Enviroflo AR Series - Heat Pump Hot Water System
Operation & Installation Manual
MODELS
EHPA300VM EHPA300VMH
EHPA340VM EHPA340VMH
AR Series
Rinnai 2 EHPA Heat Pump OIM - Issue 1
This appliance must be installed in accordance with:
• Manufacturer’s Installation Instructions
• Current AS/NZS 3500
• Plumbing Code of Australia (PCA)
• Local Regulations and Municipal Building Codes
including local OH&S requirements
This system must be installed, commissioned, serviced,
maintained and removed ONLY by an Authorised Person.
NOT SUITABLE AS A POOL OR SPA HEATER
For continued safety of this appliance it must be installed and
maintained in accordance with the manufacturer’s instructions.
Standard: AS3498:2020
Licence Number: WMKA00169
SAI Global
Standard: AS/NZS 2712:2007
Licence Number: SMK1849
SAI Global
Rinnai 3 EHPA Heat Pump OIM - Issue 1
TABLE OF CONTENTS
Warnings and Important Information 4
Safety and Regulatory Information ����������������������������������������������������������������������������������������������������������������� 4
Transport and Storage of Appliance ��������������������������������������������������������������������������������������������������������������� 5
Scald Hazards ��������������������������������������������������������������������������������������������������������������������������������������������������� 6
Operating Principle ������������������������������������������������������������������������������������������������������������������������������������������ 7
System Schematic �������������������������������������������������������������������������������������������������������������������������������������������� 7
Safety Devices �������������������������������������������������������������������������������������������������������������������������������������������������� 8
Excessive Discharge from Safety Devices ���������������������������������������������������������������������������������������������������� 8
Hydrogen Gas ��������������������������������������������������������������������������������������������������������������������������������������������������� 9
Anodes ������������������������������������������������������������������������������������������������������������������������������������������������������������� 9
Turning O the Water Heating System ����������������������������������������������������������������������������������������������������������� 9
Turning On the Water Heating System ����������������������������������������������������������������������������������������������������������� 9
Draining and Filling ������������������������������������������������������������������������������������������������������������������������������������������ 9
Maintenance and Regular Care ����������������������������������������������������������������������������������������������������������������������� 9
Save a Service Call 10
Specications 12
System Specications ����������������������������������������������������������������������������������������������������������������������������������� 12
Dimensions ����������������������������������������������������������������������������������������������������������������������������������������������������� 13
Clearances ������������������������������������������������������������������������������������������������������������������������������������������������������ 14
Installation 15
Regulations and Occupation Health and Safety (OH&S) ���������������������������������������������������������������������������� 15
Location ���������������������������������������������������������������������������������������������������������������������������������������������������������� 15
Water Supply ��������������������������������������������������������������������������������������������������������������������������������������������������� 16
Storage Temperature ������������������������������������������������������������������������������������������������������������������������������������� 16
Hot Water Delivery Temperature ������������������������������������������������������������������������������������������������������������������� 16
Valves and Fittings ����������������������������������������������������������������������������������������������������������������������������������������� 16
Transport and Handling ��������������������������������������������������������������������������������������������������������������������������������� 17
Connect the PTR Valve ���������������������������������������������������������������������������������������������������������������������������������� 18
Plumbing Connections ���������������������������������������������������������������������������������������������������������������������������������� 18
Connect Cold / Hot Water Supply ����������������������������������������������������������������������������������������������������������������� 18
Connect Condensate Drain line �������������������������������������������������������������������������������������������������������������������� 19
Electrical Tests ����������������������������������������������������������������������������������������������������������������������������������������������� 19
Electrical Connections ����������������������������������������������������������������������������������������������������������������������������������� 19
Filling the System ������������������������������������������������������������������������������������������������������������������������������������������� 20
Commissioning and Finishing the Installation �������������������������������������������������������������������������������������������� 20
Wiring Diagram ����������������������������������������������������������������������������������������������������������������������������������������������� 20
Operation of Controller ��������������������������������������������������������������������������������������������������������������������������������� 21
Controller Layout and Keys �������������������������������������������������������������������������������������������������������������������������� 21
LED Icons �������������������������������������������������������������������������������������������������������������������������������������������������������� 22
Controller Functions and Operation ������������������������������������������������������������������������������������������������������������� 23
Wi-Fi Connection �������������������������������������������������������������������������������������������������������������������������������������������� 26
Wi-Fi - Troubleshooting ��������������������������������������������������������������������������������������������������������������������������������� 27
Connection of External Signals �������������������������������������������������������������������������������������������������������������������� 27
Contacts 28
Rinnai 4 EHPA Heat Pump OIM - Issue 1
SAFETY AND REGULATORY INFORMATION
WARNING
DO NOT operate this system before reading the manufacturers instructions.
This appliance must be installed, commissioned and serviced by an authorised person in
accordance with all applicable local rules and regulations.
Access covers of water heating system components will expose 240V wiring and MUST only be
removed by an authorised person.
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
For continued safety of this appliance it must be installed, operated and maintained in accordance
with the manufacturer’s instructions.
Children should be supervised to ensure they DO NOT play with the appliance.
The unit is rated at 15 amps (2 core and earth) so the power mains supplying the unit MUST
have a 20 amp minimum dedicated circuit breaker tted. If the power supply cable is damaged,
it MUST be replaced by an authorised person in order to avoid a hazard. Take care not to touch
the power connections or plugs with wet hands.
Care should be taken not to touch the pipe work as it may be HOT!
DO NOT place articles on or against this appliance.
DO NOT store chemicals or ammable materials near this appliance.
DO NOT operate with collectors or covers removed from this appliance.
DO NOT activate heat pump unless cylinder is full of water.
NEVER use a ammable spray such as hair spray, paint, etc near this unit as this may cause a
re.
RISK OF FIRE
This appliance uses R290 (propane) refrigerant, which is a ammable gas class 3 according to
AS 5149 and MUST be handled by a refrigeration mechanic with appropriate Australian refrigerant
handling licence. Refer to AS/NZS 60335.2.40 for ammable refrigerant handling requirements.
WARNING Risk of re / ammable material. If the refrigerant is leaked, together with an external
ignition source, there is a possibility of ignition.
WARNING
MANDATORY INSPECTION PRIOR TO INSTALLATION
Immediately report any damage or discrepancies to the Supplier of the appliance. This
appliance was inspected and tested at the time of manufacture and packaging, and released for
transportation without known damage. Upon receipt, inspect the exterior for evidence of rough
handling in shipment. Ensure that the appliance is labelled correctly for the gas and electrical
supply, and/or other services it is intended to be connected to.
For safety and warranty purposes, appliances that may be damaged or incorrect MUST NOT be
installed or operated under any circumstances. Installation of damaged or incorrect appliances
may contravene local government regulations. Rinnai disclaims any liability or responsibility
whatsoever in relation to the installation or operation of damaged or incorrect appliances.
NOTICE TO VICTORIAN CONSUMERS
This appliance must be installed by a person licensed with the Victorian Building Authority.
