replaced if used incor-

rectly.)

Содержание YHAU-CL Series

Страница 1: ...NGLE EFFECT HOT WATER ABSORPTION CHILLER INSTALLATION OPERATION MAINTENANCE NEW RELEASE Form 155 30 ICOM2 EN UL 1218 Issue Date December 21 2018 LD22981 LD22981 Model YHAU CL CH 30 2000 TON 105 7043 k...

Страница 2: ...t and any referenced materials This in dividual shall also be familiar with and comply with all applicable industry and governmental standards and regulations pertaining to the task in question SAFETY...

Страница 3: ...e man ual or product owner It is the responsibility of rigging lifting and operating service personnel to verify the applicability of these documents to the equipment If there is any question regardin...

Страница 4: ...CAPACITY HEAT SOURCE L Low Temp hot water H High Temp hot water UNIT York Absorption Chiller DESIGN SYMBOL MODEL SERIES NAME EXE 30 500 RT nominal capacity EXW2S 630 1000 RT nomi nal capacity EXW4S 1...

Страница 5: ...e Machine on Rollers 23 Jacking the machine 25 Structural Support and Installation 27 Indoor and Outdoor Installation 27 Electrical 27 Precautions for Use 27 Leak testing 28 Electrical Shock Cautions...

Страница 6: ...7 MAINTENANCE 129 Valve Inspection 129 Solenoid Valves 129 Pump Shut Off Valves 129 Air Purge Valves And Drain Valves For Chilled Water Cooling Water And Hot Water 129 Purge Valves 129 Start the Chil...

Страница 7: ...ppage of the Absorption Chiller 143 Chemical Treatment 143 Flow Speed in Tubes 144 Storage Method of the Chiller 144 Wet Storage Method 144 Dry Storage Method 145 Precautions Against External Damage 1...

Страница 8: ...66 FIGURE 27 PLC Output Wiring 68 FIGURE 28 Display Analog Input Wiring 70 FIGURE 29 Display Analog Input Wiring 72 FIGURE 30 Display Analog Output Wiring 74 FIGURE 31 PLC and Display Wiring 75 FIGURE...

Страница 9: ...r EXE Series Chiller 133 FIGURE 60 Purge Unit 134 FIGURE 61 Chilled Water and Cooling Water System 149 FIGURE 62 Hot Water System 150 FIGURE 63 Duhring Diagram PTX Chart F 151 FIGURE 64 Duhring Diagra...

Страница 10: ...Communication Specification Modbus RTU 87 TABLE 23 Rotary Pump Rotation 89 TABLE 24 Liquid Level Gauges 90 TABLE 25 Failure List 121 TABLE 26 Alarm List 122 TABLE 27 Safety Switches 127 TABLE 28 Solen...

Страница 11: ...ntenance resulting from a failure to follow the procedures and instructions detailed in this manual WARRANTY Johnson Controls warrants YHAU CL CH chillers in accordance with the Limited Warranty Engin...

Страница 12: ...ntenance on live equipment must not be at tempted No attempt should be made to gain access to the control panel or electrical enclosures during normal operation of the unit Components may also have sh...

Страница 13: ...arning Risk of electric shock General attention symbol Warning On isolating the supply it may take up to 300 seconds for the capacitor voltage to fall below 50 volts Warning Risk of fire Warning Risk...

Страница 14: ...JOHNSON CONTROLS 14 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 15: ...sable gas from the machine SECTION 2 PRODUCT DESCRIPTION CONTROL PANEL The absorption chiller comes with a factory mounted and pre wired control system The control panel en closure is equipped with a...

Страница 16: ...erant The vapor pressure of the LiBr solution is directly related to the amount of refrigerant water present in the solu tion with the LiBr and the solution temperature Figure 2 SINGLE EFFECT HOT WATE...

Страница 17: ...e and temperature The solution flows into the top of the lower absorber section When the LiBr solution enters the lower Ab sorber section it is already diluted by the refrigerant vapor that boiled off...

Страница 18: ...d refrigerant in the condenser section using cooling condenser water The liquid refrigerant water is then distributed first in the lower evaporator section LD19939a4 LD19839a4 Condenser Cooling Water...

Страница 19: ...weight Although the crystallization line on Figure 64 on page 152 does not extend that far you can see that the solution at 45 concentration will not have a tendency to crystallize at normal ambient...

Страница 20: ...JOHNSON CONTROLS 20 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 21: ...plant room will ever drop below 50 F you must have the cold ambient option for outdoor installation LD18119 DANGER Rigging and lifting should only be done by a professional rigger in accordance with...

Страница 22: ...n cause serious damage and are costly repairs Therefore use diligence in keeping the machine body free from moisture at all times 2 Problems and Preventative Measures PROBLEM PREVENTATIVE MEASURE Free...

