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18 

 

CONNECTIONS – PLUMBING 

 

IMPORTANT: 

When installing a new water heater to an old or existing system, it is a requirement that the system 

and its equipment be thoroughly inspected and if necessary, drained and flushed with clean fresh water, before the 
new water heater is connected. Failure to do this may cause blockages and/or damage to the water heater which is 
not covered by warranty. 

IF THERE IS ANY DOUBT ABOUT THE SYSTEM, DRAIN AND FLUSH AS A PRECAUTION. 

CONNECTION SIZES 

 

147 On/Off 

147 Hi/Lo 

Inlet water connection 

RP1¼/32 

RP1¼/32 

Outlet water connection 

RP1¼/32 

RP1¼/32 

Relief valve connection 

RP¾/20 

RP¾/20 

Gas inlet 

RP¾/20 

RP½/15 

 
All  plumbing  work  must  be  carried  out  by  a  qualified  person  and  in  accordance  with  the  National  Plumbing 
Standard AS/NZS 3500.4 and local authority requirements. 

All  gas  work  must  be  carried  out  by  a  qualified  person  and  in  accordance  with  the  Australian  Gas  Installations 
Standard AS/NZS 5601 and local authority requirements. 

WATER INLET AND OUTLET 

All  pipe  work  must  be  cleared  of  foreign  matter  before  connection  and  purged  before  attempting  to  operate  the 
water heater. All olive compression fittings must use brass or copper olives. Use thread sealing tape or approved 
thread sealant on all fittings. 

An  isolation  valve  and  non-return  valve  must  be  installed  on  the  cold  water 
line to the water heating system. An acceptable arrangement is shown in the 
diagram opposite for a water heating application. 

A disconnection union must always be provided at the inlet and outlet on the 
water heater to allow for disconnection of the water heater. 

Do not reduce the pipe work size and water heater water connections without 
allowing for friction loss which will occur. Low water flow will cause damage to 
the water heater and system components. 

GAS INLET 

The gas connection  is made  at the right hand end  of the  water heater for 109  Models and at  the inlet of the gas 
control  for  147  models.  The  pipe  work  must  be  cleared  of  foreign  matter  before  connection  and  purged  before 
attempting to light the water heater. An isolation valve and disconnection union must be used to allow servicing and 
removal of the water heater. 

Refer  to the  Gas  Installations  Standard  AS/NZS 5601  for  the  correct method  of  sizing  the  gas  supply  pipe  to the 
water heater. 

 WARNING:

 Before pressure testing the gas supply system always isolate and disconnect the water heater after 

the isolating cock to prevent the risk of serious damage to the gas control. Warranty does not cover damage of any 
nature resulting from failure to observe this precaution. Refer to rating label for gas types and pressures. 

Ensure the gas line is also purged at the union connection to the water heater. If this procedure is not followed, a 
retry lockout may result on initial start up. 

CAUTION: 

Care is necessary when tightening fittings into the gas control. The gas control casting may crack if the 

fittings  are  over  tightened.  Cracked  castings  are  not  covered  under  warranty.  Damaged  gas  controls  must  be 
replaced. 

PIPE SIZES 

The pipe sizing for water heating and mechanical heating systems should be carried out by persons competent to 
do so, choosing the most suitable pipe size for each individual application. Reference to the technical specifications 
of the water heater and local regulatory authority requirements must be made. 
 

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Содержание B0147

Страница 1: ...de and Installation Instructions Raypak Water Heaters Models Types B0147 NCO NCH PCO PCH This water heater must be installed and serviced by a qualified person Please leave this guide with a responsib...

Страница 2: ...to install this water heater and ask for your Compliance Certificate Warning Upon completion of the installation and commissioning of the water heater leave this guide with the householder or a respo...

