Johnson Controls YORK YHAU-CGN Manuals

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Johnson Controls YORK YHAU-CGN Installation, Operation And Maintenance Manual (188 pages)

Double Effect Direct Fired Absorption Chiller-Heater (Mod A)

Brand: Johnson Controls | Category: Industrial Equipment | Size: 28.07 MB

Table of Contents
3
General Safety Guidelines
7
Safety Symbols
7
Changeability of this Document
8
Associated Literature
8
Nomenclature
9
General Chiller-Heater Information and Safety
10
Introduction
10
About this Manual
10
Warranty
10
Quality Assurance
11
High Temperature and Pressure Cleaning
11
Emergency Shutdown
12
Safety Labels
13
Product Description
14
Chiller-Heater Components
14
Control Panel
14
How Direct Fired Units Work
15
Evaporator
17
Absorber
17
Two-Step Evaporator - Absorber
17
Plate Type Heat Exchangers
18
Parallel Flow
18
High Temperature Generator (HTG)
19
Low Temperature Generator (LTG)
19
Condenser
19
Crystallization
20
Why Crystallization Occurs
20
Handling, Storage, Installation and Reassembly
21
Inspection
22
Inspection Window
22
Installation Guidelines
22
Hoisting the Machine
24
Moving the Machine on Rollers
24
Structural Support and Installation
26
Indoor and Outdoor Installation
28
Electrical
28
Precautions for Use
29
Leak Testing
30
Electrical Shock Cautions
31
Use of Gas
31
Use of Oil
31
Vibration and Isolation Details
32
Nozzle Arrangements
32
Fuel Gas and Oil Piping System
35
Hot Insulation or Cold Insulation Procedure
37
Pressure Release Valve and Relief Piping
39
Pressure Release Valve Discharge Pipe Material
40
Pressure Release Valve Piping Construction
40
Rupture Disk and Relief Piping (Option)
41
Rupture Disk Discharge Piping Material
42
Rupture Disk Discharge Piping Construction
42
Rupture Disk Discharge Piping Sizing
43
Technical Data
46
Upper Communication Specification
75
Upper Communication System Configuration
75
Modbus TCP Protocol Communication
75
Connection Port for Ethernet Communication
76
Communication Specification
76
Modbus RTU Protocol Communication
76
User-Created
77
Two-Wire Type Cable Diagrams
78
Four-Wire Type Cable Diagrams
79
Communication Data
81
Noise Emission
83
Commissioning
84
General Guidelines for Use
84
Before Operation
84
Precautions for the Use of Water
85
Chilled or Hot Water Outlet Temperature Controller
86
Liquid Level Gauges
86
Start the Chiller-Heater
86
Stop the Chiller-Heater
87
Interlocking Procedure
87
Operation
99
YHAU-CGN/H Control Center
99
Common Items
99
Change Numeric Values
100
Main Screen
101
Operating Status
102
Data Screen
103
Solution Analysis or Control Panel Parts Replacement Screen
106
Solution Pump Overhaul or Refrigerant Pump Overhaul Screen
107
Burner Parts Replacement or Burner Combustion Check Screen
108
Trend Screen
109
Hourly Operation History Screen
111
Minutely Operation History Screen
113
Failure History Screen
115
Alarm History Screen
117
Failure and Alarm Screen
119
Failure
119
Alarm
122
Setting Screen
123
Control Parameter
123
Valve Operation
125
Date and Time
125
Operation Switch
126
Select Language
126
Single Loop Controller
127
Run Mode
128
Ready Mode
129
Alarm Mode
129
Alarm Codes
130
Operational Display
131
Auto/Manual Mode (RHW Only)
132
Operation Mode Changeover
133
Changeover to Cooling Mode
133
Changeover to Heating Mode
133
Use Simultaneous Residential Hot Water Supply Mode (Option)
134
Changeover to Residential Hot Water Sole Supply Mode (Option)
135
Maintenance
138
Exhaust Duct Inspection
138
Valve Inspection
138
Solenoid Valves
139
Pump Shut off Valves (Option)
139
Air Release Valves and Drain Valves (Option)
139
Purge Valves
139
Start the Chiller-Heater after It Has Been Stopped for a Long Period
139
Checks before Operation Starts
139
Checks after Operation Starts
140
Purge Procedure
140
Capacity Check Method of Vacuum Pump
140
Manual Method to Purge Non-Condensable Gas Directly from Absorber
144
Manual Method to Purge Non-Condensable Gas from the Purge Tank
144
Automatic Method to Purge Non-Condensable Gas from the Purge Tank
145
Refrigerant Refining Method
152
Manual Refrigerant Blow down and Diluting Method
152
Decrystallization Method
153
Indications of Crystallization
153
Decrystallization
153
Precautions for Decrystallization
154
Maintenance Items
154
Refrigerant Pump Manual Stop
156
Purge Manual Start and Stop
157
Lifespan for Various Parts
157
Water Quality Control
159
Chemical Water Treatment
160
Replacement of Water
160
Treatment for Long Stoppage of the Absorption Chiller-Heater
160
Chemical Treatment
160
Flow Speed in Tubes
161
Storage Method of the Chiller-Heater
164
Wet Storage Method
164
Dry Storage Method
164
Precautions against External Damage
165
Storage Method of the Cooling Water During Heating Operation Period
166
Wet Storage
166
Dry Storage
167
Troubleshooting
173
Troubleshooting Performance Issues
177
Vacuum Pump
178
Abnormal Solution and Refrigerant Levels
179
Actions to Take against Power Failure
182
Decommissioning, Dismantling, and Disposal
183
Optional Applications
184
Low Temperature Chilled Water Supply (Model EX(H/S)L and EXW(H/S)L)
184

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