Operation & Installation Manual ® ‘HOTFLO ’ (HFE Series) Mains Pressure Vitreous Enamel Electric Storage Water Heater This appliance shall be installed in accordance with: • • • • • Manufacturer’s Installation Instructions Municipal Building Codes AS/NZS 3000 Wiring Rules AS/NZS 3500.
REGULATORY INFORMATION Your Rinnai Hotflo Mains Pressure Vitreous Enamel Electric Storage Water Heater has been certified by relevant plumbing and electrical authorities and the details are shown on data plate. This appliance must be installed correctly by an authorised person and must conform to location regulations. The installation must also comply with the instructions supplied by Rinnai. Please keep this instruction booklet in a safe place for future reference.
TABLE OF CONTENTS REGULATORY INFORMATION.................................................................................................................................. i WARNINGS ................................................................................................................................................................. i Hydrogen Gas ........................................................................................................................................................
SAFETY Hydrogen Gas If the hot water heater is not used for two weeks or more, a quantity of hydrogen gas, which is highly flammable, may accumulate in the water heater. To dissipate this safety, it is recommended that a non electrically operated hot tap be turned on for several minutes at a sink, or bath, but not at dishwasher or other appliance. During this procedure there must be no smoking, open flame or any electrical appliance operating nearby.
IMPORTANT INFORMATION SAFETY DEVICES For safe operation this water heater is fitted with a combination Pressure & Temperature Relief (PTR) Valve, a thermostat and an over-temperature cutout for each heating element. • DO NOT tamper with or remove safety devices. WARNING • DO NOT operate this water heater unless all safety devices are fitted and in working order. • DO NOT block or seal the PTR Valve and drain pipe. ANODE The water heater is fitted with a sacrificial anode to extend it's life.
IMPORTANT INFORMATION REGULAR CARE Over flow tray and drain The overflow tray and drain (if fitted) should be periodically checked to ensure there are no blockages. Pressure and Temperature Relief (PTR) Valve This valve is located near the top of the water heater and is essential for safe operation. It is normal for the valve to release a small quantity of water through the drain line during heating.
SERVICING AND REPAIR Our Servicing network personnel are fully trained and equipped to give the best service on your Rinnai appliance. If your appliance needs service, ring one of the service contact numbers on the back of this booklet. The pressure and temperature relief valve and expansion control valve must be checked for performance or replaced by an authorised person at intervals not exceeding 5 years or more frequently in areas where the water is classified as scaling water (see ‘Water Quality’).
SERVICING AND REPAIR WATER HEATER VALVES DISCHARGING EXCESSIVELY Pressure and Temperature Relief (PTR) valve It is normal and desirable that this valve allows a small quantity of water to be discharged during the heating cycle. If it discharges more than a bucket of water during a 24 hour period or discharges continuously there may be another problem. If the valve dribbles continuously, try easing the valve gear for a few seconds as described under 'Regular Care'.
GENERAL INSTALLATION This appliance shall be installed in accordance with: • Manufacturer's Installation Instructions • AS/NZS 3500.4 • AS/NZS 3000 Wiring Rules • Local Plumbing, Water and Electrical Authority Regulations • Municipal Building Codes • Any other relevant Statutory Regulations THIS APPLIANCE IS NOT SUITABLE FOR USE AS A DOMESTIC SPA POOL OR SWIMMING POOL HEATER.
GENERAL INSTALLATION KITCHEN TEMPERATURE LIMITING DEVICE (TLD) NON TEMPERED SUPPLY PTR VALVE (Supplied) 850 kPa or 1000 kPa LAUNDRY PLV (SUPPLIED) 500 kPa NON RETURN VALVE NON RETURN VALVE TEMPERATURE LIMITING DEVICE (TLD) BATHROOM TEMPERED Supply ISOLATING VALVE ENSUITE NON RETURN VALVE WATER HEATER (OR) ISOLATING VALVE NON RETURN VALVE ISOLATING VALVE NON RETURN VALVE COLD Supply COLD Supply PLV 500 kPa (Not Supplied) PLV ECV Water Heater ECV(Not Supplied) 700 kPa or 850 kPa Valves wi
GENERAL INSTALLATION UNTEMPERED SUPPLY KITCHEN PTR VALVE (Supplied 850 kPa or 1000 kPa) LAUNDRY TLD BATHROOM FLOW+RETURN PUMP ENSUITE NON RETURN VALVE ISOLATING VALVE WATER HEATER ISOLATING VALVE NON RETURN VALVE COLD Supply PLV 500 kPa (Not Supplied) ECV (Not Supplied) 700 kPa or 850 kPa NOTE WARNING Valves with pressure ratings other than specified are unsuitable and must not be used. 1. 2. This schematic is an example only, variations may also be suitable.
