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Laarsen Associates
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Household Appliance
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Water Heater
Laarsen Associates
IW, PW, VW warranty
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Contents
Main
Mighty Therm
TABLE OF CONTENTS
SECTION 1. General Information
1A. Introduction
1B. Heater Identification
1C. Flow Requirements
1D. Water Chemistry
SECTION 2. Installation
2A. Heater Placement
2B. Installation of Indoor Heaters
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2C. Installation of Outdoor Heaters
2D. Gas Supply and Piping
2E. Electrical Wiring
2F. Water Piping of System
2G. Water Expansion
2H. Pump Performance and Installation
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Page
Figure 16. Two-Temperature Hot Water Supply System (Model VW or PW).
With Vertical Tank
With Horizontal Tank
Page
2I. Water Pressure
2J. Tank Installation
2K. Two-Temperature System
SECTION 3. Operation
3A. Controls - General
3B. Initial Start-Up
3C. To Start Up System:
3D. To Turn Off Heater:
3E. To Shut Down System:
SECTION 4. Maintenance
Indoor Models:
Outdoor Models:
SECTION 5. Troubleshooting and Analysis of Service Problems
IV. PRESSURE RELIEF VALVES LEAKING INTERMITTENTLY OR STEADILY.
V. SOOT IN FLUEWAYS OR IN TUBES, OR NOXIOUS FUMES INDICATIVE OF BAD COMBUSTION.
III. WATER DRIPPING IN FIREBOX.
SECTION 6. Parts Descriptions and Order Numbers
Figure 22. Parts Identification.
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SECTION 7. Outdoor Parts Descriptions and Order Numbers
Page
Pump Rotating Sections and Repair Parts
SECTION 8. Optional Parts Descriptions and Order Numbers
Energy Management Monitor (EM