Страница 23: ...load This is can cause damage to the machine and pose a risk to the machine installer or persons moving the unit MOVING THE MACHINE ON ROLLERS Plan the entrance for the machine from Figure 4 below Do...

Страница 24: ...924_UL Maximum Machine Width Maximum Machine Length Maximum Machine Height Skid Base Approx Approx Appr ox 3 93 3 93 3 93 7 86 7 86 15 72 Figure 4 MOVING THE MACHINE ON ROLLERS LD22923 TIR ROLLER SET...

Страница 25: ...ORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 3 JACKING THE MACHINE When jacking up the machine be sure to fit a jack in each of the jack up supports as Shown in Figure 7 be low LD22926 JACK UP SUPPORT...

Страница 26: ...E INSTALLATION AND REASSEMBLY Operate the front and rear jacks alternately Do not jack up the machine more than about 0 78 inch at a time Each time the machine is jacked up adhere it with a suitable c...

Страница 27: ...according terminals securely Loose fitting cables can cause the terminals to heat up resulting in fire or elec trical shock CAUTION The chiller does NOT arrive with a ground fault earth leakage cir cu...

Страница 28: ...el this can cause electric shock Do not touch any part other than the control panel of the machine and the valves described in the operating manual this can cause a malfunction and injury Apply only t...

Страница 29: ...rubber vibration isolators to the unit base as shown in Figure 9 on page 31 Use liners to adjust the levelness of the unit For unit dimensions see Table 8 on page 40 ITEM DESCRIPTION 1 Nut 2 Washer 3...

Страница 30: ...piping material to be compatible with the refrigerant in the system The refrigerant is de ionized water that could exceed 200 F 93 3 C in some cases Johnson Con trols recommends using schedule 40 ste...

Страница 31: ...TORAGE INSTALLATION AND REASSEMBLY FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 3 LD28267 Purge Tank Rupture Disk Solution Heat Exchanger Generator Control Panel Evaporator Absorber Condenser Rupture...

Страница 32: ...6 8 53 2 6 5 25 1 6 3 28 1 1 764 0 8 130EXE 10 17 3 1 5 91 1 8 6 89 2 1 11 464 5 2 13 889 6 3 10 17 3 1 5 25 1 6 3 28 1 2 205 1 160EXE 12 14 3 7 5 91 1 8 6 89 2 1 13 889 6 3 16 314 7 4 11 81 3 6 5 25...

Страница 33: ...2 6 5 25 1 6 3 28 1 1 764 0 8 130EXE 10 17 3 1 5 91 1 8 6 89 2 1 11 464 5 2 13 889 6 3 10 17 3 1 5 25 1 6 3 28 1 2 205 1 160EXE 12 14 3 7 5 91 1 8 6 89 2 1 13 889 6 3 16 314 7 4 11 81 3 6 5 25 1 6 3 2...

Страница 34: ...hese images are representations of nozzle arrangements Reference general arrangement drawings for detailed nozzle locations for each specific unit ITEM DESCRIPTION 1 Chilled Water Outlet Odd Pass 2 Co...

Страница 35: ...e images are representations of nozzle arrangements Reference general arrangement drawings for detailed nozzle locations for each specific unit 1 2 3 4 5 6 7 8 9 B SIDE A SIDE LD19910b ITEM DESCRIPTIO...

Страница 36: ...le 5 on page 36 2 Use a bonding agent iron wire iron band or other aproved bonding agents to fix the hot insulation cold insulation material Never rivet them The use of welding pins is not permitted T...

Страница 37: ...N 3 HANDLING STORAGE INSTALLATION AND REASSEMBLY FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 3 LD20596 Hot Insulation Cold Insulation Figure 14 HOT COLD INSULATION EXE MODELS LD20595 Figure 15 HOT C...

Страница 38: ...EN UL ISSUE DATE 12 21 2018 SECTION 3 HANDLING STORAGE INSTALLATION AND REASSEMBLY Figure 17 INTERIOR OF CONTROL PANEL Figure 16 EXTERIOR OF CONTROL PANEL LD28253 LD28266 Ground Terminal Door Stopper...

Страница 39: ...are possible Please check with your Johnson Controls Service Center to see if your temperature dif ferential is possible Table 7 TYPICAL OPERATIONAL RANGE PARAMETER ALLOWABLE RANGES EUROPE FOR OTHER...

Страница 40: ...7 3 29 762 13 5 39 463 17 9 65 477 29 7 500EXE 29 762 13 5 41 006 18 6 73 193 33 2 35 053 15 9 46 297 21 78 485 35 6 630EXW2S 35 935 16 3 50 265 22 8 86 421 39 2 41 667 18 9 55 997 25 4 92 153 41 8 70...

