Rheem | 862 series | Specifications | Rheem 862 series Specifications

Owner’s Guide
and
Installation Instructions
Continuous Flow
Gas Indoor Water Heater
862 series
627 models
INSTALLER:
The ONLY suitable flue parts are certified Rheem coaxial flue components
carrying the following label:
DO NOT use any other type of flue parts.
Carefully follow the Installation Instructions.
OPERATOR:
DO NOT OPERATE THIS WATER HEATER:
Unless a certified Rheem coaxial flue system, venting to the outside through a certified Rheem
terminal, is installed in accordance with the Installation Instructions.
If a loud continued vibration occurs during operation
This water heater must be installed and serviced by a qualified person.
Please leave this guide with a responsible officer.
Warning: Upon completion of the installation and commissioning of the water heater, leave this guide
with the householder or a 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.
PATENTS
This water heater may be protected by one or more patents or registered designs in the name of
Rheem Australia Pty Ltd or Paloma Co., Ltd.
Rheem Australia Pty Ltd is the supplier of the Rheem range of continuous flow gas water heaters,
manufactured by Paloma Co., Ltd., a world leader in water heater technology and manufacture.
TRADEMARKS
® Registered trademark of Rheem Australia Pty Ltd.
™ Trademark of Rheem Australia Pty Ltd.
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.
CONTENTS
RESPONSIBLE OFFICER - We recommend you read pages 4 to 14.
The other pages are intended for the installer but may be of interest.
About Your Water Heater ............................................................................................................ 4
Water Supplies........................................................................................................................... 11
Save A Service Call ................................................................................................................... 12
Installation – Water Heater ....................................................................................................... 15
Connections – Plumbing .......................................................................................................... 24
Flueing ........................................................................................................................................ 26
Connections – Electrical ........................................................................................................... 43
Multiple Installations ................................................................................................................. 44
Commissioning .......................................................................................................................... 47
Draining The Water Heater ....................................................................................................... 54
Warranty ..................................................................................................................................... 55
3
ABOUT YOUR WATER HEATER
WATER HEATER APPLICATION
This water heater is designed for the purpose of heating potable water. Its use in an application other than
this may shorten its life.
MODEL TYPE
®
The Rheem continuous flow gas water heater model you have chosen is for indoor installation only. This
model has an extended manufacturer‟s warranty (refer to the Rheem warranty on page 55).
The water heater has a maximum preset outlet temperature setting of:
862 series
82°C
If a temperature controller is connected to the water heater, this will
override the preset outlet temperature setting and the maximum
temperature setting will be:
Kitchen controller connected
60°C
Bathroom controller only connected
50°C
WATER HEATER OPERATION
The water heater operates automatically, heating water as it passes
through the water heater. When a hot tap is opened, the gas burners
ignite to provide immediate heating of the water. The heat produced by
the burner is transferred to the water through the heat exchanger. The
water is heated to a constant temperature by the automatic adjustment
of the gas supply to the burner to suit the water flow rate. The gas
burners extinguish when the hot tap is closed.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
GAS BOOSTING FOR A SOLAR WATER HEATER
The 862 series water heater may be installed as an in-series gas booster to a solar water heater. For
information relating to the function and operation of the solar water heater, refer to the Owner‟s Guide and
Installation Instructions supplied with the solar water heater.
Water stored in the solar storage tank passes through the in-series gas booster when a hot tap is opened.
Solar heated water can reach temperatures up to 70°C to 80°C for a Premier Loline and Loline pumped
system and a Hiline thermosiphon system and possibly higher for a Premier Hiline thermosiphon system.
The in-series gas booster is for heating water at times of low solar energy gain, such as during cloudy or
rainy weather, or during colder months. The in-series gas booster operates automatically.
When the solar heated water is at a temperature higher than 2°C below a water heater preset outlet
temperature setting of up to 75°C (i.e. 68°C or above if the preset outlet temperature setting is 70°C) or
higher than 4°C below a water heater preset outlet temperature setting of 82°C, the flow passes through the
in-series gas booster without boosting. When the solar heated water is at a temperature lower than 2°C
below a water heater preset outlet temperature setting of up to 75°C (i.e. below 68°C if the preset outlet
temperature setting is 70°C) or lower than 4°C below a water heater preset outlet temperature setting of
82°C, the in-series gas booster heats the water to a minimum temperature of the preset outlet temperature
setting.
4
ABOUT YOUR WATER HEATER
MAINS PRESSURE
The water heater is designed for direct connection 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 140 kPa for the rated flow and performance to be achieved.
HOW HOT SHOULD THE WATER BE?
The water heater has a maximum preset outlet temperature setting
of 82°C. For applications requiring sanitising temperatures, the
outlet temperature should be set at 82°C. The minimum
recommended preset outlet temperature setting is 60°C.
maximum preset outlet
temperature setting (82°C)
If the water heater is installed as part of a circulated hot water flow
and return system in a building, the preset outlet temperature setting
of the water heater must be set to at least 60°C.
If a controller is not installed, the water heater heats the water to the
preset outlet temperature setting. The factory preset outlet
temperature setting is:
862 series
60°C
60°C
70°C
for a single water heater
®
as part of a Multipak system
®
as part of a Commpak system
minimum recommended preset
outlet temperature setting
maximum recommended
supply temperature to
bathrooms, ensuites and
public areas
Note: The preset outlet temperature setting of this water heater
cannot be adjusted by the householder. The setting can only be
adjusted by the installer, Rheem Service or their nearest Accredited
Service Agent.
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. When this water heater is used as an in-series booster for a solar water heater it can satisfy
this AS 3498 requirement provided it is energised, the booster preset outlet temperature setting is 70°C or
higher, and that a remote temperature controller is not used.
Warning: Temperature controllers must not be fitted to this water heater (862 series) if it is installed as
an in-series gas booster with a solar water heater system or if a Water Star water heater is installed because
water at a temperature much higher than the controller setting can be delivered. If a solar or Water Star
water heater has been installed to an existing water heater installation, then all controllers must be
disconnected and removed.
If this water heater is installed as part of a solar water heater system, the system can deliver water at
temperatures from 58°C up to 80°C and possibly higher depending upon the model of solar water heater
installed.
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 be required by regulations that an approved temperature limiting device be fitted
into the hot water piping to ablution, bathing and public areas when an 862 series water heater is installed.
This will keep the water temperature below the maximum permitted by AS/NZS 3500.4 to these areas. The
risk of scald injury will be reduced and if no controllers are installed and the preset outlet temperature setting
has not been adjusted below 55°C or if a Kitchen controller is installed, still allow hotter water to the kitchen,
laundry and other areas requiring sanitising temperatures.
5
ABOUT YOUR WATER HEATER
WARNING
This water heater is only intended to be operated by persons who have the experience or the knowledge and
the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical,
sensory or mental capabilities i.e. the infirm, or by children. Children should be supervised to ensure they do
not interfere with the water heater.
The water heater uses 240 Volt AC electrical power for operation of the control systems and the combustion
fan. The removal of the front panel will expose 240 V wiring. It must only be removed by a qualified person.
The power lead from the water heater must be plugged into an electrical outlet. Take care not to touch the
power plug with wet hands.
SAFETY
®
This water heater is supplied with temperature sensors, a FlameSafe protection system and a 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.
If the power supply cord or plug is damaged, it must be replaced by a qualified person in order to avoid a
hazard. The power supply cord and plug must be replaced with a genuine replacement part available from
Rheem. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection.
Warning: For continued safety of this water heater it must be installed, operated and maintained in
accordance with the Owner‟s Guide and Installation Instructions.
The Rheem warranty may not cover faults 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 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 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.
6
ABOUT YOUR WATER HEATER
PRECAUTIONS
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed over a safe tray. Construction, installation and draining of a safe tray must comply with
AS/NZS 3500.4 and all local codes and regulatory authority requirements.
The water heater must be maintained in accordance with the Owner‟s Guide and Installation Instructions.
Refer to “General Maintenance” on page 7, “Minor Six Month Maintenance” on page 7 and “Annual Service”
on page 7.
If this water heater is to be used where an uninterrupted hot water supply is necessary for your application or
business you should ensure that you have back up redundancy within the hot water system design. This
should ensure the continuity of hot water supply in the event that this water heater were to become
inoperable for any reason. We recommend you seek advice from your plumber or specifier about your needs
and building back up redundancy into your hot water supply system.
GENERAL MAINTENANCE
The jacket of the water heater can be cleaned with a soft cloth and warm mild soapy water. Under no
circumstances should abrasive materials or powders be used.
Condensate Trap
A condensate trap may be installed as part of a condensate drain line from the secondary flue system.
Regularly check a condensate trap, if one is installed, to ensure it is filled with water. If a trap is dry or the
water level is low, then a trap must be refilled.
To check and / or refill a trap with water, remove the clamp securing the hose of the condensate trap to the
spigot on the flue outlet. Remove the hose from the spigot and fill the condensate trap with water. Reconnect
the hose to the spigot. Ensure the hose is not kinked when reconnected.
Warning: Failure to fill a Condensate Trap with water may cause flue gases to escape through the drain
line.
MINOR SIX MONTH MAINTENANCE
It is recommended minor maintenance be performed every six months by the dwelling occupant.
The minor maintenance includes:
Check the water level in the condensate trap (if one is installed). Refer to “Condensate Trap” on page 7.
Check the drain line from the safe tray (if one is installed) is not blocked.
ANNUAL SERVICE
For safe and efficient operation, it is recommended an annual service be conducted on the water heater.
Warning: Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem
Service or their nearest Accredited Service Agent.
Note: The annual service and routine replacement of any components, if required, are not included in the
Rheem warranty. A charge will be made for this work. Only genuine replacement parts should be used on
this water heater.
The annual service includes the following actions:
Check and if necessary adjust the gas pressure.
Check the operation of and clean the burner.
Check the water level in the condensate trap (if one is installed).
Visually check the unit for any potential problems.
Inspect all connections.
Check the drain line from the safe tray (if one is installed) is not blocked.
7
ABOUT YOUR WATER HEATER
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
Turn off the controllers(s) (if fitted) by pressing the on / off button.
The light in the on / off button will go out and the priority light (standard controller) or the ACTIVE light
(Deluxe controller), if it is on, will go out.
Switch off the electrical supply at the power outlet to the water heater if there is no risk of freezing
conditions occurring (refer to note below).
Close the gas isolation valve at the inlet to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
Note: If there is a risk of freezing conditions, the electrical supply to the water heater should not be switched
off unless the water heater is drained, otherwise damage could result (refer to “Frost Protection” on page 9
and “Draining the Water Heater” on page 9).
TO TURN ON THE WATER HEATER
Screw in the drain plugs at the cold water inlet and hot water outlet of the water heater if the water
heater has been drained.
Open all of the hot taps in the house (don‟t forget the shower).
Open the cold water isolation valve fully at the inlet to the water heater.
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Open the gas isolation valve fully 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.
Turn on a controller, if one is fitted, by pressing the on / off button.
The light in the on / off button and the priority light (standard controller) or ACTIVE light (Deluxe
controller) will both glow.
The water heater will operate automatically when you open a hot tap.
GOING ON HOLIDAYS
If you are going on holidays, it is not necessary to turn the water heater off. If it is necessary to turn off the
water heater, refer to “To Turn Off The Water Heater” on page 8.
8
ABOUT YOUR WATER HEATER
FROST PROTECTION
The water heater has a frost protection system. The frost protection system will protect the water heater from
damage, by preventing ice forming in the waterways of the water heater, in the event of freezing conditions
occurring.
Notes:
The frost protection system will be rendered inoperable if electrical power is not available at the water
heater. Damage caused by freezing due to the unavailability of power at the water heater is not covered
by the Rheem warranty (refer to “Terms of the Rheem Warranty” on page 55).
If it is necessary to switch the power off to the water heater and there is a risk of freezing, then it is
necessary to drain the water heater (refer to “Draining the Water Heater” on page 9).
Pipe work to and from the water heater must be adequately insulated to prevent freezing.
The water heater is not suitable for installation in areas where the ambient temperature falls below -20°C
(including wind chill factor).
Refer to “Terms of the Rheem Warranty” on page 55.
DRAINING THE WATER HEATER
Turn off the water heater (refer to “Turn Off The Water Heater” on page 8).
Open a hot tap (preferably the shower outlet).
Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the underside of
the water heater.
Water will drain from the water heater.
When water stops flowing from the water heater, close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on again.
9
ABOUT YOUR WATER HEATER
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 15 to 23. The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4, AS 5601 or AS/NZS 5601.1, as applicable under local
regulations, and all local codes and regulatory authority requirements.
Warning: Temperature controllers must not be fitted
an in-series gas booster with a solar water heater system
water at a temperature much higher than the controller
water heater has been installed to an existing water
disconnected and removed.
to this water heater (862 series) if it is installed as
or if a Water Star water heater is installed because
setting can be delivered. If a solar or Water Star
heater installation, then all controllers must be
The pipe work between the solar storage tank (if one is installed) and the in-series gas booster has a
minimum recommended pipe size of DN20, MUST BE of copper and be fully insulated in accordance with
the requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. The
insulation must be fitted up to the connections on both the solar storage tank and the in-series gas booster.
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Plumbing Industry Commission. This water heater must be
installed by a licensed person as required by the Victorian Building Act 1993.
Only a licensed person will give you a Compliance Certificate, showing that the work complies with all the
relevant Standards. Only a licensed person will have insurance protecting their workmanship for 6 years.
Make sure you use a licensed person to install this water heater and ask for your Compliance Certificate.
DOES THE WATER CHEMISTRY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some water chemistries may have
detrimental effects on the water heater, its components and fittings. Refer to “Water Supplies” on page 11.
If you are in a known harsh water area or you are not sure of your water chemistry, have your water checked
against the conditions described on page 11.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer‟s warranty (refer to page 55). There are a number of
factors that will affect the length of service the water heater will provide. These include but are not limited to