Only a licensed person will have insurance protecting their workmanship.
So make sure you use a licensed person to install this appliance and ask for your Compliance Certicate.
For further information contact the Victorian Building Authority on 1300 815 127
WARNINGS AND IMPORTANT INFORMATION
Rinnai 5 EHPA Heat Pump OIM - Issue 1
TRANSPORT AND STORAGE OF APPLIANCE
RISK OF FIRE
The refrigerant used in the heat pump (R290 Propane) is a ammable gas.
The appliance(s) shall be stored and transported in an area without ignition sources (for example:
open ames, an operating gas appliance or an operating electric heater)
DO NOT pierce or burn the appliance.
Be aware that refrigerants may not contain an odour.
Compliance with AS/NZS 5149 MUST be observed while storing the appliance.
IMPORTANT
National and state regulations exist for storage, handling and transport of hazardous goods
including ammable gasses. The maximum number of pieces of equipment or the conguration
of the equipment, permitted to be transported or stored together will be determined by the
applicable regulations.
IMPORTANT
IMPORTANT
DO NOT TILT
MORE THAN 45°
FROM VERTICAL
45°
The Rinnai Electric Heat Pump must be transported at an angle no greater that 45º from vertical. As the compressor
unit is located at the top of the electric heat pump, should the heat pump be tilted at a greater angle than 45º from
vertical, the lubrication oil within the compressor can run down into the mufers. This will leave the compressor
motor without sufcient lubrication and lead to premature failure of the compressor unit.
As a general good practice it is better to keep the compressor upright as much as possible to avoid any risks.
Returning the Rinnai Electric Heat Pump to a vertical position will allow the oil to properly ow back into the
compressor motor.
Tilting the system beyond 45º from vertical will also place undue strain on compressor motor mounts and associated
piping.
WARNING
Do not use means to accelerate the defrosting process or to clean, other than those recommended
by the manufacturer.
The appliance shall be stored in a room without continuously operating ignition sources. For
example, open ames, an operating gas appliance or an operating electric heater.
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
WARNINGS AND IMPORTANT INFORMATION
Rinnai 6 EHPA Heat Pump OIM - Issue 1
SCALD HAZARDS
HOT WATER CAN CAUSE SCALDS.
CHILDREN, DISABLED, ELDERLY AND THE INFIRM ARE AT THE HIGHEST RISK OF
BEING SCALDED.
FEEL WATER TEMPERATURE BEFORE BATHING OR SHOWERING.
SCALDS FROM HOT WATER TAPS CAN RESULT IN SEVERE INJURIES TO YOUNG
CHILDREN.
SCALDS OCCUR WHEN CHILDREN ARE EXPOSED DIRECTLY TO HOT WATER WHEN
THEY ARE PLACED INTO A BATH WHICH IS TOO HOT.
ALWAYS......
Test the temperature of the water with your elbow before placing your child in the bath, also carefully
feel water before bathing or showering yourself.
Supervise children whenever they are in the bathroom.
Make sure that the hot water tap is turned o tightly.
CONSIDER.....
Installing child proof tap covers or child resistant taps (both approaches will prevent a small hand being
able to turn on the tap).
Installing tempering valves or thermostatic mixing valves which reduce the hot water temperature
delivered to the taps. Your local plumbing authority may already require that these be tted. Contact
your installer or local plumbing authority if in doubt.
NEVER….
Leave a toddler in the care of another child. They may not understand the need to have the water
temperature set at a safe level.
WARNINGS AND IMPORTANT INFORMATION
Rinnai 7 EHPA Heat Pump OIM - Issue 1
OPERATING PRINCIPLE
The operation of an electric heat pump is very similar to a refrigerator, but in reverse. A heat pump operates by
transferring heat from the ambient outside air into the water. Electricity is just used to operate the system, but not
to directly heat the water. Because of this energy consumption is signicantly reduced as compared to an electric
element hot water system. The warmer the climate in which the heat pump is installed, the more efcient the heat
pump system will be at heating water.
The heat pump unit includes highly efcient micro-channel heat exchanger wrapped around the inner cylinder
for thermal conductivity. A temperature sensor in the tank is used to control the heat pump operation to achieve
suitable tank temperature.
During the occasional times when the ambient weather conditions are not suitable for the heat pump to operate,
the electric element will provide heating to ensure a supply of hot water.
SYSTEM SCHEMATIC
EVAPORATOR
FILTER
EEV
HIGH PRESSURE
SWITCH
WATER TANK
HEAT EXCHANGER
MICRO-CHANNEL
COMPRESSOR
4 WAY
VALVE
DISCHARGE LINE SENSOR
SUCTION LINE SENSOR
WARNINGS AND IMPORTANT INFORMATION
Rinnai 8 EHPA Heat Pump OIM - Issue 1
SAFETY DEVICES
The water heating system is supplied with various safety devices including temperature sensors, overheat sensors
and switches and a Pressure & Temperature Relief (PTR) valve. These devices must not be tampered with or
removed. The water heating system must not be operated unless each of these devices is tted and is in working
order.
WARNING
DO NOT tamper with or remove safety devices.
DO NOT operate the water heater unless all safety devices are tted and in working order.
DO NOT block or seal the PTR Valve and drain pipe.
Pressure & Temperature Relief (PTR) Valve
This valve is located near the top of the water heater and is
essential for safe operation. It is normal for the valve to release
a small quantity of water through the drain line during heating.
However, continuous leakage of water from the valve and its
drain line may indicate a problem with the water heater.
WARNING
NEVER block the outlet of the PTR valve or it’s drain line for any reason. The easing gear MUST
be operated at least every 6 months to remove lime deposits and verify that it is not blocked.
Failure to do this may result in the water heater failing.
If the valve does not discharge water when the easing gear lever is opened, or does not seal again
when the easing gear is closed, attendance by an authorised person MUST be arranged without
delay. The PTR valve is not serviceable.
EXCESSIVE DISCHARGE FROM SAFETY DEVICES
Pressure & Temperature Relief (PTR) Valve
It is normal and desirable that this valve allows a small quantity of water to be discharged during the heating cycle.
If it discharges more than a bucket of water during a 24 hour period or discharges continuously there may be
another problem.
If the valve dribbles continuously, try easing the valve gear for a few seconds as described above. This may
dislodge any foreign matter and alleviate the problem.
If the valve discharges at high ows, especially at night, it may be as a result of the water pressure exceeding the
design pressure of the water heater. Ask your installer to t a Pressure Limiting Valve (PLV).
WARNING
NEVER replace the PTR valve with one which has a higher pressure rating than is specied for
your water heater.
Expansion Control Valve (ECV) - if required
It is normal that this valve allows a small quantity of water to be discharged during the heating cycle. If it discharges
more than a bucket of water during a 24 hour period or discharges continuously there may be another problem.
If the valve leaks continuously, try easing the valve gear for a few seconds. This may dislodge any foreign matter
which may be causing the problem. If this does not x the issue, contact Rinnai.
Operate the easing gear regularly to remove any lime deposits and to verify that it is not blocked.