Страница 41: ...E 12 8 3 9 13 29 4 05 7 71 2 35 10 5 3 2 10 5 3 2 400EXE 15 42 4 7 15 91 4 85 7 71 2 35 10 5 3 2 13 12 4 500EXE 18 7 5 7 19 19 5 85 7 71 2 35 10 5 3 2 16 4 5 630EXW2S 18 04 5 5 18 04 5 5 9 02 2 75 10...

Страница 42: ...08 0 88 21 9 0 62 320EXE 150 69 14 204 51 19 3 1 39 13 77 0 39 36 02 1 02 26 13 0 74 400EXE 182 99 17 236 81 22 3 9 48 7 16 6 0 47 42 02 1 19 31 43 0 89 500EXE 215 28 20 301 39 28 4 9 60 9 19 42 0 55...

Страница 43: ...ISSUE DATE 12 21 2018 4 LOAD POINTS FOR EXE AND EXW UNITS CL MODELS LD22036 Load Point 1 Load Point 2 Load Point 4 Load Point 3 Load Point 4 Load Point 3 Load Point 1 Load Point 2 LD22036a Figure 18...

Страница 44: ...33 7 341 3 33 7 341 3 33 7 341 3 33 400EXE 9 502 4 31 9 502 4 31 7 584 3 44 7 584 3 44 500EXE 11 596 5 26 11 596 5 26 8 907 4 04 8 907 4 04 630EXW2S 14 352 6 51 10 781 4 89 14 352 6 51 10 781 4 89 70...

Страница 45: ...EN UL ISSUE DATE 12 21 2018 4 LOAD POINTS FOR EXE AND EXW UNITS CH MODELS LD22997A Load Point 1 Load Point 2 Load Point 4 Load Point 3 Figure 20 YHAU CH30EXE 500EXE LD22997B Load Point 1 Load Point 2...

Страница 46: ...3 93 8 664 3 93 8 664 3 93 400EXE 10 957 4 97 10 957 4 97 8 774 3 98 8 774 3 98 500EXE 13 073 5 93 13 073 5 93 10 075 4 57 10 075 4 57 630EXW2S 16 006 7 26 11 993 5 44 16 006 7 26 11 993 5 44 700EXW2S...

Страница 47: ...JOHNSON CONTROLS 47 SECTION 4 TECHNICAL DATA 4 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 48: ...12 3 AC460V 3Ph 60Hz 3 0 12 9 3 0 12 9 50EXE AC200V 3Ph 50Hz 32A 160A 1 1 6 9 25 2 1 1 6 9 25 2 AC200V 3Ph 60Hz 6 2 22 2 6 2 22 2 AC220V 3Ph 60Hz 6 1 24 6 6 1 24 6 AC380V 3Ph 50Hz 20A 160A 3 4 12 1 3...

Страница 49: ...0 3 4 1 6 9 0 6 4 5 1 1 03 3 8 1 6 9 0 7 0 5 6 18 1 05 4 0 1 6 9 0 7 2 5 8 50EXE 0 2 2 4 7 0 0 75 3 8 20 6 7 2 5 8 50 2 0 6 8 3 4 20 6 6 5 5 2 2 06 7 6 3 4 20 6 7 0 5 6 1 1 3 0 1 8 9 0 6 7 5 3 36 1 0...

Страница 50: ...0 12 9 160EXE AC200V 3Ph 50Hz 50A 160A 2 2 11 6 48 0 1 1 6 9 25 2 AC200V 3Ph 60Hz 11 4 40 6 6 2 22 2 AC220V 3Ph 60Hz 10 6 44 8 6 1 24 6 AC380V 3Ph 50Hz 32A 160A 6 1 23 0 3 4 12 1 AC380V 3Ph 60Hz 6 2 1...

Страница 51: ...7 6 9 18 1 05 4 0 1 6 9 0 8 9 7 2 160EXE 0 2 2 4 7 0 0 75 3 8 20 6 8 9 7 1 50 2 0 6 8 3 4 20 6 8 3 6 6 2 06 7 6 3 4 20 6 8 7 7 0 1 1 3 0 1 8 9 0 8 5 6 8 36 1 0 2 5 1 8 9 0 8 3 6 7 1 12 3 3 1 8 9 0 8...

Страница 52: ...0EXE AC200V 3Ph 50Hz 50A 160A 3 0 15 6 60 0 2 2 11 6 48 0 AC200V 3Ph 60Hz 14 8 53 2 11 4 40 6 AC220V 3Ph 60Hz 14 4 59 0 10 6 44 8 AC380V 3Ph 50Hz 32A 160A 8 1 29 0 6 1 23 0 AC380V 3Ph 60Hz 8 2 23 0 6...

Страница 53: ...8 1 5 4 7 1 6 9 0 12 6 10 1 500EXE 0 4 3 3 8 8 0 75 3 8 20 6 12 2 9 7 50 2 8 8 2 3 4 20 6 11 5 9 2 2 9 9 0 3 4 20 6 12 2 9 8 1 6 4 2 1 8 9 0 11 9 9 5 36 1 4 3 9 1 8 9 0 11 9 9 5 1 65 4 4 1 8 9 0 12 1...

