Direct vent tankless water heater, temperature controllers (194 pages)
Summary of Contents for Rinnai HOTFLO EHFA Series
Page 1
Installation Manual HOTFLO (EHFA/EHFD) Series Mains Pressure Vitreous Enamel Electric Storage Water Heater This appliance must be installed in accordance with: • Manufacturer’s Installation Instructions • Municipal Building Codes • Current AS/NZS 3000 Wiring Rules • Current AS/NZS 3500.4 Plumbing and Drainage - Heated Water Services •...
Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death. YourRinnaiHotfloMainsPressureVitreousEnamelElectricStorageWaterHeaterhasbeen certified by relevant plumbing and electrical authorities and the details are shown on data plate.
Installing tempering valves or thermostatic mixing valves which reduce the hot water temperature delivered tothetaps.Yourlocalplumbingauthoritymayalreadyrequirethatthesebefitted.Contactyourinstaller orlocalplumbingauthorityifindoubt. Never…. Leave a toddler in the care of another child. They may not understand the need to have the water temperature set at a safe level. Rinnai EHFA/EHFD HW IM...
If the valve dribbles or leaks continuously, operate the easing gear for a few seconds� This may dislodge any foreign matter and stop leakage� If leakage does not stop Contact Rinnai to arrange inspection by a qualified person.
It is recommended that the anode be inspected at least every 5 years. The factory fitted Rinnai anode is Magnesium based� This anode is suitable when the total dissolved solids (TDS) content in the water supply does not exceed 600 mg/L, which is the case in most areas� In areas where the total dissolved solids (TDS) content in the water supply exceeds 600 mg/L the Rinnai aluminium based anode is required�...
Rinnai service network personnel are fully trained and equipped� If your Rinnai appliance requires servicing contact Rinnai as per the details on the back page of this manual� Rinnai recommends that this commercial appliance be inspected and serviced by a qualified person every 12 months.
In accordance with AS/NZS 3500.4 12� Safe Tray & drain Where required, in accordance with AS/NZS 3500.4 RemovalandconnectionbyqualifiedpersonsONLY,inaccordancewithAS/NZS3000 ValveswithpressureratingsotherthanspecifiedareunsuitableandMUST NOTbeused. NOTE WATER HEATER - located closest to most frequently used outlet - Access for service in the installed position. Rinnai EHFA/EHFD HW IM...
It may be a requirement that the hot and cold water supply pressures to a Temperature Limiting Device (TLD) are equal� If this is the case, a PLV with the same pressure rating as the PLV for the hot water is required for the TLD as shown� Rinnai EHFA/EHFD HW IM...
BATHROOM Temperature Valve (Supplied) Valve TO DRAIN Limiting Device (TLD) ENSUITE Non-return Valve COLD SUPPLY WATER HEATER Isolating Non-return Valve Valve TO DRAIN (Not Supplied) ValveswithpressureratingsotherthanspecifiedareunsuitableandMUST NOT beused. Forratingssee"Table2.Ratings&OtherSpecifications"onpage11. Thisschematicisanexampleonly,variationsmayalsobesuitable. CAUTION TemperedwaterfromaTLDCANNOTbere-circulated.TheTLDMUST BE positioned in adeadleg,branchingoffthecirculatedhotwaterflowandreturnpipe. Rinnai EHFA/EHFD HW IM...
This appliance is NOTsuitable for use as a spa or swimming pool heater� LOCATION The Rinnai Hotflo (EHFA/EHFD) storage water heater range have an ingress protection rating of IPX4 making them suitable for internal or external installation� The water heater should be placed as close as practicable to the most frequently used hot water outlet point or points to minimize the delay time for hot water delivery�...
Rinnai recommend that an approved TLD is fitted into the hot water pipe work from the water heater to areas used primarily for personal hygiene such as bathrooms and ensuites to reduce the risk of scalding�...
In areas where water pipes are prone to freezing, drain lines MUSTBEinsulated and NOT exceed 300mm in length� In this case the drain line MUST discharge into a tundish through an air gap of between 75mm and 150 mm� Rinnai EHFA/EHFD HW IM...
Inspect and ensure that all wiring links are secure prior to fixing the access cover and turning the POWER ON� To ensure the Over-temperature and Energy Cut-out is set, press the (red) 'reset' button on the Thermostat� Rinnai EHFA/EHFD HW IM...
The water heater as delivered will have the thermostat preset to 70°C� EnsurethepowersupplyisswitchedOFFbeforeremovingtheaccesscovertotheelementand thermostat. WARNING TheaccesscovertotheelementandthermostatMUST ONLY BEremovedbyanElectricianor othersuitablyqualifiedtradesperson. ThethermostatsettingMUST ONLY BEadjustedbyanelectricianorothersuitablyqualified trades person. Afteradjustment,pressthe(red)‘Reset’Buttononthethermostatstoensuretheover-temperature andenergycut-outisset. Rinnai EHFA/EHFD HW IM...
It may be necessary to turn off a water heater after installation and commissioning, for example during building activities or if the premises are vacant� 1� Isolate or turn 'OFF' the water heater at the electricity supply� 2� Close the cold water isolation valve at the inlet to the water heater� Rinnai EHFA/EHFD HW IM...
Braeside, Victoria 3195 For further information visit: www.rinnai.com.au Rinnai has a Service and Spare Parts network with personnel who are fully trained and equipped to give the best service on your Rinnai appliance. If your appliance requires service, please call our National Help Line. Rinnai recommends that this appliance be serviced every year.