Owners Guide
and
Installation Instructions
Gas Heavy Duty
Water Heater
260 Litre Models
This water heater must be installed and serviced by an authorised person.
Please leave this guide with a responsible officer.
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The other pages are intended for the installer but may be of interest.
Save A Service Call ...................................................................11
Installation..................................................................................14
Connections – Plumbing ..........................................................23
Multiple Installations.................................................................26
Commissioning..........................................................................31
Lighting The Water Heater........................................................33
Draining The Water Heater .......................................................37
Water Supplies...........................................................................38
Warranty.....................................................................................39
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ABOUT YOUR WATER HEATER
MODEL TYPE
Congratulations for choosing a Rheem® Heavy Duty Gas water heater. The
model you have chosen is a quick recovery water heater.
HOW HOT SHOULD THE WATER BE?
The water heater features
a
user
adjustable thermostat, which allows you
to personally choose the most suitable
temperature for your hot water needs.
Refer to “Temperature Adjustment” on
page 4.
maximum thermostat
setting
minimum recommended
stored water temperature
To meet the requirements of the National
Plumbing Standard the temperature of the
stored water must not be below 60°C.
maximum recommended
supply temperature to
bathrooms and ensuites
If this water heater is installed as an
in-series booster water heater as part of a
commercial solar water heating system,
then Rheem recommends the thermostat
is set at 60°C to maximise solar
contribution.
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
This water heater can deliver water at temperatures which can cause scalding.
Check the water temperature before use, such as when entering a shower or
filling a bath or basin, to ensure it is suitable for the application and will not
cause scald injury.
We recommend and it may also be required by regulations that an approved
temperature limiting device be fitted into the hot water pipe work to the bathing
and public areas when this water heater is installed. This will keep the water
temperature below 50°C at the bathroom and ensuite. The risk of scald injury
will be reduced and still allow hotter water to the kitchen and laundry.
TEMPERATURE ADJUSTMENT
The temperature adjusting dial is on the gas
valve, located at the lower front of an indoor
model and behind the access cover on the
lower front on an outdoor model. A setting of
‘6’ will normally maintain the water
temperature at about 60°C. Each number
represents
a
temperature difference of
approximately 6°C.
4
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ABOUT YOUR WATER HEATER
To increase the water temperature to 65°C, turn the gas control knob
anticlockwise to a setting of ‘7’. Refer to “Hotter Water Increases the Risk of
Scald Injury” on page 4.
WARNING
This water heater is not intended to be operated, adjusted or tampered with by
young children or infirm persons. Young children should be supervised to
ensure they do not interfere with the water heater.
SAFETY
This water heater is supplied with a thermostat, an over-temperature cut-out,
and a combination temperature pressure relief valve. These devices must not
be tampered with or removed. The water heater must not be operated unless
each of these devices is fitted and is in working order.
The warranty can become void if relief valves or other safety devices are
tampered with or if the installation is not in accordance with these
instructions.
•
Do
not
store
flammable
or
combustible materials near the water
heater. Flammable liquids (such as
petrol), newspapers and similar articles
must be kept well away from the water
heater and the draught diverter or flue
terminal.
•
Do not use aerosols, stain removers
and household chemicals near the
water heater whilst it is working. Gases
from some aerosol sprays, stain
removers and household chemicals
become corrosive when drawn into a
flame.
•
•
Do not store swimming pool chemicals, household cleaners, etc., near
the water heater.
Do not place anything on top of the water heater or in contact with the
draught diverter or flue terminal. Ensure the flue terminal is not obstructed in
any way at any time.
•
Do not use Propane / Butane gas mixtures in a 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.
5
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ABOUT YOUR WATER HEATER
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
•
•
•
Shut down the gas control (refer to “Close Down Procedure” on page 36).
Close the gas isolation valve at the inlet to the gas control.
Close the cold water isolation valve at the inlet to the water heater.
TO TURN ON THE WATER HEATER
•
•
•
Open the cold water isolation valve fully at the inlet to the water heater.
Open the gas isolation valve fully at the inlet to the gas control.
Light the water heater (refer to “Lighting the Water Heater” on page 33).
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 21 and 22 and pages 26 to 30.
The water heater must be installed by an authorised person and the installation
must comply with National Standards AS/NZS 3500.4, AS 5601 and all local
codes and regulatory authority requirements. In New Zealand, the installation
must conform with the Code of Practice for installation of Gas Appliances
NZS 5261 and the New Zealand Building Code.
DOES THE WATER QUALITY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some
water qualities may have detrimental effects on the cylinder and fittings. If you
are in a known harsh water area you must read page 38. If you are not sure,
have your water quality checked against the conditions described on page 38.
HOW LONG WILL THE WATER HEATER LAST?
There are a number of factors that will affect the length of service the water
heater will provide. These include the water quality, the water pressure,
temperature (inlet and outlet) and the water usage pattern. However, your
water heater is supported by a comprehensive warranty (refer to page 40).
6
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ABOUT YOUR WATER HEATER
ANODE PROTECTION
The anode(s) installed in your water heater will slowly dissipate whilst
protecting the cylinder. The life of the water heater cylinder may be extended
by arranging for an authorised person to inspect the anode(s) and replace if
required.
The suggested time after installation when the anode(s) should be inspected is:
Heavy Duty
7 years
For softened water supplies or in areas of poor water quality, it is
recommended the anode(s) be inspected 3 years earlier than shown (refer to
“Water Supplies” on page 38).
