Rheem 491400G8 - Manuals

RHEEM ELECTRIC DOMESTIC MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY 5 ELECTRIC WATER HEATERS 421, 491, 492 SERIES 080-400 MODELS 2.5 Where the water heater is installed outside the boundaries of a metropolitan area as defined by Rheem or further than 25 km from either a regional Rheem bran...

RHEEM ELECTRIC DOMESTIC MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY 6 ELECTRIC WATER HEATERS 421, 491, 492 SERIES 080-400 MODELS 2.9 Subject to any statutory provisions to the contrary, this warranty excludes any and all claims for damage to furniture, carpet, walls, foundations or any oth...

RHEEM ELECTRIC DOMESTIC MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY 7 ELECTRIC WATER HEATERS 421, 491, 492 SERIES 080-400 MODELS 4. ENTITLEMENT TO MAKE A CLAIM UNDER THIS WARRANTY 4.1 To be entitled to make a claim under this warranty you need to: a) Be the owner of the water heater or hav...

8 ABOUT YOUR WATER HEATER WATER HEATER APPLICATION This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable water. Its use in an application other than this may shorten its life. MODEL TYPE The Rheemglas ® 49 series or RheemPlus TM 421 series wate...

ABOUT YOUR WATER HEATER 9 HOTTER WATER INCREASES THE RISK OF SCALD INJURY This water heater can deliver water at temperatures which can cause scalding. Check the water temperature before use, such as when entering a shower or filling a bath or basin, to ensure it is suitable for the application and ...

ABOUT YOUR WATER HEATER 10 SAFETY This water heater is supplied with a thermostat, an over-temperature cut-out and a combination temperature pressure relief valve. In addition, a RheemPlus water heater has a temperature limiting valve. These devices must not be tampered with or removed. The water he...

ABOUT YOUR WATER HEATER 11 SINGLE ELEMENT MODEL This type of water heater has one heating unit with its own thermostat, located at the base of the water heater.  Continuous electricity supply This type of connection is suited to where the storage capacity is less than the normal daily usage.  Off-...

ABOUT YOUR WATER HEATER 12 PRECAUTIONS Where damage to property can occur in the event of the water heater leaking, the water heater must be installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4 and all local codes and regulatory authority re...

ABOUT YOUR WATER HEATER 13 HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 25 to 32. The water heater must be installed:  by a qualified person, and  in accordance with the installation instructions, and  in compliance with Standards AS/NZS 3...

14 MAINTENANCE REQUIREMENTS MAJOR SERVICE EVERY SIX YEARS It is recommended a major service be conducted on the water heater every six (6) years. Warning : Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem Service or their nearest Accredited Service Agent. Note...

MAINTENANCE REQUIREMENTS 15 MINOR MAINTENANCE EVERY SIX MONTHS It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be performed by the dwelling occupant. The minor maintenance includes:  Operate the easing lever on the temperature pressure relief valve. It i...

MAINTENANCE REQUIREMENTS 16 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 expan...

MAINTENANCE REQUIREMENTS 17 TEMPERATURE LIMITING VALVE A RheemPlus water heater is fitted with a temperature limiting valve at the hot water outlet. The valve is set to deliver water not exceeding 50°C. The valve should be checked for performance at least every twelve (12) months. This can be perfor...

18 WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the Rheem warranty. This water heater is manufactured to suit the water conditions of most public reticulated water supplies. However, there are some known water chemistries which can have detriment...

WATER SUPPLIES 19 ANODE INSPECTION AND REPLACEMENT The anode installed in your water heater will slowly dissipate whilst protecting the cylinder. The life of the cylinder may be extended by replacing the anode. For water supplies which are either softened or desalinated, or where the water supply ma...

WATER SUPPLIES 20 SATURATION INDEX The saturation index is used as a measure of the water’s corrosive or scaling properties. The saturation index figures stated are calculated using a water temperature of 80°C. In a corrosive water supply, the water can attack copper parts and cause them to fail. Wh...

WATER SUPPLIES 21 CHANGE OF WATER SUPPLY The changing or alternating from one water supply to another can have a detrimental effect on the operation and / or life expectation of a water heater cylinder, a temperature pressure relief valve and a heating unit. Where there is a changeover from one wate...

22 SAVE A SERVICE CALL Check the items below before making a service call. You will be charged for attending to any condition or fault that is not related to the manufacture or failure of a part. NOT ENOUGH HOT WATER (OR NO HOT WATER)  Is the electricity switched on? Inspect the isolating switch ma...

SAVE A SERVICE CALL 23  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) suggests average sizes that may be needed. WATER TEMPERATURE TOO HIGH A RheemPlus water heater is fit...

