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Lochinvar
Water Heater
100 Series
Lochinvar 100 Series Installation & Service Manual
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Revision Notes:
Revision A (Process #3000002314_Change
#500002513) initial release.
Revision B (PCP# 3000003781 / CN# 500004056) reflects the addition
of the Modbus chapter on pages 21 through 24.
Revision C (PCP #3000035575 / CN #500024078) reflects updates
made to the manual and the addition of the Series break.
MM #100271422_DIR #2000527669_Rev C
10/19
43
Table of Contents
Hazard Definitions
2
Table of Contents
2
General Information
3
Please Read before Proceeding
3
The IPW - How It Works
4
1 Determine Ipw Location
5
Before Locating the Appliance, Check
5
Site Selection and Preparation
5
Installation Clearances
5
IPW Water Heater Clearances
6
Determine Water Heater Location
6
2 Prepare Water Heater
7
Receiving and Unpacking the IPW
7
Setting the Unit
7
3 Hydronic Piping
8
IPW Piping Assemblies
8
General Piping Information
8
Heating Fluid and Domestic Hot Water (DHW) Piping
8
Scalding
8
Hydronic Piping Illustrations
9
4 Adjustments
15
3-Way Control Valve Adjustment
15
Control Valve Calibration and Status Indications
15
Manual Control of 3-Way Valve
16
Temperature Controller Operating Controls
18
5 Operating Information
19
Sequence of Operation
19
Electronic Control Overview
19
Over-Temperature Control and Safety Features
19
6 Wiring
20
Electrical Wiring Connections
20
WIRING Electrical Wiring Connections
20
7 Modbus
21
Installation Procedure
21
MODBUS Installation Procedure
21
Modbus Eexception Codes
22
Primary Data Tables
23
Memory Map
23
Physical Wiring
23
Procedure to Change Modbus Address
24
Troubleshooting
24
8 START-UP Introduction
25
Pre-Operational Checks and Procedures
25
Initial Start-Up
25
Checking Mixed Inlet Temperature
26
Shutting down the System
26
9 MAINTENANCE Maintenance and Annual Startup
27
Periodic Cleaning of Heat Exchanger
28
Strainers - Inspection and Replacement
28
Oiled Bearing Circulators
28
Check Water Heater Relief Valve
28
10 Troubleshooting
29
Checking Temperature Sensors
30
11 Sizing Data
31
How to Properly Size Your Indirect Water Heater
31
12 Diagrams
39
Wiring Diagram
39
13 Replacement Parts List
40
When Ordering Replacement Parts
40
Revision Notes
44
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User's Information Manual
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Lochinvar 100 Series Specifications
General
Brand
Lochinvar
Model
100 Series
Category
Water Heater
Language
English
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