Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre Installation And Owner's Instructions
Gas heavy duty water heater 265 litre and 275 litre models
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Summary of Contents for Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre
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Page 1: Owners Guide
Owners Guide Installation Instructions Gas Heavy Duty Water Heater 265 Litre and 275 Litre Models This water heater must be installed and serviced by an authorised person. Please leave this guide with a responsible officer. - Page 2 DO NOT leave this guide inside of the cover of the water heater, as it may interfere with the safe operation of the water heater or ignite when the water heater is turned on.
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Page 3: Table Of Contents
CONTENTS RESPONSIBLE OFFICER - We recommend you read pages 4 - 14. The other pages are intended for the installer but may be of interest. How Your Water Heater Works...8 Regular Care ...9 Save A Service Call ...11 Installation...15 Connections – Plumbing ...25 Connections –... -
Page 4: About Your Water Heater
Plumbing Standard the temperature of the stored water must not be below 60°C. If this water heater is installed as an in-series booster water heater as part of a commercial solar water heating system, to maximise solar contribution it is recommended the thermostat is set at 60°C, unless sanitising temperatures are... - Page 5 • Do not place anything on top of the water heater or in contact with the draught diverter or flue terminal. Ensure the flue terminal is not obstructed in any way at any time.
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Page 6: To Turn Off The Water Heater
This water heater is supplied with a thermostat, an over-temperature cut-out, and a combination temperature pressure relief valve. These devices must not be tampered with or removed. The water heater must not be operated unless each of these devices is fitted and is in working order. -
Page 7: How Long Will The Water Heater Last
There are a number of factors that will affect the length of service the water heater will provide. These include the water quality, the water pressure, the water temperature (inlet and outlet) and the water usage pattern. However, your Rheem water heater is supported by a comprehensive warranty (refer to page 48). -
Page 8: How Your Water Heater Works
A flue baffle in this flue ensures the efficiency of the water heater is correct. The gas supply to the burner is controlled by the thermostat so the water is heated to a constant temperature. -
Page 9: Regular Care
REGULAR CARE TEMPERATURE PRESSURE RELIEF VALVE This valve is near the top of the water heater and is essential for its safe operation. It is possible for the valve to release a little water through the drain line during each heating period. This occurs as the water is heated and expands by approximately 1/50 of its volume. - Page 10 SERVICING For efficient operation the water heater should be serviced annually by your nearest Rheem Service Department or their Accredited Service Agent. Only genuine replacement parts should be used on this water heater. Warning: Servicing of a gas water heater should only be carried out by authorised personnel.
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Page 11: Save A Service Call
Note: Hotter water increases the risk of scald injury. • Water heater size Do you have the correct size water heater for your requirements? The sizing guide in the Rheem sales literature and on the Rheem website (www.rheem.com.au) on page 13). suggests average sizes that may be needed. -
Page 12: Burner Will Not Light
The ignition system may have ‘locked out’. To reset the water heater, switch the electrical supply off at the isolating switch, wait ten seconds then switch on again. If the water heater fails to light, phone your nearest Rheem Service Department or Accredited Service Agent to arrange for an inspection. -
Page 13: Temperature Pressure Relief Valve Running
Rheem Service Department or Accredited Service Agent to arrange for an inspection. EXPANSION CONTROL VALVE RUNNING If an expansion control valve is fitted in the cold water line to the water heater (refer to page 25) it may discharge a small quantity of water instead of the temperature pressure relief valve on the water heater. -
Page 14: Water Heater Appears To Be Leaking
SAVE A SERVICE CALL WATER HEATER APPEARS TO BE LEAKING When the water heater is first lit or after a large usage of hot water, condensation may form on the burner of the water heater. This is quite normal, especially in winter months and will dry off as the water is heated. -
