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Rinnai 19 

HOTFLO (HFE Series) Electric Storage Water Heater OIM

ELECTRICAL SUPPLY

WARNING

Mustbeinstalled,maintainedandremovedbyauthorisedpersonsinaccordancewithAS/NZS

3000 and all other relevant local regulations and municipal building codes including OH&S

requirements.

Ensureelectricwiringisinstalledproperly.Improperinstallationmaycausemalfunction,fire,or

electric shock.

Theunitmustbeearthedfollowinglocalelectricalcodes.

A water heater 

NOT

 fitted with a power cord and plug 

MUST

have the heating element connected to an independent, 

fused, AC 240V 50 Hz power supply with an isolating switch installed at the switch board, which shall effectively 

isolate all active supply conductors from the circuit and means for disconnection must be incorporated in the fixed 

wiring in accordance with the wiring rules� 

Ensure the premises wiring to the system is capable of withstanding the system electrical load (refer to Specifications 

- Table 1 for electrical load details)� 
The power supply to a single element model can be Off-Peak (overnight), Extended Off-Peak (overnight and day), 

or Continuous (day)� 
The power supply to a twin element model should be Off-Peak (overnight) to bottom heating element and 

Continuous to the top heating element�
Check the available tariffs with the local electricity supplier� The Off-Peak (overnight) is usually the most economical 

for the customer�

Electrical Connections

WARNING

Thewaterheater

MUST BE

filledwithwaterpriortoconnectiontothepowersupply.

WARNING

Electricalconnection

MUST BE

carriedoutbyaqualifiedpersonandinaccordancewithAS/

NZS3000'WiringRules'andlocalauthorityrequirements
Disconnect all power prior to installation and commissioning. This appliance is designed for

singlephase240Volts,ACmainselectricaloperation.

All electrical connections 

MUST BE

madebyanauthorisedpersonandmustcomplywithall

localelectricalsupplyregulationsandAS/NZS3000.

NOTE

Thepremiseswiringtotheheatermustbecapableofwithstandingtheapplianceload.

Electrical access is via a 20 mm hole beneath the element cover for mounting with an approved weatherproof 

electrical conduit nipple. For entry to the element cover remove the two fixing screws.

Connect all ACTIVE and NEUTRAL wires in accordance with the wiring diagram which is also included at the rear 

of the element access cover. Ensure the incoming EARTH wire is securely fixed to the earth post provided on the 

heater case. 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�

INSTALLATION

Summary of Contents for HOTFLO HFE125S18

Page 1: ...egulation All local regulatory requirements including all local OH S requirements This appliance must be installed maintained and removed by a Qualified Person For continued safety of this appliance i...

Page 2: ...Rinnai 2 HOTFLO HFE Series Electric Storage Water Heater OIM This page is intentionally blank...

Page 3: ...ns 12 Installation Methods 13 Hot Water Plumbing System Example No Temperature Limiting Device 13 Hot Water Plumbing System Example With Temperature Limiting Device 13 Hot water plumbing system Exampl...

Page 4: ...Rinnai 4 HOTFLO HFE Series Electric Storage Water Heater OIM This page is intentionally blank...

Page 5: ...rules and regulations For continued safety of this appliance it must be installed operated and maintained in accordance with the manufacturer s instructions This appliance is heavy use 2 people or mec...

Page 6: ...trades person WARNING The thermostat setting must only be adjusted by an Electrician or other suitably qualified trades person The access cover to the element and thermostat must only be removed by an...

Page 7: ...by a qualified person It is normal for the PTR valve to release a small quantity of water through the drain pipe during heating If the valve dribbles or leaks continuously try easing the valve gear fo...

Page 8: ...eated during the set period and stored The Off Peak supply is usually cheaper Electricity supply types and tariffs vary according to the local electricity authority Twin Element Model A vitreous ename...

Page 9: ...may need to be increased Contact your installer or Rinnai to discuss adjusting the thermostat No water from the hot tap Restriction in the hot tap or failure of the cold water supply to the heater Che...

Page 10: ...D WARNING LABELS LEFT COLD WATER INLET Connection RP 3 4 20mm LEFT HOT WATER OUTLET Connection RP 3 4 20mm use a union connection and Insulate Hot water pipe PTR VALVE DRAIN PIPE Supplied by Installer...

Page 11: ...y F Electrical Entry Upper Element G HFE25S 452 490 415 297 153 80 HFE50S 694 490 415 524 158 80 HFE80S 900 590 515 683 225 155 HFE125S 1245 590 515 1020 225 155 HFE160S 1530 590 515 1310 225 155 HFE2...

Page 12: ...4 HFE160T36 HFE160T48 160 1800 2400 3600 4800 1800 2400 3600 4800 HFE200S24 HFE200S36 HFE200S48 200 2400 3600 4800 HFE250SSL36 HFE250SSL48 250 3600 4800 HFE250T36 HFE250T48 250 3600 4800 3600 4800 HFE...

Page 13: ...E LIMITING DEVICE KITCHEN LAUNDRY ENSUITE BATHROOM TEMPERED Supply NON TEMPERED SUPPLY NON RETURN VALVE TEMPERATURE LIMITING DEVICE TLD NON RETURN VALVE NON RETURN VALVE PLV 500 kPa Not Supplied with...

Page 14: ...t Supplied with all models ECV Not Supplied 700 kPa or 850 kPa ISOLATING VALVE PTR VALVE Supplied 850 kPa or 1000 kPa WATER HEATER COLD Supply ISOLATING VALVE NON RETURN VALVE FLOW RETURN PUMP ISOLATI...

Page 15: ...0 kPa WATER HEATER COLD Supply NON RETURN VALVE FLOW RETURN PUMP ISOLATING VALVE UNTEMPERED SUPPLY TLD CAUTION Valves with pressure ratings other than specified are unsuitable and MUST NOT be used For...

Page 16: ...n occur as a result of water leakage the water heater MUST BE installed with a safe tray overflow tray and drain Construction installation and draining of the safe tray MUST comply with local regulato...

Page 17: ...s under Installation Methods WARNING Valves with pressure ratings other than specified MUST NOT be used An isolation valve and non return valve MUST BE fitted in the cold water supply to the water hea...

Page 18: ...BE fitted to the valve outlet in accordance with the section Relief Valve Drain Lines on the bottom of page 18 The valve body MUST BE insulated in accordance with local regulatory requirements and AS...

Page 19: ...g element Check the available tariffs with the local electricity supplier The Off Peak overnight is usually the most economical for the customer Electrical Connections WARNING The water heater MUST BE...

Page 20: ...fore removing the access cover to the element and thermostat The access cover to the element and thermostat MUST ONLY BE removed by an Electrician or other suitably qualified trades person The thermos...

Page 21: ...Air will now be forced out of the taps 3 Close each tap when water runs freely without air bubbles 4 Check all plumbing connections and pipe work for water leaks 5 Connect the water heater to the ele...

Page 22: ...ce please call our National Help Line Rinnai recommends that this appliance be serviced every year Head Office 100 Atlantic Drive Keysborough VIC 3173 P O Box 460 Braeside Victoria 3195 Product Sales...

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