the water chemistry, the water pressure, the water temperature (inlet and outlet) and the water usage
pattern. Refer to “Precautions” on page 7.
10
WATER SUPPLIES
This water heater must be installed in accordance with this advice to be covered by the Rheem
warranty.
This water heater is manufactured to suit the water conditions of most public reticulated water supplies.
However, there are some known water chemistries which can have detrimental effects on the water heater
and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to
obtain information from your local water supply authority. This water heater should only be connected to a
water supply which complies with these guidelines for the Rheem warranty to apply.
CHANGE OF WATER SUPPLY
The changing or alternating from one water supply to another can have a detrimental effect on the operation
and / or life expectation of a heat exchanger in a continuous flow water heater.
Where there is a changeover from one water supply to another, e.g., a rainwater tank supply, bore water
supply, desalinated water supply, public reticulated water supply or water brought in from another supply,
then water chemistry information should be sought from the supplier or it should be tested to ensure the
water supply meets the requirements given in these guidelines for the Rheem warranty to apply.
SATURATION INDEX
The saturation index (SI) 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. Where the saturation
index is less than –1.0, the water is very corrosive and the Rheem warranty does not apply to a copper heat
exchanger in a continuous flow water heater.
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, the Rheem warranty does not apply to a copper heat exchanger
in a continuous flow water heater.
Water which is scaling may be treated with a water softening device to reduce the saturation index of the
water.
Refer to the Saturation Index chart on page 11.
no warranty applies to a:
-continuous flow copper heat exchanger
no warranty applies to a:
-continuous flow copper heat exchanger
SATURATION INDEX (SI)
GAS CONTINUOUS FLOW WATER HEATERS
WITHIN WARRANTY
SPECIFICATION
-1.0
very corrosive
0
+0.4
SATURATION INDEX
(calculated @ 80°C water temperature)
scaling
corrosive
11
+0.8
very scaling
SAVE A SERVICE CALL
Check the items below before making a service call. You will be charged for attending to any condition or
fault, which is not related to manufacture or failure of a part (refer to “Terms of the Rheem Warranty” on
page 55).
NO DISPLAY ON THE CONTROLLER (IF FITTED)
Is the controller turned on?
Press the on / off button.
Is the water heater plugged in and the power outlet switched on?
Is power available in the premises?
Try using another electrical appliance.
COLD WATER FROM THE HOT TAP
Is the controller turned on?
Press the on / off button.
Close the hot tap, wait 10 seconds and open the hot tap again.
Is the hot tap open enough?
The burners will not light if the flow rate is less than 2.0 L / min.
Is the water heater plugged in and the power outlet switched on?
Is power available in the premises?
Try using another electrical appliance.
Is the isolation valve in the gas line open?
Is there a gas supply to the rest of the premises?
Try lighting another gas appliance.
Has the gas line been purged of air after installation?
Refer to your plumber.
WATER IS TOO HOT OR NOT HOT ENOUGH
Is the preset outlet temperature of the water heater higher than required?
Does the controller you are using have priority?
NO WATER FROM THE HOT TAP
No flow of water from the hot tap may indicate a restriction in or failure of the cold water supply to the water
heater. Check for water flow at other taps and that the cold water isolation valve (refer to page 24) is fully
open.
WATER FLOW FLUCTUATES
More than two or three taps in use at the same time may cause a decrease in the hot water flow from the
taps. This can also be evident if the water heater has been installed as an in-series gas booster to a solar
water heater and the solar heated water is at a low temperature.
Are there more than two or three taps open, or are appliances such as a dishwasher or washing
machine, in use at the same time?
Ensure only two or three taps or appliances are on at the one time.
Check the flow of the water from one tap, e.g., the shower.
The shower should be adjusted so the hot tap is fully open.
12
SAVE A SERVICE CALL
GAS BOOSTER OPERATING TOO FREQUENTLY
If the water heater is installed as an in-series gas booster to a solar water heater, you may find that the water
heater operates more frequently than expected. This will occur when the solar heated water temperature is
lower than 2°C below a water heater preset outlet temperature setting of up to 75°C (i.e. below 68°C if the
preset outlet temperature setting is 70°C) or lower than 4°C below a water heater preset outlet temperature
setting of 82°C, which may be experienced during periods of low solar energy gain or if there has been
heavy hot water usage. Factors to consider are:
Hot tap not used recently
If a hot tap has not been used for a while, the water in the pipe work between the solar storage tank and
the in-series gas booster may have cooled down. The in-series gas booster will sense the cooler water
and this will cause the burners on the water heater to ignite and boost the water temperature when a hot
tap is first turned on. The burners will extinguish when solar heated water at a temperature higher than
2°C below a water heater preset outlet temperature setting of up to 75°C (i.e. 68°C or above if the preset
outlet temperature setting is 70°C) or higher than 4°C below a water heater preset outlet temperature
setting of 82°C from the solar storage tank reaches the in-series gas booster (refer also to “Fan
Continues to Run after Water Heater Operation Stops” on page 13).
Insufficient sunlight
Insufficient sunlight due to cloudy weather during hotter months or low solar energy contribution in
colder months may mean the in-series gas booster operates more often.
Collectors shaded
If trees or other objects shade the solar collectors or if the glass is dirty, the effectiveness of the solar
collectors will be greatly reduced. Have the trees trimmed or the solar collectors relocated if the
obstruction is permanent or clean the collector glass.
Ensure the glass on your solar collectors is free of dust, salt spray or any other matter, which may
reduce the effectiveness of the solar collectors. If the collector glass becomes dirty, hose down or if the
solar collectors are accessible, wash the collector glass with water and a soft brush when the solar
collectors are cool.
Collector area is too small
For most installations, the number of solar collectors recommended in Rheem literature has been
proven to provide the required solar energy to meet the average family needs. However, in some
circumstances, it may be necessary to install an additional solar collector.
Are you using more hot water than you think?
Are outlets (especially the showers) 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 hot water usage. As you have installed an energy saving appliance, energy saving should also be
practised. Adjust your water usage pattern to take advantage of maximum solar gains.
Have your plumber install a flow control valve to each shower outlet, basin and sink to reduce water
usage.
Water heater size
Do you have the correct size water heater for your requirements?
The sizing guide in the sales literature and on the Rheem website (www.rheem.com.au) suggests
average sizes that may be needed.
FAN CONTINUES TO RUN AFTER WATER HEATER OPERATION STOPS
It is the normal operation of the water heater for the fan to continue running after heating of the water is
finished. The fan may run for up to six minutes after the burners extinguish, to prepare for the next ignition.
SMELL OF FLUE GASES
The flue system may incorporate a condensate drain and condensate trap. A condensate trap must be filled
with water to prevent the escape of flue gases. If the water has evaporated flue gases may escape.
Remove the clamp securing the hose of the condensate trap to the spigot on the flue outlet. Remove the
hose from the spigot and fill the condensate trap with water. Reconnect the hose to the spigot. Ensure the
hose is not kinked when reconnected.
13
SAVE A SERVICE CALL
CLOUDS OF WHITE ‘VAPOUR’ FROM THE FLUE TERMINAL
During the heating cycle, it is not unusual to see water vapour clouds
steaming from the flue terminal, particularly on cold days. This is
normal operation of the water heater.
PRESSURE RELIEF VALVE DISCHARGING
A pressure relief valve is incorporated into the water heater controls.
This valve protects the water heater, by allowing water to escape, in
the event of excessive pressure build up in the waterways.
Normal operation
A small volume of water may discharge from the bottom of the
water heater when a hot tap is suddenly closed.
Continuous dribble
A continuous dribble may indicate the water supply pressure is
above the design pressure for the water heater. If so, a pressure
limiting valve must be installed on the cold water supply pipe to
the water heater (refer to “Mains Water Supply” on page 17).
ERROR CODE
The water heater provides a diagnostic error code in the event of an interruption to its operation. The error
code is displayed on the controller(s) (if installed) and on the OK MONITOR on the front of the water heater
as a numerical value. If an error code appears:
Close the hot tap, turn off the controller(s) and switch off the
electrical supply to the water heater.
Check the gas isolation valve at the gas inlet to the water heater is
fully open.
Wait 5 minutes, then switch on the electrical supply to the water
heater, turn on a controller and open a hot tap.
If the error code persists, take note of the numerical code, turn off the
hot tap and turn off the controller(s). Phone Rheem Service or their
nearest Accredited Service Agent to arrange for inspection.
HIGHER THAN EXPECTED GAS BILLS
Should you at any time, feel your gas account is too high, we suggest
you check the following points:
Are outlets (especially the showers) 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 hot water usage.
Have your plumber fit a flow control valve to each shower outlet,
basin and sink to reduce water usage.
Is the in-series gas booster operating too frequently?
Refer to “Gas Booster Operating Too Frequently” on page 13.
Has there been an increase in hot water usage?
An increase in hot water usage will result in an increase in water heater operation.
Has your water heating tariff rate been increased by your gas retailer since your previous account?
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE,
PHONE RHEEM SERVICE OR THEIR NEAREST ACCREDITED SERVICE AGENT.
14
INSTALLATION – WATER HEATER
THIS WATER HEATER IS FOR INDOOR INSTALLATION ONLY.
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)
INSTALLATION STANDARDS
The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4, AS 5601 or AS/NZS 5601.1, as applicable under local
regulations, and all local codes and regulatory authority requirements.
All packaging materials must be removed from the water heater prior to its installation.
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable
water. Its use in an application other than this may shorten its life.
If this water heater is to be used where an uninterrupted hot water supply is necessary for the application or
business, then there should be redundancy within the hot water system design. This should ensure the
continuity of hot water supply in the event that this water heater was to become inoperable for any reason.
We recommend you provide advice to the system owner about their needs and building backup redundancy
into the hot water supply system.
The 862 series of water heater may be installed as an in-series gas booster to a solar water heater. For
information relating to the function and operation of the solar water heater, refer to the Owner‟s Guide and
Installation Instructions supplied with the solar water heater.
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. When this water heater is used as an in-series booster for a solar water heater it can satisfy
this AS 3498 requirement provided it is energised, the booster preset outlet temperature setting is 70°C or
higher, and that a remote temperature controller is not used.
WATER HEATER LOCATION
The water heater should be installed close to the most
frequently used outlet and its position chosen with safety and
service in mind. If this water heater is part of a solar water
heater system, it should also be installed close to the solar
storage tank. Make sure people (particularly children) will not
touch the flue outlet. The flue outlet and air inlet must be
clear of obstructions.
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 entire front panel can be
removed for service. You must be able to read the
information on the rating plate. Remember you may have to
take the entire water heater out later for servicing.
There are also special requirements in AS 5601 and AS/NZS 5601.1 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.
15
INSTALLATION – WATER HEATER
This water heater must be installed vertically upright with the water, gas and power connections on the
underside, pointing toward the floor. The back of the water heater can be either against a wall or supported
by a frame.
Note: The water heater must be well secured to the wall or frame using two fasteners each at the top and
bottom of the unit (refer to page 22 for mounting hole positions and weight of the water heater). Use the
screws provided only if they are suitable for the wall or frame type. Otherwise select and use alternative
fasteners suitable for the application. The fasteners must be capable of bearing the full weight of the water
heater so it may not work loose nor impose any load on the gas and water pipe work connected to the water
heater. Refer to the fastener manufacturer‟s information and recommendations for the type of fastener to use
for the wall or frame type and load bearing requirements.
For a single water heater installation, refer to the typical installation diagram on page 23.
For a multiple water heater installation, refer to “Multiple Installations” on page 44 and the typical installation
diagram on page 45.
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.
VENTILATION
This water heater is to be installed with a Rheem coaxial flue system. The kit enables a room sealed
installation, drawing air for combustion from outside of the building.
The ventilation of a room or an enclosure such as a cupboard, where the water heater is installed must
comply with the requirements of AS 5601 or AS/NZS 5601.1, as applicable under local regulations.
SECONDARY FLUE
A secondary flue must be installed with an indoor water heater to discharge combustion products to outside
the building. The water heater MUST ONLY be installed with a certified Rheem coaxial flue system.
Where more than one water heater is installed, each water heater must be individually flued using a certified
Rheem coaxial flue system. A common flue system MUST NOT be used.
Refer to “Flueing” on page 26 for details on the flue requirements and installation details.
SAFE TRAY
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed over a safe tray. Construction, installation and draining of a safe tray must comply with
AS/NZS 3500.4 and all local codes and regulatory authority requirements.
PIPE COVER
The pipe work to the water heater can be housed within a pipe cover. A pipe cover kit (PN 299848) is
available for such an installation. Refer to the installation instructions which accompany the pipe cover kit.
FROST PROTECTION
The water heater has a frost protection system. The frost protection system will protect the water heater from
damage, by preventing ice forming in the waterways of the water heater, in the event of freezing conditions
occurring.
The frost protection system will be rendered inoperable if electrical power is not available at the water heater.
Damage to the water heater caused by freezing of the pipe work to or from the water heater is not covered
under the Rheem warranty. Refer to AS/NZS 3500.4 for precautions to be taken for installations in frost
prone areas. The water heater is not suitable for installation in areas where the ambient temperature falls
below -20°C (including wind chill factor).
The cold water line to the water heater must be insulated with suitable thickness insulation if freezing
conditions are likely to occur. The insulation must be fitted to the underside of the water heater and be
weatherproof and UV resistant if exposed.
16
INSTALLATION – WATER HEATER
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure
limiting valve that does not have non return valve characteristics (such as an RMC PSL series valve) is
required and should be fitted as shown in the installation diagram (refer to page 24).
27
Model
Relief valve setting
1750 kPa
Max. mains supply pressure
1000 kPa
Min. mains supply pressure *
140 kPa
* minimum water supply pressure required to achieve the
rated flow and performance
Notes:
It is not recommended to install this water heater with a low pressure water supply.
A minimum water supply pressure of 140 kPa is required to achieve the rated flow and performance of
the water heater.
If this water heater is installed as an in-series gas booster for a solar water heater, the maximum water
supply pressure to the solar water heater, without an expansion control valve (ECV), is generally
800 kPa, however it may be less than this for some models. Refer to the Owner‟s Guide and Installation
Instructions supplied with the solar water heater for maximum mains supply pressure details.
If sludge or foreign matter is present in the water supply, it is recommended a suitable filter be
incorporated in the cold water line to the water heater.
This water heater is not suitable for connection to bore water or spring water unless a water treatment
device is fitted.
Refer to “Water Supplies” on page 11 for further information on water chemistry.
PRESET OUTLET TEMPERATURE SETTING
The factory preset outlet temperature setting of the water heater is:
862 series
60°C
60°C
70°C
for a single water heater
as part of a Multipak system
as part of a Commpak system
It is usually not necessary to check or adjust the factory preset outlet temperature setting of the water heater,
unless the customer or application has a particular requirement for this to be done.
For applications requiring sanitising temperatures, such as a commercial kitchen, it will be necessary to
adjust the preset outlet temperature setting to 82°C.
If the water heater is installed as part of a circulated hot water flow and return system in a building, the preset