Страница 54: ...000EXW2S AC200V 3Ph 50Hz 63A 160A 5 5 26 0 132 0 2 2 12 4 42 0 AC200V 3Ph 60Hz 25 0 118 0 11 6 46 0 AC220V 3Ph 60Hz 22 8 130 0 11 0 48 0 AC380V 3Ph 50Hz 40A 160A 14 2 60 0 6 5 20 3 AC380V 3Ph 60Hz 14...

Страница 55: ...3 4 14 0 1 6 9 0 17 4 13 9 1000EXW2S 1 3 7 6 25 6 0 75 3 8 20 6 17 6 14 0 50 7 2 25 0 3 4 20 6 16 7 13 3 7 0 26 0 3 4 20 6 17 1 13 7 3 9 11 9 1 8 9 0 17 7 14 1 36 3 7 10 7 1 8 9 0 17 3 13 8 3 8 12 8...

Страница 56: ...30 0 AC400V 3Ph 50Hz 19 2 72 0 10 1 36 0 AC415V 3Ph 50Hz 18 6 73 5 9 8 37 0 AC400V 3Ph 60Hz 18 0 67 0 9 5 35 0 AC440V 3Ph 60Hz 17 0 73 0 9 0 37 0 AC460V 3Ph 60Hz 16 5 76 0 8 8 38 0 1800EXW4S AC200V 3P...

Страница 57: ...19 7 36 4 9 9 0 1 8 9 0 24 2 19 4 4 5 13 0 1 8 9 0 25 0 20 0 4 4 13 5 1 8 9 0 25 2 20 1 4 2 12 0 1 6 9 0 23 4 18 7 4 0 13 2 1 6 9 0 24 4 19 5 18 3 9 13 8 1 6 9 0 24 8 19 9 1800EXW4S 2 2 12 4 42 0 0 7...

Страница 58: ...JOHNSON CONTROLS 58 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 22 POWER WIRING Electrical Diagram for UL...

Страница 59: ...JOHNSON CONTROLS 59 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 FIGURE 22 POWER WIRING CONT D LD28190_UL...

Страница 60: ...JOHNSON CONTROLS 60 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 23 POWER WIRING Electrical Diagram for UL...

Страница 61: ...JOHNSON CONTROLS 61 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 FIGURE 23 POWER WIRING CONT D LD28191_UL...

Страница 62: ...JOHNSON CONTROLS 62 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 24 PLC INPUT WIRING Electrical Diagram for UL...

Страница 63: ...JOHNSON CONTROLS 63 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 FIGURE 24 PLC INPUT WIRING CONT D LD28192_UL...

Страница 64: ...JOHNSON CONTROLS 64 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 25 PLC INPUT WIRING Electrical Diagram for UL...

Страница 65: ...JOHNSON CONTROLS 65 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28193_UL FIGURE 25 PLC INPUT WIRING CONT D...

Страница 66: ...JOHNSON CONTROLS 66 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 26 PLC OUTPUT WIRING Electrical Diagram for UL...

Страница 67: ...JOHNSON CONTROLS 67 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28195_UL FIGURE 26 PLC OUTPUT WIRING CONT D...

Страница 68: ...JOHNSON CONTROLS 68 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 27 PLC OUTPUT WIRING Electrical Diagram for UL...

Страница 69: ...JOHNSON CONTROLS 69 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28196_UL FIGURE 27 PLC OUTPUT WIRING CONT D...

Страница 70: ...JOHNSON CONTROLS 70 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 28 DISPLAY ANALOG INPUT WIRING Electrical Diagram for UL...

Страница 71: ...JOHNSON CONTROLS 71 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28197_UL FIGURE 28 DISPLAY ANALOG WIRING CONT D...

Страница 72: ...JOHNSON CONTROLS 72 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 29 DISPLAY ANALOG INPUT WIRING Electrical Diagram for UL...

Страница 73: ...JOHNSON CONTROLS 73 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28198_UL FIGURE 29 DISPLAY ANALOG INPUT WIRING CONT D...

Страница 74: ...JOHNSON CONTROLS 74 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA LD28199_UL Figure 30 DISPLAY ANALOG OUTPUT WIRING Electrical Diagram for UL...

Страница 75: ...JOHNSON CONTROLS 75 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28201_UL Figure 31 PLC AND DISPLAY WIRING Electrical Diagram for UL...

Страница 76: ...JOHNSON CONTROLS 76 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA Figure 32 PLC INPUT WIRING Electrical Diagram for UL...

