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Lochinvar
Water Heater
LHC 119
Lochinvar LHC 119 User Manual
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Commercial Electric W
ater Heaters • 43
DIAGRAMS
WIRING DIAGRAMS
Figure 1
1.
120 V
AC Control Circuit T
ransformer Connections - Electronic Control Models
42
44
Table of Contents
Table of Contents
2
Safe Installation, Use, and Service
3
Important Definitions
3
Approvals
3
General Safety Information
4
Do Not Operate if Damaged
4
Grounding Instructions
4
Limiting the Risk of Scalding
4
Hydrogen Gas (Flammable)
4
Hazard Messages
5
Introduction
7
Preparing for the Installation
7
General
7
Features and Components
8
LHS/LHC Model Differences
8
Model and Rating Plate
10
Installation Considerations
11
Locating the Water Heater
11
Installing the Water Heater
12
Required Ability
12
Thermostatic Point-Of-Use Mixing Valves
12
Contaminated Water
12
Circulating Pump
13
Insulation Blankets
13
Temperature-Pressure Relief Valve
13
Water Line Connections
14
Closed Water Systems
14
Thermal Expansion
14
Electrical
14
Start up and Operation
17
Filling the Water Heater
17
Initial Start up
17
Temperature Regulation
18
Limiting the Risk of Scalding
18
High Temperature Limit Controls (ECO)
18
Surface Mount Control Models
18
Electronic Control Models
18
Thermostat Controls
18
Thermostat Settings - Surface Mount Control
19
Thermostat Settings - Electronic Controls
19
Control System Operation
21
Temperatures Menu
24
Heater Status Menu
27
Economy Mode Setup Menu
28
Economy Mode Settings
29
Time Clock Settings
30
Daily Operating Mode Settings
32
Alarm Output Setup Menu
34
Display Settings Menu
35
Heater Information Menu
35
Current Fault / Alert Menu
36
Fault History Menu
36
Fault Occurrence Menu
37
Restore Factory Defaults Menu
37
Maintenance
38
Anode Rod Maintenance
38
Temperature-Pressure Relief Valve Test
39
Draining and Flushing
39
Sediment Removal
39
Lime Scale Removal
39
Troubleshooting
41
Not Enough or no Hot Water
41
Water Is too Hot
41
Water Heater Makes Strange Sounds
41
If You Cannot Identify or Correct the Source of Malfunction
41
Checking for Leaks
42
Diagrams
43
Wiring Diagrams
43
Piping Diagrams
49
4
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Lochinvar LHC 119 Specifications
General
Category
Water Heater
BTU Input
119, 000 BTU/hr
Efficiency
95%
Fuel Type
Natural Gas
Venting
Direct Vent
Input
119, 000 BTU/hr
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