State MHEW2-40R-035D User Manual

Residential Electric

Water Heater

Installation Instructions and Use & Care Guide

To obtain technical, warranty or service assistance during or after the installation of this water heater, call toll free 1-800-999-9515.

When calling for assistance, please have the following information ready:

1. Model number

2. 7 Digit product number

3. Serial number

4. Date of installation

5. Place of Purchase

Table of Contents Page

Water Heater Safety ............................................................................... 2

Installing Your Water Heater .................................................................3-8

Unpacking Instructions ............................................................... 3

Location Requirements ............................................................... 4

Electrical Requirements .............................................................. 5

Water System Piping ................................................................... 6

Installation Checklist ................................................................... 8

Operating Your Water Heater ............................................................. 9-11

Water Temperature Regulation ................................................... 9

Adjusting the Thermostat/High Limit Control ............................ 10

Operational Conditions ............................................................. 11

Maintenance of Your Water Heater ..................................................12-13

Troubleshooting Chart ........................................................................... 13

Repair Parts Illustration .................................................................... 14-15

Thermostat Wiring Chart and Diagram .................................................. 16

321249-000

April 2011

WATER HEATER SAFETY

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others. All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.” These words mean:

Indicates an imminently hazardous situation which, if not avoided, will result in death or injury.

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed.

Important Safety Instructions

CAUTION: Hydrogen gas is produced in a hot water system served by this heater that has not been used for a long period of time (2 weeks or more). Hydrogen gas is extremely ﬂ ammable. To reduce the risk of injury under these conditions, 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. When hydrogen is present, there will probably be an unusual sound such as air escaping through the pipe as the water begins to ﬂ ow. There should be no smoking or open ﬂ ame near the faucet at the time it is open.

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of potential exposure to such substances.

WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

This appliance can cause low-level exposure to some of the substances included in the Act.

INSTALLING YOUR WATER HEATER

Consumer Information

This water heater should be installed in accordance with the local code authority having jurisdiction, the power company or electric utility, and this installation manual. In the absence of local code requirements, follow the regulations set forth in the current edition of The National Electric Code, NFPA 70. This is available from the following:

National Fire Protection Association 1 Batterymarch Park Quincy, MA 02269

American National Standards Institute 1430 Broadway New York, NY 10018

Check your phone listings for the local authorities having jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with the installation, operation and maintenance of your electric water heater and to provide important safety information in these areas.

We urge you to read all of the instructions thoroughly before attempting the installation or operation of this water heater. This manual should be kept for future reference.

The manufacturer of this water heater will not be liable for any damages caused by failure to comply with the installation and operating instructions outlined in this manual.

If you lack the necessary skills required to properly install this water heater or you have difﬁ culty following the directions, you should not proceed but have a qualiﬁ ed person perform the installation of this water heater.

Examples of a qualified person include: licensed plumbers, authorized gas company personnel, and authorized service personnel.

Massachusetts code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00.

A data plate identifying your water heater can be found adjacent to the element door. When referring to your water heater always have the information listed on the data plate readily available.

Retain your original receipt as proof of purchase.

Unpacking the Water Heater

WARNING

Excessive Weight Hazard

Use two or more people to move and install water heater.

Failure to do so can result in back or other injury.

Removing Packaging Materials

IMPORTANT: Do not remove any permanent instructions, labels, or the data label from either the outside of the water heater or on the inside of water heater panels.

• Remove exterior packaging and place installation components aside.

• Inspect all parts for damage prior to installation and start-up.

• Completely read all instructions before attempting to assemble and install this product.

• After installation, dispose of/recycle all packaging materials.

Location Requirements

Site location

Select a location near the center of the water piping system. It must be installed indoors and in a vertical position on a level surface.

The water heater should be located in an area not subject to freezing temperatures. Water heaters located in unconditioned spaces (i.e., attics, basements, etc.) May require the water piping and drain piping to be insulated to protect against freezing. The drain and controls must be easily accessible for operation and service.