Страница 77: ...JOHNSON CONTROLS 77 SECTION 4 TECHNICAL DATA FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 4 LD28200_UL FIGURE 32 PLC INPUT WIRING CONT D...

Страница 78: ...JOHNSON CONTROLS 78 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 SECTION 4 TECHNICAL DATA LD20543a Figure 33 EXTERNAL CONNECTION TERMINAL DETAILS...

Страница 79: ...1 Supply power source to absorption chiller is de signed as 3 phase 3 wire as a standard 2 See Table 14 on page 80 for information on the breaker capacity 3 Connect to an absorption chiller interlock...

Страница 80: ...oad Analog Signal Allowed Resistance Load 550 Ohm External Absorption Chiller Control Panel Digital Signal Rating Voltage Current DC24 V 7 m A LD20545 STARTING PANEL FOR CHILLED WATER STARTING PANEL F...

Страница 81: ...es and the EXW series of hot water absorp tion chillers Upper Communication System Configuration The configuration of the upper communication system is shown in Figure 38 on page 85 LD20594 Central Mo...

Страница 82: ...included Wiring work for Ethernet connection X Apply twisted pair cable Communication program for central monitoring unit X Refer to this section for the details of the IP address function code commu...

Страница 83: ...ndition 0 or 1 01003 0 STOP 1 OPERATION 7 Refrigerant pump condition 0 or 1 01005 0 STOP 1 OPERATION 8 Load limit condition 0 or 1 01009 0 NORMALLY OPERATION 1 LOAD LIMIT OPERATION 9 Control manipulat...

Страница 84: ...must be performed by the customer to be sure that the communication systems work properly Table 20 SCOPE OF DELIVERY OF UPPER COMMUNICATION SYSTEM ITEM CUSTOMER JCI REMARKS Control panel with upper c...

Страница 85: ...connection These use a GP4000 series COM2 LD20599 RDA RDB SDA SDB SG 100 1 2W 2 3 7 5 4 SG 1 Pin RDB SDA SDB RDA 9 6 CSA ERB CSB ERA 8 100 1 2W Display Shield Slave D sub 9 pin socket Signal name Ext...

Страница 86: ...ce Master Your own cable Pin Signal name Termination resistance Termination resistance Shell FG LD20947 2 3 7 5 4 SG 1 RDB SDA SDB RDA 9 6 CSA ERB CSB ERA 8 100 1 2W SDA SDB RDA RDB SG 100 1 2W FG 2 3...

Страница 87: ...nication path type RS422 RS485 Data Length 8 Bit Stop Bit 1 Bit Parity EVEN Speed 9600 bps Connector D Sub 9pin Function Code Read Coil Status 01 Read Holding Register 03 Device Digital Signal Coil An...

Страница 88: ...A Hearing protection must be worn at all times when op erating the chiller This hearing protection may impact the manner in which operators must communicate to be understood Figure 42 SAMPLE SOUND TES...

Страница 89: ...ble 23 on page 89 to see if your pump rotation is in the right direction The correct direction shows a higher discharge pressure Table 23 ROTARY PUMP ROTATION CORRECTION ROTATION Solution Circulation...

Страница 90: ...not the water flow can become turbulent at the shut off valves and damage the wa ter chamber case and tubes When you need to reduce the quantity of the chilled water cooling water and hot water tempor...

Страница 91: ...erant pump start The hot water control valve opens STOP THE CHILLER 1 Press the STOP button on the Control Panel To stop the chiller from a remote location enter the remote stop signal When the chille...

Страница 92: ...Defective Signal Output Remote Local No 3 minutes Yes Time up Temperature Control running Yes Stop Operation Dilution Time count Hot Water Control Valve close Dilution time increasing Chilled Water R...

Страница 93: ...t pipe entering the chiller and interlock these isolation valves with the chiller control panel It is important for safe and reliable operation of the chiller as well as to prevent potential crystalli...

Страница 94: ...n 5 Unit is located in accordance with minimum clear ance dimensions Required maintenance space is available around the machine 6 Foundation bolts are properly installed 7 The levelness of the unit is...

Страница 95: ...e quirement D Electrical 1 Main and control power supply is available 2 The insulation resistance of each motor and the MCB secondary side is within acceptable range 3 The power supply voltage is set...

Страница 96: ...anel Checks 1 The thermal relays conform to the factory inspec tion sheet 2 The interlock and answerback signals for the fol lowing are available a Chilled water pump b Cooling water pump c Hot water...

Страница 97: ...ot water control valve 17 Press the Control Valve Mode Auto button 18 Check that the hot water control valve works automatically according to the chilled water outlet temperature 19 Press the STOP but...

Страница 98: ..._________________________________________________ ________________________________________________________________ ________________________________________________________________ ____________________...

Страница 99: ...breaker M Standard Within 10 of spec R S V U Gnd V Gnd W Gnd R T V Solution circulation pump M S T V Solution spray pump M R Gnd V Refrigerant pump M S Gnd V Purge pump M T Gnd V Thermal Relay Setting...