SAVE A SERVICE CALL 24 EXPANSION CONTROL VALVE RUNNING If an expansion control valve is fitted in the cold water line to the water heater (refer to the cold water connection diagram on page 36) it may discharge a small quantity of water instead of the temperature pressure relief valve on the water h...

25 INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING INSTALLATION STANDARDS The water heater must be installed:  by a qualified person, and  in accordance with the installation instructions, and  in compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulat...

INSTALLATION 26 You must be able to read the information on the rating plate. If possible leave headroom of one water heater height so the anode can be inspected or replaced. Remember you may have to take the entire water heater out later for servicing. The water heater is to be installed at ground ...

INSTALLATION 27 TANK WATER SUPPLY If the water heater is supplied with water from a tank supply and a pressure pump system is not installed, then the bottom of the supply tank must be at least 1 m above the highest point of the hot water plumbing system, including the water heater. Care must be take...

INSTALLATION 29 CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A RheemPlus water heater cannot be installed as part of a circulated hot water flow and return system in a building. If a Rheem electric water heater is to be installed as part of a circulated hot water flow and return system, it must be ab...

INSTALLATION 30 Off-Peak or Time Controlled Electricity Supply A single or twin element electric water heater connected to an Off-Peak electricity supply should not be installed as part of a circulated hot water flow and return system in a building. The benefits of the Off-Peak electricity supply wi...

INSTALLATION 31 ANODE The vitreous enamel lined cylinder of the water heater is only covered by the Rheem warranty when the total dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode is used. If an incorrect colour coded anode is used in the wate...

INSTALLATION 32 TYPICAL INSTALLATION – OUTDOOR LOCATION TYPICAL INSTALLATION – INDOOR LOCATION

INSTALLATION 33 DIMENSIONS AND TECHNICAL DATA – RHEEMGLAS 49 SERIES 080 TO 160 Rheemglas Single Element Rheemglas Twin Element DH DH 491080 - 491125 - 491160 492160 Hot Water Delivery Litres 80 125 160 Boost Capacity Litres - - 45 Dimensions A mm 945 1340 1610 B mm 480 480 480 C mm 515 515 515 D mm ...

36 CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in accordance with the Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements. CONNECTION SIZES Rheemglas 49 series RheemPlus 421 series  Hot water connection: Rp 3/4 G 3/4 B  Cold w...

CONNECTIONS – PLUMBING 37 LEFT AND RIGHT HAND SIDE WATER CONNECTIONS The cold and hot water supplies (49 series 080 to 400 models) and temperature pressure relief valve (49 series 080 and 125 models) can be connected to either side of a water heater. A kit is supplied with the water heater to plug o...

CONNECTIONS – PLUMBING 38 PIPE SIZES This water heater is intended to be permanently connected to the water mains and not connected by a hose-set. A braided flexible hose or semi-flexible connector may be used for connection to the water heater, where permitted by AS/NZS 3500.4. To achieve true main...

CONNECTIONS – PLUMBING 39 EXPANSION CONTROL VALVE 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 required if the saturation index is greater than +0.4 (refer to “Water Supplies” on page 18). Th...

41 CONNECTIONS – ELECTRICAL The power supply to the water heater must not be switched on until the water heater is filled with water and a satisfactory megger reading is obtained. All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the Wiring Rul...

CONNECTIONS – ELECTRICAL 42 For reasons of safety and economy, we advise the thermostat be set at the lowest temperature that will provide sufficient hot water. Dishwasher running costs can be adversely affected if the thermostat is set below 65°C. Discuss the thermostat setting requirements with th...

43 COMMISSIONING TO FILL AND TURN ON THE WATER HEATER The power supply to the water heater must not be switched on until the water heater is filled with water and a satisfactory megger reading is obtained.  Open all of the hot water taps in the house (don’t forget the shower).  Open the cold water...

COMMISSIONING 44 OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – RHEEMPLUS The maximum outlet temperature of a RheemPlus water heater may be adjusted to compensate for temperature losses in the pipe work between the water heater outlet and sanitary fixtures. Warning: After adjustment of the temperature...

COMMISSIONING 45  Using a thermometer, measure the temperature of the water from the tap, until the temperature stops increasing. If the water temperature is below 50°C the maximum outlet temperature of the water heater can be adjusted upwards.  Turn the adjusting knob on the temperature limiting ...

46 DRAINING THE WATER HEATER Warning: Exercise care, as water discharged from the water heater may be of a very high temperature. To drain the water heater:  Turn off the water heater (refer to “To Turn Off The Water Heater” on page 43).  Close all hot water taps.  Operate the relief valve releas...