7
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HOW YOUR WATER HEATER WORKS
Water is stored in a vitreous enamel lined steel cylinder and heated by a gas
burner located under the cylinder. The heat produced by the burner is
transferred to the water through the base of the cylinder and through the wall of
a flue pipe which passes through the centre of the cylinder. A flue baffle in this
flue ensures the efficiency of the water heater is correct. The gas supply to the
burner is controlled by the thermostat so the water is heated to a constant
temperature. Automatic safety controls are fitted to the water heater to provide
safe and efficient operation.
MAINS PRESSURE
The water heater is designed to operate at
mains pressure by connecting directly to
the mains water supply. If the mains supply
pressure in your area exceeds that shown
on page 17, a pressure limiting valve must
be fitted. The supply pressure should be
greater than 350 kPa for true mains
pressure operation to be achieved.
PIEZO IGNITION
lighting the pilot flame of your water heater
very easy. Simply follow the instructions on
the label attached to the front of an indoor
model and to the back of the access door
on an outdoor model. There is no need for
matches to light the water heater.
PILOT IGNITER
A permanent pilot flame burns to ignite the
main burner automatically. Heat from the
pilot is absorbed by the water.
GOING ON HOLIDAYS
If you are going on holiday for more than a
few days the thermostat can be set to the
“·” (pilot) position to conserve energy
(refer to point 1 of “Close Down Procedure”
on page 36). If it is necessary to turn off the
water heater, refer to “To Turn Off The
Water Heater” on page 6.
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REGULAR CARE
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the water
heater and is essential for its safe
operation. It is possible for the valve to
release a little water through the drain
line during each heating period. This
occurs as the water is heated and
expands by approximately 1/50 of its
volume.
Continuous leakage of water from the
valve and its drain line may indicate a
problem with the water heater (refer to
Running” on page 12).
WARNING: Never block the outlet of
this valve or its drain line for any
reason.
Operate the easing lever on the
temperature pressure relief valve once
every six months. It is very important
you raise and lower the lever gently.
water
heater
DANGER: Failure to do this may result
in the water heater cylinder failing.
If water does not flow freely from the
drain line when the lever is lifted, then
the water heater should be checked by
the Rheem Service Department or their
Accredited Service Agent.
lift until water
flows from the
drain line –
drain
line
lower gently
The temperature pressure relief valve should be checked for performance or
replaced at intervals not exceeding 5 years, or more frequently in areas where
there is a high incidence of water deposits (refer to “Water Supplies” on
page 38).
9
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REGULAR CARE
EXPANSION CONTROL VALVE
In many areas, including South Australia, Western Australia and scaling water
areas, an expansion control valve is fitted to the cold water line to the water
heater. Water will flow from its drain line during the heating period.
Operate the easing lever on the expansion control valve once every six
months. It is very important you raise and lower the lever gently. The
expansion control valve should be checked for performance or replaced at
intervals not exceeding 5 years, or more frequently in areas where there is a
high incidence of water deposits.
SERVICING
For safe and efficient operation, the water heater should be serviced annually
by your nearest Rheem Service Department or their Accredited Service Agent.
Only genuine replacement parts should be used on this water heater.
Warning: Servicing of a gas water heater should only be carried out by
authorised personnel.
In commercial applications where large volumes of hot water are used,
sediment may build up on the bottom of the cylinder and reduce the heating
efficiency. In extreme cases, particularly in areas of high water sediment,
draining and flushing out may be necessary. Contact your plumber to drain and
flush the water heater.
10
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SAVE A SERVICE CALL
Check the items below before making a service call. You will be charged for
attending to any condition or fault that is not related to manufacture or failure of
a part.
NOT ENOUGH HOT WATER (OR NO HOT WATER)
•
Are you using more hot water than you think?
Is one outlet (especially the shower)
using more hot water than you think?
Very often it is not realised the amount
of hot water used, particularly when
showering. Carefully review the family’s
hot water usage. Have your plumber fit
a flow control valve to each shower
outlet to reduce water usage.
•
Pilot flame alight?
Check the pilot flame is burning by
viewing through the opening in the top
of the front cover of an indoor model or
by looking through the large opening
below the gas control of an outdoor
model. Relight the pilot flame according
to the lighting instructions (refer to
“Lighting the Water Heater” on
page 33).
•
•
Temperature pressure relief valve running
Is the relief valve discharging too much water? (Refer to “Temperature
Pressure Relief Valve Running” on page 12).
Thermostat setting
Ensure the thermostat setting is appropriate. You may choose to adjust the
thermostat upwards to gain additional hot water capacity.
Note: Hotter water increases the risk of scald injury.
•
Water heater size
Do you have the correct size water heater for your requirements? The sizing
guide in the Rheem sales literature and on the Rheem website
(www.rheem.com.au) suggests average sizes that may be needed.
WATER NOT HOT ENOUGH
You may find that due to heavy hot water usage the water temperature may be
lower than normally expected.
11
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SAVE A SERVICE CALL
CAN’T LIGHT THE PILOT FLAME
•
Is there gas to the water heater?
Check the gas isolation valve on the
gas supply line is open.
•
Is there a normal gas supply to the
rest of the premises?
Try lighting another gas appliance to
check. If there is no gas, call the gas
supplier.
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
•
Normal Operation
It is normal and desirable this valve
allows a small quantity of water to
escape during the heating cycle.
However, if the discharge is deemed
excessive (more than 2% of hot water
used), there may be another problem.
