Rinnai CCSE3302B-36 Installation Guide

Operation Installation Manual

Close Coupled

Solar Hot Water Systems -

Enduro SP200B and

Excelsior SP200BEX Collectors

This system shall be installed in accordance with:

• Manufacturer’s Installation Instructions

• Current AS/NZS 3500

• All applicable local rules and regulations including local OH&S requirements

This system must be installed, commissioned and serviced by an Authorised Person.

All Rinnai gas products

The solar hot and solar cold pipes between the solar storage tank and the solar collector(s) must be copper tube. Fittings used to join these pipes must use metallic materials to acheive sealing. Plastic pipe and fittings must not be used as they are not suitable

IMPORTANT

Not suitable as a pool or spa heater.

for the high temperatures and pressures that may occur. Failure of plastic pipe and/or fittings can lead to the release of high temperature water and can cause sever flooding and water damage.

are A.G.A. certified.

SAI Global

W169

AS/NZS 2712

Lic No.1849

SAI Global

Issue

3

TABLE OF CONTENTS

Warnings and Important Information 4

Safety and Regulatory Information ��4 Scald Hazards ��5 Operation Principle ��6 Safety Devices ��7 Excessive Discharge from Safety Devices ��7 Gas Boosters ��8 Hydrogen Gas ��8 Water Temperature ��8 Turning Off the Water Heating System ��8 Turning On the Water Heating System ��8 Water Quality ��9 Draining and Filling the Water Heating System ��9 Maintenance and Regular Care ��9 Servicing and Repair ��9

Save a Service Call 10

Specications 12

General ��12 Cylinder Weights ��12 System Dimensions - Stainless Steel Cylinders ��13 System Dimensions - Glass Lined Cylinders ��14 Solar Collectors ��15 Gas Boosters ��16

Installation - All Systems 17

Regulations and Occupation Health and Safety (OH&S) ��17 Location ��17 Water Pipes, Fittings and Insulation ��18 Water Supply ��18 Hot Water Delivery Temperature ��19 Valves and Fittings ��19 System Orientation and Inclination ��20 Roof Mounting Options ��21 Standard Installation ��24 Roof pitch greater than 30° ��28 Framed Installations - Cyclone Frame ��29 Framed Installations - Flat, Reverse and Side Pitch ��29 Connecting Fittings to Collector ��31

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TABLE OF CONTENTSTABLE OF CONTENTS

180 Litre SS Cylinder with 1 SP200B or SP200BEX Collector - BIKS180CCT01C ��32 180 Litre SS Cylinder with 2 SP200B or SP200BEX Collectors - BIKSUNICCT23C ��34 330 Litre SS Cylinder with 2 SP200B or SP200BEX Collectors - BIKS330CCT02C ��36 330 Litre SS Cylinder with 3 SP200B or SP200BEX Collectors - BIKSUNICCT23C ��38 200 Litre Glass Lined Cylinder with 1 SP200B or SP200BEX Collector - BIKV200CCT01C ��40 200 Litre Glass Lined Cylinder with 2 SP200B or SP200BEX Collectors - BIKV200CCT02C ��42 330 Litre Glass Lined Cylinder with 2 SP200B or SP200BEX Collectors - BIKV330CCT02C ��44 330 Litre Glass Lined Cylinder with 3 SP200B or SP200BEX Collectors - BIKV330CCT03C ��46

Installation - Gas Boosted Systems 48

Gas Booster Location ��48 Gas Supply ��48 Hot Water Delivery Temperature ��48 SMARTSTART® ��48 System Using Rinnai SmartStart ��49 Gas Booster Clearances ��50 Installation Procedure ��51 Filling the System ��52 Pre Solar Heating Checks ��52 Solar Heating ��53 Finishing the Installation ��53 Draining Instructions ��53

Installation - Electric Boosted Systems 54

Installation Procedure ��54 Filling the System ��55 Pre Solar Heating Checks ��56 Solar Heating ��56 Finishing the Installation ��56 Draining Instructions ��56