outlet temperature setting must be set to at least 60°C. If the water temperature decreases by more than 5°C
through a circulated hot water flow and return system due to heat loss in the ring main, the preset outlet
temperature setting of the water heater should be set to at least 65°C.
Gas Booster for a Solar Water Heater
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. When this water heater is used as an in-series booster for a solar water heater it can satisfy
this AS 3498 requirement provided it is energised, the booster preset outlet temperature setting is 70°C or
higher, and that a remote temperature controller is not used.
It will be necessary to check and if required to adjust the preset outlet temperature setting of the continuous
flow water heater when:
it is installed as an in-series gas booster to a solar water heater
it is an existing continuous flow water heater and a solar water heater is then installed.
Refer to “Preset Outlet Temperature Setting” on page 51.
17
INSTALLATION – WATER HEATER
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 an 862 series water
heater and the hot water outlets in any ablution and public areas such as a bathroom, ensuite 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.
The temperature limiting device used with a continuous flow gas water heater should have:
a specified „minimum temperature differential‟ between the hot water inlet and the tempered water outlet
of no greater than 10°C, and
a specified „maximum permitted pressure variation‟ in the supply between the hot water inlet and the
cold water inlet of no less than 15%.
Refer to the specifications of the temperature limiting device.
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
and pressure limiting valve 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 of an equal pressure setting may be required prior to the temperature limiting
device.
Two Temperature Zones Using a Temperature Limiting Device
Gas Booster for a Solar Water Heater
The temperature limiting device used with an 862 series in-series gas booster as part of a solar water heater
installation must have the additional capability of receiving a hot water supply temperature of up to 99°C if
the solar water heater does not have an over temperature protection system to limit the water to no greater
LEGEND
than 90°C, such as the
Rheem Premier Hiline thermosiphon closed circuit system.
Warning: Temperature controllers must not be fitted to this water heater (862 series) if it is installed as
an in-series gas booster with a solar water heater system is installed because water at a temperature much
higher than the controller setting can be delivered. If a solar water heater has been installed to an existing
water heater installation, then all controllers must be disconnected and removed.
18
INSTALLATION – WATER HEATER
Where a temperature limiting device is installed adjacent to the in-series gas booster, the cold water line to
the temperature limiting device can be branched off the cold water line either before or after the isolation
valve and pressure limiting valve to the solar storage tank, but it MUST BE before the non return valve prior
to an open circuit direct system. The cold water line to the temperature limiting device can be branched off
the cold water line either before or after the non return valve prior to a closed circuit indirect system. 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 solar storage tank.
Warning: A non return valve MUST BE installed on the cold water line to the solar storage tank AFTER
the cold water branch to a temperature limiting device prior to an open circuit direct system. Due to the
higher water temperatures generated under certain conditions in the solar collectors of an open circuit direct
solar water heater, an additional effective back-flow prevention device also should be used as an extra
safeguard. Valve manufacturer RMC recommends Dual Check Valve model N7150, as being suitable for this
application.
If a combination isolation valve and non return valve (duo or trio valve) is installed on the cold water line to
an open circuit direct solar water heater and the cold water line to the temperature limiting device branches
off after this valve, then a second non return valve must be installed between the cold water branch and the
solar storage tank. Due to the higher water temperatures generated under certain conditions in the solar
collectors of an open circuit direct pumped solar water heater, an effective back-flow prevention device
should be used as the second non return valve as an extra safeguard. Valve manufacturer RMC
recommends Dual Check Valve model N7150, as being suitable for this application.
If a pressure limiting valve is installed on the cold water line to the solar 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 of an equal pressure setting may be required prior to the
temperature limiting device.
from solar
storage tank
to solar
storage tank
In-series Gas Booster as part of an Open Circuit Direct Solar Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device
LEGEND
from solar
storage tank
to solar
storage tank
In-series Gas Booster as part of a Closed Circuit Solar Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device
LEGEND
19
INSTALLATION – WATER HEATER
CIRCULATED HOT WATER FLOW AND RETURN SYSTEM
A Rheem 862 627 model continuous flow water heater can be installed as part of a circulated hot water flow
and return system in a building.
Notes:
the preset outlet temperature setting of the water heater must be set to at least 60°C.
Water should not be circulated from a water heater with a temperature setting of less than 60°C.
the preset outlet temperature setting of the water heater should be set to at least 65°C if the water
temperature decreases by more than 5°C through a circulated hot water flow and return system due to
heat loss in the ring main.
temperature controllers should not be installed with this water heater as part of a circulated hot water
flow and return system, including when installed as part of an Ez-Link System dual installation.
The circulator must be:
sized and set to provide a minimum flow rate of 3.0 L/min through the recirculated hot water flow and
return system, and
either thermostatically and / or timer controlled.
The circulator must not be set to operate continuously, i.e. 24 hours per day.
Temperature Limiting Device
A temperature limiting device cannot be installed in circulated hot water flow and return pipe work. 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.
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.
20
INSTALLATION – WATER HEATER
Circulated Hot Water Flow and Return
Continuous Flow Gas Water Heater
LEGEND
LEGEND
from solar
storage tank
Circulated Hot Water Flow and Return
In-series Gas Booster as part of a Solar Water Heater Installation
LEGEND
REDUCING HEAT LOSSES
The hot water line from the water heater and the pipe work between the solar storage tank, if one is installed,
and the in-series gas booster must be insulated in accordance with the requirements of AS/NZS 3500.4. The
insulation must be weatherproof and UV resistant if exposed. The insulation must be fitted up to the
connections on the both the underside
of the water heater and the solar storage tank.
LEGEND
21
INSTALLATION – WATER HEATER
DIMENSIONS AND TECHNICAL DATA
351
240
331
130
MOUNTING HOLES
2x TOP
2x BOTTOM
131
Ø127
Ø127
17
672 650
49
21
GAS
CONNECTION
HOT WATER OUTLET
POWER LEAD CONNECTION
53
707
38
763
10 to 40
COLD WATER INLET
132
127
POWER LEAD
CONNECTION
GAS
CONNECTION
5
HOT WATER
OUTLET
240
107
86
COLD WATER
INLET
28
ELECTRONIC CONTINUOUS FLOW
862 627
GAS WATER HEATERS
INTERNAL
- 862, 864, 866 SERIES
litres / min627 MODELS
16.7
Model
Rated delivery
(@ 40°C rise)
Recovery
(@ 25°C rise)
Mass
119
Empty (unpackaged)
litres / min
27
kg
24
SK7166-1 REV_DD 11/12
Hourly Gas
Consumption
(MJ)
Min Gas Pressure
(kPa)
minimum
maximum
Max Gas Pressure
(kPa)
Model
627
627
627
627
627
Natural
Propane
205
205
1.13
2.75
0.165
0.252
0.900
1.550
3.50
3.50
Gas Details
Test Point Gas Pressure (kPa)
Model numbers: N = Natural, P = Propane.
Letter N or P is included in the model number, e.g. 862627NF, to denote gas type.
F = Frost protection.
Technical data is subject to change.
22
INSTALLATION – WATER HEATER
TYPICAL INSTALLATION – INDOOR LOCATION
23
CONNECTIONS – PLUMBING
All plumbing work must be carried out by a qualified person and in compliance with the Standard
AS/NZS 3500.4 and all local codes and regulatory authority requirements.
All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or
AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority
requirements.
CONNECTION SIZES
Model
862 627
Hot water connection
R 3/4
Cold water connection
R 3/4
Gas inlet connection
R 3/4
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.
A full flow gate valve or ball valve must be installed on the
cold water line or solar preheat water line to the water
heater. A non return valve or stop tap must not be
installed. An acceptable arrangement is shown in the
diagram. Refer also to “Hot Water Delivery” on page 18
and to “Mains Water Supply” 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.
Insulation used on the cold and hot water lines must
extend up to the cold water inlet and hot water outlet of the
water heater.
GAS
COCK
HOT
WATER
GAS
POWER
CORD
PRESSURE
LIMITING
VALVE
(not required if water
heater is installed as
an inline gas booster
to a solar water heater)
COLD OR SOLAR
PREHEAT WATER
GATE VALVE
OR
BALL VALVE
Water
Heater
WATER ANDGas
GAS
CONNECTION
DETAIL
Cold (or Solar Preheat) and Hot Water
and Gas Connection Details
Notes:
It is essential all pipe connections be correctly aligned, otherwise component connections within the
water heater may be strained and / or components themselves misaligned. It is recommended also,
wherever possible, pipe connections be made at the water heater first and final pipe runs be made in
soft copper pipe to allow some adjustment for misalignment.
Use the spanner flats on the water heater fittings and take care to avoid twisting the water inlet and
outlet pipes inside the jacket.
The maximum supply temperature to the water heater when used as an in-series gas booster for a solar
water heater should not exceed 80°C.
24
CONNECTIONS – PLUMBING
PIPE SIZES
The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing
the most suitable pipe size to ensure adequate flow for each individual application. Reference to the
technical specifications of the water heater and local regulatory authority requirements must be made.
To achieve true mains pressure operation, the cold water line to the water heater should be the same size or
bigger than the hot water line from the water heater.
The minimum recommended cold pipe or solar preheat pipe and hot pipe size is DN20 for a single water
heater installation. If more than one water heater is installed, refer to the table of minimum header pipe sizes
on page 44.
IN-SERIES BOOSTER
The pipe work between the solar storage tank (if one is installed) and the in-series gas booster has a
minimum recommended pipe size of DN20, MUST BE of copper and be fully insulated in accordance with
the requirements of AS/NZS 3500.4.
The insulation must be weatherproof and UV resistant if exposed. The insulation must be fitted up to the
connections on both the solar storage tank and the in-series gas booster. A full flow isolation valve must be
installed on the water line to the in-series gas booster.
GAS INLET
The gas connection is made at the underside of the water heater. The pipe work must be cleared of foreign
matter before connection and purged before attempting to operate the water heater. An isolation valve and
disconnection union must be installed to allow servicing and removal of the water heater (refer to the
diagram on page 24).
Note: Refer to the Gas Installations Standard AS 5601 or AS/NZS 5601.1 for the correct method of sizing
the gas supply pipe to the water heater. The pipe size selection must take into account the high gas input of
this water heater (refer to table on page 22) as well as all of the other gas appliances in the premises.
Warning: Always isolate the water heater before pressure testing the gas supply system. Disconnect the
water heater after the isolation valve to prevent the risk of serious damage to the gas control. The Rheem
warranty does not cover damage of any nature resulting from failure to observe this precaution. Refer to
rating label for gas types and pressures.
25
FLUEING
SECONDARY FLUE
A secondary flue must be installed with an indoor water heater to discharge combustion products to outside
the building. The water heater MUST ONLY be installed with certified Rheem coaxial flue components
carrying the label opposite. DO NOT use any other type of flue parts.
Where more than one water heater is installed, each water heater must
be individually flued using certified Rheem coaxial flue components.
A common flue system MUST NOT be used.
The installation of the secondary flue must be carried out by a qualified person and be in accordance with
the Gas Installations Standard AS 5601 or AS/NZS 5601.1, as applicable under local regulations, local
authority requirements and the installation instructions. A charge will be made for any service related call due
to the installation of the flue system not complying with these installation instructions.
The water heater must be flued separately from all other appliances and flued to the outdoors. Minimum
clearance requirements apply from the flue terminal in accordance with AS 5601 or AS/NZS 5601.1 (refer
also to “Flue Terminal Location” on page 28). Do not install the flue to discharge into a chimney. There is no
requirement on the flue to maintain a minimum distance from combustible materials.
Warning: Where the flue penetrates through walls, floors or ceilings, the penetration must comply with
local regulations for fire rating. The coaxial flue system does not have nor provides a fire rating.
The water heater flue may be terminated either horizontally with a Horizontal Flue Terminal or vertically with
a Vertical Flue Terminal. The secondary flue must be self supporting and not impose a load on the water
heater.
Flue runs must be adequately supported along both horizontal and vertical runs. The maximum
recommended unsupported span for a horizontal run should be no more than 2.0 m. Support isolation
hanging bands should be used. Do not use wire. Wall Brackets (PN 295129) are available and should be
used for vertical runs. The coaxial flue components are to be connected together using the screws provided.
The flue outside diameter is 127 mm.
Warning: Never operate the water heater unless it has been installed in accordance with the installation
instructions. Failure to install the water heater in accordance with the installation instructions, properly flueing
the water heater to the outdoors and ensuring it has an adequate air supply, will result in unsafe operation of
the water heater, possibly causing fire, explosion, serious injury and asphyxiation from carbon monoxide.
A sealing gasket is located at one end of the inner flue. Check all flue components to ensure the gasket is in
place and properly seated. DO NOT install if any gaskets are missing. Contact Rheem Service or their
nearest Accredited Service Agent if the gasket is missing.
26
FLUEING
COMPONENTS
A complete flue system is comprised from the following components.
horizontal flue terminal
(PN 295116)
trim ring
(PN 295125)
vertical flue terminal
(PN 295117)
condensate trap
(PN 295139)
90° bend
(PN 295118)
45° bend
(PN 295119)
straight length – 300 mm
(PN 295126)
wall bracket
(PN 295129)
male to male (MM) adapter
(PN 295124)
female to female (FF) adapter
(PN 295123)
adjustable straight length – 560 to 890 mm
(PN 295127)
straight length – 900 mm
(PN 295122)
27
FLUEING
FLUE TERMINAL LOCATION
The water heater must be located to ensure that the location of the flue terminal complies with the
requirements of AS 5601 or AS/NZS 5601.1, as applicable under local regulations. As a guide the following
requirements are extracted from the Gas Installations Standard. The distances are measured along the wall
from the flue penetration.
Horizontal Flue Terminal Location
At least 300 mm between the top of the flue terminal and the eaves.
At least 300 mm between the bottom of the flue terminal and the ground, balcony or other surface.
At 500 mm between the flue terminal and the edge of any opening into the building, such as an
openable door or window, measured horizontally*.
At least 1500 mm between the top of the flue terminal and the edge of any opening into the building,
such as an openable window, measured vertically.
At least 300 mm between the flue terminal and a return wall or external corner, measured horizontally*.
At least 1500 mm between the flue terminal and any opening into a building, in the direction of the flue
discharge.
At least 500 mm between the flue terminal and a fence, wall or other obstruction, in the direction of the
flue discharge.
At least 300 mm between the flue terminal and any other flue terminal, cowl or other combustion air
intake.
Note: * If these horizontal distances cannot be achieved, AS/NZS 5601.1 states an equivalent horizontal
distance measured diagonally from the nearest discharge point of the flue terminal to the opening may be
deemed to comply. Check with the local regulator.
For a multiple unit installation, refer to “Horizontal Flue Terminations” on page 40 for minimum distances
between flue terminals.
Vertical Flue Terminal Location
At least 300 mm between the underside of the flue terminal and the nearest part of a non-trafficable roof.
At least 1500 mm between the top of the flue terminal and the edge of any opening into the building,
such as an openable window, measured vertically.
At least 500 mm between the flue terminal and any building structure or obstruction facing the terminal,
measured horizontally.
At least 1500 mm between the flue terminal and the edge of any opening into the building, measured
horizontally.
At least 300 mm between the flue terminal and any other flue terminal, cowl or other combustion air
intake.
For a multiple unit installation, refer to “Vertical Flue Terminations” on page 40 for minimum distances
between flue terminals.
28
FLUEING
FLUE LENGTHS
Maximum Flue Length
The system will not operate if there is excessive restriction (pressure drop) in the flueing system.
The maximum length of a secondary flue, with no bends, between the water heater and the flue terminal is
13.5 m.
To determine the maximum length of flue for an installation, reduce the maximum length of 13.5 m:

