GAS CONNECTIONS and Gas Regulator

GAS LINE SIZING

NOTE: The Aquastar 125 HX is supplied with a gas pressure regulator that must be installed on the heater before attaching the gas supply line. See figure 4. Failure to install the gas regulator as shown in figure 4 will be a violation of CSA certification of the unit. The regulator supplied with the heater is preset for the gas shown on the rating plate to the correct pressure. It is an appliance level regulator designed for (low inlet) pressure (less than 1/2 Psig or 15” W.C.) DO NOT connect to an unregulated or high pressure propane line or to a high pressure commercial natural gas line.

GAS INLET PIPE

PRESSURE TAP

PLASTIC VENT CAP

PRESSURE REGULATOR (with directional arrow on reverse side pointing upward)

Fig. 4 - Installation of Gas Pressure Regulator

The pressure regulator provided with the heater is adjusted to deliver the proper gas pressure (as indicated on the rating plate and in the manual for altitude up to 2000 feet (660 meters) above sea level. On appliances being installed above 2000 ft (660 meters) elevation, the inlet gas pressure should be set at installation to the value shown below.

NOTE: The gas pressures specified below refer to pressures taken at the pressure tap on the gas inlet pipe just above the regulator (See Fig 4). These readings should be taken while the heater is operating at full input — i.e. maximum water flow with the temperature dial selector turned all the way clockwise.

MAXIMUM INLET GAS FLOW PRESSURE SETTING

Altitude

Natural Gas

Liquid Propane

 

inches W.C:

inches W.C:

0' - 2.000 ft

5.7"

10.5"

2.000 ft - 4.500 ft

4.6"

8.4"

Above 4.500 ft consult your local gas provider.

-It is strongly recommended that the Natural Gas pipe be Black Iron pipe the entire distance from the outside meter to the inlet of the Aquastar regulator. 1/2” Black Iron pipe up to 10 feet, 3/4” Black Iron pipe up to 40 feet and 1” Black Iron pipe up to 150 feet distances. Flex line tubing is NOT recommended, but if used then oversize it.

-It is strongly recommended that the LP Gas pipe be semi-rigid copper or Black Iron pipe from the outside regulator to the inlet of the Aquastar regulator. For semi-rigid copper piping: 5/8” up to 20 feet and 3/4” up to 60 feet distances. For Black Iron piping: 1/2” up to 45 feet and 3/4” up to 160 feet distances. Flex line tubing is NOT recommended, but if used then oversize it.

THESE FIGURES ARE FOR AQUASTAR SUPPLY ONLY, ALL OTHER APPLIANCES IN THE BUILDING WILL NEED TO BE INCLUDED IN THE PIPE SIZING.

National Fuel Gas Code requires that a sediment trap (drip leg) be installed on gas appliances not so equipped. The drip leg must be accessible and not subject to freezing conditions. Install in accordance with the recommendations of the serving gas supplier.

WARNING: The heater must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 0.5 psig.

The water heater must be isolated from the gas supply piping system by closing the manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or more than 0.5 psig.

The water heater, including the pressure regulator provided with it, must not be operated at gas supply pressures in excess of 0.5 psig. If overpressure has occurred, such as through improper testing of the gas lines or malfunction of the supply system, the gas valve and regulator must be checked for safe operation. Make sure that the regulator vent is protected against blockage.

When your connections are made, check for gas leaks at all joints (not just the ones you made). Apply some soapy water to all gas fittings and gas valve. Soap bubbles are a sign of a leak.

NOTE: Do not apply soap solution to the pilot or pilot orifice area. If you have a leak, shut off the gas. After verifying that required gaskets are in place, tighten appropriate fittings to stop leak. Turn the gas on and check again with a soapy solution. Never test for gas leaks using a match or flame.

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Bosch Appliances 125HX NG GAS Line Sizing, Maximum Inlet GAS Flow Pressure Setting, Altitude Natural Gas Liquid Propane
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125HX NG specifications

Bosch Appliances has long been synonymous with innovation and quality, and their 125HX NG model is no exception. Designed for home cooks and culinary enthusiasts alike, the Bosch 125HX NG is a natural gas cooktop that combines state-of-the-art features with unmatched performance.

One of the standout features of the Bosch 125HX NG is its five powerful burners, which offer flexibility for various cooking techniques. These burners include a high-heat burner perfect for searing meats and achieving high-temperature cooking, along with a simmer burner designed for those delicate sauces and slow cooking tasks. The configuration of the burners allows for multiple pots and pans to be used simultaneously, maximizing efficiency and convenience in the kitchen.

The surface of the cooktop is constructed from premium stainless steel, offering not only a sleek aesthetic but also durability that withstands the rigors of daily cooking. The seamless design facilitates easy cleaning, ensuring that spills and stains can be wiped away with minimal effort.

Technology plays a key role in the Bosch 125HX NG model, featuring precise temperature control and rapid ignition systems. The automatic re-ignition feature enhances safety, ensuring that the flame is reignited if it goes out unexpectedly, providing peace of mind to users while cooking.

Another notable characteristic is the cooktop’s continuous grates, which provide stability for pots and pans, allowing for effortless sliding between burners without the risk of spills. These heavy-duty grates contribute to the overall robustness of the cooktop, reinforcing Bosch’s commitment to functional design.

In terms of installation, the Bosch 125HX NG is compatible with various kitchen layouts, making it a versatile choice for both new builds and remodels. The model is also designed with energy efficiency in mind, helping homeowners to save on gas consumption while enjoying consistent cooking results.

Overall, the Bosch Appliances 125HX NG is a sophisticated and reliable natural gas cooktop that caters to the needs of modern cooking. With its array of features, advanced technologies, and high-quality materials, it's a perfect addition to any kitchen, appealing to both amateur cooks and seasoned chefs. Investing in a Bosch 125HX NG means enjoying durability, functionality, and style in one exceptional cooking appliance.
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