Installation Record 57 Notes 58

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WARNING

WARNINGS AND IMPORTANT INFORMATION

SAFETY AND REGULATORY INFORMATION

DO NOT operate this system before reading the manufacturers instructions� This appliance must be installed, commissioned and serviced by an authorised person in accordance

with all applicable local rules and regulations� Access covers of water heating system components will expose 240V wiring and MUST only be removed

by an authorised person� This appliance is not intended for use by persons (including children) with reduced physical, sensory or

mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety�

For continued safety of this appliance it must be installed, operated and maintained in accordance with the manufacturer’s instructions�

Children should be supervised to ensure they DO NOT play with the appliance� Any power leads from the water heater system components MUST be plugged into an external

weatherproof electrical outlet� If the power supply cord of any water heating components is damaged, it MUST BE replaced by an authorised person in order to avoid a hazard, using genuine replacement parts available from Rinnai� Take care not to touch the power plugs with wet hands�

Care should be taken not to touch the pipe work as it may be HOT! The pipes between the solar collectors and storage cylinder MUST BE copper or an equivalent metallic

material specied by Rinnai. Plastic pipe is NOT suited to the water temperatures and pressures that

may occur in the system� DO NOT place articles on or against this appliance�

DO NOT store chemicals or ammable materials near this appliance.

DO NOT operate with collectors or covers removed from this appliance�

NEVER use a ammable spray such as hair spray, lacquer, paint, etc near this unit as this may cause a re.

NOTICE TO VICTORIAN CONSUMERS

This appliance must be installed by a person licensed with the Victorian Building Authority�

Only a licensed person will have insurance protecting their workmanship�

So make sure you use a licensed person to install this appliance and ask for your Compliance Certicate.

For Further information contact the Victorian Building Authority on 1300 815 127��

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WARNINGS AND IMPORTANT INFORMATION

SCALD HAZARDS

HOT WATER CAN CAUSE SCALDS. CHILDREN, DISABLED, ELDERLY AND THE INFIRM ARE AT THE HIGHEST RISK OF BEING SCALDED. FEEL WATER TEMPERATURE BEFORE BATHING OR SHOWERING. SCALDS FROM HOT WATER TAPS CAN RESULT IN SEVERE INJURIES TO YOUNG CHILDREN. SCALDS OCCUR WHEN CHILDREN ARE EXPOSED DIRECTLY TO HOT WATER WHEN THEY ARE

PLACED INTO A BATH WHICH IS TOO HOT.

ALWAYS......

Test the temperature of the water with your elbow before placing your child in the bath, also carefully feel water before bathing or showering yourself.

Supervise children whenever they are in the bathroom. Make sure that the hot water tap is turned off tightly.

CONSIDER.....

Installing child proof tap covers or child resistant taps. Both approaches will prevent a small hand being able to turn on the tap.

Installing tempering valves or thermostatic mixing valves which reduce the hot water temperatures

deliveredtothetaps.Yourlocalplumbingauthoritymayalreadyrequirethatthesebetted.Contactour

installer or local plumbing authority if in doubt.

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.

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WARNINGS AND IMPORTANT INFORMATION

OPERATION PRINCIPLE

Close coupled systems are designed to have the solar collectors on the roof and the storage cylinder above the collectors, all mounted using available mounting brackets� Electric and gas boosted models are available� The system comprises of a hot water storage cylinder and solar collectors� Close coupled solar systems use the thermosyphon principle to circulate the water through the collectors and then to the storage cylinder without the need for a pump�

Supplementary heating is provided if insufcient heat is available from sun (such as during cloudy or rainy weather

or during winter months) either via an electric heating element located inside the storage cylinder or via a gas booster located external to the storage cylinder� The following diagrams illustrates the systems set up for electric and gas boosting�

COLD WATER SUPPLY

HOT WATER DELIVERY

STORAGE CYLINDER

GAS BOOSTER

GAS SUPPLY

COLLECTORS

COLD WATER SUPPLY

HOT WATER DELIVERY

STORAGE CYLINDER

COLLECTORS

Stainless Steel Gas Boosted Solar Hot Water System Stainless Steel Electric Solar Hot Water System