by 1.5 m for every 90° bend, and

by 0.75 m for every 45° bend.
A secondary flue may have a combination of 90° bends and 45° bends.
Horizontal runs of flue must be installed with a gradient of 20 mm per metre of horizontal run.
Note: Ensure the seam of the inner flue in horizontal runs is at the top of the installation.
Minimum Flue Length
The minimum horizontal flue distance which may be used is 300 mm, provided:
one 90° Bend is connected to the flue outlet of the water heater, and
the Horizontal Flue Terminal is connected to the 90° Bend.
FLUE CONDENSATE
Condensate from the combustion gases may
form in the flue. The flue outlet assembly at
the top of the water heater incorporates a
condensate drain spigot to allow for draining of
this condensate.
REMOVE
CLIP
REMOVE
RUBBER CAP
This spigot is covered by a rubber cap held in
position by a clamp. For certain types of
installations, it will be necessary to remove the
clamp and cap and install a Condensate Trap
(PN 295139) and drain line.
CONDENSATE
SPIGOT
The Condensate Trap must be filled with water
prior to the operation of the water heater.
Refer to “Condensate Trap and Condensate
Drain Line” on page 30.
condensate drain spigot
Draining the Condensate
A Condensate Trap and drain line must be installed under the following conditions in order to prevent
condensate from draining back into the water heater:
Where vertical sections exceeding 2 m are incorporated in a horizontally terminating flue system.
Where the flue terminates vertically.
Where there is a horizontal run of flue between two bends and the bend closest to the flue terminal is
orientated upward.

This horizontal run of flue must have a CONDENSATE
gradient upward to the
flue terminal.
Condensate will drain
SPIGOT
LOCATION
back toward the water heater.
CFWH 627 INDOOR MODELS
Failure to install a Condensate Trap and drain line could allow acidic flue gas condensate to enter into the
water heater flue-way, causing premature failure of the water heater. Any resultant faults will not be covered
by the Rheem warranty.
Note: A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a gradient
SK7166-5 REV AD 1/12
downward to the flue terminal. Condensate will drain from the flue terminal.
29
FLUEING
Condensate Trap and Condensate Drain Line
Where the installation requires a Condensate Trap and condensate drain line:
1.
Remove the clamp and rubber cap from the condensate drain spigot on the water heater flue outlet
assembly.
2.
Locate the Condensate Trap in a suitable position adjacent
to the water heater.
The loop of the condensate trap MUST BE below the spigot
of the condensate drain section to ensure proper drainage.

Secure to the wall with the pipe saddle supplied.
If required, trim the hose length to suit the installation.
Ensure the structure of the Condensate Trap including the
fixed loop is not altered and the trimmed hose seals to the
spigot.
3.
Fill the condensate trap with water.
4.
Fit the shorter end of the silicone tube to the 16 mm spigot of
the water heater flue outlet, ensuring a constant fall to the
condensate trap.
5.

Secure to the spigot with the clamp removed in step 1.

Ensure the silicon hose is not kinked.
Plumb the outlet of the Condensate Trap to drain.

Condensate Trap and Condensate Drain Line
Ensure the silicon hose is not kinked.
The drain line should be as short as possible, have a continuous fall all the way from the Condensate
Trap to the discharge outlet and have no tap, valves or other restrictions in the pipe work.
The outlet of the drain line must be in such a position that flow can be easily seen, but arranged so the
condensate will not cause injury, damage or nuisance.
Warning: Failure to fill with water may cause flue gasses to escape through the condensate trap. Check
regularly to ensure the condensate trap is filled with water, replenishing when required.
Notes
AS/NZS 3500.4 section 5.12, is used as a guide in preparing the following drainage recommendations.
As the condensate is mildly acidic, copper tube and fittings must not be used as they will corrode.
Use UPVC (Unplasticised Polyvinyl Chloride) or PE (polyethylene) piping.
The outlet of the drain line must be in such a position that flow can be easily seen, but arranged so that
discharge will not cause injury, damage or nuisance.
The drain line must not discharge onto electrical connections, earth stakes, copper pipe, concrete paths
or into a pond.
For a multiple unit installation, refer to “Multiple Water Heater Condensate Trap and Condensate Drain Line
Installation” on page 41.
30
FLUEING
HORIZONTAL FLUE RUNS
There are a number of basic installation requirements which must be followed for a flue installation
incorporating horizontal flue runs.
Failure to observe these precautions can lead to the premature failure of the flue system and / or
water heater.
The flue must be installed with the seam of the inner flue
toward the top of the installation.
A horizontal section of flue must be installed with a
gradient of 20 mm per metre (1 in 50 or 1° fall) of
horizontal run.
A horizontal run of flue between two bends, where the
bend closest to the flue terminal is orientated upward,
must have a gradient upward to the flue terminal.

