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ABOUT YOUR WATER HEATER 

13 

HOTTER WATER INCREASES THE RISK OF SCALD INJURY 

This water heater can deliver hot water at temperatures up to 70°C depending 
upon the thermostat setting, sufficiently hot to cause severe scalding. Water at 
this  temperature  may  have  been  plumbed  to  fixtures  where  water  hotter  than 
50°C is allowed, such as the kitchen and laundry. 
 
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 will not cause 
scald injury. 
 
We  recommend  and  it  may  also  be  required  by  regulations  that  an  approved 
temperature limiting device be fitted into the hot water pipe work to the bathroom 
and  ensuite  when  this  water  heater  is  installed.  This  will  keep  the  water 
temperature below 50°C at the bathroom and ensuite. The risk of scald injury will 
be reduced and still allow hotter water to the kitchen and laundry. 
 

THERMOSTAT 

The thermostat automatically controls the electricity supply to the heating unit so 
a  constant  temperature  is  maintained.  The  thermostat  and  its  protective  over 
temperature cut out is mounted inside the front cover of the water heater. There 
is no need to switch the water heater off when it is not in use, except when you 
are on an extended holiday. The thermostat is fully automatic and power is only 
used when heating is required. 
 

TEMPERATURE ADJUSTMENT 

The water heater features a tradesperson adjustable thermostat, which allows 
you  to  select  the  most  suitable  temperature  for  your  hot  water  needs.  This 
requires a licensed electrical worker to make any temperature adjustments. The 
thermostat  has  a  maximum  temperature  setting  of  70°C  and  a  minimum 
temperature setting of 60°C. 
 
We advise you to have a licensed electrical worker adjust the thermostat to the 
lowest temperature setting that meets your needs, especially if there are young 
children  or  elderly  people  in  your  home.  Refer  to 

“Hotter Water Increases the 

Risk of 

Scald Injury”

 on page 13. 

 

Summary of Contents for 971 Series

Page 1: ...This water heater must be installed and serviced by a qualified person Please leave this guide with the householder Owner s Guide and Installation Instructions Electric Domestic Water Heater...

Page 2: ...Ltd TRADEMARKS Registered trademark of Aquamax Australia Pty Limited or Rheem Australia Pty Ltd TM Trademark of Aquamax Australia Pty Limited or Rheem Australia Pty Ltd Note Every care has been taken...

Page 3: ...the terms of the Aquamax warranty on pages 4 to 7 The other pages are intended for the installer but may be of interest Warranty 4 Safety Warnings Installation Notes 8 About Your Water Heater 12 Maint...

Page 4: ...heaters manufactured from 1st December 2018 1 5 If a subsequent version of this warranty is published the terms of that warranty and what is covered by it will apply to water heaters manufactured aft...

Page 5: ...This warranty only applies to the original and genuine Aquamax water heater in its original installed location and any genuine Aquamax replacement parts 2 8 The Aquamax warranty does not cover faults...

Page 6: ...ply the hot water demand in accordance with the guidelines in the Aquamax water heater literature any resultant fault will not be covered by the Aquamax warranty 3 WHAT IS COVERED BY THE AQUAMAX WARRA...

Page 7: ...contact number and date of installation of the water heater or if that s unavailable the date of manufacture and serial number from the rating label on the water heater b Aquamax will arrange for the...

Page 8: ...ices 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 The Aquamax warranty may not cover faults if relief valve...

Page 9: ...Western Australia and scaling water areas it is mandatory an expansion control valve is fitted to the cold water line to the water heater The expansion control valve will discharge the quantity of wa...

Page 10: ...erature pressure relief valve should be replaced at intervals not exceeding five 5 years and the expansion control valve should be checked for performance or replaced at intervals not exceeding five 5...

Page 11: ...l worker are contained on pages 26 to 42 Mains pressure water supply The water heater is designed to operate at mains pressure by connecting directly to the mains water supply The water heater is supp...

Page 12: ...ted to the water heater to provide safe and efficient operation The water heaters have connections on either side of the tank Plugs block off the alternative connection points A 160 model has caps cov...

Page 13: ...o the kitchen and laundry THERMOSTAT The thermostat automatically controls the electricity supply to the heating unit so a constant temperature is maintained The thermostat and its protective over tem...

Page 14: ...th its own thermostat One heating unit is at the base of the water heater and the other near the top Bottom heating unit During normal operation this heating unit supplies all the hot water Top heatin...

Page 15: ...upply system TO TURN OFF THE WATER HEATER If you plan to be away from home for only a few nights we suggest you leave the water heater switched on If it is necessary to turn off the water heater Switc...

Page 16: ...THE WATER HEATER The water heater is suitable for most public water supplies however some water chemistries may have detrimental effects on the water heater its components and fittings Refer to Water...

Page 17: ...lief valve Inspect and flush the expansion control valve if fitted If required replace the valve Inspect and if required replace the anode If the anode is not replaced it should be replaced within fiv...