STORAGE CYLINDER

COLD WATER SUPPLY

HOT WATER DELIVERY

GAS BOOSTER

GAS SUPPLY

COLLECTORS

COLD WATER SUPPLY

HOT WATER DELIVERY

COLLECTORS

Glass Lined Gas Boosted Solar Hot Water System Glass Lined Electric Solar Hot Water System

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WARNING

WARNINGS AND IMPORTANT INFORMATION

SAFETY DEVICES

The water heating system is supplied with various safety devices including temperature sensors, overheat sensors and switches and a Pressure & Temperature Relief (PTR) valve� These devices must not be tampered with or

removed. The water heating system must not be operated unless each of these devices is tted and is in working

order�

DO NOT tamper with or remove safety devices.

DONOToperatethewaterheaterunlessallsafetydevicesarettedandinworkingorder.

DO NOT block or seal the PTR Valve and drain pipe.

Pressure & 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�

However, continuous leakage of water from the valve and its drain line may indicate a problem with the water heater�

Twist cap until w ater flows from drain line

Lift lever until w ater flows from drain line (Lower lever gently!)

Never block the outlet of the PTR valve or it’s drain line for any reason. The easing gear must be operated at least every 6 months to remove lime deposits and verify that it is not blocked. Failure to do this may result in the water heater failing.

If the valve does not discharge water when the easing gear lever is opened, or does not seal again when the easing gear is closed, attendance by an authorised person must be arranged without delay. The PTR valve is not serviceable.

EXCESSIVE DISCHARGE FROM SAFETY DEVICES Pressure & 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 above� This may dislodge any foreign matter and alleviate the problem�

If the valve discharges at high ows, especially at night, it may be as a result of the water pressure exceeding the design pressure of the water heater. Ask your installer to t a Pressure Limiting Valve (PLV).

NEVERreplacethePTRvalvewithonewhichhasahigherpressureratingthanisspeciedfor

your water heater.

Expansion Control Valve (ECV) - if tted

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 leaks continuously, try easing the valve gear for a few seconds� This may dislodge any foreign matter and alleviate the problem� If this does not alleviate the problem contact Rinnai�

Operate the easing gear regularly to remove any lime deposits and to verify that it is not blocked�

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IMPORTANT

WARNINGS AND IMPORTANT INFORMATION

GAS BOOSTERS

Do not touch the ue outlet or do not insert any objects into the ue outlet.

•

Keep ammable materials, spray cans, fuel containers, trees, shrubs and pool chemicals etc, well clear of

•

the ue outlet.

Do not use the gas types other than those designated on the data plate� For example, do not use Propane/

•

Butane gas mixtures on appliances marked Propane Gas� Do not use Propane Gas on appliances marked as Natural Gas and vice versa�

•

HYDROGEN GAS

In the case of systems using a vitreous enamel lined cylinder, if the hot water unit is not used for two weeks or

more, a quantity of hydrogen gas, which is highly ammable, may accumulate in the water heater. To dissipate this

safely, it is recommended that a non electrically operated hot tap be turned on for two minutes at a sink, basin, or

bath, but not a dishwasher or other appliance. During this procedure there must be no smoking, open ame or any

electrical appliance operating nearby � If hydrogen is discharged through the tap, it will probably make a sound like air escaping�

WATER TEMPERATURE

The water gets heated by the solar energy contributed from the sun and heats the water until the water at the base of the storage cylinder reaches approximately 65°C� At this time water at the hot outlet can be up to 88°C� Continued heating is prevented by the ‘No Load’ protection, a Thermo-arrestor (TA) valve that prevents water passing from the cylinder to the collectors� During periods of low solar gain, supplementary heating occurs�

To meet Australian regulatory requirements, supplementary heating must be operational.