Condensate will drain back toward the water heater. A Condensate Trap and drain line must be
installed where the horizontal flue is installed with an upward gradient. Refer to “Draining the
Condensate” on page 29.
This ensures any condensate formed during operation of the water heater is prevented from
draining back into the water heater.
A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a gradient downward
to the flue terminal.
This prevents rainwater from entering the flue draining back into the water heater.

Use Male to Male and Female to Female Adapters to reverse the direction of flue insertion where
three or more sections of flue are used in a horizontal flue run and the flue drains toward the flue
terminal. Refer to the diagram “Typical Installation – Horizontal Terminal with One Bend” on
page 31.
This provides for proper draining of condensate without pooling at the flue component joins.
Typical Installation – Horizontal Terminal with One Bend
31
FLUEING
Typical Installation
Horizontal Terminal with Multiple Vertical and Horizontal Sections
Typical Installation
Vertical Flue
Typical Installation
Vertical Terminal with Vertical and Horizontal Sections
32
FLUEING
HORIZONTAL FLUE INSTALLATION
Horizontal Flueing – Directly Behind Water Heater
This method of flue installation is used where the secondary flue is to penetrate and terminate immediately
behind the wall on which the water heater is mounted.
Do not plumb the water heater prior to this type of flue installation, as the water heater (if mounted) requires
to be removed from the wall prior to the final installation of the flue.
Notes:
Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at
each joint.
Each flue component is supplied with screws to connect to the adjacent flue component. The screws are
located in a bag taped to the outside of the flue component.
To install a horizontal flue and termination directly behind the water heater:
1.
Carefully remove the template inserted as the middle pages of this installation instructions booklet.
2.
Align the mounting bracket holes on the template exactly over
the upper wall mounting bracket holes on the water heater.
This step presumes the water heater is hung on the wall.

It may be convenient to tape the template to the wall.
Note: Ensure there are no studs, noggins, pipes or electrical
cables located in the wall where the flue is to penetrate
3.
Mark the pilot hole location through the centre of the template.

4.
Remove but DO NOT DISCARD the template.
Remove the water heater from the wall.
Note: It is necessary to remove the water heater from the wall
to allow the fitting and installation of the flue. It is also good
practice so no debris from the drilling operation enters the water
heater flue outlet.
5.
position template
Drill a pilot hole using a 6.5 mm diameter or smaller drill bit.
The drill bit must be long enough to penetrate completely through the outer skin of the external wall.
Note: Ensure the drill remains level and straight during this step.
6.
Cut along the middle of the bold circle marked “Cut Line” on the template.
7.
Align the centre of the template with the pilot hole on the wall surface and scribe around the template
onto the wall.
The circle should be 150 mm in diameter.

8.
Remove but DO NOT DISCARD the template.
Align the centre of the template with the pilot hole on the outside wall surface and scribe around the
template onto the wall.
The circle should be 150 mm in diameter.

9.
Remove the template.
Drill or cut the flue termination hole through the wall using a cutting tool suitable for the wall construction.
Note: The Trim Ring (PN 295125) will cover a 150 mm diameter hole.
33
FLUEING
Note: Steps 10 to 14 can only be conducted whilst the water heater is off the wall.
10. Connect the 90° Bend (PN 295118) to the water heater flue
outlet so it is orientated behind the water heater.

Fit the end of the bend down over the water heater flue
outlet as far as it will go.
Ensure there is a minimum 35 mm and maximum 42 mm
overlap, the rubber seal on the inner flue is well seated
and the bend is fully engaged on the water heater flue
outlet.

Secure the bend to the outlet with the screws provided.
11. Fit the 300 mm Straight Length (PN 295126) of flue to the
90° Bend, if required.
Note: A total wall thickness of greater than 170 mm will
require a 300 mm Straight Length of flue.
flue components required
12. Fit the Horizontal Terminal (PN 295116) to either the
90° Bend or 300 mm Straight Length of flue.
13. Secure each flue component using the sheet metal screws
provided.
14. Fit a Trim Ring over the last section of flue.
15. Rehang the water heater on the wall, carefully inserting the
flue assembly through the wall penetration.
The water heater should be installed in its final location and
fixed in position before completing the flue installation.
Securely fasten the water heater to the wall at each of the
Wall Bracket mounting points.
Adjust the mounting brackets at the top and bottom of the
water heater if required. Bracket adjustment of up to 30 mm
can be made and may assist with flue fitment and alignment.
16. Check the end of the outer skin of the flue terminal extends a
minimum of 75 mm from the face of the external wall.
17. Apply an adequate bead of sealant around the flue assembly
and exterior wall of the building, using a general purpose
silicone sealant suitable for outdoor application.
Failure to properly seal the flue penetration through the wall will result in long term damage due to
weather conditions.
18. Apply an adequate bead of sealant on the rear face of a Trim Ring, using a general purpose silicone
sealant suitable for outdoor application.

Fit the Trim Ring over the flue terminal and press against the wall.
19. Apply an adequate bead of sealant around the flue assembly and interior wall of the building and on the
rear face of the Trim Ring, using a general purpose silicone sealant suitable for indoor application.
Press the Trim Ring against the wall.
20. Upon completion of the secondary flue installation, remove the warning label adhered to the top left
hand corner of the water heater‟s front panel.
Refer to “Connections – Electrical” on page 43 electrical connection details and “Commissioning” on page 47
for the commissioning details of the water heater.
34
FLUEING
Horizontal Flueing – Extended Flue Run
Notes:
Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at
each joint.
Each flue component is supplied with screws to connect to the adjacent flue component. The screws are
located in a bag taped to the outside of the flue component.
Refer to diagrams:

“Typical Installation – Horizontal Terminal with One Bend” on page 31, and

“Typical Installation – Horizontal Terminal with Multiple Vertical and Horizontal Sections” on
page 32.
To install an extended horizontal flue and termination:
1.
Install the water heater in its final location.
2.
Connect the 90° Bend (PN 295118) to the water heater flue outlet and rotate in the desired direction of
discharge, if the flue is not to have a change of direction from horizontal to vertical.

Fit the end of the bend down over the water heater flue outlet as far as it will go.
Ensure there is a minimum 35 mm and maximum 42 mm overlap, the rubber seal on the inner flue
is well seated and the bend is fully engaged on the water heater flue outlet.

3.
Secure the bend to the outlet with the screws provided.
Mark the location where the top of the flue is to penetrate the wall to outside of the building.
If the flue is not to have a change of direction from horizontal to vertical, then to accurately mark this
position:

Measure the vertical distance from the floor to
the top of the 90° Bend, and

Measure the horizontal distance from the wall
behind the water heater to the centre of the
90° Bend, and

Then, where the flue is expected to penetrate
the wall, mark the vertical distance up from the
floor and the horizontal distance out from the
wall measured from the previous steps.
Note: If the flue is to have an additional one or two horizontal changes of direction, then it is not
necessary to measure or mark the horizontal distance from the wall behind the water heater to the
centre of the 90° Bend.

Alternatively, using a level, run from the top of the 90° Bend to a location horizontal on the wall
where the flue will penetrate and mark this point on the wall

Measure the horizontal distance, along the proposed flue route, from the end of the 90° Bend to the
where the flue is to penetrate the wall.
Divide this measurement by 50 to calculate the vertical distance fall of the flue (allowing for a 1 in 50
fall).

Measure this distance down from the previous mark placed on the wall.
This point will be the top of the flue termination hole and the flue will have a gradient of 20 mm per
metre of length towards the terminal.
Note: Ensure there are no studs, noggins, pipes or electrical cables located in the wall where the flue is
to penetrate
35
FLUEING
4.
Carefully remove the template inserted as the middle pages of this installation instructions booklet.

5.
Align the top of the circular template with the mark on the wall.

6.
Cut along the middle of the bold circle marked “Cut Line”.
It may be convenient to tape the template to the wall.
Mark the pilot hole through the centre of the template and scribe around the template onto the wall.
The scribed circle should be 150 mm in diameter.

7.
Remove but DO NOT DISCARD the template.
Drill a pilot hole using a 6.5 mm diameter or smaller drill bit.
The drill bit must be long enough to penetrate completely through the outer skin of the external wall.
Note: Ensure the drill remains level and straight during this step.
8.
Align the centre of the template with the pilot hole on the outside wall surface and scribe around the
template onto the wall.
The scribed circle should be 150 mm in diameter.

9.
Remove the template.
Drill or cut the flue termination hole through the wall using a cutting tool suitable for the wall construction.
Note: The Trim Ring (PN 295125) will cover a 150mm diameter hole.
10. Starting from the 90° Bend and working towards the terminal location, connect all of the other flue
system components.

Ensure each flue component is fully engaged and
the rubber seal on the inner duct is well seated at
each joint.
11. Secure each flue component using the sheet metal
screws provided.
12. Support horizontal sections at a distance no greater than
2 m using a Wall Bracket (PN 295129).
13. A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a downward gradient
to the flue terminal.

Use Male to Male and Female to Female Adapters to reverse the direction of flue insertion where
three or more sections of flue are used in a horizontal flue run and the flue drains toward the flue
terminal. Refer to the diagram on page 31.
This provides for proper draining of condensate without pooling at the flue component joins.
14. A horizontal run of flue between two bends, where the bend closest to the flue terminal is orientated
upward, must have a gradient upward in the direction of the flue terminal.
Note: A Condensate Trap and condensate drain line must be installed if the flue has a gradient upward
in the direction of the flue terminal. Refer to step 22.
15. The Adjustable Straight Length (PN 295127) may be required if a special length is required between
offsets or changes in direction of the flue or to ensure the outer skin of the Horizontal Flue Terminal
extends a minimum of 75 mm from the face of the external wall.

The Adjustable Straight Length can be adjusted from 560 mm to 890 mm by pulling on its end to
increase its length or pushing on its end to decrease its length.
16. Fit a Trim Ring over the last section of flue prior to penetrating the wall.
36
FLUEING
17. Once the flue is assembled and penetrating the wall, install the Horizontal Terminal and secure the
termination to the flue using the sheet metal screws provided.
Note: If the flue terminal position is more than 1800 mm above a safe working surface, then suitable
equipment will be required to enable safe access to fit the flue terminal.
Alternatively, the flue terminal may be fitted to the flue
assembly prior to the assembly penetrating the wall.
18. Make a final adjustment to the Adjustable Straight
Length, if required, to ensure the end of the outer skin of
the flue terminal extends a minimum of 75 mm from the
face of the external wall.

Firmly tighten the compression band on the
Adjustable Straight Length to prevent the pipe from
extending or compressing its length over time.
19. Apply an adequate bead of sealant around the flue assembly and exterior wall of the building, using a
general purpose silicone sealant suitable for outdoor application.
Failure to properly seal the flue penetration through the wall will result in long term damage due to
weather conditions.
20. Apply an adequate bead of sealant on the rear face of a Trim Ring, using a general purpose silicone
sealant suitable for outdoor application.

Fit the Trim Ring over the flue terminal and press against the wall.
21. Apply an adequate bead of sealant around the flue assembly and interior wall of the building and on the
rear face of the Trim Ring, using a general purpose silicone sealant suitable for indoor application.
Press the Trim Ring against the wall.
22. Connect a Condensate Trap (PN 295139)
to the condensate drain spigot on the
water heater flue outlet the flue has a
change of direction from horizontal to
vertical or if there is a long vertical rise
directly from the water heater.

REMOVE
CLIP
REMOVE
RUBBER CAP
Install a condensate drain line to the
Condensate Trap.
Refer to “Draining the Condensate” on
page 29 and to “Condensate Trap and
Condensate Drain Line” on page 30.
CONDENSATE
SPIGOT
23. Upon completion of the secondary flue
installation, remove the warning label
adhered to the top left hand corner of the
water heater‟s front panel.
condensate drain spigot
Refer to “Connections – Electrical” on page 43 electrical connection details and “Commissioning” on page 47
for the commissioning details of the water heater.
CONDENSATE SPIGOT LOCATION
CFWH 627 INDOOR MODELS
37
SK7166-5 REV AD 1/12
FLUEING
VERTICAL FLUE INSTALLATION
Suitable flashing (not supplied) is required to waterproof the roof penetration.
Notes:
Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at
each joint.
Each flue component is supplied with screws to connect to the adjacent flue component. The screws are
located in a bag taped to the outside of the flue component.
Refer to diagrams:

“Typical Installation – Vertical Flue” on page 32, and

“Typical Installation – Vertical Terminal with Vertical and Horizontal Sections” on page 32.
To install a vertical flue and termination:
1.
Determine the location where the flue will penetrate through the roof.
Note: Ensure there are no rafters, purlins, pipes or electrical cables located in the roof where the flue is
to penetrate.
2.
Drill or cut the flue termination holes through the roof and ceiling of a suitable size to allow the
installation of the flue, using a cutting tool suitable for the roof construction.
3.
Install a Condensate Trap (PN 295139) to
the condensate drain spigot on the water
heater flue outlet.

