Fuel Specifications

II)SAFETY Relief Valve Requirements

For protection against excessive pressure and/or tempera- tures, an ASME approved Temperature and Pressure (T&P) Relief Valve must be installed in the opening provided and labeled near the hot water outlet. Pressure rating of the valve must not exceed the working pressure shown on the rating plate of the water heater. The discharge capacity of the T&P valve must be equal to or greater than the input capacity of the water heater. The valve shall be self closing.

CAUTION

POSSIBLE CANCER HAZARD BY INHALATION. CAN CAUSE RESPIRATORY, SKIN AND EYE IRRITATION.

This product contains fiberglass wool and ceramic fiber materials. Airborne fibers from these materials have been listed by the State of California as a possible cause of can- cer through inhalation. Use special care when handling ceramic fiber (chamber lining and base insulation) materials. Ceramic fibers can be converted to chrystobalites, a sub- stance listed as a probable cause of cancer. Suppliers of fiberglass wool products recommend the following mea- sures be taken when handling these materials:

Precautionary measures:

•Avoid breathing fiberglass dust.

•Avoid contact with skin and eyes.

•Use a National Institute for Occupational Safety and Health (NIOSH) approved dust/mist respirator.

•Wear long-sleeved, loose fitting clothing, gloves and eye protection.

•Wash work clothes separately from other clothing. Rinse washer thoroughly.

Removing the burner may generate airborne fiber concen- tration requiring additional protection.

First aid measures:

•Eye contact - Flush eyes with sterile water to remove foreign objects. If irritation or other symptoms persist, seek medical attention.

•Skin contact - Wash affected areas gently with soap and warm water after handling.

All JOHN WOOD brand water heaters are designed to burn only fuels not heavier than No.2 (furnace) oil.

WARNING

·Do not use gasoline, crank case oil or an oil containing gasoline.

·Do not tamper with unit or controls.

·Do not leave paper or rags around the burner or heater.

·Do not experiment with the burner.

III)INSTALLATION Location

NOTICE: Before installing this water heater, consideration and planning must be given to the following details:

•Routing and support of the vent piping.

•How and where to obtain combustion and ventilation air supply; See “Air Requirements”.

•Access to oil supply, See “Oil Supply Connections”.

•Position of water supply, floor drain and placement of water piping for hot and cold water; See “Water Supply Connections”.

•Connection to the electrical service. See “Electrical Supply Connections”.

The water heater must be installed on a non-combustible floor, as close to the chimney as practical and close to the water piping. The unit should be installed in an area not sub- ject to freezing temperatures. It should be located so that all controls and drains are easily accessible (at least 610mm (24 in.) clearance in front of the water heater). Check the area around the installation location. Remove any com- bustible materials, gasoline and other flammable liquids. Failure to keep area clear and free of such materials and vapors can result in substantial property damage, severe bodily injury or death.

The heaters for which this manual has been written have been approved with the minimum clearances to com- bustibles as listed in Figure 1.

Unpacking and Inspection

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.

Move the water heater to the location of installation before removing the exterior packaging. Remove exterior packag- ing and place installation components aside. Inspect all parts for damage prior to installation and start-up. Completely read and understand all instructions before attempting to assemble and install this product. If you observe damage to the water heater or any of its compo- nents, DO NOT ASSEMBLE OR INSTALL IT OR MAKE ANY ATTEMPT TO FIX THE DAMAGED PART(S). Contact the place of purchase for further instructions.

Important: Do not remove any permanent instructions, labels, or the date label from the outside of the water heater or on the inside of panels. After installation, dispose of pack- aging material in the proper manner.

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JW527 JWF307V, JW727 JWF657, JWF307, JW327 JWF507, JW517 specifications

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