Страница 3: ...R HEATER 4 HOW YOUR WATER HEATER WORKS 7 SAVE A SERVICE CALL 9 REGULAR CARE 11 INSTALLATION 12 CONNECTIONS PLUMBING 18 CONNECTIONS ELECTRICAL 21 LOCATION OF CONTROLS 26 SAFETY PRECAUTIONS 27 COMMISSIO...

Страница 4: ...ble for the application and will not cause scald injury We recommend and it may be required by regulations that an approved temperature limiting device be fitted into the hot water piping to the bathr...

Страница 5: ...Propane model A Propane model is designed to operate on Propane only The use of Propane Butane mixture such as automotive LPG fuel in a Propane model is unsafe and can cause damage to the water heater...

Страница 6: ...LONG WILL THE WATER HEATER LAST The water heater is supported by a manufacturer s warranty refer to page 43 There are a number of factors that will affect the length of service the water heater will p...

Страница 7: ...m inlet pressure for the storage tanks a pressure limiting valve must be fitted In mechanical and process heating applications the system pressure must not exceed the value shown in the table on page...

Страница 8: ...n to supply gas to the main burner If the main burner fails to ignite the ignition system will lock out 147 On Off Models The water heater utilises an automatic burner ignition system incorporating an...

Страница 9: ...g Is the relief valve discharging too much water Refer to Pressure Relief Valve Running on page 10 Thermostat setting Ensure the thermostat setting is appropriate You may choose to have your installer...

Страница 10: ...indicate the mains water pressure sometimes rises above the designed pressure of the water heater Ask your installing plumber to fit a pressure limiting valve WARNING Never replace the relief valve w...

Страница 11: ...failing Warning Exercise care to avoid any splashing of water as water discharged from the drain line will be hot Stand clear of the drain line s point of discharge when operating the valve s lever If...

Страница 12: ...ure relief valve may be supplied inside the water heater casing This kit must be removed before the water heater is operated READ THESE INSTRUCTIONS IN FULL INSPECTION OF EQUIPMENT Check the water hea...

Страница 13: ...uirements in AS NZS 5601 for water heaters installed in a garage an enclosed space and other locations Remember all local authorities have regulations about putting water heaters into roof spaces CLEA...

Страница 14: ...S NZS 5601 must be observed At least 500 mm between the top of the flue terminal and the eaves At least 1 500 mm horizontally between the flue terminal and the edge of any opening into the building me...

Страница 15: ...ng kPa 700 550 700 550 Mechanical Heating kPa Minimum Supply Pressure System water temperatures up to 65 C kPa 70 70 System water temperatures above 65 C kPa 120 120 Maximum Supply Pressure with ECV f...

Страница 16: ...valve or from another cold water line in the premises then a pressure limiting valve of an equal pressure setting may be required prior to the temperature limiting device REDUCING HEAT LOSSES WATER HE...

Страница 17: ...ENSIONS AND TECHNICAL DATA 147 Natural Gas Input MJ h 144 Output kW 32 Propane Gas Input MJ h 144 Output kW 32 Electrical Rating 240V 50 Hz Power W 50 Current A 0 21 Weight empty Kg 58 Flue Connection...

Страница 18: ...of the water heater Do not reduce the pipe work size and water heater water connections without allowing for friction loss which will occur Low water flow will cause damage to the water heater and sys...

Страница 19: ...Models 310 kPa 45 psi When the water heater is connected to a storage cylinder for water heating applications a correctly sized and pressure rated TPR valve MUST be fitted to the storage cylinder NOT...

Страница 20: ...s where thermostatic valves will vary the water flow a suitable by pass valve must be installed to maintain the correct flow rate Typical Mechanical Heating Installation WATER HEATING Where the water...

Страница 21: ...nd operation type refer to the table opposite For reasons of safety and economy we recommend that the thermostat is set at the lowest temperature that will provide sufficient hot water Discuss the the...

Страница 22: ...bridging wire between terminals 3 and 4 of the water heater terminal block and connect the wiring to the power flue across these two terminals refer to the diagram opposite and to the wiring diagrams...