TURNING OFF THE WATER HEATING SYSTEM

If you plan to be away for only a few nights, we suggest you leave the water heating system switched on� If it is necessary to switch off the water heater, do so as outlined below:

Electric Boosted Systems

Switch off the electrical supply to the supplementary heating element� The switch is usually marked and

•

located in the electricity meter box of the dwelling�

Gas Boosted systems

Switch off the electric supply to the gas booster�

•

TURNING ON THE WATER HEATING SYSTEM

Electric Boosted system

Switch on the electric supply to the supplementary heating element(s)� The switch is usually marked and

•

located in the electricity meter box of the dwelling�

Gas Boosted systems

Switch on the electrical supply to the gas booster�

•

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WARNINGS AND IMPORTANT INFORMATION

WATER QUALITY

The water quality of most public supplies is suitable for the water heating system� The water quality from bore wells is generally unsuitable for the water heating system� Refer to the separate warranty document for water quality parameters and how they affect the warranty conditions� If in doubt about the water quality , have it checked against the parameters listed in the warranty document� The system is not suitable as a pool or spa heater�

DRAINING AND FILLING THE WATER HEATING SYSTEM

Draining or lling normally occur only during installation or servicing and must be carried out by an authorised

person�

MAINTENANCE AND REGULAR CARE

Operate the easing gear of the PTR as described in the section ‘Safety Devices’ on page 7�

SERVICING AND REPAIR

Our Servicing network personnel are fully trained and equipped to give the best service on your appliance� If your appliance needs service, ring one of the service contact numbers on the back of this booklet�

It is recommended that the system be serviced at least every 5 years� 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 classied as scaling water (refer to the supplied warranty booklet).

It is recommended that the sacricial anode tted to Glass Lined cylinders be inspected every 5 years or more

frequently in areas where there is a high incidence of water deposits� This does not apply to Stainless Steel cylinders� Anodes suited to hard and soft water, are available from Rinnai�

If the electric conduit, power supply cord or plug to the water heater is damaged, they must be replaced by an

authorised person in order to avoid a hazard. The power supply cord and plug (if tted) must be replaced by a

genuine replacement part available from Rinnai�

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SAVE A SERVICE CALL

Before contacting Rinnai for service, please follow the fault nding guide. If the problem persists or this information

doesn’t answer your questions, contact Rinnai on the phone number on the back of this manual Service call outs attending to any condition or fault that is not related to Rinnai product or components may be

chargeable�

INSUFFICIENT OR NO HOT WATER Excessive hot water

consumption

Incorrect solar system size The system may not have been adequately sized to suit the household� Temperature and pressure

relief valve / expansion control valve discharging water continuously

Booster heating not operating for electric systems

Gas booster not operating

orinsufcientgassupply

for gas boosted heating system

Booster thermostat settings Electric Boosted Systems:

NO WATER FROM THE HOT TAP Restriction in the hot tap

or failure of the cold water supply to the heater

Electric Boosted Systems:

Often people are surprised at the amount of hot water used, especially when showering� If the amount of hot water used during the day exceeds the storage capacity

of the cylinder, it is likely that there will be insufcient hot water.

Gas Boosted Systems:

Insufcient ow may occur if multiple outlets are in use at the same time and exceed the rated ow capacity of the gas booster. If so, reduce the number of outlets in use.

Consider discussing with your installer, tting water saving xtures and/or ow control

or pressure limiting valves to reduce consumption�

PTRValves&ECVValves(iftted)

It is normal and desirable that these valves allows a small quantity of water to be discharged during the heating cycle� If they discharges more than a standard bucket of water during a 24 hour period or discharges continuously there may be another problem

If water continuously dribbles from the valve, try easing the valve gear for a few seconds as described in This may dislodge any foreign matter and alleviate the problem�

If the valve discharges at high ows, contact your installer or Rinnai to discuss.

Electric boosted Systems:

Check to ensure the electric isolating switch(es) at the switchboard (usually marked “Hot water” or “water heater”) is switched ‘ON’�

Check to ensure that the electric fuses for hot water at the switchboard are intact If running on Off-Peak, discuss boosting times with electricity supplier�

Booster heating not operating or insufcient gas supply for gas boosted heating system

Gas Boosted Systems:

Check to ensure the power cord of the gas booster is plugged in and switched ‘on’� Check gas is available and the isolation valve is opened Close the hot tap and wait for 10 seconds and open it again� The hot tap must be

opened enough to ensure that the ow rate is sufcient for the gas booster to light.

