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ABOUT YOUR WATER HEATER 

13 

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 a Rheem 312 series water heater is installed. This will keep 
the water temperature below 55°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 

A  Rheem  312025 model  water  heater  features  a  tradesperson  adjustable 
thermostat. This requires a licensed electrical worker to make any temperature 
adjustments. The thermostat has a maximum temperature setting of 70°C. The 
minimum temperature setting is 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 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  requirements.  The  safe  tray  must  also  meet  the 
requirements of Clause G12 of the New Zealand Building Code. AS/NZS 3500.4 
and  the  NZBC  also  have  particular  requirements  when  a  safe  tray  must  be 
installed. 
 
The water heater must be maintained in accordance with the Owner’s Guide and 
Installation Instructions. Refer to 

“Maintenance Requirements”

 on page 15 and 

to 

“Anode Inspection and Replacement”

 on page 18. 

 
If  this  water  heater  is  to  be  used  where  an  uninterrupted  hot  water  supply  is 
necessary  for  your  application  or  business  you  should  ensure  that  you  have 
back-up redundancy within the hot water system design. This should ensure the 
continuity of hot water supply in the event that this water heater were to become 
inoperable for any reason. We recommend you seek advice from a plumber or 
specifier about your needs and building back-up redundancy into your hot water 
supply system. 
 

 

Содержание 31202519V

Страница 1: ...s 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 Model 312025...

Страница 2: ...Zealand Limited TRADEMARKS Registered trademark of Rheem Australia Pty Ltd or Rheem New Zealand Limited TM Trademark of Rheem Australia Pty Ltd or Rheem New Zealand Limited Note Every care has been ta...

Страница 3: ...the terms of the Rheem 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 Mainten...

Страница 4: ...om 1st November 2019 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 after the date specified in...

Страница 5: ...missions b Misuse or abnormal use of the unit c Installation or use not in accordance with the Owner s Guide and Installation Instructions New Zealand Building Code requirements or with relevant statu...

Страница 6: ...process of production or manufacture or repairing or treating in trade other goods or fixtures on land 3 WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3 1 Rheem...

Страница 7: ...ation of the unit or if that s unavailable the date of manufacture and serial number from the rating label on the unit b A Rheem Service Centre will arrange for the unit to be tested and assessed on s...

Страница 8: ...ces 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 Rheem warranty may not cover faults if relief valves o...

Страница 9: ...sion control valve is fitted to the cold water line to the water heater to comply with Clause G12 of the New Zealand Building Code unless the water heater is installed as a push through installation T...

Страница 10: ...one your Rheem Service Centre to arrange for an inspection The temperature pressure relief valve should be replaced at intervals not exceeding five 5 years and the expansion control valve should be ch...

Страница 11: ...l local codes and regulatory authority requirements Installation and commissioning requirements and details for the installing plumber and licensed electrical worker are contained on pages 24 to 38 Ma...

Страница 12: ...esperson adjustable thermostat which allows you to choose the most suitable temperature for your hot water needs Refer to Temperature Adjustment on page 13 To meet the requirements of the New Zealand...

Страница 13: ...rical 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 Ris...

Страница 14: ...more than a few nights conserve energy by switching the water heater off at either the switchboard or isolating switch if one is installed Note When the electrical supply is switched back on the wate...

Страница 15: ...llowing actions Replace the temperature pressure relief valve Inspect and flush the expansion control valve if fitted If required replace the valve Inspect and if required replace the anode If the ano...

Страница 16: ...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...

Страница 17: ...valve and a heating unit Where there is a changeover from one water supply to another e g a rainwater tank supply bore water supply desalinated water supply public reticulated water supply or water br...

Страница 18: ...page 15 then the maximum time after installation when the anode should be replaced for this water heater is ten 10 years CAUTION If the water supply has a TDS greater than 600 mg L there is the possi...

Страница 19: ...to the temperature pressure relief valve and water heater cylinder Where the saturation index exceeds 0 80 the Rheem warranty does not apply to a standard watts density heating unit A low watts densi...

Страница 20: ...l not cover any resultant faults on the components listed below Water Chemistry Component Total Dissolved Solids TDS 600 mg L black colour coded anode installed water heater cylinder Total Dissolved S...

Страница 21: ...t is not realised the amount of hot water used Carefully review the family s hot water usage Have a plumber fit a flow control valve to each outlet to reduce water usage Relief valve running Is the re...

Страница 22: ...s cooler This valve is installed in the cold water line to the water heater refer to the cold water connection diagram on page 32 Continuous dribble Try gently raising the easing lever on the relief v...

Страница 23: ...surprising quantity of hot water and electricity Replace faulty tap washers and have a plumber rectify any leaking pipe work Has there been an increase in hot water usage An increase in hot water usag...

Страница 24: ...ly domestic dwelling for the purpose of heating potable water Its use in an application other than this may shorten its life If this water heater is to be used where an uninterrupted hot water supply...

Страница 25: ...rrier should be used between the two surfaces in this instance The barrier should extend at least 100 mm from the water heater and may be trimmed after two months Remember all local authorities have r...

Страница 26: ...ts the water temperature delivery requirements of Clause G12 of the New Zealand Building Code so that heated water delivered to sanitary fixtures and appliances used primarily for personal hygiene is...

Страница 27: ...Limiting Device A temperature limiting device cannot be installed in circulated hot water flow and return pipe work The tempered water from a temperature limiting device cannot be circulated Where a...

Страница 28: ...his model must be fitted to the water heater 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 Clauses G...

Страница 29: ...g long periods of no use In areas where this is likely to occur the installer should instruct the householder on how to dissipate the gas safely refer to Caution on page 18 SADDLING PIPE WORK To preve...

Страница 30: ...INSTALLATION 30 TYPICAL INSTALLATION INDOOR LOCATION TYPICAL INSTALLATION OUTDOOR LOCATION...

Страница 31: ...Model Storage Capacity TPR Valve Setting Approx Weight empty 31202519V 25 litres 1000 kPa 16 kg This model is suitable for either indoor or outdoor installation The 312025 model has left hand LH wate...

Страница 32: ...ater All olive compression fittings must use brass or copper olives Use an approved thread sealant such as Teflon tape on all sealing threads An isolation valve and non return valve must be installed...

Страница 33: ...fitted before the water heater is operated Before fitting the relief valve make sure the probe has not been bent To fit the relief valve Seal the thread with an approved thread sealant such as Teflon...

Страница 34: ...lause G12 of the New Zealand Building Code unless the water heater is installed as a push through installation refer to Push Through Free Outlet Installation on page 28 The expansion control valve mus...

Страница 35: ...temperature pressure relief valve and expansion control valve from an individual water heater may be interconnected where freezing is unlikely to occur The combined drain line must have a minimum siz...

Страница 36: ...water heater The conduit is to be connected to the unit with a 20 mm terminator Connect the power supply wires directly to the terminal block and earth tab connection ensuring there are no excess wir...

Страница 37: ...CONNECTIONS ELECTRICAL 37 WIRING DIAGRAM SINGLE ELEMENT ELECTRIC WATER HEATERS Electrical Circuit for Single Element Models Robertshaw ST Thermostat...

Страница 38: ...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...

Страница 39: ...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...

Страница 40: ...Revision Date 2021 July 122283C 40...

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