Check to make sure that the gas listed on the rating plate is same as gas listed on the pressure regulator. See PRESSURE REGULATION section of this manual for information regarding gas pressure settings.

Note: Before attaching the gas supply line, be sure that all gas pipe is clean on the inside. To trap any dirt or foreign material in the gas supply line, a dirt leg must be incorporated in the piping. The drip leg must be readily accessible and not subject to freezing

conditions. Install in accordance with recommendations of serving gas supplier.

Joint compounds (pipe dope) shall be applied sparingly and only to the male threads of pipe joints. Do not apply compound to the first two threads. The joint compound used must be resistant to the action of liquified petroleum gases.

Before placing water heater in operation check for gas leakage.

Soap and water solution, or other material acceptable for this purpose, shall be used in locating gas leaks. Matches, candles, lighters, or other ignition sources shall not be used for this purpose.

PROPANE SUPPLY

Figure 4

Where used with propane (LP gas) a separate correct propane regulator must be installed at propane tank to deliver propane to BOSCH regulator at 11’’ W.C. pressure.

PRESSURE TAP

PRESSURE REGULATOR

MANUAL GAS VALVE

Figure 3

WARNING

The heater and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess 3,45 KPa (½ psig).

The water heater must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 3,45 KPa (½ psig).

The water heater, including the pressure regulator and manual valve provided with it, must not be operated at gas supply pressures in excess of 3,45 KPa (½ psig).If overpressure has occurred such as through improper testing of the gas lines or emergency malfunction of the supply system, the gas valve and regulator must be checked for safe operation. Make sure that the outside vent valves are protected against blockage. These are part of the gas supply system, not the water heater. Vent blockage may occur during ice storms.

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Bosch Appliances W125K, W 125...T1 manual Propane Supply

W 125...T1, W125K specifications

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