Check if there is gas supply to other appliances in the rest of the house

Check the temperature of hot water delivered with a thermometer placed under the closest outlet (usually the kitchen sink) on a non-tempered hot water line

This test should be done early in the morning after overnight electrical boosting before any hot water is used� The temperature of the water delivered should be at least 55°C (allowing for heat losses in pipe work)

If this is not the case or the temperature may need to be increased� Contact your

installer or Rinnai to discuss adjusting the thermostat.

Check for water ow at the other hot taps and that the cold water isolation valve is fully

open

the section ‘Maintenance and Regular Care’ on page 9�

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SAVE A SERVICE CALL

HIGH ELECTRICITY OR GAS BILL Hot water usage patterns Electric Boosted Systems:

If using an off peak (overnight) boosted electrical system, the time of use of the water may affect whether heating is done by electric element or solar energy� This is because both solar heated water and electrically heated water are stored in the same cylinder� As the element is in the middle of the tank, half the tank can be heated each night by the booster element�

If the bulk of hot water is used in the morning, there will be cold water in the cylinder for the sun to heat during the day leading to lower electricity usage�

If the bulk of the hot water is used in the evening, the electric element will reheat the water overnight� In the morning there will only be half a cylinder of cold water for the sun to heat�

Consider changing your usage pattern to optimise solar energy usage�

High electricity cost Electric Boosted Systems:

The electricity tariff will determine the running costs of the system� Contact the

electricity supplier to conrm what these tariffs are.

Temperature and pressure relief valve / expansion control valve discharging water continuously

Lack of solar gain Reduced sunlight due to overcast weather in summer or low solar contribution in winter

CONDENSATION IN COLLECTORS Condensation in solar

collectors

NOISY SOLAR COLLECTORS Noise from solar collectors Occasionally on days of high solar gain, the water temperature in the collector may

WATER HAMMER Hot and cold water

plumbing in the premises

See entry under ‘Insufcient or No Hot Water’

will result in an increased dependence on electricity or gas boosting� Higher electricity or gas bills under these conditions, especially in winter, are normal�

If the solar collectors are shaded by trees or other objects, or the glass is dirty, the

effectiveness of the collectors is greatly reduced� Arrange for trimming of the trees or relocation of the solar collectors if the obstruction is permanent� Arrange for cleaning of the collector glass

Solar collectors incorrectly positioned will also severely affect the solar gain� Check that positioning and alignment of solar collectors is in accordance with the section ‘System Orientation and Inclination’ on page 20�

There is a small amount of ventilation between atmosphere and the internals of the

solar collector to ensure efcient operation. Under certain weather conditions, water

vapour naturally present in the air may condense on the inside surface of the collector glass� This does not affect the performance of the system� If you are concerned contact Rinnai to discuss�

become very high� The noise may be similar to a boiling kettle, or an expanding contracting metallic sound� The collector is designed to withstand these conditions, and no action is needed, unless it is extreme� Contact Rinnai to discuss if you have any concerns�

Contact your installer or a plumber to discuss checking the clipping of hot and cold water pipe work and install a pressure limiting valve or water hammer arrestor as required

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SPECIFICATIONS

GENERAL

Close Coupled hot water systems are specied according to the cylinder capacity, number of solar collectors and

boost type and capacity� Boost capacity for gas boosted system depends on the gas booster model selected� Boost capacity for electrically boosted systems depends on the power rating of the electric heating element�

Specications for the various components are shown below.