Страница 100: ...Flow rate ft3 h FM or calculation 2 Cooling Water Inlet temperature F Control panel 68 89 6 F Outlet temperature F Control panel 68 99 5 F Inlet pressure PSIG Pressure gauge Outlet pressure PSIG Press...

Страница 101: ...Purge Line Flame Reaction Test Standard 4 0 cc min or smaller Reaction Strong Weak None Amount of Gas P cc min Purge Amount from Purge Tank Elapsed time 1 hour Consumed time for measurement m min Tota...

Страница 102: ...JOHNSON CONTROLS 102 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 103: ...0 1 increments Security access using passwords is provided to prevent unauthorized changes of set points There are three lev els of access Each level has its own password There are certain screens di...

Страница 104: ...These are used to change screens The selected button lights when it is active CHANGE NUMERIC VALUES Many numeric values such as the set point and the ranges on the Trend screen can be changed Here s...

Страница 105: ...e control of the microcomputer panel changes to RUN status Turns off if the chiller stops Thermo OFF Lights if the chilled water tem perature falls to the automatic stop temperature Turns off when the...

Страница 106: ...cooling water pump and hot water pump Flickers white during operation Remains black when the pump is stopped 69WC1 or 69WC2 option Differential pressure switch of chilled water 69WC1 and cooling water...

Страница 107: ...Temp temperature of the cool ing water measured as it leaves the condenser Evap Refrigerant Temp temperature of the refriger ant in the evaporator Absorber Temp temperature of the diluted solution in...

Страница 108: ...f the screen gives you access to the operation history alarm history and to the failure history information It con tains four buttons Hourly Operation move to the Hourly Opera tion History screen Minu...

Страница 109: ...of inhibitor is required When maintenance is overdue the maintenance alarm is activated with the warning Solution analysis should be done When the warning appears contact your lo cal Johnson Controls...

Страница 110: ...the screen and the Refrigerant Pump Overhaul section of the screen both indicate the maintenance interval and the current operation hours since the last maintenance When the required maintenance peri...

Страница 111: ...d of the tem perature and the pressure for the following Chilled Water In temperature of the chilled wa ter measured as it enters the evaporator Chilled Water Out temperature of the chilled water meas...

Страница 112: ...operation method local or re mote Sol Pump operation status of the solution pump Ref Pump operation status of the refrigerant pump Ope Hours how many hours the chiller has been op erating Ope Frequen...

Страница 113: ...f the screen The first set gives you access to information about past occurrences For instance if you press the 3 times ago button you will see the settings as they ap peared 3 hours ago The buttons i...

Страница 114: ...or the remote start signal Fail Freq how many times the chiller has had a fail ure alarm Alarm Freq how many times an alarm has been trig gered for the chiller Purge Freq how many times a purge has be...

Страница 115: ...n about past occurrences For instance if you press the 3 times ago button you will see the settings as they ap peared 3 minutes ago The buttons in the History Menu section allow you to move between th...

Страница 116: ...on method Sol Pump operation status of the solution pump Ref Pump operation status of the refrigerant pump Ope Hours total operation hours Ope Freq how many times the chiller has started us ing the OP...

Страница 117: ...percentage that the valve is open There are two sets of buttons on the right side of the screen The first set gives you access to information about past occurrences For instance if you press the 3 ti...

Страница 118: ...peration status of the solution pump Ref Pump operation status of the refrigerant pump Ope Hours total operation hours Ope Freq how many times the chiller has started us ing the OPER button or the rem...

Страница 119: ...percentage that the valve is open There are two sets of buttons on the right side of the screen The first set gives you access to information about past occurrences For instance if you press the 3 ti...

Страница 120: ...ss the FAILURE RESET button to reset the lighted failure button If you press the FAILURE RESET button before fixing the fail ure the lighted failure button will not go out and the buzzer will sound ag...

Страница 121: ...hilled Water Overcool Chilled water outlet temperature fell down abnormally during cooling operation Refrigerant Overcooled Refrigerant temperature fell down abnormally during cooling operation and th...

Страница 122: ...n Hi Temp Prevent Generator High Temperature Prevention Control Generator solution temperature rose to its upper limit or higher The load limit operation was activated The alarm resets when the genera...

Страница 123: ...t temperature sensor and or absorber temperature sensor detected abnormal value due to disconnection short circuit or other reasons Remote setting signal is abnormal during remote SP mode remote chill...

Страница 124: ...Panel or from a remote location The button that is lit indicates if the set point is being set using the Control Panel or from a remote location Setting Base Temp the base temperature for calculat ing...