Lift lever until w ater
flo w s fro m drain line
(Low er lever gently !)
WARNINGS AND IMPORTANT INFORMATION
Rinnai 9 EHPA Heat Pump OIM - Issue 1
HYDROGEN GAS
If the hot water unit is not used for two weeks or more, a quantity of hydrogen gas, which is highly ammable,
may accumulate in the water heater. To dissipate this safely, it is recommended that a non electrically operated
hot tap be turned on for two minutes at a sink, basin, or bath, but not a dishwasher or other appliance. During
this procedure there must be no smoking, open ame or any electrical appliance operating nearby. If hydrogen is
discharged through the tap, it will probably make a sound like air escaping.
ANODES
The water heater is tted with sacricial anodes to extend it’s life. They will slowly dissipate whilst protecting the
cylinder. The life of the water heater may be extended by arranging for an authorised person to inspect the anodes
and replace them as required. It is recommended that the anodes be inspected at least every 5 years. The factory
tted Rinnai anodes are Magnesium based. These anodes are suited to conditions where the total dissolved solids
(TDS) content in the water supply does not exceed 600 mg/L, (which is the case in most areas). In areas where
the total dissolved solids (TDS) content in the water supply exceeds 600 mg/L Rinnai aluminium based anodes
are required.
TURNING OFF THE WATER HEATING SYSTEM
If you plan to be away for only a few nights, we suggest you leave the water heating system switched on. If it is
necessary to switch off the water heater, do so as outlined below:
WARNING
DO NOT turn power o to the heat pump unit if snow or frost conditions are expected as components
in the system may be damaged by freezing. If power needs to be turned o or power failure occurs
and freezing conditions are expected, the water needs to be drained from the heat pump unit.
Follow the procedure described below in the section ‘Draining and Filling’.
TURNING ON THE WATER HEATING SYSTEM
Switch on the electric supply to the heat pump unit. Water heating will now occur as required. It may take a number
of hours before hot water is available.
DRAINING AND FILLING
Draining or lling of the complete system normally only occurs during installation or servicing and must be carried
out by an authorised person.
Draining water from the heat pump unit is necessary if the power will be shut off to the unit and snow or frost
conditions are expected. Arrange for an authorised person to carry out this task.
To drain the heat pump:
1. Turn off power to the heat pump.
2. Close the cold water mains supply stop cock.
3. Open a hot tap to relieve pressure.
4. Disconnect the hot outlet near the top of the storage cylinder.
5. Disconnect the cold inlet near the bottom of the storage cylinder.
6. The system will now drain completely.
MAINTENANCE AND REGULAR CARE
Operate the easing gear of the PTR and the ECV if tted as described in the section ‘Safety Devices’ on page 8.
The overow tray (supplied by installer) and drain underneath the storage cylinder (if tted) should be periodically
checked to ensure there are no blockages.
WARNING
DO NOT drill, screw or x any ancillary items to the outer case of the tank. This product is
tted with a high eciency heat exchanger attached to the inner cylinder, anything penetrating
the outer skin of the tank may damage the heat exchanger. Rinnai’s warranty will not cover any
resultant faults.
WARNINGS AND IMPORTANT INFORMATION
Rinnai 10 EHPA Heat Pump OIM - Issue 1
Rinnai’s servicing network personnel are fully trained and equipped to give the best service on your Rinnai
appliance. If your appliance needs service, ring one of the service contact numbers on the back of this booklet.
The pressure and temperature relief valve and expansion control valve (if tted) must be replaced by an authorised
person at intervals not exceeding 5 years or more frequently in areas where the water is classied as scaling water.
If the power supply cord to the heat pump unit is damaged, they must be replaced by an authorised person in order
to avoid a hazard.
Use the following guide to avoid the need for an unnecessary service call.
INSUFFICIENT OR NO HOT WATER
Heat Pump Unit Not Powered Check to ensure the electric isolating switch at the
switchboard (usually marked “Hot water” or “Water
heater” is turned on. (note that the compressor will not
start up for 2 minutes after power is turned on).
Excessive hot water consumption Often end users are surprised at the amount of hot water
used, especially when showering. If the amount of hot
water used during the day exceeds the storage capacity
of the cylinder, it is likely there will be insufcient hot water.
Pressure & Temperature Relief (PTR) Valve
continually discharging water
It is normal and desirable that this valve allows a small
quantity of water to be discharged during the heating
cycle. If it discharges more than a bucket of water during
a 24 hour period or discharges continuously there may be
another problem.
If the valve dribbles continuously, try easing the valve gear
for a few seconds as described in the section ‘Excessive
Discharge from Safety Devices’ on page 8. This may
dislodge any foreign matter and alleviate the problem.
If the valve discharges at high ows, especially at night,
it may be as a result of the water pressure exceeding the
design pressure of the water heater. Ask your installer to
t a Pressure Limiting Valve (PLV).
Expansion Control Valve (ECV) continually
discharging water
It is normal and desirable that this valve allows a small
quantity of water to be discharged during the heating
cycle. If it discharges more than a bucket of water during
a 24 hour period or discharges continuously there may be
another problem.
If the valve leaks continuously, try easing the valve gear
for a few seconds as described in the section ‘Excessive
Discharge from Safety Devices’ on page 8. This may
dislodge any foreign matter and alleviate the problem. If
this does not alleviate the problem contact Rinnai.
Ambient conditions too hot To protect the components of the heat pump unit it may
not operate when the ambient temperature is higher than
45°C. The heating element will operate if water heating is
required, but may take longer to heat the water.
Ambient conditions too cold To protect the components of the heat pump unit it may
not operate when the ambient temperature is less than
-7°C. The heating element will operate if water heating is
required.
NO WATER FROM THE TAP
Restriction in the hot tap or failure of the cold
water supply to the water heater
Check for water ow at the other taps and that the cold
water isolation valve is fully open.
SAVE A SERVICE CALL
Rinnai 11 EHPA Heat Pump OIM - Issue 1
HIGH ELECTRICITY BILLS
Excessive hot water consumption See entry under the heading ‘Insufcient or no hot water’
High Electricity Taris The electricity tariff will determine the running costs
of the system. It is important the end user is aware of
the applicable tariffs. Contact your electricity supplier to
conrm what these tariffs are.
Higher Element Usage In extremely cold conditions the element may be operating
more than normal.
WATER FLOW FLUCTUATIONS
One or more hot taps opened at the same
time
More than one or two hot taps in use at the same time
may cause a decrease in the hot water ow from the taps.
Is there more than one or two hot taps open, or are
appliances such as a dishwasher or washing machine, in
use at the same time?
Ensure only one or two hot taps are on at one time.
WATER HAMMER
Hot and cold water plumbing in the premises Have a plumber check clipping of hot and cold water
pipe work and install a pressure limiting valve and water
hammer arrestor as required.
HEAT PUMP ICES UP
Defrosting function The heat pump has a built in hot bypass defrosting
function which may operate and remove any ice.