Page 18: ...ised and lowered gently Refer to Relief Valves on page 9 Warning Water discharged from the temperature pressure relief valve drain line will be hot Exercise care to avoid any splashing of water by sta...

Page 19: ...lour coded anode is used If an incorrect colour coded anode is used in the water heater any resultant faults will not be covered by the Aquamax warranty In addition the use of an incorrect colour code...

Page 20: ...eater than 600 mg L and the anode has not been changed to a blue anode there is the possibility the anode may become overactive and hydrogen gas could accumulate in the top of the water heater during...

Page 21: ...apply to the temperature pressure relief valve and water heater cylinder Where the saturation index exceeds 0 80 the Aquamax warranty does not apply to a standard watts density heating unit A low wat...

Page 22: ...in these guidelines for the Aquamax warranty to apply SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY The water heater and its components are not suitable for certain water chemistries Those chem...

Page 23: ...t water heaters A twin element non simultaneous model must have power available to the top heating unit circuit at all times for the water heater to operate as designed Are you using more hot water th...

Page 24: ...t has a lower pressure rating A benefit is that energy is conserved as the discharged water is cooler This valve is installed in the cold water line to the water heater refer to the cold water connect...

Page 25: ...plumber rectify any leaking pipe work Has there been an increase in hot water usage An increase in hot water usage will result in an increase in water heater operation Has your water heating tariff ra...

Page 26: ...aterials must be removed from the water heater prior to its installation This includes the removal of the cardboard base of the carton from the underside of the water heater WATER HEATER APPLICATION T...

Page 27: ...base as acceptable to local authorities The base of the water heater is made of corrosion resistant material and it may be placed directly in contact with the supporting surface It is not necessary t...

Page 28: ...a full flow gate valve or ball valve ANODE The vitreous enamel lined cylinder of the water heater is only covered by the Aquamax warranty when the total dissolved solids TDS content in the water is le...

Page 29: ...or personal hygiene such as in a bathroom ensuite public amenities or other ablution areas to reduce the risk of scalding Where a temperature limiting device is installed adjacent to the water heater...

Page 30: ...return pipe If circulated tempered water were to be returned back to the water heater depending on the location of the return line connection on the water supply line to the water heater then either w...

Page 31: ...ater The flow and return lines connect to the secondary water heater not the Off Peak electric water heater The secondary water heater makes up for the pipe heat loss in the flow and return system and...

Page 32: ...E 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 13 mm Should pre drilling...

Page 33: ...INSTALLATION 33 TYPICAL INSTALLATION OUTDOOR LOCATION TYPICAL INSTALLATION INDOOR LOCATION...

Page 34: ...0 680 680 730 D mm 1332 642 1112 1317 1479 E mm 104 113 73 113 121 F mm 66 103 103 103 105 G mm 988 1228 1323 H deg 23 32 32 32 30 J deg 58 88 88 88 83 M deg 58 92 92 92 97 TPR Valve Setting kPa 1400...

Page 35: ...lve and non return valve must be installed on the cold water line to the water heater An acceptable arrangement is shown in the diagram Refer also to Hot Water Delivery on page 29 and to Mains Water S...

Page 36: ...Tighten the plugs using a 3 8 square driver Fit a plastic cap where supplied with its insulation rubber disc over each plug PIPE SIZES To achieve true mains pressure operation the cold water line to...

Page 37: ...ing Do not use a pipe wrench or poor fitting tool on the valve body nor over tighten the valve as this could damage the valve and prevent safe operation Operate the easing lever on the valve to check...

Page 38: ...as short as possible have a continuous fall all the way from the water heater to the discharge outlet and have no tap valves or other restrictions in the pipe work A drain line from a relief valve mu...

Page 39: ...as for a drain line from a relief valve Warning As the function of the temperature pressure relief valve on this water heater is to discharge high temperature water under certain conditions it is stro...

Page 40: ...ff Peak overnight and day or continuous electricity supply depending upon the size of the water heater Check with the local electricity supply authority as to their requirements An Off Peak overnight...

Page 41: ...ts with the householder WIRING DIAGRAM TWIN ELEMENT ELECTRIC WATER HEATERS NON SIMULTANEOUS OPERATION OFF PEAK CONNECTION Top thermostat fixed setting 60 C Bottom thermostat tradesperson adjustable mi...

Page 42: ...the easing lever on the temperature pressure relief valve to check the smooth operation of the valve plunger and that water discharges freely from the drain line It is very important the lever is rais...

Page 43: ...t the lever snap back or you will damage the valve seat It is very important the lever is raised and lowered gently Operating the lever will release the pressure in the water heater Undo the union at...

Page 44: ...upon completion of the installation This information should be provided to assist the customer in an event that a claim is to be made under the Aquamax warranty Plumber Name Company Plumber s Licence...

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