Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre GAS Inlet, Pipe Sizes

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CONNECTIONS – PLUMBING

GAS INLET

The gas connection is made to the left hand side of the gas control. The pipe work must be cleared of foreign matter before connection and purged before attempting to light the water heater. An isolation valve and disconnection union must be used to allow servicing and removal of the water heater. Refer to the Gas Installations Standard AS 5601 for the correct pipe sizing.

Warning: Always isolate the water heater before pressure testing the gas supply system. Disconnect the water heater after the isolating cock to prevent the risk of serious damage to the gas control. Warranty does not cover damage of any nature resulting from failure to observe this precaution. Refer to rating label for gas types and pressures.

Ensure the gas line is also purged at the union of the gas control. If this procedure is not followed, a retry lockout (i.e. single flashes on control module) may result on initial start up. The HSI system has a flame sensing period of

2.5seconds from the time the gas valve opens. If the burner flame is not sensed during this period, a five minute waiting period follows so any unburnt gas can escape before a second and third burner ignition is automatically attempted. If the third attempt is also unsuccessful, the system enters the re- ignition attempt lockout mode. The LED on the control module has a series of flashes to indicate this mode (refer to label on the access cover). The electrical supply to the water heater must be turned off and then on again, or the reset button on the control module must be pressed to allow further ignition attempts.

Caution: Care is necessary when tightening fittings into the gas valve. The gas valve casting may crack if the fittings are over tightened. Cracked valve castings are not covered under warranty. Damaged valves must be replaced.

PIPE SIZES

The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing the most suitable pipe size for each individual application. Reference to the technical specifications of the water heater and local regulatory authority requirements must be made.

RELIEF VALVE

The temperature pressure relief valve is shipped in the plastic bag attached to the side of the water heater. The temperature pressure relief valve must be fitted before the water heater is operated. Before fitting the relief valve, make sure the probe has not been bent. Seal the thread with Teflon tape - never hemp. Make sure the tape does not hang over the end of the thread.

Screw the valve into the correct opening (refer to the installation diagram on page 22) leaving the valve outlet pointing downwards. Do not use a wrench on the valve body - use the spanner flats provided.

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Contents Owners Guide Installation Instructions Patents Contents Model Type Temperature AdjustmentAbout Your Water Heater Hotter Water Increases the Risk of Scald InjurySafety To Turn OFF the Water Heater To Turn on the Water HeaterAnode Protection Does the Water Quality Affect the Water HEATER?HOW Long will the Water Heater LAST? Electronic Thermostat HOW Your Water Heater WorksMains Pressure HOT Surface IgnitionExpansion Control Valve Temperature Pressure Relief ValveRegular Care Servicing Save a Service Call Not Enough HOT Water or no HOT WaterBurner will not Light Diagnostic Features of Electronic ThermostatWater Heater not Operating Temperature Pressure Relief Valve Running Expansion Control Valve RunningWater Heater Appears to be Leaking High GAS BillsWater Heater Location InstallationThis Water Heater is not Suitable for Pool Heating Indoor Installation Safe TrayOutdoor Installation HOT Water Delivery Mains Water SupplyTank Water Supply Temperature Limiting Device Circulated HOT Water Flow and Return SystemReducing Heat Losses Anode TypesSaddling Pipe Work Typical Installation Outdoor Location Typical Installation Indoor Location Dimensions and Technical Data Model No 621265 631265 621275 631275Water Inlet and Outlet Connections PlumbingConnection Sizes Relief Valve GAS InletPipe Sizes Relief Valve Drain Thermostat Setting Connections ElectricalWiring a Power Flued System to the Water Heater Power Flue External Controls Intermittent Operation Power Flue External Controls 24 Hour Operation Multiple Installations Multiple Installations Typical Installation Rheem Heavy Duty GAS Water Heaters Installation Dimensions Rheem Heavy Duty GAS Water Heaters Line Manifold Back to Back ManifoldManifold Arrangement Commissioning To Fill and Turn on the Water HeaterGAS Inlet Pressure Lighting the Water Heater For Your Safety Read Before LightingLighting Procedure Test the Water Heater After Installation Flashes FaultBurner Pressure Adjustment AIR AdjustmentDraining the Water Heater Temperature Control Recirculation SystemThermostat Adjustment This page is intentionally blank Saturation Index Water SuppliesAnode Warranty Conditions Warranty ExclusionsWarranty Rheem will

Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre specifications

Rheem offers a comprehensive range of gas water heaters, with the 265-litre and 275-litre heavy-duty models standing out for their efficiency, durability, and advanced technology. These models are designed specifically for households and commercial applications that require a reliable supply of hot water, ensuring comfort and convenience.

The Rheem 265-litre model is built to cater to larger households, providing ample hot water to meet daily needs. It features a powerful gas burner that delivers quick heating, allowing users to enjoy hot water almost immediately. With an impressive first-hour rating, the 265-litre unit can effortlessly supply enough hot water for multiple simultaneous uses, such as showers, washing dishes, and laundry.

Similarly, the 275-litre model offers an even greater capacity, making it ideal for larger families or commercial settings. It boasts enhanced heating capabilities and a larger burner size, which significantly reduces recovery time and ensures a consistent supply of hot water throughout the day. This model is particularly beneficial for businesses in the hospitality industry, where demand for hot water is high.

Both models utilize Rheem's proprietary technologies to maximize efficiency. They feature premium insulation that minimizes heat loss, allowing the heaters to maintain optimal water temperatures while consuming less energy. The intuitive electronic gas control system ensures precise temperature management, promoting safety and comfort.

Durability is a hallmark of Rheem water heaters, with both the 265-litre and 275-litre models constructed from high-quality materials designed to withstand the rigors of daily use. The tanks are coated with advanced corrosion-resistant materials, extending their lifespan and reducing the likelihood of maintenance issues. Additionally, both models are equipped with anode rods that further protect against corrosion.

Installation and maintenance are further simplified with Rheem's user-friendly design. The compact build allows for flexibility in installation, whether indoors or outdoors, and the easy access to service points ensures that routine maintenance can be performed without hassle.

In summary, Rheem's Gas Heavy Duty Water Heater Models 265-litre and 275-litre combine advanced technology, durability, and efficiency to deliver exceptional performance. These models are perfect for those requiring a reliable and consistent supply of hot water, making them an excellent choice for both residential and commercial use.