HEAT PUMP ERROR INDICATOR*
Error
code
Error Description Possible Causes
E01 Ambient temperature sensor fault Sensor fault/Connection is loose
E02 Upper tank temperature sensor fault Sensor fault/Connection is loose
E03 Discharge temperature sensor fault Sensor fault/Connection is loose
E04 Evaporator temperature sensor fault Sensor fault/Connection is loose
E05 Suction temperature sensor fault Sensor fault/Connection is loose
E06 Lower tank temperature sensor fault Sensor fault/Connection is loose
E07 High pressure switch protection Pressure switch is open circuit /Connection is loose/EEV
fault/Refrigeration system is blocked
E08 Discharge temperature too high Lack of refrigerant/system leak
E09 Low supply voltage Mains power voltage is too low
E10 High supply voltage Mains power voltage is too high
*If an error code is displayed on the control unit please contact Rinnai Customer Care Immediately.
SAVE A SERVICE CALL
Rinnai 12 EHPA Heat Pump OIM - Issue 1
SYSTEM SPECIFICATIONS
Model
EHPA300VM
EHPA300VMH
EHPA340VM
EHPA340VMH
Net Weight / Filled Weight 128 kg / 428 kg 138 kg / 478 kg
Tank Volume 300 L 340 L
Ambient Temperature Limits
(for heat pump operation - element will
operate beyond these limits)
-7°C to 45°C
Ingress Protection IP24
Storage Cylinder - Hot Outlet and Cold inlet
Connections
ISO 7.1 ¾” RP
Storage Cylinder - PTR Valve Connection ISO 7.1 ½” RP
Pressure & Temperature Relief (PTR) Valve
(Supplied) Setting / Rating
1000 kPa / 10kW
ECV Fitted
Fit PLV if mains
pressure exceeds
680 kPa
Recommended PLV
pressure rating
500 kPa
ECV Not Fitted
Fit PLV if mains
pressure exceeds
800 kPa
Recommended PLV
pressure rating
500 kPa
Rated Input Electric Element
(Factory Wired)
2.4 kW
Maximum Input Refrigeration Module
(Factory Wired)
1.2 kW
Total Maximum Input 3.4 kW
Maximum Energy Output
(Use to size PTR)
7.5 kW
Power Supply 220V-240V AC/50 Hz.
Switchboard Power Circuit 20 Amp Dedicated Safety Switch Circuit Breaker
Maximum Current 14.5 Amps (15 Amps rating power supply)
Sound Pressure Level* 45 dB(A)
Refrigerant Type / Mass R290 / 380 g
Refrigerant Circuit Maximum Pressure 3000 kPa
Coefcient Of
Performance (COP)
32.6°C Ambient
21.1°C cold water inlet
8.4
Heat Output
32.6°C Ambient
21.1°C cold water inlet
4.4 kW
*Sound Pressure Level @1.5m. Sound Levels on installations can be higher due to noise reections from nearby surfaces and
structures.
SPECIFICATIONS
SPECIFICATIONS
Rinnai 13 EHPA Heat Pump OIM - Issue 1
DIMENSIONS
Model
EHPA300VM
EHPA300VMH
EHPA340VM
EHPA340VMH
Cylinder height 1925 mm 2095 mm
Hot water outlet / PTR height 1259 mm 1429 mm
Cold water inlet height 116 mm
Cylinder diameter 652 mm
Cold
Inlet
Height
Hot Outlet
/ PTR Height
Cylinder Diameter
Height
PTR
Hot
Outlet
Drain
Cold
Inlet
AR Series
SPECIFICATIONS
Rinnai 14 EHPA Heat Pump OIM - Issue 1
CLEARANCES
Always allow 500 mm minimum clearance on the fan discharge side and 150 mm minimum clearance on the fan
suction side to allow for sufcient air ow through the fan.
Allow 300 mm minimum vertical clearance for service access and 300mm to the front for control operation.
500 mm
150 mm
300 mm
AR Series
100 mm
500 mm
300 mm
50 mm
150 mm
SPECIFICATIONS
Rinnai 15 EHPA Heat Pump OIM - Issue 1
REGULATIONS AND OCCUPATION HEALTH AND SAFETY
(
OH&S
)
WARNING
Installation and commissioning MUST be performed by authorised persons.
The heat pump MUST be installed in accordance with these instructions and all regulatory
requirements which exist in your area including those in relation to manual lifting.
Applicable publications and regulations may include:
•
AS/NZS 3500 National Plumbing and Drainage
•
AS/NZS 3000 Wiring Rules
•
Building Codes of Australia (BCA)
•
Local Occupational Health and Safety (OH&S) regulations
This appliance is not suitable for use as a domestic spa pool or swimming pool heater.
Electric Heat pumps are heavy and bulky items. Australian States and Territories have a Principal
Occupational Health and Safety (OH&S) Act which contains requirements relating to the handling
of large, bulky or awkward items. Persons installing heat pump systems MUST be aware of
their responsibilities and be adequately trained and qualied, in accordance with local OH&S
requirements.
LOCATION
The electric heat pump can be installed externally or internally.
The electric heat pump should be placed as close as practicable to the most frequently used hot water outlet point
or points to minimise the delay time for hot water delivery. This will usually be the kitchen tap. For installations
where the distance between the heat pump and the outlets is considerable, a ow and return system can be
used which minimise the waiting time for hot water delivery. We recommend not to install the unit close to where
operational sound levels may cause occupant disturbances, such as bedrooms.
It is recommended that all components are installed at ground or oor level with consideration for easy service,
repair or replacement access.. The heat pump MUST be installed in a vertically upright position. All components
MUST be accessible without the use of a ladder or scaffold. The unit MUST NOT be installed in roof spaces.
WARNING
Ensure the location complies with the requirements of AS/NZS 60335.2.40 & AS/NZS 5149.
The air inlet and outlet of the heat pump module MUST be away from areas with strong wind and MUST be
provided with sufcient clearances as per those shown in the section ‘Clearances’ on page 14.
The heat pump MUST be connected to an independent AC 240 V, 50 Hz power supply, 20 Amp Dedicated Safety
Switch Circuit Breaker and 20 Amp Weatherproof Isolating Switch
Ensure the pressure and temperature pressure relief (PTR) valve and any access covers have sufcient clearances
and are accessible for service and removal. The information on the rating plates MUST also be readable.
The heat pump MUST be installed free-standing on a level and stable base. The cylinder should be mounted on a
concrete base at least 50mm thick or on well-seasoned, evenly spread hardwood slats with a thickness of at least
25mm. Where property damage can occur as a result of water leakage, the storage cylinder MUST be installed
with a safe tray (overow tray) and drain in accordance with AS 3500.4. Ensure the storage cylinder DOES NOT
stand on wet surfaces.
Internal Installation
For internal installations the area MUST meet the following requirements:
•
Minimum room volume of 55m
3
per unit.
•
Good Ventilation (i.e minimum 280 L/s per unit)
•
Away from any ignition sources or corrosive environments.
If the heat pump is installed internally careful consideration should be taken in regards to positioning and limiting
the effect of unit noise and reverberation during operation, which may cause noise disturbances otherwise.
