Table of Contents
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Electric
Water Heaters
For Manufactured Housing (Mobile Home)
®
LISTED
786H
Printed in USA
Use & Care Manual
With Installation Instructions for the Installer
Single and Double
Element Models
Side or Top
Water Connections
Residential 20–52 Gallon
The purpose of this manual is twofold: one,
to provide the installer with the basic
directions and recommendations for the
proper installation and adjustment of the
water heater; and two, for the
owner–operator, to explain the features,
operation, safety precautions, maintenance
and troubleshooting of the water heater.
This manual also includes a parts list.
It is imperative that all persons who are
expected to install, operate or adjust this
water heater read the instructions carefully
so they may understand how to perform
these operations. If you do not understand
these instructions or any terms within it,
seek professional advice.
Any questions regarding the operation,
maintenance, service or warranty of this
water heater should be directed to the seller
from whom it was purchased. If additional
information is required, refer to the section
on "If you need service."
Do not destroy this manual. Please read
carefully and keep in a safe place for
future reference.
Recognize this symbol as an
!
indication of Important Safety
Information!
California Proposition 65 Warning:
!
This product contains chemicals known
to the State of California to cause
cancer,
birth
defects
reproductive harm.
AP10414-9 (11/03)
or
other
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Table of Contents
Related Manuals for Rheem 72V20-1
Summary of Contents for Rheem 72V20-1
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Page 1: Water Heaters
Any questions regarding the operation, maintenance, service or warranty of this water heater should be directed to the seller from whom it was purchased. If additional information is required, refer to the section on “If you need service.”... -
Page 2: Table Of Contents
Inside you will find many helpful hints on how to use and maintain your water heater properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your water heater. -
Page 3: Water Temperature Adjustment
Water temperatures above 125°F can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined on the label pictured below. This label is also located on the water heater near the thermostat access panel. -
Page 4: Safety Precautions
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater. It may save you time and cost. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious bodily injury or death. -
Page 5: Location
Catch Pan Kits are available from the store where the water heater was purchased, or any water heater distributor. Inspect Shipment Inspect the water heater for possible damage. Check the markings on the rating plate of the water heater to be certain the power supply corresponds to the water heater requirements. -
Page 6: Thermal Expansion
“thermal expansion”. In an “open water system”, expanding water which exceeds the capacity of the water heater flows back into the city main where the pressure is easily dissipated. A “closed water system”, however, prevents the expanding water from flowing back into the main supply line, and the result of “thermal expansion”... -
Page 7: Relief Valve
Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must be installed in the opening provided and marked for the purpose on the water heater. No valve of any type should be installed between the relief valve and the tank. Local codes shall govern the installation of relief valves. - Page 8 Installing the water heater. Typical Side Connect Installation Directed to under Typical Top Connect Installation Directed to under Anode Electrical junction box (use only copper conductors) Temperature & pressure relief valve Union Hot water outlet to fixtures Union To cold water supply Relief valve discharge line.
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Page 9: Electrical Connections
The voltage requirements and wattage load CAUTION: The presence of for the water heater are specified on the water in the piping and water rating plate on the front of the water heater. heater does not provide sufficient conduction for a ground. Non-metallic piping, dielectric unions, flexible connectors etc. -
Page 10: Insulation Blankets
(other than those authorized by the manufacturer) into, onto or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property. - Page 11 Relief Valve Insulation Installation CAUTION: Ensure the T&P Valve opening is not obstructed by the insulation. Typical top connection arrangement For increased energy efficiency, some water heaters have been supplied with a 2-3/8” section of pipe insulation. Please install the insulation, according to the illustrations above, that best meets your requirements.
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Page 12: Operating Instructions
Operating the water heater. CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. -
Page 13: Water Temperature Setting
Be sure to read and follow the warnings outlined in this manual and on the label on the water heater. This label is located on the water heater near the thermostat access panel. -
Page 14: Draining The Water Heater
CAUTION: Shut off power to the water DANGER: Before manually operating In order to drain the water heater, turn off the cold water supply. Open a hot water faucet or lift the handle on the relief valve to admit air to the tank. -
Page 15: Extended Shut-Down
Vacation and Extended Shut-Down NOTICE: Refer to the If the water heater is to remain idle for an Hydrogen Gas Caution in the extended period of time, the power and Operating Instructions. water to the appliance should be turned off to conserve energy and prevent a build-up of dangerous hydrogen gas. -
Page 16: Troubleshooting Tips
● This is normal for heat trap fittings when in operation and does not indicate a need for service. ● Wait for the water heater to recover after an abnormal demand. ● Replace fuse or reset circuit breaker. ●... -
Page 17: Replacement Parts List
Drain valve Cold inlet nipple (on side connect models only) The model and serial number of the water heater from the rating plate. Specify voltage and wattage as marked on the rating plate. Relief valve Hot outlet heat trap or dip cup insert... - Page 18 Replace the thermostat and/or element as necessary. Replace the insulation and jacket access panel(s) before turning on the power to the water heater. NOTICE: The cavity insert crossbar is necessary for the manufacturing process only. The removal of the crossbar will not interfere with the operation of the water heater.
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Page 19: If You Need Service
Phone: 1-800-432-8373. When contacting the manufacturer, the following information will be requested: a. Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater. b. Address where the water heater is located and physical location. -
Page 20: Wiring Diagram
ELEMENT FIG. E FIG. F This water heater is factory equipped for two (2) wire connection to electrical power. For use with "off-peak" meter (timer) remove wire nut from red and black leads and connect to "off-peak" meter (timer). BRANCH CIRCUIT...