GENERAL INSTALLATION WATER QUALITY The water quality of most public supplies is suitable for the water heater. Water quality from bore wells is generally unsuitable. Refer to the ‘Warranty Conditions’ for water quality parameters and how they affect warranty. If in doubt about water quality, have it checked against the parameters listed in the warranty conditions.
GENERAL INSTALLATION Electrical Supply Electrical connection must be carried out by a qualified person and in accordance with AS 3000 'Wiring Rules' and local authority requirements.
GENERAL INSTALLATION PLUMBING CONNECTIONS Refer to Figure 1 for the location and specification of each plumbing connection to the water heater. The water heater has 'dual handed' PTR valve, cold supply and hot outlet connections. The brass plugs (supplied) are used to plug unused connections. NOTE Models: HFE25S / HFE50S have foam caps supplied. These MUST be used to cover up these brass plugs to prevent heat losses. PTR Valve Connection The PTR Valve must be fitted before the water heater is operated.
GENERAL INSTALLATION SINGLE ELEMENT 3 ST1204113 TWIN ELEMENT 1 3 4 ST2207233 1 4 5 2 5 2 TOP ELEMENT Earth Active - A Neutral - N 3 ST1204113 1 4 5 2 BOTTOM ELEMENT Earth Continuous - A Off Peak - A Neutral - N Figure 6 - Single and Twin Elements Wiring Diagrams Thermostat Setting The thermostat is adjustable from 60°C to 75°C. Turning the adjustment knob anticlockwise decreases the temperature setting and turning it clockwise increases the temperature setting.
COMMISSIONING Commissioning and draining activities must be carried out by an authorised person. To fill and turn ‘ON’ the water heater • WARNING Do not switch on the electric power supply until the water heater is filled completely with water. • Open all hot water taps in the house, including the shower. • Open the cold water isolation valve to water heater. Air will now be forced out of the taps. • Close each tap when water runs freely without air bubbles.
SPECIFICATIONS B C OUTLETS P&TR A D G INLETS E F Figure 7 - Dimensional Drawing All Dimensions are in (mm) Models A B C D E F 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 - HFE200S 1825 590 515 1605 225 155 - HFE250SSL 1475 700 625 1215 90 50 - HFE315SSL 1762 700 625 1430 90 50 - HFE400S 1820 760 685 151
Rinnai Australia HFE160S18 HFE160S24 HFE160S36 HFE160S48 - 15 3600 4800 3600 4800 315 400 400 250 315 3600 4800 1800 2400 3600 4800 2400 3600 4800 3600 4800 3600 4800 3600 4800 3600 4800 3600 4800 3600 4800 1800 2400 3600 4800 1800 2400 3600 4800 1800 2400 3600 4800 1800 2400 3600 4800 1800 2400 3600 4800 1800 2400 3600 4800 850 1000 850 1000 700 850 Heating Expansion Cylinder PTR Valve Elements Control Vale Rated Pressure Available (ECV) Pressure Rating Watts (W) Pressure (kPa) (kPa)
THIS PAGE IS INTENTIONALLY BLANK Rinnai Australia - 16 - HOTFLO Electric Storage Tanks Operating/Installation Manual
THIS PAGE IS INTENTIONALLY BLANK Rinnai Australia - 17 - HOTFLO Electric Storage Tanks Operating/Installation Manual
CONTACT INFORMATION Australia Pty. Ltd. Internet: www.rinnai.com.au E-mail: enquiry@rinnai.com.au ABN 74 005 138 769 Head Office National Help Line Tel: 1300 555 545* Fax: 1300 555 655* Spare Parts & Technical Info Tel: 1300 366 388* Fax: 1300 300 141* 10-11 Walker Street, Braeside, Victoria 3195 P.O. Box 460 Tel: (03) 9271 6625 Fax: (03) 9271 6622 *Cost of a local call higher from mobile or public phones.