REMOVE
CLIP
REMOVE
RUBBER CAP
Install a condensate drain line to the
Condensate Trap.
Refer to “Draining the Condensate” on
page 29 and to “Condensate Trap and
Condensate Drain Line” on page 30.
4.
Connect the first flue component to the water
heater flue outlet.

CONDENSATE
SPIGOT
Fit the end of the flue component down
over the water heater flue outlet as far
as it will go.
condensate drain spigot
Ensure there is a minimum 35 mm and maximum 42 mm
overlap, the rubber seal on the inner flue is well seated
and the flue component is fully engaged on the water
heater flue outlet.

5.
Continuing from the first flue component and working
towards the terminal location, connect all of the other flue
system components.

6.
Secure the bend to the outlet with the screws provided.
CONDENSATE SPIGOT LOCATION
engaged
and the627 INDOOR MODELS
CFWH
Ensure each flue component is fully
rubber seal on the inner duct is well seated at each joint.
Horizontal flue runs between bends must have a minimum
upward gradient towards the flue terminal of 20 mm per
metre.
Note: Ensure that the seam of the inner flue in horizontal
runs is towards the top of the installation.
7.
Secure each flue component using the sheet metal screws provided.
38
SK7166-5 REV AD 1/12
FLUEING
8.
Fix a Wall Bracket after each transition to a vertical run.
This is to prevent vertical loading on the bends and offsets.
9.
Support vertical sections of flue at a distance no greater than 2 m using a Wall Bracket (PN 295128).
Note: The Wall Bracket can be used to support vertical sections of flue from a ceiling by rotating the
legs through 90°.
10. Install an Adjustable Straight Length (PN 295127) if a special length is required between offsets or
changes in direction of the flue.

The Adjustable Straight Length can be adjusted from 560 mm to 890 mm by pulling on its end to
increase its length or pushing on its end to decrease its length.

Firmly tighten the compression band on the Adjustable Straight Length to prevent the pipe from
extending or compressing its length over time.
11. Fit a Trim Ring over the last section of flue prior to
penetrating the ceiling, if one is to be fitted.
12. Once all of the flue components, excluding the Vertical
Terminal, have been installed and all supports are securely
fastened, the roof flashing must be installed and adequately
sealed to prevent rain entry.

Cut the flashing to a diameter that allows a snug fit over
the flue.

Install the roof flashing over the flue and using suitable
fasteners, fix to the roof material.
The flue must extend a minimum of 150 mm through the
roof flashing.
13. Connect the Vertical Terminal (PN 295117) to the flue exiting
the roof.

Secure the joint with sheet metal screws provided.
The top of the Vertical Terminal should not be less than
450 mm above the flashing below.
Observe flue terminal clearances in accordance with
AS 5601 or AS/NZS 5601.1. Refer also to “Vertical Flue
Terminal Location” on page 28.
Note: The flue should not extend more than 1.5 m from the
roof unless guy wires or other additional support is provided.
14. Apply an adequate bead of sealant around the flue assembly
and flashing and around the flashing and roof material, using
a general purpose silicone sealant suitable for outdoor
application.
Failure to properly seal the flue penetration through the roof
will result in long term damage due to weather conditions.
15. Apply an adequate bead of sealant around the flue assembly and ceiling and on the rear face of the
Trim Ring (if fitted), using a general purpose silicone sealant suitable for indoor application.
Press the Trim Ring (if fitted) up against the ceiling.
16. Upon completion of the secondary flue installation, remove the warning label adhered to the top left
hand corner of the water heater‟s front panel.
Refer to “Connections – Electrical” on page 43 electrical connection details and “Commissioning” on page 47
for the commissioning details of the water heater.
39
FLUEING
MULTIPLE WATER HEATER FLUE INSTALLATION
Where multiple water heaters are installed, each water heater must be individually flued to the outside. A
common flue system MUST NOT be used.
For a multiple unit installation, the water heater is certified for installation with zero clearance between
adjacent water heaters.
If the water heaters are mounted on a wall, although they are certified for installation with zero clearance
between them, it may be necessary to leave a suitable space of a minimum 175 mm between each water
heater if a Condensate Trap and condensate drain line is to be installed. The Condensate Trap and
condensate drain line would located between each water heater with the common drain manifold positioned
below the water heaters. Refer to “Multiple Water Heater Condensate Trap and Condensate Drain Line
Installation” on page 41.
Refer to “Flue Terminal Location” on page 28 for flue terminal clearances from other objects in accordance
with AS 5601 or AS/NZS 5601.1.
Follow the relevant instructions pertaining to the type of flue installation, with the following additional
requirements in relation to flue terminal clearances to be taken into account. The distances are based on
using the coaxial flue system components.
Vertical Flue Terminations
1.
The minimum side by side centre to centre distance
between flue terminals is to be no less than 360 mm.
2.
The minimum back to back centre to centre distance
between flue terminals is to be no less than 570 mm.
Horizontal Flue Terminations
1.
The minimum horizontal centre to centre distance between
flue terminals is to be no less than 360 mm.
2.
The minimum vertical centre to centre distance between
flue terminals is to be no less than 570 mm.
570
ABOVE
AND
BELOW
360
360
vertical flue terminations
horizontal flue terminations
40
FLUEING
MULTIPLE WATER HEATER CONDENSATE TRAP AND CONDENSATE DRAIN LINE INSTALLATION
Depending upon the type of installation, it may be necessary to install a Condensate Trap and condensate
drain line to each water heater. Refer to “Draining the Condensate” on page 29.
The drain line from each Condensate Trap may be:
drained separately to a discharge point, or
manifolded together with a single drain line running to a discharge point.
If the water heaters are mounted on a wall, although they are certified for installation with zero clearance
between them, it may be necessary to leave a suitable space of a minimum 175 mm between each water
heater if a Condensate Trap and condensate drain line is to be installed. The Condensate Trap and
condensate drain line would located between each water heater with the common drain manifold positioned
below the water heaters.
Condensate Traps with Common Drain Line
1.
Remove the clamp and rubber cap from the condensate drain spigot on each water heater flue outlet
assembly.
2.
Locate and install the Condensate Trap in a suitable position adjacent to the water heater.
Refer to steps 2 to 4 of the procedure outlined in “Condensate Trap and Condensate Drain Line” on
page 30.
If the drain line from each Condensate Trap is to be run separately to a discharge point, then proceed to
step 4, otherwise continue with step 3.
3.
Manifold the drain lines from each Condensate Trap into a common header.
Use UPVC, PE or similar, do not use copper.
Ensure adequate fall is provided in the header to allow for complete drainage.
It may be necessary to support the drain line manifold with suitable hangers from the ceiling.
condensate drain common manifold
4.
Plumb the outlet of each Condensate Trap or the drain line manifold to a suitable discharge point.
The drain line should be as short as possible, have a continuous fall all the way from the Condensate
Trap or drain line manifold to the discharge outlet and have no tap, valves or other restrictions in the
pipe work. The outlet of the drain line must be in such a position that flow can be easily seen, but
arranged so the condensate will not cause injury, damage or nuisance.
41
FLUEING
Warning: Failure to fill with water may cause flue gasses to escape through the condensate trap. The
condensate trap should be regularly checked to ensure it is filled with water, replenishing when required.
Notes
AS/NZS 3500.4 section 5.12 is used as a guide in preparing the following drainage recommendations.
As the condensate is mildly acidic, copper tube and fittings must not be used as they will corrode.
Use UPVC (Unplasticised Polyvinyl Chloride) or PE (polyethylene) piping.
The outlet of the drain line must be in such a position that flow can be easily seen, but arranged so that
discharge will not cause injury, damage or nuisance.
The drain line must not discharge onto electrical connections, earth stakes, copper pipe, concrete paths
or into a pond.
42
CONNECTIONS – ELECTRICAL
All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the
Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements.
Warning: Temperature controllers must not be fitted to this water heater (862 series) if it is installed as
an in-series gas booster with a solar water heater system or if a Water Star water heater is installed because
water at a temperature much higher than the controller setting can be delivered. If a solar or Water Star
water heater has been installed to an existing water heater installation, then all controllers must be
disconnected and removed.
The water heater is supplied with a 1.8 metre lead and plug and requires a 240 V 50 Hz general purpose
outlet (GPO) to be located within 1.2 metres of the installation. The GPO must be clear of the flue exhaust,
draining water, gas supply pipe and water connections.
The power consumption of the water heater is:
Component
Gas water heater
Power
consumption
Comments
80 Watts
627 – Burner on, anti frost device inactive
187 Watts
627 – Burner on, anti frost device active
The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be
used to supply power to the water heater.
43
MULTIPLE INSTALLATIONS
A multiple installation of 27 litre gas water heaters on a single manifold is possible, using a parallel plumbing
arrangement, where large volumes of hot water are required. It is good practice, but not essential, to install
®
the water heaters in an Equa-Flow plumbing arrangement. The installation may operate on a dead leg
system or a circulated flow and return system.
If a circulated flow and return system is installed, the circulator must be sized and set to provide a minimum
flow rate of 3.0 L/min through the circulated hot water flow and return system and be either thermostatically
and / or timer controlled. The circulator must not be set to operate continuously, i.e. 24 hours per day.
The cold (or solar preheat) 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 6. Only one bank can be installed.
2.
The water heaters must be of the same model.
3.
The cold (or solar preheat) water line, cold (or solar preheat) and hot headers and hot water line must be
sized to meet the requirements of both AS/NZS 3500.4 and the application. The gas line must be sized
to meet the requirements of AS 5601 or AS/NZS 5601.1 and the application.
Minimum header pipe sizes at the installation are:
No of water heaters
1
2
3
4
5
6
Cold (or solar preheat) and hot header pipe size
DN20
DN25
DN32
DN32
DN40
DN40
Gas pipe size
DN20
DN25
DN32
DN32
DN40
DN40
Note: Water and gas supply pipe sizes to the installation may be required to be larger than the minimum
pipe sizes at the installation to meet the requirements of the Standards and the application.
The recommended branch line size for the cold (or solar preheat) and hot water and gas pipes is DN20.
4.
A full flow gate valve or ball valve and if required a pressure limiting valve must be installed on the cold
water line to the system. A non return valve or stop tap must not be installed.
Note: The gate valve or ball valve and pressure limiting valve are not required if this is an in-series gas
booster installation to a solar water heater.
5.
A full flow gate valve or ball valve (not a stop tap) must be installed on both the inlet and outlet branches
of each water heater. A non return valve must not be installed.
6.
An isolation valve must be installed on the gas branch of each water heater.
7.
An adjustable pressure reducing valve (PRV) (RMC model SYR 312 / 20) must be installed on the cold
(or solar preheat) branch to all but the first water heater.
Each PRV is to be adjusted so that each subsequent water heater is staged to operate only after the
required hot water flow rate increases by intervals of 13 litres per minute (refer to “Pressure Reducing
Valve Commissioning Procedure” on page 45).
8.
Non return valves or pressure limiting valves must not be installed on the branch lines to the water
heaters.
9.
It is good plumbing practice for all fittings, valves and branch lines to be matched sets all the way along
the manifold.
10. Sufficient space must be left to enable access, servicing or removal of any water heater.
The water heaters can be installed side by side with minimal clearance between them. The AGA has
approved the installation of the water heaters with an exemption from the 300 mm minimum clearance
requirements between flue terminals, as stated in AS/NZS 5601, clause 5.13.6.5 and AS/NZS 5601.1,
clause 6.9.3. A second rating label is attached to the inside of the front cover of each water heater. This
can be referenced to determine details of the water heater.
44
MULTIPLE INSTALLATIONS
Refer to the diagram on page 45 for installation and plant layout details.
PRESSURE REDUCING VALVE COMMISSIONING PROCEDURE
The pressure reducing valves must be set and commissioned for each water heater so the water heaters will
turn on and off in sequence when the flow rate increases or decreases to a particular rate. This procedure
can be conducted with either cold water or solar preheated water, however the temperature of the solar
preheated water must be at least 2°C lower than the preset outlet temperature setting of the water heater.
The water heater installation should be sized and the number of water heaters selected to cater for the cold
water temperature in winter and assuming a period of no solar gain without any solar preheated water
available, if the installation is part of a solar water heater system. The climate chart is based on a flow rate
from a shower outlet not exceeding 9 litres per minute and a tempered water temperature of 42°C.
Number of Shower Outlets
Climate Chart
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
number of water heaters
warm / tropical climate
(20°C inlet temperature)
1
1
1
2
2
2
3
3
3
3
4
4
4
5
5
5
6
6
6
6
number of water heaters
moderate climate
(15°C inlet temperature)
1
1
2
2
2
3
3
3
4
4
4
5
5
6
6
6
-
-
-
-
number of water heaters
cool climate
(10°C inlet temperature)
1
1
2
2
3
3
3
4
4
5
5
6
6
6
-
-
-
-
-
-
Note: If there are other hot water outlets which may operate simultaneously with the shower outlets, then the
operation and flow rates of these outlets need to be considered and an allowance made when selecting the
number of water heaters for the application.
Note: An isolation valve and pressure limiting valve are not required on the solar preheat water line to the gas boosters as part
of a solar water heater installation. A full flow isolation valve must still be installed on the inlet branch of each water heater.
TYPICAL INSTALLATION – MULTIPLE CONTINUOUS FLOW GAS WATER HEATERS
45
MULTIPLE INSTALLATIONS
To set and commission the pressure reducing valves:
1.
Commissioning: Commission each of the water heaters prior to setting the pressure reducing valve on
the cold (or solar preheat) branch to the water heater (refer to “Commissioning” on page 47).
2.
Turn on services: Turn on the water, gas and electricity to the water heaters.
3.
Locking screw: Loosen the locking screw on each SYR valve with a flat bladed screw driver.

