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Installation and Operation Instructions
Installation and
Operation Instructions for
Mighty Venter
Power Vent System
Models MV2, MV3, MV4, and MV5
for Mighty Therm Sizes 500-1825
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water heater installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty.
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency, or gas
supplier.
WARNING
WHAT TO DO IF YOU SMELL GAS
Document 7008B
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Summary of Contents for Laars MV2
- Page 1 Operation Instructions for Mighty Venter Power Vent System Models MV2, MV3, MV4, and MV5 for Mighty Therm Sizes 500-1825 FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water heater installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
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Page 2: Table Of Contents
LAARS Heating Systems Page 2 TABLE OF CONTENTS SECTION 1. SECTION 3. General Information Installation Sizing ............3 Inspection and Unpacking ......4 Installer Cautions .......... 3 Power Venter Mounting ........ 7 Fan Proving Switch Installation ....8 SECTION 2. -
Page 3: General Information
To be used for single boiler/heater installation only. To calculate the equivalent vent pipe length, add the straight pipe plus 10 feet for every 90° elbow and 5 feet for every 45° elbow. Vent pipe reducers will be supplied by Laars. Vent pipe is field supplied. In order to use 100' equivalent length of vent pipe with the size 1670 consult factory. -
Page 4: 11. Side Wall Vent Hood Location
(3m). Vent hood shall not terminate less than “Side Wall Vent Hood Location”) 6 feet (1.8m) from a combustion air inlet of 12. Laars’ vent pipe reducers to be installed as another appliance. shown in Figure 1. Vent Hood shall not terminate directly above a 13. - Page 5 Installation Manual (specific to the Vent Hood). If 20069303 20032700 D2000402 20070902 20069304 20032800 D2000402 20070903 any items are missing from the package, contact Laars. Be 1010 20069305 20032800 D2000402 20070904 prepared with your purchase order number and the order 1200 20069306...
- Page 6 LAARS Heating Systems Page 6 (Supports: Note 8) Vent pipe is customer supplied Equivalent Pipe Length Calculate as per Notes 2 and 3 below. Minimum equivalent vent pipe length is 11' (3.4m) (Slope: Note 9) Reducer dimensions For all sizes 18"...
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Page 7: 3B. Power Venter Mounting
Mighty Venter Power Vent Systems Page 7 Mighty Venter housing is single wall, 6 inches 3b. Power Venter Mounting (152mm) must be maintained from all combustible The installer must supply plumber's strap or 1/4 materials. It is recommended that the Power Venter threaded rod with nuts and washers for mounting (see be mounted as close as possible to the point Figure 3 for MV3, see Figure 4 for MV4 and MV5). -
Page 8: 3C. Fan Proving Switch Installation
LAARS Heating Systems Page 8 3c. Fan Proving Switch Installation 3d. Wiring NOTE: If installing the MV2, the fan proving WARNING switch is factory installed. This section does not apply. All wiring from the Mighty Venter to the appliance must be in compliance with local codes or in their... - Page 9 HOT 120V NEUTRAL Mighty Venter NOTE: The black (BK) and white (W) leads from the Mighty Venter to the junction box do not require field wiring on Model MV2. Color Legend - Black - White - Red - Yellow - Blue...
- Page 10 LAARS Heating Systems Page 10...
- Page 11 Mighty Venter Power Vent Systems Page 11...
- Page 12 Laars warrants the components of this product either for one year from date of installation or 18 months from date of purchase, whichever comes first. This warranty covers defects in material and workmanship. Products that are tampered with, damaged, or defective due to malfunctioning appliances are not covered under this warranty.