•
Continuous dribble
Try gently raising the easing lever on
the relief valve for a few seconds
(refer to “Temperature Pressure
Relief Valve” on page 9). This may
dislodge a small particle of foreign
matter and clear the fault. Release
the lever gently.
•
Steady flows for long period (often
at night)
This may 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.
NEVER replace the relief valve with one of a higher pressure rating.
•
Heavy flows of hot water until the water heater is cold - then stops
until water reheats
The gas control must be turned off using the knob on top of the gas control
thermostat (refer to “Close Down Procedure” on page 36). Phone your
nearest Rheem Service Department or Accredited Service Agent to arrange
for inspection.
12
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SAVE A SERVICE CALL
EXPANSION CONTROL VALVE RUNNING
If an expansion control valve is fitted in the cold water line to the water heater
(refer to page 23) it may discharge a small quantity of water instead of the
WATER HEATER APPEARS TO BE LEAKING
When the water heater is first lit, or after a large usage of hot water,
condensation may form on the burner of the water heater. This is quite normal,
especially in winter months and will dry off as the water is heated.
HIGH GAS BILLS
Should you at any time, feel your gas account is too high, we suggest you
check the following points:
•
•
Is the relief valve running excessively?
(Refer to “Temperature Pressure Relief
Is one outlet (especially the shower)
using more hot water than you think?
(Refer to “Not Enough Hot Water” on
page 11).
•
•
Is there a leaking hot water pipe,
dripping hot water tap, etc? Even a
small leak will waste
a
surprising
quantity of hot water and gas. Replace
faulty tap washers, and have your
plumber rectify any leaking pipe work.
Consider recent changes to your hot
water usage pattern and check if there
has been any increase in tariffs since
your previous account.
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU
NEED ASSISTANCE, CALL YOUR NEAREST RHEEM SERVICE
DEPARTMENT OR ACCREDITED SERVICE AGENT.
13
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INSTALLATION
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
Check the water heater is suitable for the gas type available
(refer to the rating label on the water heater).
WATER HEATER LOCATION
An indoor model must be installed indoors and an outdoor model must be
installed outdoors. The water heater should be installed close to the most
frequently used outlets or with a circulated flow and return system and its
position chosen with safety and service in mind. Make sure people (particularly
children) will not touch the flue outlet. The flue terminal must be clear of
obstructions and shrubbery.
Clearance must be allowed for servicing of the water heater. The water heater
must be accessible without the use of a ladder or scaffold. Make sure the
temperature pressure relief valve lever is accessible and the front cover and
burner can be removed for service.
You must be able to read the information on the rating plate. If possible leave
headroom of one water heater length so the anode can be inspected or
replaced. Remember you may have to remove the entire water heater later for
servicing.
The installation must comply with the requirements of AS/NZS 3500.4, AS 5601
and all local codes and regulatory authority requirements. In New Zealand, the
installation must conform with NZS 5261 Code of Practice for Installation of
Gas Burning Appliances and the New Zealand Building Code.
The water heater must not be installed in an area with a corrosive atmosphere
where chemicals are stored or where aerosol propellants are released.
Remember the air may be safe to breathe, but when it goes through a flame,
chemical changes take place which may attack the water heater.
For a single water heater installation, follow the diagrams on pages 21 and 22.
For multiple water heater installations, follow the instructions on pages 26
to 30.
14
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INSTALLATION
INDOOR INSTALLATION
A secondary flue must be installed with an indoor water heater to discharge
combustion products outside the building. The flue must be self supporting and
not impose a load on the water heater. Use a slip joint or similar to allow for
disconnection. There must be a vertical rise of 600 mm from the draught
diverter before changing direction. The flue design and installation must comply
with AS 5601.
For indoor models the distances set
out in the diagram should be observed.
Keep the water heater and flue at least
25 mm clear of walls, cupboards,
timber or any other combustibles and
at least 500 mm clear of curtains and
furnishings.
The water heater is to be installed at
floor level and must stand vertically
upright.
There
are
special
requirements in AS 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.
If installed in a cupboard, an adequate
air supply must be provided. For
efficient water heater operation allow a
free open space at both the top and
bottom of the access door, each of at
least:
•
30,000 mm2 for a 50 MJ model
SAFE TRAY
It is a requirement of AS/NZS 3500.4
that for a new installation, a water
heater be installed in a safe tray where
in the event of a leak, property may
otherwise be damaged. Construction,
installation and draining of a safe tray
must comply with the abovementioned
Standard.
15
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INSTALLATION
OUTDOOR INSTALLATION
The water heater is to be installed at
ground level on a concrete or brick
plinth (fire proof base) and must stand
vertically upright with the back of the
water heater against an external wall
or alternatively against
a
fireproof
screen extending at least 500mm
above, below and either side of the flue
terminal. Failure to observe this
precaution can cause problems in high
wind areas. A secondary flue is not
required.
As a guide the following requirements extracted from the Australian Gas
Installations Standard AS 5601, must be observed:
•
At least 300mm between the top of
the water heater and the eaves.
•
At least 500mm between the water
heater and the edge of any opening
into
the
building,
measured
horizontally and vertically.
•
At least 500mm between the water
heater and a return wall or external
corner, measured horizontally along
the wall.
•
•
At least 500 mm below any
openable window.
At least 500mm clear of any combustibles.
16
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INSTALLATION
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below,
an approved pressure limiting valve is required and should be fitted as shown
in the installation diagram (refer to diagram on page 23).