Page 15: Installation
An indoor model must be installed indoors and an outdoor model must be installed outdoors, except where a 631 275 model water heater is installed indoors with a Rheem room sealed installation kit. The water heater should be installed either close to the most frequently used outlets or with a circulated flow and return system and its position chosen with safety and service in mind. -
Page 16: Indoor Installation
The flue must be self supporting and not impose a load on the water heater. Use a slip joint or similar to allow for disconnection. There must be a vertical rise of 600 mm from the draught diverter before changing direction. -
Page 17: Outdoor Installation
OUTDOOR INSTALLATION The water heater is to be installed at ground level on a concrete or brick plinth (fire proof base) and must stand vertically upright with the back of the water heater against an external wall or alternatively against a fireproof... -
Page 18: Mains Water Supply
* Expansion control valve not supplied with water heater TANK WATER SUPPLY If the water heater is supplied with water from a tank supply, then the bottom of the supply tank must be at least 1 m above the highest hot water outlet and care taken to avoid air locks. -
Page 19: Circulated Hot Water Flow And Return System
Two Temperature Zones Using a Temperature Limiting Device CIRCULATED HOT WATER FLOW AND RETURN SYSTEM If a Rheem water heater is to be installed as part of a circulated hot water flow and return system, a storage water heater able to provide a hot water outlet temperature of at least 60°C must be used. -
Page 20: Reducing Heat Losses
Do not set the controlling electronic thermostat above 70°C unless it is necessary. A time clock to control the electrical supply can be used to switch off the water heater during hours or days when it is not in use. ANODE TYPES... -
Page 21: Saddling Pipe Work
SADDLING PIPE WORK To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket, we recommend the use of self drilling screws with a maximum length of 12 mm. Should pre drilling be required, extreme caution must be observed when penetrating the jacket of the water heater. -
Page 22: Typical Installation - Outdoor Location
INSTALLATION TYPICAL INSTALLATION – OUTDOOR LOCATION 631 275 model shown... -
Page 23: Typical Installation - Indoor Location
INSTALLATION TYPICAL INSTALLATION – INDOOR LOCATION 621 275 model shown... -
Page 24: Dimensions And Technical Data
DIMENSIONS AND TECHNICAL DATA Model No. Storage capacity (litres) Nominal Dimensions (mm) Weight empty (kg) Gas Details Natural / SNG (typical) Town Propane Butane Model numbers: N = Natural; T = Town; P = Propane; B = Butane. Letter N, T, P or B is included in the model number, eg 621275N0, to denote gas type. -
Page 25: Connections - Plumbing
WATER INLET AND OUTLET All pipe work must be cleared of foreign matter before connection and purged before attempting to operate the water heater. All olive compression fittings must use brass or copper olives. Use thread sealing tape or approved thread sealant on all fittings. -
Page 26: Gas Inlet
(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. -
Page 27: Relief Valve Drain
Local regulations may make it mandatory to install an expansion control valve (ECV) in the cold water line to the water heater. In other areas, an ECV is not required unless the saturation index is greater than +0.4 (refer to “Water... -
Page 28: Connections - Electrical
Control” on page 43. If this water heater is installed as an in-series booster water heater as part of a commercial solar water heating system, to maximise solar contribution it is recommended the thermostat is set at 60°C, unless sanitising temperatures are... - Page 29 The principle of operation for multiple gas water heater control with a power flue is the same as for a single water heater. Any water heater can switch on the fan and the burners can only come on when the sail switch is closed.
- Page 30 CONNECTIONS – ELECTRICAL POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION Notes 1. Power source for the water heater, fan and control circuit must be from the same circuit. 2. R1 monitors return signal. 3. R2 monitors alarm signal. 4. T1 to be set for 20-30 seconds.
- Page 31 CONNECTIONS – ELECTRICAL POWER FLUE EXTERNAL CONTROLS – 24 HOUR OPERATION Notes: 1. Power source for the water heater, fan and control circuit must be from the same circuit. 2. R1 monitors return signal. 3. R2 monitors alarm signal. 4. T1 to be set for 20-30 seconds.
