York EX Series Installation, Operation & Maintenance Instructions Manual

Double effect direct fired absorption chiller-heater

Hide thumbs

Table Of Contents

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

Table of Contents

Quick Links

Download this manual

DOUBLE EFFECT DIRECT FIRED

ABSORPTION CHILLER-HEATER

SUPERSEDES:

Form 155.32-ICOM1.EN.GB (1017)

INSTALLATION, OPERATION, MAINTENANCE

155.32-ICOM1.EN.GB (217)

Model YHAU-CGN/H

Series EX/EXW

50 Hz

120 - 1600 TON

422 - 5626 KW

LD20142

Issue Date:

October 13, 2017

Table of Contents

Troubleshooting

Summary of Contents for York EX Series

Page 1 DOUBLE EFFECT DIRECT FIRED ABSORPTION CHILLER-HEATER SUPERSEDES: Form 155.32-ICOM1.EN.GB (1017) INSTALLATION, OPERATION, MAINTENANCE 155.32-ICOM1.EN.GB (217) Model YHAU-CGN/H Series EX/EXW 50 Hz 120 - 1600 TON 422 - 5626 KW LD20142 Issue Date: October 13, 2017...
Page 2 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. which it is situated, as well as severe personal injury or During rigging, installation, operation, maintenance, death to themselves and people at the site. or service, individuals may be exposed to certain com- This document is intended for use by owner-authorized ponents or conditions including, but not limited to:...
Page 3 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 CHANGEABILITY OF THIS DOCUMENT In complying with Johnson Controls’ policy for contin- verify whether the equipment has been modified and uous product improvement, the information contained if current literature is available from the owner of the in this document is subject to change without notice.
Page 4 HEATING CAPACITY DESIGN CAPACITY (RT) N = Standard SYMBOL H = HTG One Size Larger UNIT York Absorption MODEL SERIES NAME Chiller EX=120 - 800 RT NOMINAL CAPACITY DIRECT FIRED EXW=900 ~ 1100 RT NOMINAL CAPACITY FUEL SOURCE EXW3=1200 ~ 1600 RT NOMINAL CAPACITY...
Page 5: Table Of Contents
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 TABLE OF CONTENTS SECTION 1 – GENERAL CHILLER-HEATER INFORMATION AND SAFETY ............11 Introduction ..............................11 About this Manual ............................11 Warranty ................................. 11 Quality Assurance ............................12 High Temperature and Pressure Cleaning ....................12 Safety Labels ..............................
Page 6 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 TABLE OF CONTENTS (CONT'D) SECTION 5 - COMMISSIONING ..........................77 General Guidelines for Use ..........................77 Before Operation ...........................77 Precautions for The Use Of Water ......................... 78 Chilled/Hot Water Outlet Temperature Controller ...................78 Liquid Level Gauges ............................78 Start The Chiller-Heater..........................
Page 7 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 TABLE OF CONTENTS (CONT'D) Capacity Check Method of Vacuum Pump ....................130 Manual Method to Purge Non-Condensable Gas Directly from Absorber ............ 134 Manual Method to Purge Non-Condensable Gas from the Purge Tank ............134 Automatic Method to Purge Non-condensable Gas from the Purge Tank ............
Page 8 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 LIST OF FIGURES FIGURE 1 - YHAU-CGN/H-120~300EX(H/S) and 360EX~1600EXW3(H/S) ............15 FIGURE 2 - Two Step Direct Fired Absorption Chiller-Heater Cycle Diagram (Cooling Mode) ....... 16 FIGURE 3 - Warning ...............................21 FIGURE 4 - Vibration and Isolation Details ......................26 FIGURE 5 - YHAU-CGN/H-120-300EX(H/S) and 360EX(H/S)-1600EXW3(H/S) Nozzle Locations .......
Page 9 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 LIST OF FIGURES (CONT.) 560-1600EXW3(H/S) ........133 FIGURE 53 - Location of Manual Valve in Purging System FIGURE 54 - YHAU- CGN/H Direct Fired Chiller-Heater Flow Diagram - Heating Only (Evaporator) ....136 FIGURE 55 - YHAU- CGN/H Direct Fired Chiller-Heater Flow Diagram - Residential Hot Water (Auxiliary Heat Exchanger) ................................137 FIGURE 56 - YHAU- CGN/H Direct Fired Chiller-Heater Flow Diagram - Simultaneous Cooling and Residential Hot Water Only ..........................138...
Page 10 FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 LIST OF TABLES TABLE 1 - Nozzle Arrangements 120-300EX(H/S) and 360EX(H/S)-1600EXW3(H/S) ..........27 TABLE 2 - Insulating Material and Thickness ......................29 TABLE 3 - Points Requiring Hot/Cold Insulation .....................29 TABLE 4 - Typical Operational Range ........................31 TABLE 5 - Standard Efficiency ..........................32 TABLE 6 - High Efficiency ............................32 TABLE 7 - Physical Data (with Exhaust Gas Temp.
Page 11: Section 1 - General Chiller-Heater Information And Safety
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 1 – GENERAL CHILLER-HEATER INFORMATION AND SAFETY INTRODUCTION WARRANTY YORK YHAU-CG/H absorption chiller-heaters are Johnson Controls warrants YHAU-CG/H chiller- heaters in accordance with the Limited Warranty En- manufactured to the highest design and construction standards to ensure high performance, reliability, and gineered Systems Equipment procedure.
Page 12: Quality Assurance
FORM 155.32-ICOM1.EN.GB SECTION 1 – GENERAL CHILLER-HEATER INFORMATION AND SAFETY ISSUE DATE: 10/13/2017 HIGH TEMPERATURE AND PRESSURE QUALITY ASSURANCE CLEANING Units comply with the following directives: High temperature and pressure cleaning methods • GB/T 18362-2008 Direct fired lithium bromide (e.g., steam cleaning) should not be used on any part absorption water chiller-heater of the pressure system as this may cause operation of the pressure relief device(s).
Page 13: Safety Labels
FORM 155.32-ICOM1.EN.GB SECTION 1 – GENERAL CHILLER-HEATER INFORMATION AND SAFETY ISSUE DATE: 10/13/2017 SAFETY LABELS For safe operation, read the instructions first. Warning: Rotating object Warning: This machine may start auto- matically without prior warning. Caution: Not permissable. Warning: Hot surface. Caution: Risk of tumble Warning: Safety relief valve may dis- charge gas or liquid without prior warning.
Page 14 FORM 155.32-ICOM1.EN.GB SECTION 1 – GENERAL CHILLER-HEATER INFORMATION AND SAFETY ISSUE DATE: 10/13/2017 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
Page 15: Section 2 - Product Description
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 2 – PRODUCT DESCRIPTION The principle of refrigeration is the exchange of heat. • solution heat exchangers to heighten the cycle In absorption liquid chilling, there are four basic heat efficiency exchange surfaces: the evaporator, the absorber, the • pumps to circulate the refrigerant and solution in generator, and the condenser.
Page 16: How It Works (Direct Fired Units)
FORM 155.32-ICOM1.EN.GB SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 10/13/2017 HOW IT WORKS (DIRECT FIRED UNITS) sure of the refrigerant. The vapor pressure of the LiBr The double effect (direct fired) absorption chiller-heat- solution is directly related to the amount of refrigerant er uses water as the refrigerant and lithium bromide (water) present in the solution with the LiBr salt and (LiBr) as the absorbent.
Page 17: Evaporator
FORM 155.32-ICOM1.EN.GB SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 10/13/2017 EVAPORATOR TWO-STEP EVAPORATOR – ABSORBER Liquid refrigerant enters the evaporator and is distrib- The evaporator, as well as the absorber, is split into two uted over the top of the tube bundle. As the refrigerant sections.