Model
260
Relief valve setting
1000 kPa
850 kPa
Expansion control valve setting *
Max. mains supply pressure
With expansion control valve
Without expansion control valve
680 kPa
800 kPa
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply, then the bottom of
the supply tank must be at least 1 m above the highest hot water outlet. Take
care to avoid air locks. The cold water line to the water heater should be
adequately sized and fitted with a full flow gate valve or ball valve.
HOT WATER DELIVERY
This water heater can deliver water at temperatures which can cause scalding.
It is necessary and we recommend that a temperature limiting device be fitted
between the water heater and the hot water outlets in any ablution and public
areas such as a bathrooms, ensuites or public amenities, to reduce the risk of
scalding. The installing plumber may have a legal obligation to ensure the
installation of this water heater meets the delivery water temperature
requirements of AS/NZS 3500.4 so that scalding water temperatures are not
delivered to a bathroom, ensuite or other ablution or public area.
Where a temperature limiting device is installed adjacent to the water heater,
the cold water line to the temperature limiting device can be branched off the
cold water line either before or after the isolation valve, pressure limiting valve
and non return valve to the water heater. If an expansion control valve is
required, it must always be installed after the non return valve and be the last
valve prior to the water heater.
If a pressure limiting valve is installed on the cold water line to the water heater
and the cold water line to a temperature limiting device branches off before this
valve or from another cold water line in the premises, then a pressure limiting
valve may be required prior to the temperature limiting device.
17
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INSTALLATION
Two Temperature Zones Using a Temperature Limiting Device
CIRCULATED HOT WATER FLOW AND RETURN SYSTEM
If a Rheem water heater is to be installed as part of a circulated hot water flow
and return system, a storage water heater able to provide a hot water outlet
temperature of at least 60°C must be used. Note: The thermostat must always
be set to at least 60°C. Refer to the diagram on page 19.
Temperature Limiting Device
A temperature limiting device cannot be installed in circulated hot water flow
and return pipe work unless it is specifically designed to do so, such as the
Rheem Guardian warm water system.
The tempered water from a temperature limiting device cannot be circulated.
Where a circulated hot water flow and return system is required in a building, a
temperature limiting device can only be installed on a dead leg, branching off
the circulated hot water flow and return pipe.
If circulated tempered water were to be returned back to the water heater,
depending on the location of the return line connection on the water supply line
to the water heater, then either:
•
•
water will be supplied to the cold water inlet of the temperature limiting
device at a temperature exceeding the maximum recommended water
supply temperature, or
when the hot taps are closed no water will be supplied to the cold water
inlet of the temperature limiting device whilst hot water will continue to be
supplied to the hot water inlet of the temperature limiting device.
18
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INSTALLATION
These conditions may result in either water at a temperature exceeding the
requirements of AS/NZS 3500.4 being delivered to the hot water outlets in the
ablution areas, or the device closing completely and not delivering water at all,
or the device failing. Under either condition, the operation and performance of
the device cannot be guaranteed.
Circulated Hot Water Flow and Return System – Gas Water Heater
REDUCING HEAT LOSSES
The cold water line to and the hot water line from the water heater must be
insulated in accordance with the requirements of AS/NZS 3500.4. The
insulation must be weatherproof and UV resistant if exposed.
ANODE TYPES
The correct anode type for the water supply being used must be fitted in the
water heater (refer to “Water Supplies” on page 38). The black anode is fitted
as standard.
Total Dissolved Solids in water supply to the water heater
Anode colour code
0 – 40 mg/L
40 – 600 mg/L
600 – 2500 mg/L
Green
Black
Blue
SADDLING - PIPE WORK
To prevent damage to the cylinder when attaching pipe clips or saddles to the
water heater jacket, we recommend the use of self-drilling screws with a
maximum length of 12 mm. Should pre drilling be required, extreme caution
must be observed when penetrating the jacket of the water heater.
Note: Damage to the cylinder as a result of saddling to the jacket will void
the warranty.
19
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INSTALLATION
DIMENSIONS AND TECHNICAL DATA
Indoor
Outdoor
Model
620 260
630 260
260
litres
kg
Storage capacity
Mass (tank) Empty
Full
260
98
106
kg
358
366
Hourly Gas
Consumption (MJ)
Min. Gas
Pressure (kPa)
Test Point Gas
Pressure (kPa)
Max. Gas
Pressure (kPa)
Gas Details
620 260, 630 260
620 260, 630 260
620 260, 630 260 620 260, 630 260
Natural
50
47
1.13
2.75
2.75
0.75
1.00
2.70
2.70
0.35
3.50
3.50
3.50
3.50
Propane
Butane
39
Town / TLP
40/36
Model numbers: N = Natural, P = Propane, B = Butane, T = Town / TLP. Letter N, P, B or T is
included in the model number, eg 620260N0, to denote gas type.
Specifications are subject to change with ongoing product improvements.
20
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CONNECTIONS – PLUMBING
CONNECTION SIZES
•
•
•
•
Hot water connection: RP1¼/32.
Cold water connection: RP1¼/32.
Relief valve connection: RP¾/20.
Gas inlet: RP½/15.
requirements.
All gas work must be carried out by a qualified person and in accordance with
the Australian Gas Installations Standard AS 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 heater. Use
the arrangement shown in the
installations. Refer also to “Hot Water
Delivery” on page 17.
A disconnection union must always
be provided at the cold water inlet
and hot water outlet on the water
heater to allow for disconnection of
the water heater.