INSTALLATION
Rinnai 16 EHPA Heat Pump OIM - Issue 1
Condensation
As this heat pump is highly efcient, the surrounding air temperature could be cooled by up to 4°C and condensate
formed, the condensate outlet will need to be plumbed to a suitable drain.
Drainage
Where property damage can occur as a result of water leakage, the water heater MUST be installed with a safe
tray (overow tray) and drain. Construction, installation and draining of the safe tray MUST comply with local
regulatory requirements and. AS/NZS 3500.4 also requires the use of a safe tray for particular situations.
WATER SUPPLY
This appliance is intended to be permanently connected to the water mains and not to be connected by a hose set.
The maximum water pressure is listed on page 12. An approved pressure limiting valve may be required if the
maximum rated water supply pressure is exceeded.
Water chemistry and impurity limits are detailed in the separate warranty document. Most metropolitan water
supplies fall within these requirements. If you are unsure about water quality and suitability, contact your water
authority.
A water lter MUST be tted on the inlet to the tank to prevent sludge or foreign matter entering the system.
In a scaling water supply, calcium carbonate and possibly other compounds are deposited out of the water onto
any hot metallic surface and form a scale. Scaling water may cause scale deposits to form onto the metallic
surfaces of the PTR valve and may prevent it from operating properly. To prevent this, an expansion control valve
(ECV) MUST be tted on the cold water line after the non-return valve in areas of scaling water. ECVs’ MUST
be tted in South Australia and Western Australia to comply with local regulations.
STORAGE TEMPERATURE
If the tank water temperature is set below 60°C, the system will automatically override this setting once a week to
activate the disinfection cycle, heating the water to 60°C to meet regulatory requirements. This setting can not be
altered.
HOT WATER DELIVERY TEMPERATURE
This appliance may deliver water at high temperature. Refer to the Plumbing Code of Australia (PCA), local
requirements and installation instructions to determine if additional delivery temperature control is required.
The PCA, local regulations and the requirements of AS/NZS 3500.4 MUST be considered regarding the
temperature limitations of hot water supplied to areas used primarily for personal hygiene.
The temperature of water to certain areas is limited to different temperatures according to purpose, for e.g. early
childhood centres, primary and secondary schools and nursing homes or similar facilities for young, aged, sick
or people with disabilities and for all other buildings. To comply with these requirements, a temperature limiting
device, such as a thermostatic mixing or tempering valve, will be required on hot water systems.
VALVES AND FITTINGS
IMPORTANT
A 10 kW capacity, combined Pressure and Temperature Relief (PTR) valve is supplied with the
Heat Pump hot water system. This valve is tted at the top of the storage cylinder. The PTR
valve is a safety device and it is mandatory that it is tted by the installer in all installations..
The following valves & ttings are to be supplied by the installer:
•
A cold water expansion control valve (ECV). An ECV MUST be tted in Western Australia and South Australia
to the cold water supply to the storage cylinder to comply with local regulations. An ECV is recommended in
all other geographical areas where the water supply has a tendency to cause scaling. This will reduce hot
water discharge from the pressure and temperature relief (PTR) valve which minimises wear on this valve.
•
A stop cock, non return valve and line strainer. Combination valves incorporating two or more of these
functions (such as ‘Trio’ valves) are suitable. These are tted to the cold water supply to the storage cylinder
by the installer.
•
Cold water supply and hot water discharge pipework to and from the storage cylinder. This pipework MUST
be insulated as specied in AS/NZS 3500.4
•
An approved pressure limiting valve (supplied with some systems) is required if the maximum rated water
supply pressure on page 12 is exceeded.
•
Tempering valve(s) or thermostatic mixing valve
INSTALLATION
Rinnai 17 EHPA Heat Pump OIM - Issue 1
TRANSPORT AND HANDLING
IMPORTANT
When moving the unit, it MUST be close to vertical at all times.
When using a trolley to move the unit, ensure it is not tilted more than 45° from the vertical.
Non compliance will void warranty and severely aect product performance and operation
The Rinnai Electric Heat Pump MUST be transported at
an angle no greater that 45º from vertical.
As the compressor unit is located at the top of the electric
heat pump, should the heat pump be tilted at a greater
angle than 45º from vertical, the lubrication oil within the
compressor can run down into the mufers.
This will leave the compressor motor without sufcient
lubrication and lead to premature failure of the compressor
unit.
As a general good practice it is better to keep the
compressor upright as much as possible. Returning the
Rinnai Electric Heat Pump to a vertical position will allow
the oil to properly ow back into the compressor motor.
Tilting the heat pump beyond 45º from vertical will also
place undue strain on compressor motor mounts and
associated piping.
45°
Never tilt unit more than 45˚ from vertical
POSITIONING THE HEAT PUMP
Arrive at site and conduct a safety audit. Safety audits can also be known
as Work Method Statements (WMS) or Job Site Analysis (JSA).
Park your vehicle as close as allowable to your installation. Unload all
materials in a safe manner.
Position all materials in a convenient position near the work area.
Where the requirements for internal installation can’t be met, the heat
pump MUST be installed outdoors.
The location MUST consider noise impact on living areas. Avoid
positioning near bedrooms or neighbours’ bedrooms. Although the
running noise level is very low it can be expected that the heat pump will
run during the night.
Adequate access MUST be available to the relief valve and anodes.
Safely position the new unit on a level surface in accordance with all
plumbing and building regulations.
A properly drained overow tray MUST be used where property
damage could occur from water spillage. (See AS/NZS 3500.4.2 for
further details.)
NOTE
DO NOT drain on to grass or garden beds.
DO NOT commence a job where the risks cannot be
controlled.
Allow 200m
3
of free space surrounding the unit. This provides clear
ambient airow assisting the product’s performance. Ensure the
clearance requirements specied in the section ‘Dimensions’ on page
13. are complied with. The area MUST also be clear of debris such
as leaves and tree branches.
Install a plinth under the heat pump
where it is subjected to wet conditions
r
e
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r
r
e
d
i
n
s
t
a
l
l
a
t
i
o
n
p
o
s
i
t
i
o
n
Optimum installation location is on the
warmest side of house.
INSTALLATION
Rinnai 18 EHPA Heat Pump OIM - Issue 1
CONNECT THE PTR VALVE
Connect the PTR valve to the uppermost tting of the storage cylinder. See the diagram in the section ‘Dimensions’
on page 13.
The PTR pressure rating MUST be suited for the cylinder and adequate for the thermal loading applied to the
storage cylinder, as specied in the table on page 12. The supplied PTR valve input rating is 10 kW. The PTR
valve rating MUST EXCEED the total input from the heat pump (see the table on page 12). As this is less than
10 kW, the supplied PTR valve is of sufcient capacity.
Use PTFE (Teon) thread tape on the valve, never use hemp or other sealing materials. Ensure the tape does not
protrude past the end of the thread, which could result in it hanging over the end of the thread and blocking the
water passage through the valve.
Connect the supplied PTR valve into the top socket marked “Relief Valve” Leave the valve outlet pointing down.
