Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre Thermostat Adjustment

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TEMPERATURE CONTROL

THERMOSTAT ADJUSTMENT

The water heater is supplied with the thermostat preset at 70ºC. It will be necessary to adjust the thermostat temperature setting if another temperature is required.

When adjusting the thermostat temperature it is necessary to alter the thermostat offset. The table outlines the thermostat temperature and the corresponding offset. Failure to adjust the offset will result in incorrect water temperature.

To adjust the thermostat setting and offset:

Temperature

Offset

60

14

65

15

70

16

75

17

80

18

82 *

18

* Recirculation required for 82°C setting

1.Press the down button (▼) for five (5) seconds. The current set point value will be displayed.

2.Press the down button (▼) to decrease the set point or the up button (▲) to increase the set point.

3.Once the required temperature is selected press and hold the down button (▼) and the up button (▲) simultaneously. The display will revert to the current temperature in the water heater.

4.Press and hold the down button (▼) and the up button (▲) simultaneously for ten (10) seconds, “C0” (offset program) will be displayed. Release the buttons.

5.Press and hold the down button (▼) and the up button (▲) simultaneously again. The current setting for “C0” will be displayed. Release the buttons.

6.Press the down button (▼) to decrease the setting or the up button (▲) to increase the setting according to the table, i.e. if the temperature set in step three is 60 then the offset value will be 14.

7.Once the required offset is selected press and hold the down button (▼) and the up button (▲) simultaneously, “C0” will be displayed.

8.Press the down button (▼) once; “EP” (exit program) will be displayed.

9.Press and hold the down button (▼) and the up button (▲) simultaneously; the current temperature in the water heater will now be displayed and programming complete.

Note: During the programming process if a button is not pressed for 25 seconds the thermostat will revert to its previous temperature display. It will be necessary to start again from step 1.

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Contents Owners Guide Installation Instructions Patents Contents Temperature Adjustment About Your Water HeaterModel Type 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? HOW Your Water Heater Works Mains PressureElectronic Thermostat 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.

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