Solar ow and return connection: Rp ¾

PTR valve connection: Rp ¾ Cold inlet connection: Rp ¾ Hot outlet connection: Rp ¾ PTR valve setting 850 kPa Rating of PTR Valve supplied 10 kW Expansion Control Valve (ECV) setting

(supplied by installer if required) Max supply pressure with ECV 500 kPa Max supply pressure without ECV 700 kPa Pressure limiting valve rating

(supplied by installer if required)

Electric element power rating

1�8 or 4�8 kW available for stainless steel cylinders

4�8 kW available for glass lined cylinders

700 kPa

500 kPa

2�4 or 3�6 kW standard

CYLINDER WEIGHTS

Mass of Cylinder

(empty) Stainless steel 180 litre 40 kg 225 kg Stainless steel 330 litre 80 kg 412 kg Glass lined 200 litre 77 kg 277 kg Glass lined 330 litre 104 kg 434 kg

Mass of Cylinder

(lled)

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SYSTEM DIMENSIONS - STAINLESS STEEL CYLINDERS

SPECIFICATIONS

1450 1200

1050

2470 2090

2470 1200

2175

3600

2090

2175

3310

600

610

1960

2580 *

* This dimension may vary slightly depending on the installed spacing between the cylinders and the collectors�

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SPECIFICATIONS

SYSTEM DIMENSIONS - GLASS LINED CYLINDERS

1430

1140

1050

2470

1735

2470

1140

2175

3610

1735

2175

1960

2610 *

685

695

3310

* This dimension may vary slightly depending on the installed spacing between the cylinders and the collectors�

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SOLAR COLLECTORS

SPECIFICATIONS

ENDURO

SP200B

EXCELSIOR

SP200BEX

Type Flat plate Flat Plate

Waterways Copper Copper

Absorber Aluminium Copper

Selective Surface High Performance Sputtered Titanium Oxide

Maximum Operating Pressure 1000 kPa 1000 kPa

Casing Material Aluminium Aluminium Overall Dimensions

(L x W x H) (mm)

1960 x 1050 x 80 1960 x 1050 x 80

Weight empty (kg) 40 40

Water volume (litres)

1�95 2�0

Number risers 9 10 Potential Solar Output at

1�25 kW 1�25 kW

PTR relief conditions (kW)

The Rinnai solar hot water warranty booklet species the locations and

conditions that apply for at plate collectors to be warranted against frost

damage�

In locations where the warranty booklet species that frost valves must be

Frost Protection

used, they must be tted for warranty to apply. If frost valves are missing you must obtain them and t them. Failure to t frost valves will void any

warranty against frost damage�

For full warranty terms, conditions and exclusions refer to the Rinnai

warranty booklet for solar hot water�

This booklet is available at www�rinnai�com�au�

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SPECIFICATIONS

GAS BOOSTERS

Model Name S20 S26 S26i* S32*

Boost capacity at 20°C rise (l/min) 20 26 32 37

Boost capacity at 25°C rise (l/min) 16 26 26 32

Maximum rated ow (l/min) 20 26 32 37

Minimum water supply pressure for maximum rated

ow (kPa)

1

120 200 140 180

Frost protection Yes

Gas consumption maximum (MJ/h) 125 199 195 250

Gas consumption minimum (MJ/h) 14 14 16 21

Hot water delivery temperature (°C)

2

Dimensions - height x width x depth (mm) 530 x 350 x 194

70

600 x 470 x

244

Weight (kg) 15 21 21 29

1 Units will operate at lower pressures but the rated ow will not be achieved.

2 Gas boosters for Solar hot water applications must be set by Rinnai to deliver a minimum temperature of 70°C� Solar

Gas boosters will be marked as Solar� Units not marked ‘Solar’ MUST NOT be used, and will invalidate warranty� See warranty booklet for more details�

* These models are made to order�

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WARNING

INSTALLATION - ALL SYSTEMS

REGULATIONS AND OCCUPATION HEALTH AND SAFETY (OH&S)

Installation and commissioning must be performed by authorised persons� Solar systems must be installed in accordance with these instructions and all regulatory requirements

which exist in your area including those in relation to manual lifting, working at heights and on roofs� Applicable publications and regulations may include:

AS/NZS 5601 Gas Installations

•

AS/NZS 3500 National Plumbing and Drainage

•

AS/NZS 3000 Wiring rules

•

Building Codes of Australia (BCA)

•

Local Occupational Health and Safety (OH&S) regulations

•

This appliance is not suitable for use as a domestic spa pool or swimming pool heater� Solar collectors and cylinders are heavy and bulky items and are usually positioned on the roofs of

buildings� Australian State and Territories have a principal Occupational Health and Safety (OH&S) Act which contains requirements relating to the handling of large, bulky or awkward items and the prevention of falls from elevated surfaces� Persons installing solar collectors must be aware of their

responsibilities and be adequately trained and qualied, in accordance with local OH&S requirements.