Tighten the valve using the spanner ats - never use the valve. Discharge according to plumbing regulations. PTR
Valves for the unit are rated at 1000 kpa.
The drain line from this valve MUST run in a continuously downward direction with the discharge end left
permanently open to atmosphere.
PLUMBING CONNECTIONS
Refer to the diagram on page 13 for detailed information on position of plumbing.
An approved isolating valve, non return valve, line strainer, and union MUST be tted between the supply main
and the RP ¾ socket in the water heater. All ttings MUST be approved by the relevant installation Authority.
An ECV MUST be tted in Western Australia and South Australia to the cold water supply to the storage cylinder
to comply with local regulations.
An ECV is recommended in all other geographical areas where the water supply has a tendency to cause scaling.
This will reduce hot water discharge from the Pressure and Temperature Relief (PTR) valve which minimises wear
on this valve.
This water heater is designed for direct connection to water supply pressures of no greater than those specied
on page 12. Where the mains pressure can exceed or uctuate beyond this, a pressure limiting (PLV) device
(complying with AS1357) MUST be tted.
CONNECT COLD / HOT WATER SUPPLY
Connect cold water supply, Pressure Limiting Valve (PLV) and or Expansion Control Valve (ECV).
Connect cold water supply to the storage tank (refer to Diagram BELOW).
A stop cock, non return valve and line strainer MUST be tted.
Connect the pipe work supplying hot water to the premises to the hot water outlet on the tank.
A temperature limiting device may be required as detailed in the section the section ‘Hot Water Delivery Temperature’
on page 16
It is recommended that all hot water lines are insulated with high temperature, UV resistant 13mm closed cell
insulation.
D ra in
Union Connection
Non-return ValveLine Strainer
Cold Water Inlet
Isolating Valve (Spindle Vertical)
Cold water expansion
control valve
INSTALLATION
Rinnai 19 EHPA Heat Pump OIM - Issue 1
CONNECT CONDENSATE DRAIN LINE
A condensate drain line MUST be tted to carry discharge clear of the water heater.
The condensate drain line should not be connected to the PTR drain line but can exit
to the same point.
The diagram shows the condensate drain location on the heat pump. Use the
supplied PVC pipe (inner diameter 19mm, UV resistant) and clamp to connect to the
condensate outlet.
Independent 15mm copper pipes MUST be tted to the PTR and ECV drain outlets.
Each pipe MUST be open to atmosphere and run with a continual downward grade
in a frost free environment to a visible discharge point.
Drain lines MUST NOT exceed 9 meters in length. Valves or other restrictions MUST NOT be placed in the
relief valve drain outlet line.
ELECTRICAL TESTS
DO NOT turn on the power supply to the appliance until it has been lled with water and a satisfactory insulation
(Megger) test has been performed.
Conducting Insulation (Megger) Tests
When conducting an insulation test using a Megger on this appliance, observe the following:
WARNING
This appliance contains electronic components, when performing insulation tests (500 Volts)
this MUST ONLY be conducted the across active terminal to earth and then across the neutral
terminal to earth.
Tests between the active to neutral terminals MUST NOT be performed as this WILL damage
the electronic components.
Insulation test results of between 100 kΩ and 660 kΩ are normal for this appliance.
In accordance with AS/NZS 3000 an insulation test with a result less than 1 MΩ is permitted where the appliance
is approved to a Standard applicable to that class of appliance.
This appliance is categorised and certied as a ‘stationary Class 1 motor operated appliance’ and therefore
satises the requirements of AS/NZS 60335.2.40 for leakage current and electric strength. As such, this appliance
complies with the insulation resistance requirements of AS/NZS 3000.
ELECTRICAL CONNECTIONS
WARNING
The power supply to the heat pump module MUST NOT be activated until the system is lled
with water.
The premises wiring to the heater MUST be capable of withstanding the appliance load. Refer to
specication table for load details.
All electrical connections and wiring MUST be installed, maintained and removed by authorised
persons in accordance with AS/NZS 3000, and all other relevant local regulations and municipal
building codes including OH&S requirements.
IMPORTANT
The Heat Pump is NOT equipped with a power cord and plug and MUST be hard-wired to an
isolating switch with dedicated circuit as per the wiring rules. The supply terminals MUST be
connected to an independent AC 240V 50Hz power supply with a 20 Amp safety switch. The
isolator MUST eectively isolate all active supply conductors from the circuit. A method for
disconnection MUST be incorporated into the xed wiring in accordance with the relevant wiring
rules and regulations.
In Australia, a Residual Current Circuit Breaker (RCD) must be installed to the power supply for
this appliance.
IMPORTANT
Disconnect all power prior to installation and commissioning.
This appliance is designed for single phase 240 Volts, AC mains electrical operation.
Condensate
Drain
INSTALLATION
Rinnai 20 EHPA Heat Pump OIM - Issue 1
WIRING DIAGRAM
Terminal Block
Compressor
Element
4 Way Valve
Fan Motor - High/Low Speed
Electronic Expansion Valve
High Pressure Switch
Lower Tank Temp Sensor
Suction Temp Sensor
Ambient Temp Sensor
Upper Tank Temp Sensor
Discharge Temp Sensor
Evaporator Temp Sensor
Solar Photovoltaic input
Off-peak tariff input
EEV
Hi
14AWG BROWN
FANS
4-WAYPUMP
SV
COMP
ELE
TlTsTaTuTd
Te
HPOPPVLP
CN1
EEV
COMCOM
SW
Fuse
COM
Transformer
4WV
FAN
Lo
N
80
240VAC 25A
THERMAL PROTECTOR
Non self-reset
XT
BLUE
BLACK
14AWG
16AWG
16AWG
14AWG
16AWG
COMP
BLUE
BLUE
14AWG
ELE
14AWG
16AWG
grey
RED
LOWER TAN
K
SUCTION
AMBIENT
UPPER TANK
DISCHARGE
EVAPORATOR
HPS
Model
SW-1
SW-2 SW-3 SW-4
EHPA300VM ON OFF OFF *
EHPA300VMH ON OFF OFF *
EHPA340VM OFF OFF OFF *
EHPA340VMH OFF OFF OFF *
*SW-4: off Peak-valley power supply (default: OFF)
Dipswitch Selection
XT
COMP
ELE
4WV
FAN
EEV
HPS
LOWER TANK
SUCTION
AMBIENT
UPPER TANK
DISCHARGE
EVAPORATOR
PV
OP
FILLING THE SYSTEM
Open hot water tap at sink.
Open the stop cock in the cold water main supply line. Allow the system to ll and the air to bleed through the tap.
Turn off the hot tap at the sink when water ows freely without any air bubbles or air bursts. If leaks are detected,
repair any leaks and repeat the lling process to remove any air.
If no leaks are detected water heating can commence.
COMMISSIONING AND FINISHING THE INSTALLATION
IMPORTANT
Please conrm the followings before commissioning:
•
Piping and electrical wiring are all correct and Earthing wire is installed properly.