4.
To adjust the SYR valve during this commissioning procedure, turn the knob:

Anti-clockwise = delay unit ignition

Clockwise = bring forward unit ignition
Open a hot tap: Open 1 x hot shower or tap to between 7-8 litres / min. The first water heater (without
SYR valve) should ignite and provide hot water.
Notes:

The flow rate from each shower or tap throughout this commissioning procedure should be between
7-8 litres / min.

When turned on, each shower or tap must be at an equal flow rate.
5.
Temperature limiting device: Set the temperature of any temperature limiting device installed
downstream of the manifold.
6.
First water heater: Open the maximum number of showers suitable for 1 x water heater in accordance
with the climate chart. Only the first water heater should be operating.
If other water heaters are operating, adjust their SYR valves by turning the knob anti-clockwise until the
water heater turns off.
7.
Second water heater: Open the next shower. The second water heater should ignite.
If it fails to ignite, adjust the SYR valve by turning the knob clockwise until the water heater turns on.
If other water heaters ignite, adjust their SYR valves by turning the knob anti-clockwise until the water
heater turns off.
8.
Turn off the previous shower. The second water heater should turn off.
If it does not turn off, adjust the SYR valve by turning the knob anti-clockwise until the water heater turns
off.
9.
Open the maximum number of showers suitable for 2 x water heaters, in accordance with the climate
chart. Only the first two water heaters should be operating.
If other water heaters downstream are operating, adjust their SYR valves by turning the knob anticlockwise until the water heater turns off.
10. Subsequent water heaters: Repeat steps 7 to 9 for each subsequent water heater in the bank.
11. Locking screw: Turn off all showers and lock adjusting screw on the SYR valves. Commissioning is
now complete.
46
COMMISSIONING
All water heaters are tested and adjusted before dispatch from the factory, however further adjustments may
become necessary because of local conditions.
Note: If this water heater is installed as part of a multiple installation, i.e. in a bank of water heaters, it will be
necessary to isolate the other water heaters and commission the water heaters one at a time. However, all
the water heaters will need to be operating during the checking of the gas inlet pressure.
TO TURN ON THE WATER HEATER
Open all of the hot taps in the house (don‟t forget the shower).
Open the cold water isolation valve fully at the inlet to the water heater.
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 fully.
Check the gas pipe work for leaks.
Plug in the water heater at the power outlet and switch on the electrical supply.
Turn on a controller, if one is fitted, by pressing the on / off button.
The light in the on / off button and the priority light (standard controller) or ACTIVE light (Deluxe
controller) will both glow.
Open a hot tap.
The water heater will operate automatically.
Check to ensure the flow from each connected hot tap is sufficient to operate the water heater.
The minimum operating flow rate for all models is 2.0 litres per minute.
Check and if required adjust the preset outlet temperature setting of the water heater.
Refer to “Preset Outlet Temperature Setting” on page 51.
The automatic water governor incorporated in the water heater is not adjustable.
To complete the installation, it is necessary to check the gas supply pressure at the inlet to the water heater
(refer to “Gas Inlet Pressure” on page 47), the minimum test point pressure and the maximum test point
pressure (refer to “Burner Gas Pressure” on page 49).
Upon completion and testing of the installation, ensure the controller(s) is turned off (if fitted). Explain to the
householder or a responsible officer the functions and operation of the water heater and the controllers (if
fitted).
Warning: Upon completion of the installation and commissioning of the water heater, leave this guide
with the householder or a 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
Propane
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.
47
COMMISSIONING
Gas Inlet Test Point Pressure
To check the gas inlet pressure:
1.
Close any hot taps and ensure the
burners are not operating.
2.
Close the gas isolation valve at the gas
inlet to the water heater.
3.
Locate the gas inlet test point on the gas
connection to the water heater.
4.
5.

Remove the test point screw and
washer from the test point orifice.

Connect the manometer.
Open the gas isolation valve fully at the
gas inlet to the water heater.
Observe the gas pressure reading on
the manometer.
WASHER
GAS INLET
INLET TEST
POINT ORIFICE
TEST
POINT
SCREW
MANOMETER
INLET GAS PRESSURE TEST
865, 866, 867, 868 SERIES - CONTINUOUS FLOW GAS WATER HEATER
If the manometer reading is between the minimum and maximum inlet gas pressure ratings on the rating
label, no adjustment is required.
If the manometer reading is below the minimum inlet gas pressure rating on the rating label, then either
the gas pipe to the water heater is undersized and needs to be rectified or adjustment is required at the
gas regulator.
If the manometer reading is above the maximum inlet gas pressure ratings on the rating label, then
adjustment is required at the gas regulator.
6.
Switch on the electrical supply at the power outlet to the water heater if it is not already switched on and
turn on a controller, if one is fitted, by pressing the on / off button.
7.
Open a hot tap fully and ensure the burners are fully ignited.
It may be necessary to open a second tap.
8.
Turn on all other gas burning appliances in the house which are on the same gas supply.
9.
Observe the gas pressure reading on the manometer.
If the manometer reading is between the minimum and maximum inlet gas pressure ratings on the rating
label, no adjustment is required.
If the manometer reading is below the minimum inlet gas pressure rating on the rating label, then either
the gas pipe to the water heater is undersized and needs to be rectified or adjustment is required at the
gas regulator.
If the manometer reading is above the maximum inlet gas pressure ratings on the rating label, then
adjustment is required at the gas regulator.
10. Turn off the other gas burning appliances in the house.
11. If an adjustment was made during Step 9, repeat this procedure from Step 5.
12. Close the hot tap(s).
13. Close the gas isolation valve at the inlet to the water heater.
14. Remove the manometer and refit and tighten the test point screw and washer.
15. Open the gas isolation valve fully at the gas inlet to the water heater.
16. Open a hot tap again so the burners ignite.
17. Test for gas leaks.
18. Close the hot tap.
48
COMMISSIONING
BURNER GAS PRESSURE
It is necessary to check the burner gas pressure at both the minimum and maximum operational settings. To
check and if necessary adjust the operational gas pressures, the electrical supply to the water heater must
be switched on, the burners ignited and hot water must be flowing from a hot tap.
Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring
terminals.
Note: If an 862 series model is installed as an in-series gas booster for a solar water heater, then the
temperature of the water entering the in-series gas booster must be at least 2°C below the water heater
preset outlet temperature setting. Otherwise the gas burners will not ignite and the test point gas pressures
cannot be measured.
Minimum test point gas pressure
Refer to the rating label on the water heater for the minimum test point gas pressure.
1.
Close any hot taps and ensure the burners are not operating.
2.
Turn off the controller(s), if one is fitted, by pressing the
on / off button and switch off the electrical supply at the
power outlet to the water heater.
3.
Remove the screws holding the front panel to the jacket.
4.
Gently disengage the front panel and pull forward to
remove from the water heater.
5.
Locate the burner pressure test point on the main burner
manifold.
Remove the test point screw and washer from the
test point orifice.
Connect the manometer.
Switch on the electrical supply at the power outlet to the
water heater and turn on a controller, if one is fitted, by
pressing the on / off button.
7.
Open the gas isolation valve fully at the gas inlet to the
water heater, if not already open.
8.
Open a hot tap slowly until the burners ignite.
9.
Press and hold down the MIN button and observe the
reading on the manometer.
“1L” is shown on the LED display.
Test Point Gas Pressure
DIP 1 Adjustment
SET OF
Continuous Flow Water Heater
DIP SWITCHES
86,87 Series, 022,024,027
Models
ON
If the manometer reading observed in step 9 agrees with
the rating label, no further adjustment is required.
11. To adjust, press and hold the adjuster button.
4
4
1
2
3
4
1
2
3
4
MIN
MAX
MAX. BUTTON
be
held
ADJ
ADJUSTER
BUTTON
down
12. Press and hold the MIN button and observe the reading
on the manometer.

3
3
MIN. BUTTON
“LH” is shown on the LED display.
Note: The adjuster button must
continuously through steps 11 to 13.
2
2
ON
10. Release the MIN button.

1
1
DIP2

MANOMETER
OFF ON
6.
OFF ON

TEST
POINT
SCREW
DIP1

WASHER
TEST POINT
ORIFICE
DIP SWITCH AND ADJUSTMENT BUTTONS
CONTINUOUS FLOW WATER HEATER
86,87 SERIES, 022,024,027 MODELS
The manometer reading will change as the test point
gas pressure adjusts.
Note: While the MIN button is pressed, the gas pressure
will at first increase then decrease, cycling between an
upper gas pressure limit (39 on the LED display) and a
lower gas pressure limit (01 on the LED display).
13. Release the MIN button when the reading on the manometer agrees with the rating label.
14. Release the adjuster button.
49
COMMISSIONING
Notes:
If the burners extinguish and error code 11 or 12 starts to flash on the LED display:

release the MIN and adjuster buttons

close the hot tap

clear the error code (refer to “Clearing Error Code” on page 50)