Page 18: Plate Type Heat Exchangers
FORM 155.32-ICOM1.EN.GB SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 10/13/2017 PARALLEL FLOW Concentrated LiBr Refrigerant The unique parallel flow divides the solution between the low temperature generator and the high tempera- Chilled ture generator sections into two parallel, balanced Water Evaporator Absorber paths.
Page 19: Condenser
FORM 155.32-ICOM1.EN.GB SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 10/13/2017 CONDENSER Since the solution temperature in the generator is nor- mally high enough in most load conditions, no crystal- The cooling water from the absorber section enters into lization will occur as long as the higher solution tem- the condenser section.
Page 20 FORM 155.32-ICOM1.EN.GB SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 10/13/2017 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
Page 21: Section 3 - Handling, Storage, Installation And Reassembly
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY LD18119 FIGURE 3 - WARNING This chiller-heater is for air conditioning or a cooling Rigging and lifting should only be done by manufacturing process. Transport, store, and use this a professional rigger in accordance with a chiller-heater under the following conditions: written rigging and lifting plan.
Page 22: Inspection
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 INSPECTION STRUCTURAL SUPPORT AND INSTALLATION The unit must be inspected prior to customer use by a Structural support of the unit must be provided as in- Johnson Controls Service representative. All damage dicated for maximum efficiency.
Page 23: Indoor And Outdoor Installation
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 INDOOR AND OUTDOOR INSTALLATION PRECAUTIONS FOR USE This chiller-heater is designed to be used indoors. Ex- Ventilate the storage area as much as possible to keep posure to the elements can compromise the integrity of the humidity low.
Page 24: Leak Testing
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 In the event that the circuit breaker or disconnect If the cables of the solution pump, refrigerant pump, switch is activated, eliminate the cause of the problem burner fan, and/or vacuum pump are disconnected for before restarting the unit.
Page 25: Use Of Gas
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 USE OF GAS VIBRATION AND ISOLATION DETAILS If the smell of gas is present, do not operate the ma- Before installing the unit, fit rubber vibration isolators chine, touch the control panel or press any buttons un- to the unit base as shown in Figure 4 on page 26.
Page 26: Figure 4 - Vibration And Isolation Details
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 Foundation Bolt Washer Rubber Vibration Washer Isolator Base Sole Plate Foundation Bolt Rubber Vibration Isolator Filling with Sole Plate mortar LD20186 FIGURE 4 - VIBRATION AND ISOLATION DETAILS JOHNSON CONTROLS...
Page 27: Figure 5 - Yhau-Cgn/H-120-300Ex(H/S) And 360Ex(H/S)-1600Exw3(H/S) Nozzle Locations
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 TABLE 1 - NOZZLE ARRANGEMENTS 120-300EX(H/S) AND 360EX(H/S)-1600EXW3(H/S) NOZZLE LOCATION EXHAUST YHAU-CGN/H CHILLED/HOT WATER COOLING WATER INLET OUTLET INLET OUTLET INLET OUTLET PASS PASS EX(H/S) 120-300 EVEN EVEN PASS PASS...
Page 28: Figure 6 - Fuel Gas Piping System
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 LOW PRESSURE TYPE (Full Automatic) Standard Air Pressure Switch Gas Pres- sure Blower Low-Limit Switch Electric Operated Pressure Butterfly Valve Gauge Main Safety Main Burner Shut-Off Valve Flow Meter City Gas...
Page 29: Hot Insulation/Cold Insulation Procedure
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 HOT INSULATION/COLD INSULATION PROCEDURE 4. The points that require hot insulation/cold insula- 1. The recommended materials and their thickness tion are shown in Table 3 on page 29. for hot insulation/cold insulation are shown in Table 2 on page 29.
Page 30: Figure 8 - Interior Of Control Panel (Mm)
FORM 155.32-ICOM1.EN.GB SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY ISSUE DATE: 10/13/2017 LD20178 FIGURE 8 - INTERIOR OF CONTROL PANEL (MM) FIGURE 9 - EXTERIOR OF CONTROL PANEL (MM) JOHNSON CONTROLS...
Page 31: Section 4 - Technical Data
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 4 - TECHNICAL DATA This section includes technical information about The numbers shown in Table 4 on page 31 are the the unit, such as weight, dimensions, electrical data, allowable ranges for each parameter. Not all combi- wiring, and sound data.
Page 32: Table 5 - Standard Efficiency
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 5 - STANDARD EFFICIENCY WEIGHTS - CGN WEIGHTS - CGH MAXIMUM EMERGENCY MAXIMUM EMERGENCY YHAU OPERATING OPERATING SHIPPING (FILLED WITH SHIPPING (FILLED WITH (TON) (TON) (TON) WATER) (TON) (TON) WATER) (TON) 120EXS 11.4...
Page 33: Table 7 - Physical Data
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 7 - PHYSICAL DATA (WITH EXHAUST GAS TEMP. APPROXIMATELY 220 °C) OUTLINE DIMENSION HOLDING VOLUME EXHAUST COLD TUBE CHILLED/ COOLING INSULATION YHAU-CGN EXTRACTING INSULATION VOLUME LENGTH WIDTH HEIGHT WATER SPACE AREA M2 AREA M2...
Page 34: Table 9 - Electrical Data
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 9 - ELECTRICAL DATA SOLUTION SOLUTION MAIN BREAKER CIRCULATION PUMP SPRAY PUMP POWER SOURCE YHAU-CGN (V-PH-HZ) RATED FRAME CURRENT SIZE AC380V-3Ph-50Hz 23.0 23.0 120 EX(H/S) 32 A 63 A AC400V-3Ph-50HZ 24.0 3.45...
Page 35: Table 10 - Electrical Data
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 9 - ELECTRICAL DATA (CONT'D) REFRIGERANT VACUUM PUMP BURNER FAN TOTAL TOTAL PUMP SCCR YHAU-CGN CAPACITY CONSUMPTION 12.9 120 EX(H/S) 0.75 0.75 1.12 13.1 10.0 12.9 150 EX(H/S) 0.75 0.75 1.12 13.1...
Page 36 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 10 - ELECTRICAL DATA - CGH SOLUTION SOLUTION MAIN BREAKER CIRCULATION PUMP SPRAY PUMP POWER SOURCE YHAU-CGH (V-PH-HZ) RATED FRAME CURRENT SIZE AC380V-3Ph-50Hz 14.2 60.0 23.0 450 EX(H/S) 40 A 63 A AC400V-3Ph-50Hz 13.5...
Page 37 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 10 - ELECTRICAL DATA - CGH (CONT'D) REFRIGERANT VACUUM PUMP BURNER FAN TOTAL TOTAL PUMP SCCR YHAU-CGH CAPACITY CONSUMPTION 79.8 21.2 17.0 450 EX(H/S) 0.75 1.65 84.0 21.5 17.2 79.8 21.2 17.0...
Page 38: Table 11 - Load Points For High Efficiency - Cgn
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 11 - LOAD POINTS FOR HIGH EFFICIENCY - CGN YHAU-CGN LOAD POINT 1 LOAD POINT 2 LOAD POINT 3 LOAD POINT 4 120EXH 2.38 1.95 2.93 1.49 150EXH 2.38 1.95 2.93 1.49...
Page 39: Table 12 - Load Points For High Efficiency - Cgh
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 12 - LOAD POINTS FOR HIGH EFFICIENCY - CGH YHAU-CGH LOAD POINT 1 LOAD POINT 2 LOAD POINT 3 LOAD POINT 4 120EXH 150EXH 180EXH 240EXH 300EXH 360EXH 400EXH 450EXH 13.0 7.81...
Page 40: Table 13 - Load Points For Standard Efficiency - Cgn
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 13 - LOAD POINTS FOR STANDARD EFFICIENCY - CGN YHAU-CGN LOAD POINT 1 LOAD POINT 2 LOAD POINT 3 LOAD POINT 4 120EXS 2.25 1.84 2.76 1.40 150EXS 2.25 1.84 2.76 1.40...
Page 41: Table 14 - Load Points For Standard Efficiency - Cgh
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 14 - LOAD POINTS FOR STANDARD EFFICIENCY - CGH YHAU-CGH LOAD POINT 1 LOAD POINT 2 LOAD POINT 3 LOAD POINT 4 120EXS 150EXS 180EXS 240EXS 300EXS 360EXS 400EXS 450EXS 12.3 7.43...