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Page 32: Multiple Installations
MULTIPLE INSTALLATIONS A multiple installation of Rheem water heaters on a single manifold or multiple manifolds is possible, using the Rheem Equa-Flow large volumes of hot water are required. The Equa-Flow principle will function with water heaters in line, around a corner or in rows back to back diagrams on page 33). - Page 33 MULTIPLE INSTALLATIONS In Line Manifold Single Bank of Water Heaters Multiple Banks of Water Heaters Angle Manifold Back to Back Manifold TPR Valve Drain Line Common Discharge Point...
- Page 34 MULTIPLE INSTALLATIONS LEGEND TYPICAL INSTALLATION – RHEEM HEAVY DUTY GAS WATER HEATERS...
- Page 35 MULTIPLE INSTALLATIONS In Line Manifold Back to Back Manifold INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS NOTES: 1. Minimum recommended space between wall and back of water heater is 100 mm. 2. A minimum of 900 mm (E* & F*)
- Page 36 MULTIPLE INSTALLATIONS MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly...
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Page 37: Commissioning
DO NOT leave this guide inside of the cover of the water heater, as it may interfere with the safe operation of the water heater or ignite when the water... -
Page 38: Gas Inlet Pressure
TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater on completion of the installation, such as on a building site or where the premises is vacant, then: •... -
Page 39: Lighting The Water Heater
Warning: This gas water heater is designed to operate reliably and safely as long as the lighting procedure is followed exactly. Make sure the water heater is filled with water and the water supply is on, otherwise serious damage to the vitreous enamel cylinder lining and plastic components may occur. -
Page 40: Test The Water Heater After Installation
An LED light on the module will flash once when power is switched on to the water heater. In the event of a fault occurring in or affecting the Hot Surface Ignition system, the system will enter “lock out” and the LED will emit a series of flashes diagnosing the fault. -
Page 41: Burner Pressure Adjustment
Check the test point pressure and compare with the rating label. Adjust if necessary. • If unable to get the water heater working properly, contact your nearest Rheem Service Department or Accredited Service Agent to arrange for an inspection. • When satisfied everything is working properly instruct the user in the correct method of operation. -
Page 42: Draining The Water Heater
Let the other end of the hose go to a drain. • Open the drain cock. • Operate the relief valve again. This will let air into the water heater and allow the water to drain through the hose. “To Turn Off The Water Heater”... -
Page 43: Temperature Control
It is necessary and we recommend that a temperature limiting device be fitted between the water heater and the hot water outlets in any ablution and public areas such as bathrooms, ensuites or public amenities, to reduce the risk of scalding. -
Page 44: Thermostat Adjustment
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 temperature it is necessary to alter the thermostat offset. The table outlines the... - Page 45 This page is intentionally blank.
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Page 46: Saturation Index
In areas where the total dissolved solids (TDS) exceeds 600 mg/L it is possible the black anode, which is the standard anode fitted to the water heater, may be excessively active. To alleviate this, the black anode should be replaced with one colour coded blue. -
Page 47: Warranty Exclusions
Accredited Service Agent, the cost of transport, insurance and travelling costs between the nearest Rheem REPAIR AND REPLACEMENT WORK WILL BE CARRIED OUT AS SET OUT IN THE RHEEM WATER HEATER WARRANTY, HOWEVER THE FOLLOWING EXCLUSIONS MAY CAUSE THE WATER HEATER WARRANTY TO BECOME VOID AND MAY INCUR A SERVICE CHARGE AND / OR COST OF PARTS. -
Page 48: Warranty
** Refer to items 4 and 5 of warranty conditions. Rheem reserves the right to transfer fully functional components from the defective water heater to the replacement water heater if required. The term “water heater” used in the Warranty, Warranty Conditions and Warranty Exclusions means the Rheem supplied water heater(s), solar storage tank(s), solar collector(s), kit(s) and components.
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