Page 2 - PATENTS; in the name of Rheem Australia Pty Ltd.; TRADEMARKS; Registered trademark of Rheem Australia Pty Ltd.; Trademark of Rheem Australia Pty Ltd; with the householder or responsible officer.; DO NOT; leave this guide inside of the cover of the water heater,
PATENTS This water heater may be protected by one or more patents or registered designs in the name of Rheem Australia Pty Ltd. TRADEMARKS ® Registered trademark of Rheem Australia Pty Ltd. TM Trademark of Rheem Australia Pty Ltd Note: Every care has been taken to ensure accuracy in preparation of t...
Page 3 - CONTENTS; RESPONSIBLE OFFICER
3 CONTENTS RESPONSIBLE OFFICER – We recommend you read pages 4 to 15. The other pages are intended for the installer but may be of interest. About Your Water Heater ............................................................................................................ 4 Maintenance Requirements...
Page 4 - ABOUT YOUR WATER HEATER; WATER HEATER APPLICATION
4 ABOUT YOUR WATER HEATER WATER HEATER APPLICATION This water heater is designed for the purpose of heating potable water. Its use in an application other than this may shorten its life. MODEL TYPE The Rheem ® Heavy Duty Gas water heater model you have chosen is either a 265 litre or 275 litre indoo...
Page 5 - TEMPERATURE ADJUSTMENT
ABOUT YOUR WATER HEATER 5 TEMPERATURE ADJUSTMENT The water heater features an electronic adjustable thermostat. We recommend only a licensed tradesperson make any temperature adjustments. We advise the thermostat be adjusted to the lowest temperature setting that meets your needs, especially if ther...
Page 6 - flammable or combustible materials; PRECAUTIONS
ABOUT YOUR WATER HEATER 6 Do not store flammable or combustible materials near the water heater. Flammable liquids (such as petrol), newspapers and similar articles must be kept well away from the water heater and the draught diverter or flue terminal. Gases from some aerosol sprays, stain remov...
Page 7 - HOW DO I KNOW THE WATER HEATER IS INSTALLED CORRECTLY?
ABOUT YOUR WATER HEATER 7 HOW DO I KNOW THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 16 to 23. The water heater must be installed: by a qualified person, and in accordance the installation instructions, and in compliance with Standards AS/NZS 3500.4, an...
Page 8 - MAINTENANCE REQUIREMENTS; MAJOR SERVICE EVERY FIVE YEARS; “Anode Inspection and Replacement”; Warning
8 MAINTENANCE REQUIREMENTS MAJOR SERVICE EVERY FIVE YEARS It is recommended a major service be conducted on the water heater every five (5) years. Warning : Servicing of a gas water heater must only be carried out by qualified personnel. Phone Rheem Service or their nearest Accredited Service Agent....
Page 9 - MINOR MAINTENANCE EVERY SIX MONTHS; EXPANSION CONTROL VALVE; It is very important the lever is raised and lowered gently.
MAINTENANCE REQUIREMENTS 9 MINOR MAINTENANCE EVERY SIX MONTHS It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be performed by a responsible officer. The minor maintenance includes: Operate the easing lever on the temperature pressure relief valve. It is...
Page 10 - WATER SUPPLIES; CHANGE OF WATER SUPPLY; ANODE SELECTION
10 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 suppl ies. However, there are some known water chemistries which can have detrimen...
Page 11 - ANODE INSPECTION AND REPLACEMENT
WATER SUPPLIES 11 ANODE INSPECTION AND REPLACEMENT The anodes installed in your water heater will slowly dissipate whilst protecting the cylinde r. The life of the cylinder may be extended by replacing the anodes. For water supplies which are either softened or desalinated, or where the water supply...
Page 12 - SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY; water heater cylinder; SATURATION INDEX; very corrosive; WITHIN WARRANTY; GAS STORAGE WATER HEATERS; no wa
WATER SUPPLIES 12 SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY The water heater and its components are not suitable for certain water chemistries. Those chemistries are listed below. If the water heater is connected at any time to a water supply with the following water chemistry, the Rheem ...
Page 13 - SAVE A SERVICE CALL; “Water Heater Not Operating”
13 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 manufacture or failure of a part. NOT ENOUGH HOT WATER (OR NO HOT WATER) Is the electricity switched on? Inspect the isolating switch adjace...