Страница 125: ...g See the figure below for more information LD20038 Setting Base Temp Remote Setting Diff Setting Base Temp 4 mADC Setpoint C Remote Setpoint Setting Signal 4 20 mADC 20 mADC If a failure occurs autom...

Страница 126: ...FF buttons control the manual purge operation The lit button tells you if the manual purge operation is running or not If you press the Purge Mode Auto button the purge is done auto matically If you p...

Страница 127: ...f sequencer 23AS Turns OFF when the chilled water temperature at the outlet lowers below the set value and turns ON when the chilled water temperature rises above the set value Purging tank pressure s...

Страница 128: ...JOHNSON CONTROLS 128 FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 129: ...chine Improper inspection and maintenance can not only cause a machine malfunction or injury SOLENOID VALVES The absorption chiller is equipped with the following solenoid valves Table 28 SOLENOID VAL...

Страница 130: ...ressure side absorber NOTE Remember Only deionized wa ter may be used as the refrigerant in the chiller PURGE PROCEDURE Air must be purged from the chiller to maintain its per formance and prevent det...

Страница 131: ...t vacuum gauge stands at 0 0 15 PSI abs 5 Reading the vacuum gauge open valve V13 6 Open valve V16 gradually Confirm that the pres sure on the vacuum gauge increases slightly LD19949 EXE Type EXW2 4ST...

Страница 132: ...ress the Purge Pump OFF button The vacuum pump stops For information on how to set up an automatic purge see Automatic Method To Purge Non Condensable Gas From Purging Tank on page 132 AUTOMATIC METHO...

Страница 133: ...JOHNSON CONTROLS 133 SECTION 7 MAINTENANCE FORM 155 30 ICOM2 EN UL ISSUE DATE 12 21 2018 7 LD22003 Figure 59 PROCESS AND INSTRUMENTATION DIAGRAM FOR EXE SERIES CHILLER...

Страница 134: ...alve Chilled Water Cooling Water Hot Water Refrigerant Diluted Solution Concentrated Solution Evaporator Upper Evaporator Lower Hot Water Control Valve P2 P1 P3 Absorber Lower Absorber Upper Condenser...

Страница 135: ...refrigerant depends on the current load condition Constantly check the liq uid level in the refrigerant tank while the refrigerant is refined If the refrigerant liquid level appears in the level gaug...

Страница 136: ...the cap of the refrigerant manual blow down valve V8 NOTE For the location of the refriger ant manual blow valve see Figure 60 on page 134 6 Turn the spindle in the valve to the left with the 0 3 inch...

Страница 137: ...ling water that remains in the absorption chiller may rise to about 158 F When you start the chiller after melting the crys tals discharge the chilled water and cooling water first If that water is le...

Страница 138: ...sure to pull the pulley belt and check the smooth motion of the pulley Monthly C Appearance check Check the outside of the machine for damage leakage for chilled water and cooling water rusting or oth...

Страница 139: ...ection and cleaning of vacuum pump Disassemble inspect and clean the vacuum pump to maintain its capacity 20 000 hrs S Replacement of gaskets of airtight parts Replace the gaskets of the airtight part...

Страница 140: ...or water jet remove them chemically depending on the condition Every 2 years S Chemical cleaning of tubes Evaporator Every 4 years S Chemical cleaning of tubes Generator Every 4 years S Check for slig...

Страница 141: ...ate to the Control Panel Setting screen LD20028_UL LD20028a 2 Press the Purge Mode Manual button 3 Press the Manual Purge ON button The purge solenoid valves open The purge operation begins 4 Press th...

Страница 142: ...ch panel Every 5 years Touch panel Every 30 000 Hr Fan for control panel Every 30 000 Hr Differential pressure switch Every 30 000 Hr Pressure sensor Every 30 000 Hr Resistance temperature sensor Ever...

Страница 143: ...is a closed system CHEMICAL WATER TREATMENT Since the mineral content of the water circulated through the evaporator condenser absorber and gen erator varies the water used may corrode the tubes or d...

Страница 144: ...not explosion proof Highly flammable items gas or liquids should not be handled or stored near the chiller and must be removed Failure to do this may result in explosion injury or damage to the equip...

Страница 145: ...ng water and or the hot water line is an open system 1 Completely drain the water 2 Clean the water systems by passing clear water through the tubes from a position higher than the chiller 3 Fill the...

Страница 146: ...ater system Filled with water Cooling water system Hot water line Inside of shells Vacuum Storage Period more than 6 months Chilled water system Filled with water Cooling water system Hot water line I...

Страница 147: ...er and sets red rust of ferric dioxide Fe2 O3 Iron bacteria propagate Reddish brown Black Fe3 corrodes iron and copper tubes Reddish brown Black Environmental Factors Water smells bad Contains compoun...

Страница 148: ...mgCaCO3 I Less than 200 Less than 70 Less than 70 Less than 70 Less than 70 Less than 70 Calcium Hardness mgCaCO3 I Less than 150 Less than 50 Less than 50 Less than 50 Less than 50 Less than 50 Ioniz...