All water heaters have a plastic dip
tube or fitting liner in the inlet and
outlet fittings (see diagram). These
must be in place for the water heater
to function properly. Do not remove or
damage them by using heat nearby.
They will be pushed into the correct
position as the fitting is screwed in.
23
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CONNECTIONS – PLUMBING
GAS INLET
The gas connection is made to the left hand side of the gas control, through the
grommet in the left hand side panel on outdoor 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
installed to allow servicing and removal of the water heater. Refer to the Gas
Installations Standard AS 5601 for the correct pipe sizing.
Warning: Always isolate the water heater before pressure testing the gas
supply system. 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.
Caution: Care is necessary when tightening fittings into the gas valve. The gas
valve casting may crack if the fittings are over tightened. Cracked valve
castings are not covered under warranty. Damaged valves must be replaced.
PIPE SIZES
The cold water pipe to the water heater should be the same size or bigger than
the hot water line from the water heater.
The pipe sizing for hot water supply 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.
RELIEF VALVE
The temperature pressure relief valve is shipped in the carton with the draught
diverter of an indoor model and behind the front cover of an outdoor model.
This valve must be fitted before the water heater is operated. Before fitting the
relief valve, make sure the probe has not been bent. Seal the thread with
Teflon tape - never hemp. Make sure the tape does not hang over the end of
the thread.
Screw the valve into the correct opening (refer to the installation diagrams on
pages 21 and 22) leaving the valve outlet pointing downwards. Do not use a
wrench on the valve body - use the spanner flats provided.
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CONNECTIONS – PLUMBING
RELIEF VALVE DRAIN
A copper drain line must be fitted to the relief valve to carry the discharge clear
of the water heater. Connect the drain line to the relief valve using a
disconnection union. The pipe work from the relief valve to the drain should be
as short as possible and fall all the way from the water heater with no
restrictions. It should have no more than three right angle bends in it. Use
DN20 pipe.
The outlet of the drain line must be in such a position that flow out of the pipe
can be easily seen (refer to AS/NZS 3500.4) - but arranged so hot water
discharge will not cause injury, damage or nuisance. The drain line must
discharge at an outlet or air break not more than 9 metres from the relief valve.
In locations wherhe relan .2(tee pis2( theroline tfthrzusi,of the drain ls )-6.ine muld be)
25
MULTIPLE INSTALLATIONS
A multiple installation of Rheem water heaters on a single manifold or multiple
manifolds is possible, using the Rheem Equa-Flow® manifold system, where
large volumes of hot water are required. The Equa-Flow principle will function
with water heaters in line, around a corner or in rows back to back (refer to the
diagrams on page 27).
The cold water and hot water manifolds must be designed to balance the flow
from each water heater. To achieve this, there are basic installation
requirements and principles which must be followed:
1. The maximum number of water heaters in a bank should be 8, however
several banks of water heaters can be installed.
2. The hot water line from the manifold must leave from the opposite end to
which the cold water line enters the manifold.
3. The water heaters must be of the same model.
4. The cold water line, cold and hot headers and hot water line must be sized
to meet the requirements of both AS/NZS 3500.4 and the application.
5. A non return valve, isolation valve and if required a pressure limiting valve
and expansion control valve, must be installed on the cold water line to the
system.
heater installation) must be installed on both the cold water branch and hot
water branch of each water heater.
7. Non return valves or pressure limiting valves must not be installed on the
branch lines to the water heaters.
8. All fittings, valves and branch lines must be matched sets all the way along
the manifold.
9. Sufficient space must be left to enable access, servicing or removal of any
water heater. Outdoor 630 260 models must be spaced at minimum
920 mm centres to provide the required clearance between flue terminals.
10.The temperature pressure relief valve drain line from each water heater can
terminate at a common tundish (funnel) with a visible air break at each drain
discharge point (refer to the diagram on page 27 and to “Relief Drain Line”
on page 25).
Refer to the diagrams on pages 27 to 30 for installation and plant layout details.
26
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MULTIPLE INSTALLATIONS
In Line Manifold
NOTES:
Angle Manifold
1. Minimum
recommended
space
between wall and back of water heater
is 100 mm.
2.
A
minimum of 900 mm (E*
&
F*)
should be left in front of the water
heater for access, servicing and water
heater removal.
Installation Layout Minimum Dimensions
Model
A
B
C
D
E *
F *
900
900
620 260
630 260
845
920
595
595
300
420
100
420
1670
1670
Back to Back Manifold
INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS
29
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COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The gas pilot or burner must not be lit until the water heater is filled with
water.
•
•
•
Open all of the hot water taps in the building (don’t forget the showers) and
supply cock(s) and valve(s) in the system.
Open the isolation valves fully on the cold and hot water branches to the
water heater(s) installed in a bank.
Open the cold water isolation valve on the cold water line to the water
heater(s).
Air will be forced out of the taps.
•
•
•
•
•
•
Close each tap as water flows freely from it.
Check the pipe work for leaks.
Open the gas isolation valve(s) fully.
Check the gas pipe work for leaks.
Light the water heater(s) (refer to “Lighting the Water Heater” on page 33).
Check the pipe work again for leaks, when the system has reached its
working temperature.
Warning: Upon completion of the installation and commissioning of the water
heater, leave this guide with the householder or responsible officer.
DO NOT leave this guide inside of the cover of the water heater, as it may
interfere with the safe operation of the water heater or ignite when the water
heater is turned on.