Page 14 - DIAGNOSTIC FEATURES OF ELECTRONIC THERMOSTAT; Temperature sensor failure; BURNER WILL NOT LIGHT; Check the gas isolation valve on the gas supply line is open.; Is there a normal gas supply to the rest of the premises?; Try resetting the water heater. Refer to; Neither LED is illuminated; This indicates a loss of power to the water heater.
SAVE A SERVICE CALL 14 DIAGNOSTIC FEATURES OF ELECTRONIC THERMOSTAT This water heater incorporates an electronic thermostat. In the event of a fault occurring with the thermostat, a 2-digit code will be displayed. Code Fault E1 Temperature sensor failure If the fault code is displayed, phone Rheem S...
Page 15 - TEMPERATURE PRESSURE RELIEF VALVE RUNNING; Normal Operation; “Temperature Pressure Relief Valve”; Steady flows for long period (often at night); EXPANSION CONTROL VALVE RUNNING
SAVE A SERVICE CALL 15 TEMPERATURE PRESSURE RELIEF VALVE RUNNING Normal Operation It is normal and desirable that this valve allows a small quantity of water to escape during the heating cycle. However, if the discharge is deemed excessive (more than 2% of hot water used), there may be another pro...
Page 16 - INSTALLATION; THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
16 INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING. Check the water heater is suitable for the gas type available. (refer to the rating label on the water heater) Note: In Australia, natural gas models can be connected to SNG, however the hourly gas consumption may be reduced (typica...
Page 17 - diagrams on pages; Ventilation; be self-supporting and not impose a load on the water heater.
INSTALLATION 17 The water heater must not be installed in an area with a corrosive atmosphere where chemicals are stored or where aerosol propellants are released. Remember the air may be safe to breath e, but when it goes through a flame, chemical changes take place which may attack the water heate...
Page 18 - OUTDOOR INSTALLATION; against or; At least 500 mm clear of any combustibles.; Relief valve setting; * Expansion control valve not supplied with water heater; TANK WATER SUPPLY
INSTALLATION 18 OUTDOOR INSTALLATION The water heater is to be installed at ground or floor level on a stable fireproof base as acceptable to local authorities. The water heater must also stand vertically upright with the back of the water heater against or within 150 mm of an external wall or alter...
Page 19 - HOT WATER DELIVERY; Two Temperature Zones Using a Temperature Limiting Device
INSTALLATION 19 HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. 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, ensuit...
Page 20 - CIRCULATED HOT WATER FLOW AND RETURN SYSTEM; Temperature Limiting Device; Circulated Hot Water Flow and Return System
INSTALLATION 20 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. Note: The thermostat must always be s...
Page 21 - REDUCING HEAT LOSSES
INSTALLATION 21 REDUCING HEAT LOSSES The cold water line to and the hot water line from the water heater must be insulated in accordance with the requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. Keep temperature settings down. Lower temperatures reduce ...
Page 22 - TYPICAL INSTALLATION
INSTALLATION 22 TYPICAL INSTALLATION – OUTDOOR LOCATION 631 275 model shown
Page 24 - DIMENSIONS AND TECHNICAL DATA
INSTALLATION 24 DIMENSIONS AND TECHNICAL DATA Model No. 621265 631265 621275 631275 (Indoor) (Outdoor) (Indoor) (Outdoor) Storage capacity (litres) 265 265 275 275 Nominal Dimensions (mm) A 1795 1835 1895 1865 B 610 610 640 640 C 750 710 780 780 D 750 750 760 760 E 700 700 700 700 F 380 380 340 340 ...
Page 25 - CONNECTIONS – PLUMBING; CONNECTION SIZES
25 CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in compliance with the Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements. All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or AS/...
Page 26 - TEMPERATURE PRESSURE RELIEF VALVE
CONNECTIONS – PLUMBING 26 TEMPERATURE PRESSURE 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 su...
Page 27 - GAS INLET
CONNECTIONS – PLUMBING 27 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 servicin...
Page 28 - CONNECTIONS – ELECTRICAL; ELECTRICAL CONNECTION; gas control operation; Method of Wiring for Remote Control or Time Switch
28 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. Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable wa...
Page 29 - THERMOSTAT SETTING
CONNECTIONS – ELECTRICAL 29 THERMOSTAT SETTING The thermostat is adjustable from 60°C to 82°C. For reasons of safety and economy, we advise the thermostat is set at the lowest temperature that will provide sufficient hot water. Discuss the thermostat setting requirements with a responsible officer. ...