Page 42: Table 15 - Split Shipment - High Efficiency - Cgn
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 15 - SPLIT SHIPMENT - HIGH EFFICIENCY - CGN DOUBLE EFFECT STEAM FIRED ABSORPTION CHILLER MAIN SHELL UNIT HX UNIT HG UNIT YHAU-CGN Length Width Height Weight Length Width Height Weight Length...
Page 43: Table 16 - Split Shipment - High Efficiency - Cgh
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 16 - SPLIT SHIPMENT - HIGH EFFICIENCY - CGH DOUBLE EFFECT STEAM FIRED ABSORPTION CHILLER MAIN SHELL UNIT HX UNIT HG UNIT YHAU-CGH Length Width Height Weight Length Width Height Weight Length...
Page 44: Table 17 - Split Shipment - Standard Efficiency - Cgn
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 17 - SPLIT SHIPMENT - STANDARD EFFICIENCY - CGN DOUBLE EFFECT STEAM FIRED ABSORPTION CHILLER MAIN SHELL UNIT HX UNIT HG UNIT YHAU-CGN Length Width Height Weight Length Width Height Weight Length...
Page 45: Table 18 - Split Shipment - Standard Efficiency - Cgh
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 18 - SPLIT SHIPMENT - STANDARD EFFICIENCY - CGH DOUBLE EFFECT STEAM FIRED ABSORPTION CHILLER MAIN SHELL UNIT HX UNIT HG UNIT YHAU-CGH Length Width Height Weight Length Width Height Weight Length...
Page 46: Figure 10 - Power Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Power Source Solution Circulation Solution Spray Refrigerant Pump Pump Pump LD20248 FIGURE 10 - POWER WIRING JOHNSON CONTROLS...
Page 47 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Burner Fan Purge Pump LD20248a FIGURE 10 - POWER WIRING (CONT.) JOHNSON CONTROLS...
Page 48: Figure 11 - Power Supply Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Output PSU1 Surge Switching Absorber Power Supply One Second LD20248 FIGURE 11 - POWER SUPPLY WIRING JOHNSON CONTROLS...
Page 49 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 HT-GEN Solution Level Relay Local HT-GEN High Pressure Relay Input Local LD20250 FIGURE 11 - POWER SUPPLY WIRING (CONT'D) JOHNSON CONTROLS...
Page 50 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Full Full Full Pressure Close Close Open Switch Confirm Confirm Confirm Main Pilot Ignition Shut-Off Flame Valve(1) Transformer Valve(1) Detector Main Pilot Shut-Off Valve(2) Valve(2) LD20251 FIGURE 11 - POWER SUPPLY WIRING (CONT'D) JOHNSON CONTROLS...
Page 51 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Open Close (Control Motor for Air) (Control Motor for Gas) LD20252 FIGURE 11 - POWER SUPPLY WIRING (CONT'D) JOHNSON CONTROLS...
Page 52: Figure 12 - Plc Input Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Input Start Stop Remote Operation Signal (DC24 V Pulse) Start Start Stop Remote Operation/Stop Remote Operation/Stop Signal (Pulse) Signal (Level) If a constantly monitoring cable is used, remove the jumper cable. LD20253 FIGURE 12 - PLC INPUT WIRING JOHNSON CONTROLS...
Page 53 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Input LD20254 FIGURE 12 - PLC INPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 54 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Local Purge Float Switch LD20255 FIGURE 12 - PLC INPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 55 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Gas Pressure Switch Refrigerant Liquid Level Switch LD20255a FIGURE 12 - PLC INPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 56: Figure 13 - Plc Output Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Contact Output Operation Failure Chilled/ Cooling Exhaust Hot Water Water Pump Pump Operation Operation Operation Standard Loop Local LD20256 FIGURE 13 - PLC OUTPUT WIRING JOHNSON CONTROLS...
Page 57 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Operation Failure Alarm Combustion Dilution Cooling/ Remote/ Cooling Water Heating Local Temperature Abnormal LD20256a FIGURE 13 - PLC OUTPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 58 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Contact Output Combustion Command Local Purge Purge Refrigerant Blow Solenoid Solenoid Solenoid Valve Valve Valve (Purge Tank) (Absorber) Automatic Purge with Vacuum Pump LD20257 FIGURE 13 - PLC OUTPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 59 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Buzzer External Signal Output LD20258 FIGURE 13 - PLC OUTPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 60: Figure 14 - Plc Analog Input Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Local T/C 1 T/C 3 RTD 1 RTD 2 Cooling Water Absorber Chilled/Hot Chilled/Hot Inlet Water Inlet Water Outlet LD20259 FIGURE 14 - PLC ANALOG INPUT WIRING JOHNSON CONTROLS...
Page 61 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 T/C 2 T/C 4 T/C 6 RTD 3 Cooling HT-GEN. Exhaust Gas Refrigerant Water Outlet Temperature LD20260 FIGURE 14 - PLC ANALOG INPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 62: Figure 15 - Display/Analog Input Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Touch Panel Current Output (SDC1-PV, SHT 3) Current Output Current Output Current Output (Variable Cooling (Solution Circulation (Solution Spray Water Flow Signal) Pump Frequency Pump Frequency Signal) (Option) Signal) (Option) LD20261 FIGURE 15 - DISPLAY/ANALOG INPUT WIRING JOHNSON CONTROLS...
Page 63 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Current Input (SDC1-FB, SHT3) Current Input Current Input Current Input (Purge Pressure (HT-GEN. (Remote Chilled/Hot Sensor) Pressure Sensor) Water Outlet Temperature Setting Signal) LD20262 FIGURE 15 - DISPLAY/ANALOG INPUT WIRING (CONT'D) JOHNSON CONTROLS...
Page 64: Figure 16 - External Connection Terminal Details
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 AUXILIARY EQUIPMENT PANEL ABSORPTION CHILLER-HEATER CONTROL PANEL (In case of seismoscope relay option, mount it on absorption chiller-heater) FAILURE SIGNAL FAILURE SIGNAL ALARM SIGNAL LD20570 FIGURE 16 - EXTERNAL CONNECTION TERMINAL DETAILS JOHNSON CONTROLS...
Page 65: Figure 17 - 3 Phase 4 Wire Power Supply Wiring
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 19 - CONTACT SPECIFICATIONS CONTACT SPECIFICATION ABSORPTION CHILLER-HEATER DIGITAL SIGNAL MAX. START & STOP VOLTAGE: AC250 V/DC30 V CONTROL PANEL -> EXTERNAL INPUT MAX START & STOP CURRENT: 2 A/1 POINT TERMINAL (RESISTANCE LOAD) MAX START &...
Page 66: Figure 18 - Remote Stop & Start Signal
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 AUXILIARY EQUIPMENT PANEL ABSORPTION CHILLER-HEATER CONTROL PANEL LD20572 FIGURE 18 - REMOTE STOP & START SIGNAL FAILURE SIGNAL LD20573 FIGURE 19 - SIGNAL TERMINAL TRANSITION WIRING JOHNSON CONTROLS...
Page 67 FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 d. Monitor interlock in combustion NOTE(S): ● S uction/exhaust fan interlock, abnormal soot and dust concentration 1. Every unit must be properly grounded.. e. Emergency failure interlock 2. Connect a following interlock if necessary. (The * tells you to make sure to connect.) ● Gas leak detector a.
Page 68: Upper Communication Specification
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 UPPER COMMUNICATION SPECIFICATION The information in this section applies to the CG Se- ries of direct fired absorption chiller-heaters. Upper Communication System Configuration The configuration of the upper communication system is shown in Figure 20 on page 68 Central Monitoring Unit Data concentrator (HUB)
Page 69: Scope Of Delivery
