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2.4General rules to follow for safe operation

B1. You should follow these instructions when you install your heater. In the United States: The installation must conform with local codes or, in the absence of local codes, the National Fuel Gas Code ANSI Z223.1/NFPA 54.

In Canada: The Installation should conform with CGA B149.(1,2) INSTALLATION CODES and /or local installation codes.

B2. Carefully plan where you install the heater. Proper clearances must be followed.

B3. The appliance must be isolated from the gas supply piping system by closing its individual manual gas shutoff valve (not supplied with heater) during any pressure testing at pressures in excess of ½ Psig (3.5 kPa).

The appliance and its gas connection must be leak tested before placing the appliance in operation.

B4. Keep water heater area clear and free from combustibles and flammable liquids. Do not locate the heater over any material which might burn.

B5. Correct gas pressure is critical for the optimum operation of this heater. Gas piping must be sized to provide the required pressure at the maximum output of the heater, while all the other gas appliances are in operation. Check with your local gas supplier, and see the section on connecting the gas supply.

B6. Should overheating occur or the gas supply fail to shut off, turn off the gas supply at the manual gas shut off valve, on the gas line. Note: manual gas shutoff valve is not supplied with the heater.

B7. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been underwater.

2.5Proper location for installing your heater

Carefully select the location of the water heater. Follow the guidelines below:

B 1. Locate the heater where venting, gas and plumbing connections are feasible and convenient.

B2. The hot water lines should be kept short to save energy. Centrally locating the water heater is best. It is always best to have the water lines insulated to prevent the possibility of any freeze damage.

B3. The water in this heater is cold and always remains cold except for the times that hot water is being used. The heater is equipped with freeze prevention equipment that will operate and prevent freezing of the water in the heater to 5°F with no wind chill. Electrical power must be maintained to the heater to allow this to function.

WARNING: Proper insulation of the water lines below the heater is required if below freezing temperatures, below 32°F, are ever anticipated!

Danger: If the temperature drops below 5°F, freeze damage to the water heater itself must be prevented by turning off the power to the heater, then disconnecting the plumbing conne- ctions and introducing short bursts of compressed air (20-40 psi) through the heater's connections. This will remove the residual water in the horizontal pipes and water valve..

Danger: Keep children away as the top of the water heater vent cap will get very hot during operation. Install in a place that prevents the top of the heater being reached by small children.

Danger: Flue gases will be released through the vent cap. Flue gas is very hot and contains carbon monoxide. The heater cannot be installed indoors. To prevent risk of fire and poisoning by carbon monoxide, assure all clearances indicated in manual.

Danger: Surface temperature around vent cap is less than 140°F, except highest top surface of vent cap may reach 400°F.

Danger: Do not place or store any combustible material within 5 feet of the appliance. Risk of fire could be caused by hot flue gas. Note: Exception is made for the wall where the appliance is installed and any adjacent walls or overhang. In this case observe clearances required in chapter 2.6.

Warning: Flammable materials, gasoline, pressurized containers, or any other items or articles that are potential fire hazards must NOT be placed on or adjacent to the heater. The appliance area must be kept free of all combustible materials, gasoline and other flammable vapors and liquids.

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Bosch Appliances 250 SXO LP manual General rules to follow for safe operation, Proper location for installing your heater
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250 SXO LP, 250 SXO NG specifications

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