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Laarsen Associates
VW, PW, IW warranty Mighty Therm Volume Water Heater, Page, Outdoor Parts
Models:
VW
IW
PW
1
29
32
32
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Install
Maintenance
2E. Electrical Wiring
Service Problems
Page 29
Image 29
Mighty Therm Volume Water Heater
Page 29
Figure 21. Outdoor Parts.
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Page 30
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Image 29
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Page 30
Contents
Mighty Therm
Installation and Operation Instructions for
Volume Water Heaters Models VW, PW and IW Sizes
TABLE OF CONTENTS
1B. Heater Identification
SECTION General Information
1A. Introduction
2A. Heater Placement
SECTION Installation
2B. Installation of Indoor Heaters
1C. Flow Requirements
Figure . Alcove Installation
Figure 5. Installation on Concrete Blocks or Tile
CLOSET INSTALLATION
ROOM INSTALLATION
2B-2.Venting
2B-1.Combustion Air Supply
Heater
Each Opening
Figure 7. Incorrect Outdoor Installation
2C. Installation of Outdoor Heaters
2D. Gas Supply and Piping
Table 3. Gas Piping Sizes
Natural Gas
2E. Electrical Wiring
2F. Water Piping of System
2G. Water Expansion
Model
2H. Pump Performance and Installation
Pipe Size
Model
Figure 11. Hot Water Supply System Model VW & PW
With Vertical Tank With Horizontal Tank
LAARS HEATING SYSTEMS
Figure 13. Split System Piping Diagram, Model IW
1.All water connections 2 N.P.T. models
LAARS HEATING SYSTEMS
With Horizontal Tank
With Vertical Tank
D - Tempering Valve
B - Check Valve C - Check Valve
H - Throttling Valves in Building Loop Returns
J - Circulating Pump for Return Loop
2J. Tank Installation
SECTION Operation
2I. Water Pressure
2K. Two-TemperatureSystem
3B. Initial Start-Up
1. Start Up Boiler
3C. To Start Up System
Hi-LimitCheckout
3D. To Turn Off Heater
SECTION Maintenance
3E. To Shut Down System
Indoor Models
Service Problems
SECTION Troubleshooting and Analysis of
III. WATER DRIPPING IN FIREBOX
Order
Numbers
LAARS HEATING SYSTEMS
Key Description No
Temperature Control Wells Inlet/Outlet Header
Figure 22. Parts Identification
1. Firing Mode L, K, & C 2 Dry Wells
2. Firing Mode H
Model
Description
Model
Model
Figure 23. Tile Assemblies
Mighty Therm Volume Water Heater
Page
Model
Description
Model
Model
Model
Description
Model
Model
Model
Description
Model
Model
Figure 21. Outdoor Parts
Mighty Therm Volume Water Heater
Page
Model
Description
Model
Model
Model
Description
Model
Model
Energy Management Monitor EM2
Pump Rotating Sections and Repair Parts
STANDARD COMPONENTS
Description