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Scope of Delivery Johnson Controls scope of delivery for the upper com- munication system covers the control panels for the upper communication function. The customer is re- sponsible to deliver all other related equipment: con- centrator (HUB), installation, wiring, communication program for the central monitoring unit, etc.
Page 70: Communication Specification
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Communication Specification TABLE 22 - COMMUNICATION SPECIFICATIONS Communication Protocol Modbus TCP Communication Path Type 10BASE-T/100BASE-TX IP Address (No. 1) 192.168.1.1, (No.2) 192.168.1.2, (No. 3) 192.168.1.3 Subnet Mask 255.255.255.0 Function Code Read Command (Digital Signal) 0.1/Read Coil (Analog Signal) 0.3/Read Holding Register...
Page 71: Table 24 - Write Command
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 13 - READ COMMAND (CONT.) Chilled/Hot water inlet temp. 12.0 °C 00083 0001~4000 unit, 1 unit=0.1°C Chilled/Hot water outlet temp. °C 00085 0001~4000 unit, 1 unit=0.1°C Refrigerant temp. at evaporator °C 00087 0001~4000 unit, 1 unit=0.1°C...
Page 72: User-Created
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 User-Created The diagrams and tables that follow detail some of the work that must be performed by the customer to be sure that the communication systems work properly. Serial interface (COM2) Connect User-Created Cable LD20597b FIGURE 21 - CONNECTION DETAIL FOR D-SUB 9PIN...
Page 73: Figure 22 - 2-Wire 1:1 Connection With User-Created Cable
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 TABLE 26 - CABLE DIAGRAM (RS-422/RS485) PIN CONNECTION PIN. RS-422/RS-485 SIGNAL NAME DIRECTION MEANING Input Receive Data A (+) Input Receive Data B (-) Output Send Data A (+) Output Data Terminal Ready A (+) Signal Ground Input...
Page 74: 4-Wire Type Cable Diagrams
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 (Slave) (Slave) External Device D-sub 9 pin (socket) D-sub 9 pin (socket) (Master) Shield Shield Termination Termination resistance Signal name Signal name resistance Signal name 100 Ω (1/2W) 100 Ω (1/2W) Display Shell Shell...
Page 75: Figure 25 - 4-Wire N:1 Connection With User-Created Cable
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 (Slave) (Slave) External Device D-sub 9 pin (socket) D-sub 9 pin (socket) (Master) Shield Shield Termination resistance Signal name Signal name Signal name 100 Ω (1/2W) Display Termination resistance 100 Ω (1/2W Shell Shell Your own cable...
Page 76: Figure 26 - Sample Sound Testing
FORM 155.32-ICOM1.EN.GB SECTION 4 - TECHNICAL DATA ISSUE DATE: 10/13/2017 Evaporator Side A Side B Side (Flue Gas (Burner Side) Duct Side) Background Noise Generator Side LD20184 OCTAVE BAND LOCATION* OVERALL 31.5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz...
Page 77: Section 5 - Commissioning
Checklist contains specific information for the instal- lation and start-up of the unit. The steps and procedures 5. Operate the pump. MUST be performed by a YORK/Johnson Controls Service person prior to customer use. 6. Open the valve. 7. Read and record the delivery pressure of the solu- All items on the checklist MUST be completed prior to tion pump and the refrigerant pump.
Page 78: Precautions For The Use Of Water
FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 CHILLED/HOT WATER OUTLET PRECAUTIONS FOR THE USE OF WATER TEMPERATURE CONTROLLER Staining and corrosion of the tubes in the evapora- The chilled/hot water outlet temperature controller tor, absorber, and condenser depends on the quality of (23A) is located on the sequencer and controls the the water used as chilled/hot water and cooling water.
Page 79: Start The Chiller-Heater
FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 START THE CHILLER-HEATER STOP THE CHILLER-HEATER Before starting the chiller-heater, review the following: 1. Press the STOP button on the Main screen of the Control Panel. To stop the chiller-heater from a • Check that the refrigerant blow valve (V8) is remote location, enter the remote stop signal.
Page 80: Figure 27 - Cooling Start Diagram
FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 Turn on power source Stop Operation Initialize self-check mechanism Dilution operation starts (1~2 min) Burner stops Remote or local Remote change over Local Combustion stops Remote start operation Local start operation Dilution operation time increases Air conditioning machine...
Page 81: Figure 29 - Direct Fire Sequential Operation Flowchart
FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 Sequential Sequential Operation Operation Chilled/Hot Water Air Conditioner Pump Interlock Sequential Operation Cooling Water Pump Cooling Tower Sequential Operation Interlock Other interlocks, including earthquake sensor, abnormal room temperature sensor, etc NOTES: 1.
Page 82 A. General 1. All major components, boxes, and crates have c. Cooling tower fan ..........been received and accounted for by a YORK/John- d. Residential hot water pump ......... son Controls Service representative..... 3. Detachable flanges are properly installed close to the: 2.
Page 83 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 9. The flow rate is adjusted within acceptable range for: F. Evacuate Nitrogen charge a. Chilled or hot water..........1. Remove the plug in the purge line....... b.
Page 84 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 I. Adjust combustion 16. Check for abnormal noise or vibration..... 1. Manually start each water pump ......17. Confirm that the consumption of fuel gas at low combustion is within acceptable range.
Page 85 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 START UP B. Purge Amount check 1. Verify that the purge amount from the absorber is A. Operation check within acceptable range ........... 2. Close the spindle valve to facilitate purging from 1.
Page 86 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 DIRECT FIRED ABSORPTION CHILLER-HEATER COMMISSIONING DATA SHEET (1/3) User: Model: MFG.No.: User's machine code: Insulation Resistance Electric Power Supply Standard: 5 MΩ or more (with 500 V meg- R-Gnd S-Gnd T-Gnd...
Page 87 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 DIRECT FIRED ABSORPTION CHILLER-HEATER COMMISSIONING DATA SHEET (2/3) cOMBUSTION DATA SPEcIFI- STAN- MEASURED BY MIDDLE hIGh cATION DARD OUTPUT VALUE Control panel FUEL DAMPER POSITION Damper pointer AIR DAMPER POSITION Damper pointer FUEL PRIMARY PRESSURE...
Page 88 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 DIRECT FIRED ABSORPTION CHILLER-HEATER COMMISSIONING DATA SHEET (3/3) User: Model: MFG.No.: User's machine code: Running Data Date: Measured by Specification Standard Output Valve Control panel Fuel Exhaust gas temperature °C Control panel...
Page 89 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 FORM 155.32-CL1 ISSUE DATE: 03/31/2017 TABLE 1 - PURGE AMOUNT MEASUREMENT DATA SHEET (1/1) User: Model: YhAU - MFG.No.: User's machine code: Measured Date: Measured by: Purge Amount from Purge Line Flame Reaction Test Standard: 4.0 cc/min.
Page 90 FORM 155.32-ICOM1.EN.GB SECTION 5 - COMMISSIONING ISSUE DATE: 10/13/2017 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
Page 91: Section 6 - Operation
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 6 – OPERATION YHAU-CGN/H CONTROL CENTER COMMON ITEMS Buttons are listed in the order they are The YHAU-CGN/H Control Center, furnished as stan- seen on the screen: left to right and top dard on each chiller-heater, allows for efficiency, mon- to bottom.
Page 92: Change Numeric Values