NOTE: The water heater shall be located so it is not subject to physical damage by moving vehicles or area ﬂ ooding.

Figure 1 Residential Garage Installation

Vehicle Stop

Keep combustibles such as boxes, magazines, clothes, etc., away from the water heater area.

This water heater does not have sufﬁ cient capacity for use with a spa or hot tub.

NOTE: Local codes and requirements in your area may require the installation of your water heater be accomplished in a way that the bottom element is elevated from the ﬂ oor at least 18 inches.

IMPORTANT: The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. Due to the normal corrosive action of the water, the tank will eventually leak after an extended period of time. Also any external plumbing leak, including those from improper installation, may cause early failure of the tank due to corrosion if not repaired. If the owner/operator is uncomfortable with making the repair a qualified person should be contacted. A suitable drain pan should be installed under the water heater as shown below, to help protect the property from damage which may occur from leaks in the piping connections or tank. The pan must limit the water level to a maximum depth of 2-1/2 inches and be two inches wider than the heater and piped to an adequate drain. Locate the water heater near a suitable indoor drain. Outside drains are subject to freezing temperatures which can obstruct the drain line. The piping should be at least 3/4” ID and pitched for proper drainage. Under no circumstance will the manufacturer or seller of this water heater be held liable for any water damage which is caused by your failure to follow these instructions.

Drain Pan

Drain

State of California

NOTE: The water heater must be braced, anchored, or strapped to avoid moving during an earthquake. Contact local utilities for code requirements in your area or call 1-800-999-9515 and request instructions.

2 1/2” Maximum

Pipe to

adequate

drain

At least 2” greater than the diameter of the water heater

Electrical Requirements

WARNING

Electric Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

WARNING

Fire Hazard

Figure 2 Heating Element

NOTE: Applying electrical power to elements that are not submerged in water will destroy them. The manufacturer will not warranty any elements damaged in this manner.

Figure 3 120/240V 2-Wire Models

Junction Box

Cover

Green

Ground

Screw

Ground

Wire

Conduit

Use proper size solid copper wire.

Use a UL listed or CSA approved strain relief.

Connect ground wire to green ground screw.

Failure to do so can result in death, fire, or electrical shock.

If you lack the necessary skills required to properly install the electrical wiring to this water heater, do not proceed but have a qualiﬁ ed electrician perform the installation.

When making the electrical connections, always make sure:

• The electrical supply has the proper overload fuse or breaker protection.

• Wire sizes and connections comply with all applicable codes.

• Wiring enclosed in approved conduit (if required by local codes).

• The water heater and electrical supply are properly grounded.

Figures 3, 4, and 5 are provided as reference drawings for the 120/240v 2-wire models only. Always reference the wiring diagram located on the water heater for the correct electrical connections and connect the electrical supply to the water heater in accordance with local utility requirements and codes.

When installing the electrical wiring to the water heater:

1. Be sure tank is completely filled with water before making any electrical connections. (See Figure 2)

2. Disconnect the electric power.

3. Loosen the screw holding the junction box cover to the top of the water heater and set aside.

4. Connect the electrical supply to the water heater. A standard 1/2 inch opening has been made in the junction box for conduit connections.

5. Connect ground wire to green ground screw in the junction box of the water heater. Reinstall the junction box cover.

Figure 4 Wiring Diagram 120V Models Only

Figure 5 Wiring Diagram

208/240v Models Only

White Wire (120V Models) Red Wire (240V Models)

Approved Connectors

Black

White

Ground Screw

Approved Connectors

Black

Red

Ground Screw

Overload Protection

Electrical

Service Ground

Overload Protection

Electrical Service ground

Black Wire

Circuit Breaker

Hot

To 120V Power Supply

Neutral

Circuit Breaker

To 208/240v

Power supply

1 Phase

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