Страница 149: ...R SYSTEM Chilled Water Strainer Chilled Water Pump Cooling Water Pump Cooling Water Scope of Supply Absorption Chiller Tapping for Chemical Cleaning Cooling Tower Feeding Water Strainer LD19950 NOTE 1...

Страница 150: ...AL CLEANING TO HEAT SOURCE FROM HEAT SOURCE SAFETY VALVE STRAINER HOT WATER PUMP GENERATOR LD22039 FLOW DIVERTING CONTROL WITH THREE WAY VALVE SCOPE OF SUPPLY HOT WATER THREE WAY VALVE TAPPING FOR CHE...

Страница 151: ...00 210 220 CRYSTALLIZATION AREA 6 5 6 0 5 5 5 0 4 5 4 0 4 0 4 5 5 0 5 5 6 0 6 5 7 0 200 200 210 210 220 220 230 230 240 240 250 250 260 260 270 270 280 280 290 290 300 300 310 310 320 320 330 330 340...

Страница 152: ...1 inch 25 4 mm 1 ton refrigeration 12 000 Btu hr 3 52 kW Absorption Liquid Chillers Duhring Diagram PTX Chart 4 4 82 2 87 8 93 3 98 9 104 4 110 0 115 6 121 1 126 7 132 2 137 8 143 3 148 9 154 4 160 0...

Страница 153: ...0 54 93 55 12 55 31 55 49 55 68 55 86 56 05 56 23 56 41 56 59 56 76 56 94 57 11 1 630 55 47 55 66 55 85 56 03 56 22 56 40 56 58 56 76 56 94 57 12 57 29 57 46 57 64 1 640 56 01 56 20 56 38 56 57 56 75...

Страница 154: ...55 50 89 51 10 51 30 51 50 51 69 51 89 52 08 52 28 52 47 52 66 52 84 53 03 53 21 53 40 53 58 53 76 53 94 54 11 54 29 1 56 51 49 51 69 51 89 52 09 52 29 52 48 52 67 52 86 53 05 53 24 53 43 53 61 53 79...

Страница 155: ...pump and chiller unit stop completely then verify the following items Check to see if the main hot water valve was closed by mistake Open the main valve See if the valves of the chilled water system a...

Страница 156: ...cooling water Contact your local Johnson Controls Service Office 6 Solution is crystallized 7 Corrosion inhibitor is worn 8 Air leaks in absorption chiller Table 36 CHILLED WATER OVERCOOLING OR REFRIG...

Страница 157: ...his dilute the solution according to manual refrigerant blowing and diluting method Table 38 ABNORMAL PUMP OPERATION ITEM CAUSE COUNTERMEASURE 1 Bearings of the pump are worn or clogged Contact your l...

Страница 158: ...id not run dilute the solution according to the procedure shown in Manual Refrigerant Blowdown and Diluting Method on page 135 Table 42 ABNORMAL CONTROL SENSOR ITEM CAUSE COUNTERMEASURE 1 Contact fail...

Страница 159: ...absorber See Purge Procedure on page 130 Even if the automatic purge unit is installed purge from the lower pressure side absorber manually 5 Chilled water outlet temperature controller is not set pro...

Страница 160: ...lights or if the vacuum level of the purge line does not reach the specified level during the vacuum pump capacity check Table 45 VACUUM PUMP TROUBLESHOOTING ITEM CAUSE COUNTERMEASURE 1 Deterioration...

Страница 161: ...roller valve and check the strainer for clogging Check the capacity of the cooling tower See Purge Procedure on page 130 Check the capacity of the vacuum pump Check the purge unit for trouble Purge ai...

Страница 162: ...mp oil 3 Wrong operation of purging line switching when vacuum pump capacity was checked See Purge Procedure on page 130 Confirm the valves are open or closed 4 Deterioration of vacuum pump belt Conta...

Страница 163: ...t issues No Yes Dilution time up Yes Stop with dilution operation Hot water pump stop Hot water valve close Dilution time increasing Solution Refrigerant Pump stop Dilution time stops increasing Solut...

Страница 164: ...tart using the Control Panel located on the chiller Monitor until chiller returns to normal operation Purge directly from the absorber Stop the machine to ensure the dilution operation takes place Pow...

Страница 165: ...suit able and safe manner 7 Isolate the unit heat exchanger from the external water systems and drain the heat exchanger sec tion of the system If no isolation valves are in stalled it may be necessar...

Страница 166: ...m Pennsylvania USA 17349 800 861 1001 Subject to change without notice Printed in USA Copyright by Johnson Controls 2018 www johnsoncontrols com ALL RIGHTS RESERVED Form 155 30 ICOM2 EN UL 1218 Issue...

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