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 When you press the OPER. button while the chiller- CHANGE NUMERIC VALUES heater is stopped, or STOP while the chiller-heater is Many numeric values, such as the set point and the operating, a confirmation message appears.
Page 93: Operating Status
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 MAIN SCREEN LD20135 LD20135 FIGURE 31 - MAIN SCREEN • Thermo OFF: In cooling mode, lights if the The Main screen displays the equipment status (chill- er-heater start or stop, operating, pumps ON or OFF, chilled water temperature falls to the automatic stop temperature.
Page 94 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 An illustration of the system shows the following in- 69WC1 / 69WC2(option) formation: Differential pressure switch of chilled/hot water • Fuel Gas Control Valve Control Output (69WC1) and cooling water (69WC2) • Chilled/Hot Water Entering or Leaving Tempera- - Black when water is flowing.
Page 95: Figure 32 - Data Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 DATA SCREEN LD20136 LD20136 FIGURE 32 - DATA SCREEN The Data Screen displays values showing tempera- HT Generator Temp.: temperature of the concentrat- tures, operating hours, operating frequency, data trends ed solution in the high temperature generator and a history of failures, alarms, and time based tem- HT Generator Pressure: pressure in the high temper- perature trends.
Page 96 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 • Heating: how long the chiller-heater has been The History Menu section on the right side of the running in heating mode screen gives you access to the operation history, Alarm History and to the Failure History screens.
Page 97: Figure 33 - Solution Analysis / Control Panel Parts Replacement Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 SOLUTION ANALYSIS / CONTROL PANEL PARTS REPLACEMENT SCREEN LD21347 FIGURE 33 - SOLUTION ANALYSIS / CONTROL PANEL PARTS REPLACEMENT SCREEN The Solution Analysis section of the screen shows the The Control Panel Parts Replacement section of the maintenance interval and current operation hours since screen shows the maintenance interval and current op- the last inhibitor solution maintenance.
Page 98: Figure 34 - Solution Pump Overhaul / Refrigerant Pump Overhaul Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 SOLUTION PUMP OVERHAUL / REFRIGERANT PUMP OVERHAUL SCREEN LD21554 FIGURE 34 - SOLUTION PUMP OVERHAUL / REFRIGERANT PUMP OVERHAUL SCREEN The Solution Pump Overhaul section of the screen and When the required maintenance period has passed, the the Refrigerant Pump Overhaul section of the screen maintenance alarm is activated with the warning, "So- both indicate the maintenance interval and the current...
Page 99: Figure 35 - Burner Parts Replacement/ Burner Combustion Check Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 BURNER PARTS REPLACEMENT/ BURNER COMBUSTION CHECK SCREEN LD21979 LD21554 FIGURE 35 - BURNER PARTS REPLACEMENT/ BURNER COMBUSTION CHECK SCREEN The Burner Parts Replacement section of the The Burner Combustion Check section of the screen in- dicates the maintenance interval and current operation screen displays the maintenance interval and cur- hours since the last maintenance of the burner combus-...
Page 100: Figure 36 - Trend Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TREND SCREEN LD20277 LD20277 FIGURE 36 - TREND SCREEN To view the Trend Screen, press the Trend button The display ranges in the Trend screen can be changed. above the History Menu section on the Data screen. This screen graphically illustrates the trend of the tem- perature and the pressure for the following: • Chilled/Hot Water Inlet: temperature of the...
Page 101: Figure 37 - Hourly Operation History
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 HOURLY OPERATION HISTORY SCREEN LD20279 LD20279 FIGURE 37 - HOURLY OPERATION HISTORY Combustion: status of the combustion (ON or OFF) To view the Hourly Operation History screen, press the Hourly Operation button in the History Menu screen Operation Hours: how many hours the chiller-heater section of the Data screen.
Page 102 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 The Cooling Water section shows you: Control Valve: percentage that the valve is open Inlet Temperature: temperature of the cooling water There are two sets of buttons on the right side of the measured as it enters the absorber.
Page 103: Figure 38 - Minutely Operation History
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 MINUTELY OPERATION HISTORY SCREEN LD20280 LD20280 FIGURE 38 - MINUTELY OPERATION HISTORY Operation Freq.: how many times the chiller-heater To view the Minutely Operation History screen, press has started using the OPER. button or a remote start the Minutely Operation button in the History Menu signal section of the Data screen.
Page 104 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Outlet Temp.: temperature of the cooling water mea- There are two sets of buttons on the right side of the screen. The first set gives you access to information sured as it leaves the condenser. about past occurrences.
Page 105: Figure 39 - Failure History Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 FAILURE HISTORY SCREEN LD20941 FIGURE 39 - FAILURE HISTORY SCREEN You move to the Failure History screen after you press Operation Freq.: how many times the chiller-heater the Failure button in the History Menu screen section. has started using the OPER.
Page 106 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Outlet Temp.: temperature of the cooling water mea- There are two sets of buttons on the right side of the sured as it leaves the condenser. screen. The first set gives you access to information about past occurrences.
Page 107: Figure 40 - Alarm History Screen
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 ALARM HISTORY SCREEN LD20281 LD20281 FIGURE 40 - ALARM HISTORY SCREEN View the Alarm History screen after you press the Operation Freq.: how many times the chiller-heater Alarm button in the History Menu section of the has started using the OPER.
Page 108 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Outlet Temp.: temperature of the cooling water mea- There are two sets of buttons on the right side of the sured as it leaves the condenser. screen. The first set gives you access to information about past occurrences.
Page 109: Failure
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 FAILURE AND ALARM SCREEN LD20285 LD20282 FIGURE 41 - FAILURE AND ALARM SCREEN This screen displays failure indications (time-outs, op- eration interlock, overcooled refrigerant, over and un- der temperatures, and problems with the unit's pumps) and system alarms.
Page 110: Table 30 - Failure List
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TABLE 30 - FAILURE LIST OPERATION FAILURE AT FAILURE CAUSE COUNTER MEASURES NAME OCCURRENCE Chilled/Hot water pump • Check the chilled/hot water pump. Chilled/Hot operation interlock and/or the • Check the chilled/hot water line. Water Time chilled/hot water suspension •...
Page 111 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TABLE 20 - FAILURE LIST (CONT'D) OPERATION FAILURE AT FAILURE CAUSE COUNTER MEASURES NAME OCCURRENCE Emergency Stop without Emergency failure interlock Check equipment connected as emergency failure Failure dilution was not established. interlock components.
Page 112: Table 31 - Alarm List
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TABLE 20 - FAILURE LIST (CONT'D) OPERATION FAILURE AT FAILURE CAUSE COUNTER MEASURES NAME OCCURRENCE Temperature sensor and/ or pressure sensor detected Control Sensor Stop after • Tighten terminal in control panel. abnormal value due to Abnormal dilution...