Page 30 - POWER FLUE EXTERNAL CONTROLS; INTERLOCK TERMINAL; INTERLOCK TERMINAL; WIRING DIAGRAM - POWER FLUE CONNECTION; Notes
CONNECTIONS – ELECTRICAL 30 POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION multiple water heater installation WIRING DIAGRAM - POWER FLUE CONNECTION INTERMITTENT FAN OPERATION-MULTIPLE WATER HEATER Rheem Heavy Duty Gas Water Heaters-621 Series Raypak B Type Water Heaters-B0507 to B4224 INTERL...
Page 31 - WIRING DIAGRAM - 24 HR FAN OPERATION POWER FLUE CONNECTION
CONNECTIONS – ELECTRICAL 31 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. 5. Use SPO with round earth t...
Page 32 - BMS INTERFACE MODULE; Green LED illuminated; Red LED illuminated; “Water Heater Not Operating”; BMS Interface Module Connections
CONNECTIONS – ELECTRICAL 32 BMS INTERFACE MODULE The water heater can be connected to a Building Management System (BMS) by a Rheem BMS Interface Module (P/N 299239). The module is an interface between an individual gas water heater and a Building Management System (BMS) to remotely provide real tim...
Page 33 - MULTIPLE INSTALLATIONS; must not
33 MULTIPLE INSTALLATIONS A multiple installation of Rheem water heaters on a single manifold or multiple manifolds is possible, using the Rheem Equa-Flow ® manifold system, where large volumes of hot water are required. The Equa-Flow principle will function with water heaters in line, around a corn...
Page 35 - RHEEM COMMERCIAL WATER HEATERS; RHEEM COMMERCIAL WATER HEATERS INSTALLATION DIMENSIONS; In Line Manifold
MULTIPLE INSTALLATIONS 35 TYPICAL INSTALLATION – RHEEM HEAVY DUTY GAS WATER HEATERS INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS Installation Layout Minimum Dimensions Notes Model A B C D E * F * 1. Minimum recommended space between wall and back of water heater is 100 mm. 621 265 86...
Page 36 - MANIFOLD ARRANGEMENT
MULTIPLE INSTALLATIONS 36 MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly
Page 37 - COMMISSIONING; TO FILL AND TURN ON THE WATER HEATER; GAS INLET PRESSURE; IMPORTANT; TO TURN OFF THE WATER HEATER
37 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 tap(s) in the building (don’t forget the showers) and supply cock(...
Page 38 - LIGHTING THE WATER HEATER; FOR YOUR SAFETY READ BEFORE LIGHTING; exactly; “Gas Inlet”; transport clip
38 LIGHTING THE WATER HEATER FOR YOUR SAFETY READ BEFORE LIGHTING 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 ...
Page 39 - BURNER PRESSURE ADJUSTMENT; DRAINING THE WATER HEATER; “To Turn Off The Water Heater”
LIGHTING THE WATER HEATER 39 BURNER PRESSURE ADJUSTMENT Switch off the electrical supply at the isolating switch. Attach a manometer to the test spigot at side of gas control. Switch on the electrical supply at the isolating switch. Check the gas pressure (refer to data plate). If necessar...
Page 40 - TEMPERATURE CONTROL; HOTTER WATER INCREASES THE RISK OF SCALD INJURY.; essential; to install
40 TEMPERATURE CONTROL HOTTER WATER INCREASES THE RISK OF SCALD INJURY. This water heater can deliver water at temperatures which can cause scalding. 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 p...
Page 41 - THERMOSTAT ADJUSTMENT
TEMPERATURE CONTROL 41 THERMOSTAT ADJUSTMENT The water heater is supplied with the thermostat preset at 70°C. 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...
Page 42 - This page is intentionally blank.
Page 43 - THE RHEEM WARRANTY – GENERAL; TERMS OF THE RHEEM WARRANTY AND EXCLUSIONS TO IT; The Rheem warranty does not cover faults that are a result of:
43 RHEEM HEAVY DUTY GAS MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY GAS WATER HEATER 621, 631 SERIES 265, 275 MODELS 1. THE RHEEM WARRANTY – GENERAL 1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street, Rydalmere New South Wales. 1.2 Rheem offer a t...
Page 44 - Revision Date: 2016 November; ENTITLEMENT TO MAKE A CLAIM UNDER THIS WARRANTY; Australian Consumer Law
RHEEM HEAVY DUTY GAS MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY Revision Date: 2016 November 122092M 44 GAS WATER HEATER 621, 631 SERIES 265, 275 MODELS 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.1 Rheem will repair or replace a faulty compo...
