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Water Heater
Laarsen Associates
IW, PW, VW warranty Mighty Therm Volume Water Heater, Page, Tile Assemblies
Models:
VW
IW
PW
1
25
32
32
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Troubleshooting
Install
Pump Rotating Sections and Repair Parts
Split System Piping Diagram, Model IW
2A. Heater Placement
Maintenance
2E. Electrical Wiring
2K. Two-TemperatureSystem
volume of all the gas fired appliances
Page 25
Image 25
Mighty Therm Volume Water Heater
Page 25
Figure 23. Tile Assemblies.
Page 24
Page 26
Page 25
Image 25
Page 24
Page 26
Contents
Volume Water Heaters Models VW, PW and IW Sizes
Installation and Operation Instructions for
Mighty Therm
TABLE OF CONTENTS
1A. Introduction
SECTION General Information
1B. Heater Identification
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
2F. Water Piping of System
2E. Electrical Wiring
Natural Gas
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
With Vertical Tank
With Horizontal Tank
LAARS HEATING SYSTEMS
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
2K. Two-TemperatureSystem
2I. Water Pressure
3B. Initial Start-Up
Hi-LimitCheckout
3C. To Start Up System
1. Start Up Boiler
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
Figure 22. Parts Identification
Temperature Control Wells Inlet/Outlet Header
1. Firing Mode L, K, & C 2 Dry Wells
2. Firing Mode H
Model
Description
Model
Model
Page
Mighty Therm Volume Water Heater
Figure 23. Tile Assemblies
Model
Description
Model
Model
Model
Description
Model
Model
Model
Description
Model
Model
Page
Mighty Therm Volume Water Heater
Figure 21. Outdoor Parts
Model
Description
Model
Model
Model
Description
Model
Model
Energy Management Monitor EM2
Pump Rotating Sections and Repair Parts
STANDARD COMPONENTS
Description