•
Pipe insulation is completed
•
Tank is lled
•
Supply Voltage complies with rated voltage
•
Air intake and discharge are not obstructed
Turn on the heat pump unit and wait a few seconds for the system to start. Change operation mode or water
temperature setting if required (it is recommended to retain default setting).
After testing is completed demonstrate the functions and operation of heat pump water heater components to the
householder. Explain the need to drain the heat pump if freezing conditions are likely and when power may be shut
off for an extended time.
Also explain the importance of performing maintenance in accordance with this manual. Leave the manual with
the householder.
WARNING
DO NOT drill, screw or x any ancillary items to the outer case of the tank. This product is
tted with a high eciency heat exchanger attached to the outer cylinder, anything penetrating
the outer skin of the tank may damage the heat exchanger. Rinnai’s warranty will not cover any
resultant faults.
INSTALLATION
Rinnai 21 EHPA Heat Pump OIM - Issue 1
OPERATION OF CONTROLLER
When the heat pump turns on, the control system initiates and will check the unit’s operating parameters. The
controller will check on all sensors and pressure switches. If conditions are suitable (i.e all reading within the
reasonable range) and there is enough energy available in the surrounding air, the fan and compressor will turn
on. If not enough energy is detected in ambient air then the controller calls for the booster heating element to run.
There will be a delay from the time the heat pump is switched on before the fan and compressor begin operating.
The unit is self regulating so there are no internal adjustments to be made during commissioning. When the unit is
operated for the rst time, it runs through an initial heat up cycle, allow time for the initial heat up cycle. Depending
on the ambient conditions this can take several hours.
If for any reason the unit does not start, the water is cold and the controller unit is not displaying any LED lights, an
electrician should test that power is available to the heat pump.
CONTROLLER LAYOUT AND KEYS
All major functions are controlled by the Control Panel situated on the front of the unit.
Weatherproof Cover
Carefully ip up the weatherproof cover and ensure not open it more than 90°. To close, gently press it until the
locking tabs at the bottom lock in place (See drawing above).
Key Primary Functions
The following table describes the primary function of each key on the controller
Key Icon Primary Functions
SET
1. Enter value setting or saves changes
2. Operation data query (press and hold the key for 3s)
TIMER
1. Sets the clock
2. Sets the timer (press and hold the key for 3s)
MODE 1. Switches operating modes
ON/OFF
1. Unlocks the screen
2. Turns unit on or off (press and hold for 3s)
3. Used as a return button in parameter setting
UP
1. Increases set temperature
2. Navigates parameter setting
DOWN
1. Decreases set temperature
2. Navigates parameter setting
IMPORTANT
Ensure the controller unit is not displaying an Error Code once unit has been switched on. If it is
refer to the section ‘Save a Service Call’ on page 10
SET TIMER
MODE
ON/OFF
STANDARD ECO HYBRID ELECTRIC VACATION
<90°
OPERATION
Rinnai 22 EHPA Heat Pump OIM - Issue 1
Key Combinations
The keys can also be used in specic combinations to provide additional functions:
Keys Function
Press and hold for 3 seconds to enter WiFi connection mode
Press and hold for 3 seconds to activate manual defrost function
Press and hold for 3 seconds to activate manual disinfection function
Press and hold for 3 seconds to restore factory setting
LED ICONS
Symbol Function Meaning when lit Meaning when ashing
STANDARD
Standard heating mode Mode active -
ECO
Economy heating mode Mode active -
HYBRID
Hybrid heating mode Mode active -
ELECTRIC
Electric heating mode Mode active
VACATION
Vacation mode Mode active -
Real water temperature Display current water temperature -
Set water temperature Display set water temperature -
Maintenance reminder Maintenance required -
Screen lock Screen locked Still locked (2Hz ashing)
Compressor Compressor active -
Fan Fan active -
Element Element active
Disinfection operation
(1Hz ashing)
Defrosting Defrosting active -
WiFi WiFi connected
Searching for network
(1Hz ashing)
Timer
Timer active (number 1,2,3 will be
lit accordingly)
-
OPERATION
Rinnai 23 EHPA Heat Pump OIM - Issue 1
CONTROLLER FUNCTIONS AND OPERATION
1. Turn ON/OFF the heat pump:
In normal display status, press the “
“ key for 3 seconds to turn on or turn off the unit. The unit will enter the mode
and setting it was in prior to shutdown (or factory default setting if it is the rst time powering on).
When turning off the unit, the unit will not function and the display will lock and show OFF.
2. Lock and unlock:
If there is no key operation for 90 seconds, the screen will lock and go blank automatically. Press any key to light
the screen. The “
” icon will be lit indicating it is locked. Press the “ ” key for 3 seconds to unlock.
3. Operation Mode selection
Press the “
” key to cycle modes in the sequence: STANDARD → ECO → HYBRID → ELECTRIC → VACATION.
NOTE
The system default mode is ECO. When the unit is switched on for the rst time, the system will
operate under ECO mode. Subsequently, the unit will start in the mode setting it was in prior to
shutdown.
No. Mode Product
Model
Set Point - Factory
Default (°C)
Restart
Dierential (°C)
Set Point
Range (°C)
1 STANDARD All models 60.5 * 5 15~61
2 ECO
(Factory default)
EHPA300VM
60.5 * 12 15~61
EHPA300VMH
EHPA340VM
60 11 15~61
EHPA340VMH
3 HYBRID All models 65 10 15~70
4 ELECTRIC All models 70 8 15~70
5 VACATION All models 20 12 15~61
* Shows as 61°C in user interface.
STANDARD Mode:
The user should select this mode for use in commercial applications. In this mode, the water heating is done by the
compression system except when the ambient temperature is below -7°C or above 45°C.
ECO Mode:
This is the default mode as the heat pumps leave the factory. In this mode, the water heating is done by the
compression system except when the ambient temperature is below -7°C or above 45°C.
HYBRID Mode:
In this mode, when the water temperature is below 40°C, water heating is carried out by the compression system
and the heating element simultaneously. When the water temperature is between 40°C and 60°C, the water
heating is carried out by the compression system. When the water is greater than 61°C, water heating is carried
out by the resistive heating element.
ELECTRIC Mode:
In this mode, water heating is done by the resistive heating element.
VACATION Mode:
In this mode, water heating is done by the compression system. This mode is to be used when there is no need
for hot water for an extended period of water.
4. Water temperature setting
Unlock the controller in the main interface then press the “
” or “ ” key to increase or decrease the water
temperature setting value. The value changes by 1°C. It is recommend not to alter factory the default temperature
setting.
OPERATION
Rinnai 24 EHPA Heat Pump OIM - Issue 1
5. Clock setting
In the main interface, press the “ “ key to enter the clock setting interface. The hour part of the clock will ash,
press the “
” or “ ” key to cycle the hour value. When the hour is set, press the“ “ key to conrm. The minute
part of the clock will now ash. Press the “
” or “ ” key to cycle the minute value. After the minute is set, press
the “
“ key to conrm the real-time clock setting and return to the main interface.