Page 113 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TABLE 21 - ALARM LIST (CONT'D) CAUSE OF ALARM AND ALARM NAME COUNTER MEASURES CONDITION TO RESET Temperature difference between the absorber temperature and cooling water • Check the cooling water line. Cooling Water Tube inlet temperature widened, therefore fouling •...
Page 114: Control Parameter
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 SETTING SCREEN LD20138 LD20138 FIGURE 42 - SETTING SCREEN Set Point (Display): the setpoint of the chilled/hot wa- This screen displays control parameters (setting method and each setting parameter), valve operation ter leaving temperature (control valve mode auto / manual, and valve position Auto.
Page 115: Valve Operation
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 VALVE OPERATION Setting Base Control Valve Mode: Auto / Manual indicates wheth- Temp. er the control valve is being operated automatically or manually. To change to manual operation mode, press Remote and hold the Manual button for 3 seconds.
Page 116: Date And Time
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 DATE AND TIME Forced Dilution: indicates whether forced dilution is on or off. The date and time settings can be changed if you press the Date and Time button above the Main button. The Refrigerant Pump: indicates whether the refrigerant Date and Time screen displays.
Page 117: Single Loop Controller
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 SINGLE LOOP CONTROLLER Mode Indicator: lights to indicate which opera- tional mode is active for the unit. The available The YHAU-CGN/H chiller-heater may have additional lights are: controllers. Each SDC35 Single Loop Controller is lo- cated to the left of the touch screen on the Control Pan- a.
Page 118: Run Mode
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Display Key: Changes the display item in the op- The Multi-Status Display functions as a simple bar eration display mode graph when the unit is in RUN mode. The graph tells you what the control output of the unit is from 0~100%.
Page 119: Alarm Mode
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Alarm Mode When the controller receives an alarm signal, the Up- per Display flashes slowly. The information in the dis- play alternates between the normal information and the alarm code. In addition, the Multi-Status Display lights ripple through the left and right lights.
Page 120: Alarm Codes
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Alarm Codes The following table contains the alarm codes for the controller, the name of the failure that triggered the alarm, the cause of the alarm, and the action needed to correct the problem.
Page 121: Air Damper Control
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Operational Display Air Damper Control When the controller is being used to manage the Air Damper, press the Display key to view the following: • Upper Display: Air damper opening (shown as a %) or Fb (feedback value is indicated in the lower display) • Lower Display: Control target of air damper...
Page 122: Hot Water Control Valve
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Hot Water Control Valve When the controller is being used to manage the Hot Water Control Valve, press the Display key to view the following: • Upper Display: The Hot water control valve opening (shown as a %) or Fb (feedback value is indicated in the lower display)' • Lower Display: The Control target of the hot...
Page 123: Auto/Manual Mode (Rhw Only)
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 AUTO/MANUAL Mode (RHW only) The ability to choose between automatic and manual mode is available when the controller is being used to manage the residential hot water control valve. It is not available for any other mechanism.
Page 124: Operation Mode Changeover
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 Changeover to Heating Mode OPERATION MODE CHANGEOVER 1. Select the appropriate method to treat the cooling Changeover to Cooling Mode water in the absorber and condenser tubes during 1. Press and hold the Operation Mode Cooling but- the heating operation period.
Page 125: Changeover To Residential Hot Water Sole Supply Mode (Option)
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 2. Press the Simultaneous ON button on the Setting 6. Open the refrigerant manual blow valve. For the screen. See Figure 42 on page 114. location of the refrigerant manual blow valve, see Figure 51 on page 131, Figure 52 on page 132, 3.
Page 126: Figure 50 - Changeover Valve Locations
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 18. While the chiller-heater is stopping, purge the purging tank, See Manual Method to Purge Non- Condensable Gas from the Purge Tank on page 134 . 19. Close all of the manual valves in the purge line (V10, V11, V12, V13, V14, V15, and V16).
Page 127: Table 33 - Changeover Valve Operation
FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 TABLE 33 - CHANGEOVER VALVE OPERATION OPERATION VALVE OPERATION/LOCATION MODE HG ->E E->A LG ->C HG Sol HG Sol LG->HG Purge valves Supply Return Return Supply Return Return Cooling Ø Ø Ø...
Page 128 FORM 155.32-ICOM1.EN.GB SECTION 6 – OPERATION ISSUE DATE: 10/13/2017 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
Page 129: Section 7 - Maintenance
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 7 – MAINTENANCE When inspecting and maintaining the absorption chill- SOLENOID VALVES er-heater, observe the following items: The absorption chiller-heater is equipped with the fol- lowing solenoid valves. • Never splash water over the electrical parts in- stalled to the control panel and absorption chiller- TABLE 34 - SOLENOID VALVES heater.
Page 130: Start The Chiller-Heater After It Has Been Stopped For A Long Period
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 START THE CHILLER-HEATER AFTER IT HAS PURGE PROCEDURE BEEN STOPPED FOR A LONG PERIOD Air must be purged from the chiller-heater to maintain When starting the chiller-heater after stopping it for a its performance and prevent deterioration of its internal long period, check it according to the following pro- parts.
Page 131: Figure 51 - Location Of Manual Valve In Purging System 120-300Ex(H/S)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 Gas Duct Side View Evaporator Side View 120-300EX(H/S) 180EX(S/H)NG - 300EX(S/H)NG LD20189 Purge valve from purge tank (V10) Purge valve from absorber (V13) Purge valve from absorber (V11) Purge Main Valve (V14) Purge valve from absorber (V16) C/H Changeover Valve VL (Option) Refrigerant Blow Valve (V8)
Page 132: Figure 52 - Location Of Manual Valve In Purging System 360-500Ex(H/S)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 360-500EX(H/S) 360EX(S/H)NG - 500EX(S/H)NG LD20190 Gas Duct Side View Evaporator Side View Purge valve from absorber (V10) Purge valve from absorber (V11) Purge valve from absorber (V13) Purge valve from absorber (V16) Purge main valve (V14) C / H changeover valve VL (Option) Refrigerant blow valve (V8)
Page 133: Figure 53 - Location Of Manual Valve In Purging System 560-1600Exw3(H/S)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 Gas Duct Side View Evaporator Side View 560EX(S/H)NG - 1250EX(S/H)NG 560-1600EXW3(H/S) LD20191 C / H Changeover Valve VL (Option) Refrigerant Blow Valve (V8) Refrigerant pump Purge valve from absorber (V10) Purge valve from absorber (V11) Purge main valve (V14) 560-1600EXW3(H/S) FIGURE 53 - LOCATION OF MANUAL VALVE IN PURGING SYSTEM...