GAS INLET PRESSURE
IMPORTANT – CHECK the gas supply pressure at the inlet to the water heater
with the water heater and all other gas burning appliances in the premises
operating (burners alight). The minimum gas supply pressure is:
Natural Gas 1.13 kPa
Town / TLP 0.75 kPa
Propane
Butane
2.75 kPa
2.75 kPa
If this minimum cannot be achieved, it may indicate the meter or the gas line to
the water heater is undersized. It is important to ensure that an adequate gas
supply pressure is available to the water heater when other gas burning
appliances, on the same gas supply, are operating.
31
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COMMISSIONING
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation,
such as on a building site or where the premises is vacant, then:
•
•
•
Shut down the gas control (refer to “Close Down Procedure” on page 36).
Close the gas isolation valve(s) at the inlet to the gas control(s).
Close the cold water isolation valve on the cold water line to the water
heater(s) to shut down the entire system, or;
•
Close the isolation valves on the cold and hot water branches to shut down
an individual water heater in a bank.
32
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LIGHTING THE WATER HEATER
FOR YOUR SAFETY READ BEFORE LIGHTING
Warning: This gas water heater is designed to operate reliably and safely as
long as the operating instructions are followed exactly. You must comply with
these lighting instructions at every stage.
Make sure the water heater is filled with water and the water supply is on,
otherwise serious damage to the vitreous enamel cylinder lining and
plastic components may occur.
The installer must check all gas connections for leaks, gas supply pressure and
test point pressure (refer rating label).
SAFETY INFORMATION
A. This water heater is equipped with an igniter button which lights the pilot.
When lighting the pilot follow these instructions exactly.
B. Before lighting ensure there is no smell of gas around or in the vicinity of
the water heater and the burner opening. Be sure to smell next to ground
level as some gases can settle there.
C. What to do if you smell gas.
Do not try to light the water heater.
If the gas smell is throughout the area, turn the gas control knob clockwise
to the “z” (off) position and then turn off the isolation valve on the gas line
to the water heater. Leave the area and call Rheem Service or a qualified
service technician.
D. Use only your hand to turn the gas control knob, never use tools. If the
control knob will not turn by hand, don’t try to repair it, call a qualified
service technician. Force or attempted repair may cause a fire or
explosion.
E. Do not attempt to operate this water heater if it has been damaged. Call a
qualified service technician.
33
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LIGHTING THE WATER HEATER
LIGHTING INSTRUCTIONS
Using the gas control light the water heater as follows:
1. Stop, read the safety information on page 33.
2. Turn the gas control knob fully clockwise to the “z” (off) position.
3. Wait five (5) minutes so any build up of unburnt gas can escape. If you
then smell gas, stop and follow “C” in the safety information. If you do not
smell gas, proceed to step 4.
4. Turn the knob to the “·” (pilot) position.
5. Depress the knob fully (until star disappears below housing) and after
30 seconds, whilst keeping the knob depressed, repeatedly press the
igniter button (for up to 40 seconds) until the pilot flame ignites.
Warning: Keep your face clear of the combustion chamber opening while
pressing the igniter.
Note: It is not possible to depress the knob fully if the gas control has
activated its safety shut-off feature. In this case, wait 60 seconds for the
gas control to reset.
6. Keep the knob depressed for 20 seconds after the pilot flame lights. The
pilot can be checked by looking through the opening at the top of the front
cover to view the flame in the reflector on an indoor model or through the
large opening below the gas control on an outdoor model.
7. Release the knob and check the pilot is still alight.
8. If the pilot has failed to light or has not remained alight, turn the gas control
knob to the "z” (off) position. Wait five (5) minutes for any unburnt gas to
escape and then begin again at step 3.
Note: Failure to wait five (5) minutes may result in a fire or explosion.
9. When the pilot flame remains alight with the gas control knob released,
turn the knob anticlockwise to the setting of ‘6’. This will give a water
temperature of about 60°C.
If this water heater is installed as an in-series booster water heater as part
of a commercial solar water heating system, then Rheem recommends the
thermostat is set at 60°C to maximise solar contribution.
10. Refer to “Temperature Adjustment” on page 4, if further temperature
adjustment is required.
11. Replace the access cover on an outdoor model.
34
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LIGHTING THE WATER HEATER
The main burner will now automatically ignite when heating is required and
extinguish when the water has been heated to the set temperature. If the main
burner does not light at the selected setting, the water may already be at the
selected temperature.
Note: Never press the igniter button while the top knob is in a numbered
position.
TEST THE WATER HEATER AFTER INSTALLATION
•
•
•
•
The operation of the water heater must be thoroughly checked by the
installer.
The burner flame must light smoothly and quickly from the pilot flame, and
must go out quietly and completely.
The main burner flame must be stable, although slight lifting at the front
edge of the burner is acceptable when the burner is cold.
The main burner flame should be blue, with a clearly defined inner cone -
luminous yellow or "floating" flames are not acceptable, and must be
corrected by opening the air shutter (refer to “Air Shutter” on page 35).
•
Check the test point pressure and compare with the rating label. The
pressure regulator is not adjustable and if the test point pressure is not
within 5% of the specified value, refer to Rheem or their Accredited Service
Agent.
•
•
If unable to get the water heater working properly, contact the nearest
Rheem Service Department or their Accredited Service Agent.
When satisfied everything is working properly instruct the user in the correct
method of operation.
