American Dryer Corp GWH 425 EF manual GAS Connections, GAS Line Sizing

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GAS CONNECTIONS

NOTE: The 425 EF is supplied with a gas pressure regulator that must be installed on the heater before attaching the gas supply line. See figure 6. Failure to install the gas regulator as shown in figure 6 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 CAP

APPLIANCE PRESSURE REGULATOR

(with directional arrow on reverse side pointing upward)

Fig. 6 - Appliance pressure regulator

(with directional arrow on reverse side pointing up)

GAS LINE SIZING

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 6). 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 SETTINGS

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.

GAS LINE SIZING

-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 425 EF 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 125 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 425 EF regulator. For semi- rigid copper piping: 5/8” up to 20 feet and 3/4” up to 50 feet distances. For Black Iron piping: 1/2 “ up to 30 feet and 3/4” up to 150 feet distances. Flex line tubing is NOT recommended, but if used then oversize it.

THESE FIGURES ARE FOR 425 EF 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 .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 greater than .5 psig.

The water heater, including the pressure regulator provided with it, must not be operated at gas supply pressures in excess of .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.

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 pilot filter screen 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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Contents GWH 425 EF What to do if YOU Smell GAS For Your SafetyTable of Contents Unpacking the 425 EF Heater FeaturesTOP a Front B Back Sides Floor C Vent Diameter Front View Side ViewGeneral Rules to Follow For Safe Operation Proper Location for Installing Your HeaterClearances Combustion AIR RequirementsIncandescent Particle Tray Illustration Mounting InstallationInch VentingHorizontal Side Wall Soffit GAS Line Sizing GAS ConnectionsFor LP GAS GAS PIPING, ConnectionsGAS Line Sizing For Natural GAS Water Connections Water valve and water connectors, top viewElectrical Connections Flue gas safety deviceLighting and Operating Instructions For Your Safety Read Before Operating Your HOT Water HeaterTemperature Adjustment Knob No Spark AT the Pilot Microswitch adjustmentPilot Sparks Continuously with no Water Running FAN Circulates When HOT Water is Shut OFF 720 607 Diagram of 425 EF Interior Components Diagram and Parts List Interior Components Diagram Parts List 425 EF Flow chart of 425 EF Fifteen Year Limited Warranty Controlled Energy Corp Maintenance Table see

GWH 425 EF specifications

American Dryer Corp GWH 425 EF is a highly efficient, energy-saving dryer designed specifically for commercial laundry applications. With its robust construction and innovative technologies, the GWH 425 EF delivers exceptional performance while maximizing operational efficiency.

One of the main features of the GWH 425 EF is its optimized drying capacity. With a 45-pound load capacity, this dryer efficiently processes large volumes of laundry, making it an ideal choice for laundromats, hotels, and other commercial establishments. The dryer is designed to handle varied fabric types, providing versatile solutions for all drying needs.

The GWH 425 EF incorporates advanced heating technologies that enhance drying speed and efficiency. Its energy-efficient gas heating system not only reduces operation costs but also minimizes environmental impact. The dryer offers a range of adjustable temperature settings, enabling operators to customize drying cycles for different fabric types and load sizes. This flexibility enhances fabric care and improves overall drying performance.

Another standout characteristic of the GWH 425 EF is its user-friendly control panel. Equipped with a digital display, the control panel allows for easy programming and monitoring of drying cycles. Operators can select from multiple drying options, and the machine's intuitive interface makes it simple to adjust settings quickly. This convenience translates to improved workflow and increased productivity in busy commercial environments.

Safety is a top priority for American Dryer Corp, and the GWH 425 EF is equipped with multiple safety features. These include a built-in lint screen that traps lint and debris, reducing the risk of fires. Additionally, the dryer is engineered with a robust structural design, ensuring durability and longevity even under constant use.

The GWH 425 EF is also designed with maintenance in mind. It features easy access to internal components for routine servicing, allowing operators to keep the dryer in peak operating condition with minimal effort. This eases maintenance burdens and prolongs the lifespan of the machine.

Finally, the GWH 425 EF is backed by American Dryer Corp's commitment to quality and customer satisfaction. With a reputation for producing reliable and efficient laundry equipment, American Dryer Corp ensures that the GWH 425 EF meets the demanding needs of commercial laundry services. Overall, the American Dryer Corp GWH 425 EF is an excellent investment for businesses looking to optimize their laundry operations while maintaining quality and efficiency.