Page 134: Manual Method To Purge Non-Condensable Gas Directly From Absorber
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 MANUAL METHOD TO PURGE NON- MANUAL METHOD TO PURGE NON- CONDENSABLE GAS DIRECTLY FROM CONDENSABLE GAS FROM THE PURGE ABSORBER TANK When the chiller-heater operates at a lower capacity While the absorption chiller-heater operates, non- than usual for a long period of time or when it restarts condensable gas collects in the purging tank.
Page 135: Automatic Method To Purge Non-Condensable Gas From The Purge Tank
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 AUTOMATIC METHOD TO PURGE NON- CONDENSABLE GAS FROM THE PURGE TANK This chiller-heater has an automatic purge system. The vacuum pump starts and stops by detecting the pressure inside the purge tank. 1.
Page 136: Figure 54 - Yhau- Cgn/Hdirect Fired Chiller-Heater Flow Diagram - Heating Only (Evaporator)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 FIGURE 54 - YHAU- CGN/H DIRECT FIRED CHILLER-HEATER FLOW DIAGRAM - HEATING ONLY (EVAPORATOR) JOHNSON CONTROLS...
Page 137: Figure 55 - Yhau- Cgn/H Direct Fired Chiller-Heater Flow Diagram - Residential Hot Water (Auxiliary Heat Exchanger)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 FIGURE 55 - YHAU- CGN/H DIRECT FIRED CHILLER-HEATER FLOW DIAGRAM - RESIDENTIAL HOT WATER (AUXILIARY HEAT EXCHANGER) JOHNSON CONTROLS...
Page 138: Figure 56 - Yhau- Cgn/H Direct Fired Chiller-Heater Flow Diagram - Simultaneous Cooling And Residential
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 FIGURE 56 - YHAU- CGN/H DIRECT FIRED CHILLER-HEATER FLOW DIAGRAM - SIMULTANEOUS COOLING AND RESIDENTIAL HOT WATER ONLY JOHNSON CONTROLS...
Page 139: Figure 57 - Yhau- Cgn/H Direct Fired Chiller-Heater Flow Diagram - Simultaneous Heating And Residential
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 FIGURE 57 - YHAU- CGN/H DIRECT FIRED CHILLER-HEATER FLOW DIAGRAM - SIMULTANEOUS HEATING AND RESIDENTIAL HOT WATER JOHNSON CONTROLS...
Page 140: Figure 58 - Process And Instrumentation Diagram - Cooling Only
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 317-2215780 FIGURE 58 - PROCESS AND INSTRUMENTATION DIAGRAM - COOLING ONLY JOHNSON CONTROLS...
Page 141: Figure 59 - Yhau- Cgn/H Direct Fired Chiller-Heater Flow Diagram - Cooling Only
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 35 - PURGE VALVE OPERATION VALVE OPERATION/LOCATION PURGING OPERATION PATTERN Check capacity of vacuum pump – × × × Preparation × × Direct purging from absorber Starting purging × Preparation ×...
Page 142: Refrigerant Refining Method
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 REFRIGERANT REFINING METHOD MANUAL REFRIGERANT BLOW DOWN AND DILUTING METHOD Remember: Only deionized water may be used as the refrigerant in the chiller- When the chiller-heater stops suddenly due to a power heater! failure, the solution can become crystallized.
Page 143: Decrystallization Method
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 DECRYSTALLIZATION METHOD DECRYSTALLIZATION Even if the solution in the absorption chiller-heater is 1. Stop the chiller-heater. If the solution pump crystallized during operation, it can be melted if the tripped, reset the thermal relay. crystallization is not severe.
Page 144: Precautions For Decrystallization
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 11. Re-connect the electrical wiring of the solution PRECAUTIONS FOR DECRYSTALLIZATION pump. • Cycle the chilled or hot and cooling water pumps 12. Press the Forced Dilution ON button. The solu- off and on during the melting process.
Page 145: Table 36 - Maintenance And Inspection
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 36 - MAINTENANCE AND INSPECTION TASK CONTENTS FREQUENCY SCOPE Recording of operation Collect the operation data (Refer to 155.31-CL1) and check the Weekly data data with the data collected during the factory test. Check of liquid level See Table 43 on page 168.
Page 146 FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 26 - MAINTENANCE AND INSPECTION (CONT'D) TASK CONTENTS FREQUENCY SCOPE The solution is not consumed, but the refrigerant is discharged little by little each time purging is performed. If the quantity yearly Check of quantity of of the refrigerant becomes insufficient, the condensation...
Page 147 FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 26 - MAINTENANCE AND INSPECTION (CONT'D) TASK CONTENTS FREQUENCY SCOPE Check of operation of Check the operation of the safety relays periodically. various safety relays yearly Cleaning of tubes with brush or water jet If foreign matter sticks to the inside of the tubes of the chiller- (Absorber, condenser) heater, refrigerating performance is lowered and the tubes...
Page 148: Refrigerant Pump Manual Stop
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 4. Press the Manual Purge OFF button when the Refrigerant Pump Manual Stop purge process is complete. The refrigerant pump can be stopped manually for maintenance purposes. It can be stopped even while 5.
Page 149: Table 37 - Lifespan Of Common Parts
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 ence only. The replacement period may be changed according to the actual environment, frequency of use, etc. Other parts may need to be replaced if used incorrectly.) TABLE 37 - LIFESPAN OF COMMON PARTS APPLICABLE MODELS LIFESPAN OF DESCRIPTION...
Page 150: Water Quality Control
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 27 - LIFESPAN OF COMMON PARTS (CONT'D) APPLICABLE MODELS LIFESPAN OF DESCRIPTION OR SECTIONS COMMON PARTS Differential Pressure Switch YPS-C104Q/ 69WC1(69WC2) Pressure Switch 63SH1 (69AP1)(69AP2) Pressure Sensor PA-830-102A-10 Resistance Temp. Sensor Pt100 Ω...
Page 151: Chemical Water Treatment
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 CHEMICAL WATER TREATMENT CHEMICAL TREATMENT Since the mineral content of the water circulated Corrosion inhibitors are attracted chemically to the through the evaporator, condenser, and absorbers var- metal surfaces when the latter are corroded or they ies, the water used may corrode the tubes or deposit form inert protective compounds over the metal sur- heat resistant scale in them.
Page 152: Table 38 - Tendency Of Generation Of Scales And Corrosion By Quality Of Cooling Water
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 38 - TENDENCY OF GENERATION OF SCALES AND CORROSION BY QUALITY OF COOLING WATER GENERAL TENDENCY QUALITY OF COOLING WATER SCALE AND ITS COLOR CORROSION AND ITS COLOR Dark brown Hard scales are generated Bad corrosion of iron ~ Pale...
Page 153: Table 39 - Chilled/Hot And Cooling Water Quality Control (Maximum Concentrations)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 39 - CHILLED/HOT AND COOLING WATER QUALITY CONTROL (MAXIMUM CONCENTRATIONS) COOLING WATER SYSTEM CHILLED/HOT WATER NON- TENDENCY CIRCULATING SYSTEM CIRCULATING TYPE WATER ELEMENT (1) (6) CIRCULATING CIRCULATING REPLENISH PASSING WATER REPLENISH WATER WATER...
Page 154: Storage Method Of The Chiller-Heater
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 Circulating Power Supply/Instrumentation Telephone line Drain from Chiller-Heater, Header Drainage Purge, and Safety Valve (for remote monitoring) Equipment Replenishment Water Tapping for Chemical Tapping for Chemical Cleaning Control Panel Cleaning Air Vent ①...
Page 155: Dry Storage Method