AIR SHUTTER
The air shutter is a hinged flap in the burner aeration tube. It may require
adjustment on installation.
•
•
For a Propane and Butane model, the air shutter should be fully open.
For a Town and TLP model, the air shutter should be within 10 mm of the
top of the burner aeration tube.
•
The shutter is held in place by a screw on the side of the burner aeration
tube.
Note: A Natural gas model does not have an air shutter.
35
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LIGHTING THE WATER HEATER
CLOSE DOWN PROCEDURE
1. Turn the gas control knob to the
“·” position (pilot). This setting will
leave the pilot flame alight however
the main burner will not be able to
light.
2. Turn the gas control knob to the
"z" (off) position. This setting shuts
the gas control down completely.
36
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DRAINING THE WATER HEATER
To drain the water heater:
•
Turn off the water heater (refer to “To Turn Off The Water Heater” on
page 32).
•
•
Close all hot water taps.
Operate the relief valve release lever - do not let the lever snap back or you
will damage the valve seat.
Operating the lever will release the pressure in the water heater.
Attach a hose to the water heater drain cock.
Let the other end of the hose go to a drain.
Open the drain cock.
•
•
•
Operate the relief valve again.
This will let air into the water heater and allow the water to drain through the
hose.
37
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WATER SUPPLIES
Your water heater is manufactured to suit the water conditions of most
Australian metropolitan supplies. However, there are some known water
supplies which can have detrimental effects on the water heater and its
operation and/or life expectancy. If you are unsure of your water quality, you
can obtain information from your local water supply authority.
ANODE
In areas where the total dissolved solids (TDS) exceeds 600 mg/L it is possible
the black anode, which is the standard anode fitted to the water heater, may be
excessively active. To alleviate this, the black anode should be replaced with
one colour coded blue. Where the TDS of the water is less than 40 mg/L, such
as when the water has been deionised or is from an alpine supply, a high
potential anode, colour coded green, should be used. The changing of anodes
must be carried out by a plumber or authorised service person.
CAUTION
If your water supply has a TDS greater than 600 mg/L and the anode has not
been changed to a blue one, there is the possibility hydrogen gas could
accumulate in the top of the water heater during long periods of no use.
If, under these conditions, the water heater has not been used for two or more
weeks the following procedure should be carried out before using any electrical
appliances (automatic washing machines and dishwashers) which are
connected to the hot water supply.
The hydrogen, which is highly flammable, should be vented safely by opening a
hot tap and allowing the water to flow. There should be no smoking or naked
flame near the tap whilst it is turned on. Any hydrogen gas will be dissipated.
This is indicated by an unusual spurting of the water from the tap. Once the
water runs freely again, any hydrogen in the system will have been released. In
areas where this is likely to occur, the householder should be instructed by the
installer on how to dissipate the gas safely.
SATURATION INDEX
The saturation index is used as a measure of the water’s corrosive or scaling
properties. In a corrosive water supply, the water can attack copper parts and
cause them to fail. In a scaling water supply calcium carbonate is deposited out
of the water onto any hot metallic surface. Where the saturation index exceeds
+0.40, the water is scaling and an expansion control valve* must be fitted on
the cold water line after the non-return valve.
* Refer to the cold water connection detail on page 23.
WATER HEATERS NOT INSTALLED IN ACCORDANCE WITH THE ABOVE
ADVICE WILL NOT BE COVERED BY THE WARRANTY.
38
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RHEEM MAINS PRESSURE WATER HEATER WARRANTY
– AUSTRALIA ONLY –
WARRANTY CONDITIONS
1. This warranty is applicable only to water heaters
manufactured from 1st September 2005.
Accredited Service Agent’s premises and the installed site
shall be the owner’s responsibility.
2. The water heater must be installed in accordance with the
Rheem water heater installation instructions, supplied with
the water heater, and in accordance with all relevant
statutory and local requirements of the State in which the
water heater is installed.
5. Where the water heater is installed in a position that does
not allow safe, ready access, the cost of accessing the
site safely, including the cost of additional materials
handling and / or safety equipment, shall be the owner’s
responsibility.
3. Where a failed component or water heater is replaced 6. The warranty only applies to the water heater and original
under warranty, the balance of the original warranty
period will remain effective. The replaced part or water
heater does not carry a new warranty.
or genuine (company) component replacement parts and
therefore does not cover any plumbing or electrical parts
supplied by the installer and not an integral part of the
water heater, e.g. pressure limiting valve; isolation valves;
non-return valves; electrical switches; pumps or fuse.
4. Where the water heater is installed outside the boundaries
of a metropolitan area as defined by Rheem or further
than 25 km from a regional Rheem branch office, or an 7. The water heater must be sized to supply the hot water
Accredited Service Agent, the cost of transport, insurance
and travelling costs between the nearest Rheem
demand in accordance with the guidelines in the Rheem
water heater literature.
