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* The wetted surface of this product contacted by consumable water contains less than one quarter of one percent (0.25%) of lead by weight.
WARNING: If the information in these
instructions is not followed exactly, a fire or
explosion may result causing property damage,
personal injury, or death.
- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
- WHAT TO DO IF YOU SMELL GAS
• 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 neighbor's
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 the gas supplier.
REVOLUTION WATER
HEATER
Installation
Manual
Model
VRP-150 VRP-199
VRS-150 VRS-199
Keep this manual near the water heater for future reference
whenever maintance or service is required.
- The installation must conform with local codes or, in
the absence of local codes, the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas
and Propane Installation Code.
- When applicable, the installation must conform with
the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240
MH Series, Mobile Homes.
* Lead Free

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Table of Contents
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Summarization of Contents

General Information
Included Items
Lists items included with the water heater.
Optional Accessories
Lists optional accessories for installation.
Installing the Water Heater
Installer Qualifications
Requirements for licensed professionals performing installation.
Location
Considerations for choosing an installation location for the water heater.
Clearances
Specifies required clearances around the water heater for installation and maintenance.
Mounting to the Wall
Steps and considerations for securely mounting the water heater to a wall.
Connecting the Gas Supply
Inlet Gas Pressure
Details on measuring and verifying the water heater's inlet gas pressure.
Connecting the Water Supply
Water Piping
Guidelines and examples for connecting water lines to the water heater.
Installing a Vent (For Indoor Installation Only)
Vent Type
Describes different types of venting systems for the water heater.
Vent Pipe Materials
Details the recommended materials for vent pipes according to regulations.
Vent Termination
Covers configurations for the exhaust and intake vent terminals.
Common Vent System Information (Optional)
Guideline for a Common Vent System
Provides essential guidelines for the safe installation of common vent systems.
Installing a Vent (For Common Vent Installation Only)
Install the Venting
Outlines the sequence for installing PVC/CPVC common venting.
Connecting Pipes with Cement
Details the process of connecting vent pipes using solvent cement.
Backflow Damper Assembly
Instructions for assembling the backflow damper onto VR water heater units.
Connecting and Terminating the Vent Pipe
Guides the connection and termination of vent pipes for the common vent system.
Maintenance
Backflow Damper Maintenance
Periodic checks of the backflow damper for optimal system performance.
Appendix
Gas Conversion
Instructions for converting the water heater from Natural Gas to Propane Gas.
Cascade System
Water Supply
Options for plumbing a cascading system of water heaters.
Piping Sizes
Recommends pipe diameters and flow rates for cascade systems.
Remote Controller - VD-100 (Optional)
Installation
Step-by-step guide for installing the remote controller.
Component Assembly Diagrams and Parts Lists
Case Parts (VRP & VRS)
Exploded view and parts list for the water heater casing.

Table of Contents