recommence the procedure from Step 8.
If the adjuster button is released before Step 13, clear any error code (if displayed) and recommence the
procedure from Step 8.
Maximum test point gas pressure
Refer to the rating label on the water heater for the maximum test point gas pressure.
Follow Steps 8 to 14 of the “Minimum test point gas pressure” procedure
on page 49, but open the hot tap fully and use the MAX button instead of
the MIN button. It may be necessary to open two or three hot taps fully,
depending upon the model of water heater and the incoming cold water
temperature.
Note: In Step 9, “3H” (27 models) will be shown on the LED display.
After setting the minimum and maximum test point gas pressures:
Close the hot tap.
Remove the manometer and refit and tighten the test point screw and washer.
Open a hot tap again so the burners ignite.
Test for gas leaks.
Close the hot tap.
Turn off the controller, if one is fitted, by pressing the on / off button.
LED
DISPLAY - TEST POINT GAS PRESSURE
Switch off the electrical supply at the power outlet to the water heater.
CONTINUOUS
FLOW
WATER HEATER
Refit the
front panel and screws to the water
heater.
86,87 SERIES, O22,024,027 MODELS
Clearing Error Code
If an error code does appear on the LED display during the commissioning process, it will be necessary to
clear the error in order to complete the installation.
To clear an error code:
switch off the electrical supply at the power outlet to the water heater
check the gas isolation valve at the gas inlet to the water heater is fully open
wait five (5) minutes
switch on the electrical supply at the power outlet to the water heater
50
COMMISSIONING
PRESET OUTLET TEMPERATURE SETTING
The factory preset outlet temperature setting of the water heater is:
862 series
60°C
60°C
70°C
for a single water heater
as part of a Multipak system
as part of a Commpak system
If a temperature controller is connected to the water heater, this will override the preset outlet temperature
setting and the maximum temperature setting will be:
Maximum Outlet Temperature
862 series
Kitchen controller connected
60°C
Bathroom controller only connected
50°C
It is usually not necessary to adjust the factory preset outlet temperature setting of the water heater, unless
the customer or application has a particular requirement for this to be done.
For applications requiring sanitising temperatures, such as a commercial kitchen, it will be necessary to
adjust the preset outlet temperature setting to 82°C.
If the water heater is installed as part of a circulated hot water flow and return system in a building, the preset
outlet temperature setting must be set to at least 60°C. If the water temperature decreases by more than 5°C
through a circulated hot water flow and return system due to heat loss in the ring main, the preset outlet
temperature setting of the water heater should be set to at least 65°C.
Refer to “To Check or Adjust the Preset Outlet Temperature Setting” on page 52 to check or if required to
adjust the preset outlet temperature setting of the water heater.
Gas Booster for a Solar Water Heater
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. When this water heater is used as an in-series booster for a solar water heater it can satisfy
this AS 3498 requirement provided it is energised, the booster preset outlet temperature setting is 70°C or
higher, and that a remote temperature controller is not used.
It will be necessary to check and if required to adjust the preset outlet temperature setting of the continuous
flow water heater when:
it is installed as an in-series gas booster to a solar water heater
it is an existing continuous flow water heater and a solar water heater is then installed.
Note:
Consideration must be given to the delivery temperature to any ablution and public areas such as a
bathroom, ensuite or public amenities. Refer to “Hot Water Delivery” on page 18 and to “Schematics of
Two Temperature Zones Using A Temperature Limiting Device” on page 19.
51
COMMISSIONING
TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING
The temperature settings will be displayed on the LED display. The preset outlet temperature settings are:
862 series
38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 82°C
It is necessary to have the electrical supply to the water heater switched on during stages of checking or
adjusting the preset outlet temperature setting procedure.
Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring
terminals. The adjustment must be carried out by a qualified person.
Warning: This procedure will involve the adjustment of dip switches. Adjustment of a dip switch should
only be made with an insulated tool.
Gently disengage the front panel and pull forward to remove from the
water heater.
4.
Switch on the electrical supply at the power outlet to the water heater.
5.
Switch dip switches 3 and 4 to the on (up) position on the DIP 1 set of
DIP switches on the I.C. Board.
3
2
1
4
OFF
3.
ON
1 2 3 4
ON
3
2
1
The current preset outlet temperature setting will show on the LED
display.
ON
Remove the screws holding the front panel to the jacket.
4
OFF
2.
DIP1
Switch off the electrical supply at the power outlet to the water heater.
DIP2
1.
ON
To check or adjust the preset outlet temperature setting:
1 2 3 4
7.
Switch dip switches 3 and 4 to the off (down) position.
8.
Switch off the electrical supply at the power outlet to the water heater.
ON
4
4
3
4
1 2 3 4
1
2
3
4
1
2
3
4
ON
DIP2
DIP2
ON
ON
MIN
ADJ
MAX
1
2
3
4
MIN. BUTTON
4
1 2 3 ADJUSTER
MAX. BUTTON
BUTTON
1
2
3
4
OFF
DIP1
ON
LED Display
DIPisSWITCH AND
ADJUSTMENTFlow
BUTTONS
Continuous
Water Hea
The LED display will go blank. The preset outlet temperature setting
ON WATER HEATER
CONTINUOUS
FLOW
now set.
86, 87 Series, 022, 024, 027 M
86,87 SERIES, 022,024,027 MODELS
ON
1
2
3
4
OFF
Refit the front panel and screws to the water heater.
ON
1 2 3 4
DIP2
9.
3
OFF
Set the LED display to 82 on an 862 series water heater if it is required
to deliver sanitising temperatures.
2
OFF
1 1 2 23
The MAX and MIN buttons are located underneath the DIP 1 and
DIP 2 set of DIP switches.
862 series
The increments are 38, 40, 42, 43, 45, 50, 55, 60, 65, 70, 75, 82.
ON
1
OFF ON
Each press of the MAX or MIN button will increase or decrease the
preset temperature by one increment.
ON
OFF ON
Press the MAX button to increase or the MIN button to decrease the
preset outlet temperature setting.
DIP1
6.
DIP1
DIP SWITCHES
If the temperature displayed on the LED display is the desired preset
PRESET OUTLET TEMPERATURE SETTINGS
outlet temperature setting, then proceed to step 7, as no further
CONTINUOUS FLOW
FLOW WATER HEATER
DIP 1 SET OF
adjustment is necessary.
86,87 SERIES,DIP
022,024,027
SWITCHES MODELS
1 2 3 4
DIP SWITCHES
PRESET OUTLET TEMPERATURE SETTINGS
CONTINUOUS FLOW FLOW WATER HEATER
86,87 SERIES, 022,024,027 MODELS
52
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:
Turn off the controllers(s) (if fitted) by pressing the on / off button.
The light in the on / off button will go out and the priority light (standard controller) or the ACTIVE light
(Deluxe controller), if it is on, will go out.
Switch off the electrical supply at the power outlet to the water heater (refer to note below).
Close the gas isolation valve at the inlet to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
Drain the water heater if there is a risk of freezing conditions occurring (refer to “Draining The Water
Heater” on page 54).
Notes:
The frost protection system will be rendered inoperable if electrical power is not available at the water
heater.
Damage caused by freezing due to the unavailability of power at the water heater is not covered by the
Rheem warranty (refer to “Terms of the Rheem Warranty” on page 55).
If the power has been switched off to the water heater and there is a risk of freezing, then it is necessary
to drain the water heater (refer to “Draining the Water Heater” on page 54).
53
DRAINING THE WATER HEATER
To drain the water heater:
Turn off the water heater (refer to “Turn Off The Water Heater” on page 53).
Open a hot tap (preferably the shower outlet).
Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the underside of
the water heater.
Water will drain from the water heater.
When water stops flowing from the water heater, close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on again.
54
RHEEM CONTINUOUS FLOW GAS WATER HEATER
WARRANTY – AUSTRALIA ONLY
CONTINUOUS FLOW GAS WATER HEATER 862 627 MODELS
1. THE RHEEM WARRANTY – GENERAL
1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street, Rydalmere New South Wales, the
supplier of Rheem continuous flow gas water heaters, manufactured by Paloma Co., Ltd., a world leader in water heater technology
and manufacture.
1.2 Rheem offer a trained and qualified national service network who will repair or replace components at the address of the water heater
subject to the terms of the Rheem warranty. Rheem Service, in addition can provide preventative maintenance and advice on the
operation of your water heater. The Rheem Service contact number is available 7 days a week on 131031 with Service personnel
available to take your call from 8am to 8pm daily (hours subject to change).
1.3 For details about this warranty, you can contact us on 131031 or by email at warrantyenquiry@rheem.com.au (not for service
bookings).
1.4 The terms of this warranty and what is covered by it are set out in sections 2 and 3 and apply to water heaters manufactured after
1st October 2012.
1.5 If a subsequent version of this warranty is published, the terms of that warranty and what is covered by it will apply to water heaters
manufactured after the date specified in the subsequent version.
2. TERMS OF THE RHEEM WARRANTY AND EXCLUSIONS TO IT
2.1 The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion.
2.2 If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible for our standard call out
charge. If you wish to have the relevant component repaired or replaced by Rheem, that service will be at your cost.
2.3 Where a failed component or cylinder is replaced under this warranty, the balance of the original warranty period will remain effective.
The replacement does not carry a new Rheem warranty.
2.4 Where the water heater is installed outside the boundaries of a metropolitan area as defined by Rheem or further than 25 km from
either a regional Rheem branch office or an Accredited Rheem Service Agent's office, the cost of transport, insurance and travelling
between the nearest branch office or Rheem Accredited Service Agent’s office and the installed site shall 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 and/or safety equipment, shall be the owner’s responsibility. In other words, the cost of dismantling or
removing cupboards, doors or walls and the cost of any special equipment to bring the water heater to floor or ground level or to a
serviceable position is not covered by this warranty.
2.6 This warranty only applies to the original and genuine Rheem water heater in its original installed location and any genuine Rheem
replacement parts.
2.7 The Rheem warranty does not cover faults that are a result of:
a) Accidental damage to the water heater or any component (for example: (i) Acts of God such as floods, storms, fires, lightning
strikes and the like; and (ii) third party acts or omissions).
b) Misuse or abnormal use of the water heater.
c) Installation not in accordance with the Owner’s Guide and Installation Instructions or with relevant statutory and local
requirements in the State or Territory in which the water heater is installed.
d) Connection at any time to a water supply that does not comply with the water supply guidelines as outlined in the Owner’s Guide
and Installation Instructions.
e) Repairs, attempts to repair or modifications to the water heater by a person other than Rheem Service or a Rheem Accredited
Service Agent.
f) Faulty plumbing or faulty gas or power supply.
g) Failure to maintain the water heater in accordance with the Owner's Guide and Installation Instructions.
h) Transport damage.
i) Fair wear and tear from adverse conditions (for example, corrosion).
j) Cosmetic defects.
k) Ice formation in the waterways of a water heater: where the electricity supply has been switched off or has failed and the water
heater has not been drained in accordance with the instructions; or due to an ambient temperature below -20°C (including wind
chill factor).
2.8 Subject to any statutory provisions to the contrary, this warranty excludes any and all claims for damage to furniture, carpet, 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.
2.9 If the water heater is not sized to supply the hot water demand in accordance with the guidelines in the Rheem water heater literature,
any resultant fault will not be covered by the Rheem warranty.
55
RHEEM CONTINUOUS FLOW GAS WATER HEATER
WARRANTY – AUSTRALIA ONLY
CONTINUOUS FLOW GAS WATER HEATER 862 627 MODELS
3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT
3.1 Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with its specifications as
follows:
What components are covered
The period from the date of
installation in which the fault must
appear in order to be covered
What coverage you receive
All components
Year 1
Repair and/or replacement of the faulty
component, free of charge, including labour.
Years 2 & 3
Repair and/or replacement of the faulty
component, free of charge, including labour.
Years 4 to 10
Replacement heat exchanger, free of
charge. Installation and repair labour costs
are the responsibility of the owner.
Years 2 to 5
Replacement heat exchanger, free of
charge. Installation and repair labour costs
are the responsibility of the owner.
All components
(only if the water heater is installed in a
single-family domestic dwelling with a preset
outlet temperature setting below 76°C)
The heat exchanger
(if the water heater is installed in a
single-family domestic dwelling with a preset
outlet temperature setting below 76°C)
The heat exchanger
(if the water heater is not installed in a
single-family domestic dwelling, and with a
preset outlet temperature setting below 76°C)
4. ENTITLEMENT TO MAKE A CLAIM UNDER THIS WARRANTY
4.1 To be entitled to make a claim under this warranty you need to:
a) Be the owner of the water heater or have consent of the owner to act on their behalf.
b) Contact Rheem Service without undue delay after detection of the defect and, in any event, within the applicable warranty period.
4.2 You are not entitled to make a claim under this warranty if your water heater:
a) Does not have its original serial numbers or rating labels.
b) Is not installed in Australia.
5. HOW TO MAKE A CLAIM UNDER THIS WARRANTY
5.1 If you wish 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 if that’s unavailable, the date of manufacture and serial number (from the rating label on the water heater).
b) Rheem will arrange for the water heater to be tested and assessed on-site.
c) If Rheem determines that you have a valid warranty claim, Rheem will repair or replace the water heater in accordance with this
warranty.
5.2 Any expenses incurred in the making of a claim under this warranty will be borne by you.
6. THE AUSTRALIAN CONSUMER LAW
6.1 Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or
refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have
the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
6.2 The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.
RHEEM AUSTRALIA PTY LTD, A.B.N. 21 098 823 511, www.rheem.com.au
For Service Telephone 131 031 AUSTRALIA or 0800 657 335 NEW ZEALAND
Revision Date: 2013 May
122180C
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