WARRANTY EXCLUSIONS
1. REPAIR AND REPLACEMENT WORK WILL BE CARRIED OUT AS SET OUT IN THE RHEEM WATER
HEATER WARRANTY, HOWEVER THE FOLLOWING EXCLUSIONS MAY CAUSE THE WATER HEATER
WARRANTY TO BECOME VOID AND MAY INCUR A SERVICE CHARGE AND / OR COST OF PARTS.
a) Accidental damage to the water heater or any component,
including: Acts of God; failure due to misuse; incorrect
installation; attempts to repair the water heater other than
by a Rheem Accredited Service Agent or the Rheem
Service Department.
system: without a freeze protection system; with a freeze
protection system where the electricity supply has been
switched off or has failed; (Hiline) installed at an altitude
more than 600 metres above sea level; (Loline) installed
at an altitude more than 800 metres above sea level;
where the system has not been installed in accordance
with the water heater installation instructions.
b) Where it is found there is nothing wrong with the water
heater; where the complaint is related to excessive
discharge from the temperature and / or pressure relief e) Where the water heater is located in a position that does
valve due to high water pressure; where there is no flow
of hot water due to faulty plumbing; where water leaks are
related to plumbing and not the water heater or water
heater components; where there is a failure of gas,
electricity or water supplies; where the supply of gas,
electricity or water does not comply with relevant codes or
acts.
not comply with the Rheem water heater installation
instructions or relevant statutory requirements, causing
the need for major dismantling or removal of cupboards,
doors or walls, or use of special equipment to bring the
water heater to floor or ground level or to a serviceable
position.
f) Repair and / or replacement of the water heater due to
scale formation in the waterways or the effects of
corrosive water when the water heater has been
connected to a scaling or corrosive water supply as
outlined in the Owner’s Guide and Installation Instructions
booklet.
c) Where the water heater or water heater component has
failed directly or indirectly as a result of: excessive water
pressure; excessive temperature and / or thermal input;
blocked overflow / vent drain; corrosive atmosphere; ice
formation in the pipe work to or from the water heater.
d) Where the solar water heater or solar water heater g) Breakage of collector glass for any reason including hail
component has failed directly or indirectly as a result of
ice formation in the water ways of a solar water heater
damage. (We suggest that the collector glass be covered
by your home insurance policy).
2. SUBJECT TO ANY STATUTORY PROVISIONS TO THE CONTRARY, THIS WARRANTY EXCLUDES ANY
AND ALL CLAIMS FOR DAMAGE TO FURNITURE, CARPETS, WALLS, FOUNDATIONS OR ANY OTHER
CONSEQUENTIAL LOSS EITHER DIRECTLY OR INDIRECTLY DUE TO LEAKAGE FROM THE WATER
HEATER, OR DUE TO LEAKAGE FROM FITTINGS AND / OR PIPE WORK OF METAL, PLASTIC OR
OTHER MATERIALS CAUSED BY WATER TEMPERATURE, WORKMANSHIP OR OTHER MODES OF
FAILURE.
39
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RHEEM MAINS PRESSURE WATER HEATER WARRANTY
– AUSTRALIA ONLY –
WARRANTY
Rheem will:
a) Repair or, if necessary replace any Rheem water heater; or
b) Replace any component (or, if necessary, arrange the installation of a new water heater),
which falls within the Warranty Periods specified below, subject to the warranty conditions and exclusions.
Installation
Model
Period
Warranty
All Components (from date of installation)
Year New component or water heater (at Rheem’s sole
discretion), free of charge, including labour.**
All installations
All models
1
Sealed System * (from date of installation)
Water heater installed in a “single-
family domestic dwelling with a
thermostat setting below 76°C”
Year New sealed system component, free of charge, including
Heat Pump
2
labour.**
Cylinder and SuperFlue (from date of installation)
Rheemglas
RheemPlus
Loline
Hiline
Heat Pump
Years
2 & 3
New water heater, free of charge, including labour.**
Years New water heater, free of charge, with installation and
4 & 5 labour costs being the responsibility of the owner.
Water heater installed in a “single-
family domestic dwelling with a
thermostat setting below 76°C”
Years
Stellar
Optima
Heavy Duty
New water heater, free of charge, including labour.**
2 to 5
Years New water heater, free of charge, with installation and
6 to 10 labour costs being the responsibility of the owner.
Rheemglas
RheemPlus
Loline
Hiline
Heat Pump
Stellar
Optima
Heavy Duty
Years New water heater, free of charge, with installation and
2 & 3 labour costs being the responsibility of the owner.
Water heater installed in any other than
a “single-family domestic dwelling with
a thermostat setting below 76°C”
Years New water heater, free of charge, with installation and
2 to 5 labour costs being the responsibility of the owner.
Solar Collector (from date of installation)
SCT200
SBT200
NPT200
Years New solar collector, free of charge, with installation and
2 to 5 labour costs being the responsibility of the owner.
All installations
Notes:
* The Sealed System includes components that carry refrigerant only, e.g. Compressor, Condenser, TX Valve, Receiver/Drier,
Evaporator and associated pipe work.
** Refer to items 4 and 5 of warranty conditions.
Rheem reserves the right to transfer fully functional components from the defective water heater to the replacement water heater
if required. The term “water heater” used in the Warranty, Warranty Conditions and Warranty Exclusions means the Rheem
supplied water heater(s), solar storage tank(s), solar collector(s), kit(s) and components.
In addition to this warranty, the Trade Practices Act 1974 and similar laws in each state and territory provide the owner under
certain circumstances with certain minimum statutory rights in relation to your Rheem water heater. This warranty must be read
subject to that legislation and nothing in this warranty has the effect of excluding, restricting or modifying those rights.
FOR SERVICE TELEPHONE
RHEEM AUSTRALIA PTY LTD
131 031 AUSTRALIA
A.B.N. 21 098 823 511
0800 657 335 NEW ZEALAND
or refer local Yellow Pages
NOTE: Every care has been taken to ensure accuracy in preparation of this publication. No liability can be
accepted for any consequences, which may arise as a result of its application.
122042E
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