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 The wet storage procedure is as follows if either chilled/ PRECAUTIONS AGAINST EXTERNAL hot line or the cooling water line is an open system: DAMAGE Avoid storing the machine in a place that is easily ac- 1.
Page 156: Table 40 - Wet Storage Method
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 TABLE 40 - WET STORAGE METHOD PART STORAGE METHOD NOTES Chilled/hot water line 1. The manual valve on the purge piping should be fully Filled with water Storage Period; closed See Figure 51 on page 131. Cooling water line 2.
Page 157: Storage Method Of The Cooling Water During Heating Operation Period
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 Do NOT leave the any poor quality cool- STORAGE METHOD OF THE COOLING ing water in the Absorber and Condenser WATER DURING HEATING OPERATION tubes. If you do, the heat transfer tubes PERIOD will be at high risk of corrosion.
Page 158: Work Procedure
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 Start/stop signal for cooling tower fan Cooling Tower Open/close signal for three way valve Open slightly Thermometer Thermometer Chiller-Heater Close Strainer Drain valve Drain valve Cooling water pump Close Close Filled with water LD20942 FIGURE 61 - WET STORAGE DURING HEATING OPERATION PERIOD Work Procedure...
Page 159: Work Procedure
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 LD21006 FIGURE 62 - DRY STORAGE DURING HEATING OPERATION PERIOD Work Procedure 1. Drain all of the cooling water from the absorber and the condenser. 2. Flow the clean water from the higher location than the chiller-heater, and then feed the clean water continuously and clean the tubes well.
Page 160: Figure 63 - Duhring Diagram / Ptx Chart (°F)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 LD14221a FIGURE 63 - DUHRING DIAGRAM / PTX CHART (°F) JOHNSON CONTROLS...
Page 161: Figure 64 - Duhring Diagram / Ptx Chart (°C)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 FIGURE 64 - DUHRING DIAGRAM / PTX CHART (°C) JOHNSON CONTROLS...
Page 162: Figure 65 - Specific Gravity - Concentration (°F)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 SPECIFIC GRAVITY - CONCENTRATION TABLES AQUEOUS LiBr SOLUTIONS Refrigerant Table (%LiBr by Weight) Temperature F S.G. 1.00 –– –– –– –– –– –– 0.08 0.18 0.28 0.37 0.47 0.57 0.67 1.01 0.98 1.08 1.17...
Page 163: Figure 66 - Specific Gravity - Concentration (°C)
FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 SPECIFIC GRAVITY – CONCENTRATION TABLES AQUEOUS LiBr SOLUTIONS Refrigerant Table (%LiBr by Weight) Temperature °C S.G. 10.0 12.8 15.6 18.3 21.1 23.9 26.7 29.4 32.2 35.0 37.8 1.00 0.08 0.18 0.28 0.37 0.47 0.57...
Page 164 FORM 155.32-ICOM1.EN.GB SECTION 7 – MAINTENANCE ISSUE DATE: 10/13/2017 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
Page 165: Section 8 - Troubleshooting
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 8 – TROUBLESHOOTING If the chiller-heater has any problems or an abnormal • Open the main valve. condition is detected while it operates, find the cause. • See if the valves of the chilled/hot system and Use the procedures listed below to fix the problem.
Page 166: Table 42 - Troubleshooting The High Temperature Generator
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 TABLE 42 - TROUBLESHOOTING THE HIGH TEMPERATURE GENERATOR ITEM CAUSE COUNTERMEASURE • See if the cooling water supply rate conforms to the specification. (Check the flow Cooling water is insufficient meter, discharge pressure of the cooling water pump, current, etc.) or suspended.
Page 167: Table 44 - Chilled Or Hot Water Time Out Or Cooling Water Time Out
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 TABLE 44 - CHILLED OR HOT WATER TIME OUT OR COOLING WATER TIME OUT ITEM CAUSE COUNTERMEASURE Pump abnormal Check the water pump. Insufficient water flow • Check the water line. •...
Page 168: Table 49 - Chilled Or Hot Water Suspension
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 In the case of water suspension, the absorp- hilled/hot tion chiller-heater does not dilute the solution, but stops immediately. If the absorption chiller-heater is left as it is, the solution in it may be crystallized in 4-5 hours.
Page 169: Troubleshooting Performance Issues
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 TROUBLESHOOTING PERFORMANCE ISSUES If the performance is insufficient while the capacity control valve is fully opened or if the capacity control valve does not fully open while the load is sufficient, check numbers 1-6 in the following table in order.
Page 170: Vacuum Pump
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 VACUUM PUMP When the Purge Abnormal Alarm lights, the vacuum pump needs to be disassembled for inspection. Contact your local Johnson Controls Service Center. When the Abnormal Purge Frequency Alarm lights or the vacu- um level of the purging line did not reach the speci- fied level during the vacuum pump capacity check, the whole of the purge line needs to be inspected.
Page 171: Abnormal Solution And Refrigerant Levels
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 ABNORMAL SOLUTION AND REFRIGERANT LEVELS Causes of abnormal levels of solution and refrigerant and countermeasures against them are shown below If the level of the solution or refrigerant is abnormal, cor- rect it according to the following procedure.
Page 172: Table 54 - Insufficient Vacuum Levels
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 TABLE 54 - INSUFFICIENT VACUUM LEVELS Causes of insufficient vacuum level of the purge line and countermeasure against it ITEM CAUSE COUNTERMEASURE Purge pump trouble Contact your local Johnson Controls Service Office. Deterioration of vacuum pump oil.
Page 173: Figure 67 - Troubleshooting Sequence Flow Chart
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 Emergency stop Audible alarm Failure indicator External outlet (buzzer) “ON” light “ON” issues Stop dilution operation? Reset operation (buzzer “OFF”) • Operation interlock Dilution operation time • Cooling water pump interlock calculation •...
Page 174: Actions To Take Against Power Failure
FORM 155.32-ICOM1.EN.GB SECTION 8 – TROUBLESHOOTING ISSUE DATE: 10/13/2017 ACTIONS TO TAKE AGAINST POWER FAILURE If the main power fails, take the following actions. Power failure Chiller-Heater stops Power is restored Power failure interval is shorter Continue running machine than the controller back up interval Power failure interval is shorter than 5 minutes Power failure interval is shorter...
Page 175: Section 9 - Decommissioning, Dismantling, And Disposal
FORM 155.32-ICOM1.EN.GB ISSUE DATE: 10/13/2017 SECTION 9 - DECOMMISSIONING, DISMANTLING, AND DISPOSAL Unless otherwise indicated, the operations described 7. After draining, disconnect and remove the water. below can be performed by any properly trained main- 8. Remove fixing down bolts, and then lift the unit tenance technician. from position, using the points provided and equipment with adequate lifting capacity.
Page 176 5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 800-861-1001 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2017 www.johnsoncontrols.com ALL RIGHTS RESERVED Form 155.32-ICOM1.EN.GB (1017) Supersedes: 155.32-ICOM1.EN.GB (217) Issue Date: October 13, 2017...

This manual is also suitable for:

Exw series Yhau-cgn-120exs Yhau-cgn-150exs Yhau-cgn-180exs Yhau-cgn-240exs Yhau-cgn-300exs ... Show all

York EX Series Installation, Operation & Maintenance Instructions Manual

Quick Links

Troubleshooting

Related Manuals for York EX Series

Summary of Contents for York EX Series

This manual is also suitable for:

Table of Contents