Страница 23: ...CONNECTIONS ELECTRICAL 23 WIRING DIAGRAM 147 ON OFF MODELS...

Страница 24: ...CONNECTIONS ELECTRICAL 24 WIRING DIAGRAM 147 HI LO MODELS...

Страница 25: ...PTION MECHANICAL HEATING SYSTEMS NOTE When connecting additional controls the relays and timers etc must be located in an additional enclosure NOT fitted within the water heater For outdoor installati...

Страница 26: ...r Hi Lo type controls are typically used where the system load is variable e g hot water supplying radiator coils for room heating GAS CONTROL 2 On Off Models 147 On Off type water heaters are fitted...

Страница 27: ...loose fitting long sleeved clothing or disposable overalls Wear gloves and eye protection Consult Occupational Health and Safety Authorities for any further information AFTER HANDLING Rinse any expos...

Страница 28: ...Ensure that the main gas isolation valve is closed OPERATIONAL CHECKS Turn on the water heater and circulation pump and verify the flow switch operation if fitted refer to To Turn on the Water Heater...

Страница 29: ...at the inlet to the water heater Plug in the power supply cord at the power outlet Switch on the electrical supply at the power outlet to the water heater NOTE If the water heater is correctly instal...

Страница 30: ...gas supply are operating GAS PRESSURE ADJUSTMENT 147 On Off Models To adjust the burner pressure on a water heater with a Honeywell Smart Valve proceed as follows Remove the screw and washer from the...

Страница 31: ...g label refer to Location of Controls on page 26 NOTE To ensure the burner is operating at high fire it may be necessary to increase set point on the thermostat refer to Temperature Control on page 32...

Страница 32: ...s are not delivered to a bathroom ensuite or other ablution or public area THERMOSTAT ADJUSTMENT 147 ON OFF MODELS ELIWELL IC902 THERMOSTAT 147 HI LO MODELS ELIWELL IC915 THERMOSTAT The instrument has...

Страница 33: ...d PROGRAMMING MENU To enter the Programming menu press the SET key for more than 5 seconds If specified the access PASSWORD will be requested parameter PA1 and the label of the first folder will follo...

Страница 34: ...SE C F 55 302 20 Heat Cool mode HC H C H Ont Oft Delay time relay on dOn sec 0 250 0 Delay time relay off dOF min 0 250 0 dbi min 0 250 0 Delay time at start up OdO min 0 250 0 dis Key pad lock LOC y...

Страница 35: ...must elapse between two successive switch ons of the regulator 0 250 0 dE1 Delay before switch off The indicated time must elapse between switch off request and the switch off of the regulator PLEASE...

Страница 36: ...0 250 1 LOC DISPLAY folder with diS label keyboard LOCk set and keys Keyboard locking However you can enter parameter programming modify them along with the status of this parameter in order to allow...

Страница 37: ...ll data in the copy card PLEASE NOTE using Fr parameter copy card formatting the data within the copy card will be lost permanently The operation cannot be cancelled After using the copy Card device t...

Страница 38: ...by removing the front cover loosen one Phillips head screw and turning the adjuster The high limit is reset by pressing the red button on the front of the thermostat It may be necessary to allow the...

Страница 39: ...ilot flame Yellow flames indicate some restriction of the combustion air openings or incorrect burner gas pressure setting A bright orange luminous flame is not normal and can cause sooting under prol...

Страница 40: ...ssure relief valve In a scaling water supply calcium carbonate is deposited out of the water onto any hot metallic surface Where the saturation index exceeds 0 80 warranty does not apply to a copper h...

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Страница 43: ...be the owner s responsibility 2 5 Where the water heater is installed in a position that does not allow safe or ready access the cost of that access including the cost of additional materials handling...

Страница 44: ...ish to make a claim under this warranty you need to a Contact Rheem on 131031 and provide owner s details address of the water heater a contact number and date of installation of the water heater or i...

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