LOCATION

System Location

These systems are only suitable for use on buildings up to 10 metres tall�

Select suitable areas of roof on which to install the solar collectors and cylinder� It is essential that the roof structure is suitable for the solar collector/cylinder combination and can support the weight of these items when full of water� It is the installers responsibility to ensure the roof can safely support the system and to visually check the roof, and if there is any damage that requires attention (such as cracked tiles etc�), to inform the owner� If this affects

the safe installation of any part of the system, installation should not proceed until the damage has been rectied.

Collectors should be positioned for optimum solar benet. Refer to the section ‘System Orientation and Inclination’

on page 20 for more information�

All system components must be in an accessible location. Sufcient clearances shall allow access to, and removal of, all serviceable parts. Ensure the PTR valve, drain lines, thermostats and elements have sufcient clearances

and are accessible for service and removal� The information on any data plates must also be readable� All electrically boosted solar hot water heating elements must be connected to an independent, fused, AC 240V 50

Hz power supply with an isolating switch installed at the switch board�

Gas Booster Location (where applicable)

The S20, S26 and S32 gas boosters are designed for outdoor installation only � As such, they must be located in an above ground open air situation with natural ventilation, without stagnant areas, where gas leakage & products of combustion are rapidly dispersed by wind and natural convection� If an internal model which has been converted

to a solar gas booster follow information supplied with the unit for location, mounting and ueing requirements.

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IMPORTANT

INSTALLATION - ALL SYSTEMS

WATER PIPES, FITTINGS AND INSULATION

The solar hot and solar cold pipes between the solar storage tank and solar collector(s) must be

copper tube. Fittings used to join these pipes must use metallic materials to achieve sealing. Plastic pipe and ttings must not be used as they are not suitable for the high temperatures and pressures that may occur. Failure of plastic pipe and/or ttings can lead to the release of high temperature water and can cause severe ooding and water damage.

All hot water pipework should be insulated with sealed polyethylene foamed or equivalent insulation to optimise

performance and energy efciency, and to protect against frost damage. Such insulation may also be mandatory

under local regulations� Rinnai recommend insulation to achieve at least the R value shown in the following table�

Location of Installation

Hot pipe between tank

and collectors

and

Cold pipe between tank

and collectors�

(the side with the TA

valve)

Pipe between tank and

gas booster

• CER Zone 4

• Areas dened as “B or “C” in the latest version of the Rinnai Solar Hot Water Warranty Booklet�

R = 0�6 K�m²/W R = 0�6 K�m²/W

• Any other area prone to frost conditions�

• All other areas R = 0�6 K�m²/W insulation not required

With the exception of solar collector ow and return pipes, water pipe sizing should be performed in accordance

with AS/NZS 3500�

All supplied insulation materials must be tted as shown to minimise heat losses. In frost prone areas this insulation will also protect against frost damage. If frost valves are tted they must remain free of any insulation materials.

Frost valves must be exposed directly to ambient air conditions to ensure correct operation�

WATER SUPPLY

The maximum water pressures for the various systems are listed on page 12� Approved pressure limiting valves may be required if the ‘Maximum’ rated water supply pressures are exceeded� For gas boosted systems to achieve

the rated ow through the outlet of the continuous ow water heater, the minimum water supply pressures must be supplied. The systems will operate at lower pressures but the rated ow will not be achieved.

Water chemistry and impurity limits are detailed in the separate warranty booklet� Most metropolitan water supplies fall within these requirements� If you are unsure about water quality, contact your water authority� If sludge or

foreign matter is present in the water supply, a suitable lter should be incorporated in the water supply to the

storage cylinder�

Rinnai 18 CC B OIM