In the real-time clock setting interface, if there is no key operation for 10 seconds, the current clock setting value
will be conrmed and will return to the main interface.
If the unit is connected to Internet (WiFi), the real-time clock will automatically update to local time.
6. Operation Timer Setting
It is possible to set three different timers. Press and hold the “
“ key for 3 seconds in the main interface to enter
timer setting.
The timer No.1 symbol will ash, press the “
” or “ ” key to turn on or turn off timer No.1 and the display will
show Off or On accordingly.
When the timer No.1 is turned on, the symbol
will light. Press the “ “ key to set the start time, the symbol ‘1’
will light and the hour section of the timer ashes, press the “
” or “ ” key to cycle the hour value. When the hour
is set, press the “
“ key to conrm. The minute section of the timer will now ash. Press the “ ” or “ ” key to
cycle the minute value. fter the minute is set, press the “
“ key to conrm and begin setting the end time. The
hour section of end time ashes, follow the same procedures to set the end time.
After the timer No. 1 is set, switch to the next timer setting (No.2 and No.3), the setting method is the same as
above. Press the “
“ key to exit and return to the main interface.
If the start time of a certain working period is greater than the end time, the end time is considered to be of the
next day.
When the start time and end time of a setting are the same, it will not be set.
In the timer setting interface, if there is no key operation for 30 seconds, the current timer setting value will be
conrmed and will return to the main interface.
7. WiFi connection Setting
In normal display status, press and hold the ‘Up’ key’ and ‘Down’ key’ (
)for 3 seconds to enter the Wi-Fi
network connection mode. The Wi-Fi icon will ash. When connected successfully, the Wi-Fi symbol will remain lit.
NOTE
Please refer to “Wi-Fi Connection” on page 26 for Wi-Fi Function setup instructions.
8. Disinfection:
Manual Disinfection:
In normal display status, press the “
“ and “ ” keys and hold for 3 seconds to activate manual disinfection
function. All tank water will be heated up to 60°C. The symbol ‘element’ will ash during disinfection.
Auto Disinfection:
If the setting temp < 60°C, the heat pump will start disinfection automatically over a 7-day period. The disinfection
can operate outside of the timer. All tank water will be heated up to 60°C, then it will exit disinfection.
9. Manual Defrosting
When the heat pump (compressor) is running, press the “
“ and “ ” keys and hold for more than 3 seconds to
activate manual defrosting function. The symbol ‘defrost’ will light when defrosting is operating.
OPERATION
Rinnai 25 EHPA Heat Pump OIM - Issue 1
10. Operation Data Query (for use by qualied installation and maintenance personnel)
In normal display status, press and hold the “
“ key for 3 seconds to enter the unit operation data query. Press
the “
” or “ ” key to query each code and value. Press the “ “ key to exit and return to the main interface. See
the following table for data query.
Code Description Unit Note
d01 Ambient temperature °C Measured value
d02 Upper tank temperature °C Measured value
d03 Discharge temperature °C Measured value
d04 Evaporator temperature °C Measured value
d05 Suction temperature °C Measured value
d06 Lower tank temperature °C Measured value
d07 High pressure switch status - 0N=Closed; OFF=Open
d08 Mains voltage V Measured value (reference only)
d09 EEV opening step Real value
d10 Fan speed - Lo=Low speed; Hi=High speed; OFF
d11 Compressor - ON=Running; OFF=Stop
d12 4-way valve status - ON (defrosting); OFF
d13 Defrosting status - ON (defrosting); OFF
d14 Electric element - ON (activated); OFF
d15 PV signal status - ON; OFF
d16 Off-peak tariff status - ON; OFF
d17 Disinfection status - ON; OFF
d18 Mains voltage protection - ON(enabled); OFF(disabled)
d19 One-shot boost - ON(enabled); OFF(disabled)
d20 Compressor working time h *100 as reading
d21 Unit power on time h *100 as reading
d22 Software version -
d23 Product model -
d31 Last fault code -
d32 Second last error code -
d33 Third last error code -
d34 Forth last error code -
d35 Fifth last error code -
d36 Sixth last error code -
d37 Seventh last error code -
d38 Eighth last error code -
d39 Nineth last error code -
d40 Tenth last error code -
.
OPERATIONOPERATIONOPERATION
Rinnai 26 EHPA Heat Pump OIM - Issue 1
WI
-
FI CONNECTION
Please follow below steps to set up and operate Wi-Fi functions.
1. Prepare a Wi-Fi wireless router that can access the Internet, The Wi-Fi frequency band must be 2.4 Ghz and
should be placed within 10 meters of the water heater to ensure that a strong Wi-Fi signal is available.
2. Turn on Wi-Fi and Bluetooth on your device. After the connection is successful, you can turn off Bluetooth
and operation will not be affected.
3. Scan the QR code below or search in the app market to download and install the ‘Smart Life’ App.
•
iOS users – please download from App Store
•
Android users – please download from Google Play
4. After completing the installation, open the App, register an account and log in according to the App prompt.
5. To connect the controller to your network Press and hold the UP and DOWN keys (
)together for 3s, to
enter into manual network connection mode. When the controller is available for connecting to Wi-Fi network,
the symbol “
“ will ash. When connected successfully, the symbol “ “ will remain continously lit up.
NOTE
You will need to repeat step 5 if the icon stops ashing during the connection
6. Connect to the SmartLife App as follows:
1.
2.
i) Search for Device ii) Add Found Device iii) Connect to Wi-Fi iv) Wait to Connect v) Complete
OPERATION
Rinnai 27 EHPA Heat Pump OIM - Issue 1
7. Control the Heat Pump with the App
The main controls for the App are laid out as follows on the App.
Adjust Temp
Setting
Select
Mode
Timer / Check
Operation
Turn
On / O
WI
-
FI
-
TROUBLESHOOTING
Issue Potential Cause
Conguration cannot be completed Check that you are only connected to the 2.4Gz WIFI frequen-
cy. You may be required to temporarily turn off you 5Gz WIFI
frequency at the modem during the conguration process.
Check your WIFI signal strength at the hot water unit. You will
require a minimum of 3 bars WIFI signal to be connected..
Check you have the correct app downloaded. .
Check you have the minimum requirements as stated at the
beginning of this manual.
CONNECTION OF EXTERNAL SIGNALS
WARNING
This type of connection MUST only be carried out by a qualied electrician.
1. Solar photovoltaic system
A solar photovoltaic signal can be integrated via the built-in dry contact input ‘PV’ on the main controller. When
the heat pump receives ‘closed’ signal from the solar PV system and the signal lasts for 30 seconds, the restart
differential will temporarily change to 2°C for at least 10 minutes to take advantage of electricity generated on site
to produce more hot water.
2. Off-peak electricity
Off-peak tariff signal can be integrated via the built-in dry contact input ‘OP’ on the main controller. This feature
shall be congured through dipswitch SW-4 on the main controller. When SW-4 is switched to ON, the heat
pump only operates at receiving ‘closed’ signal. This feature accesses the heat pump to utilize off-peak electricity.
Please note that if timer is activated, the off-peak setting will be overridden by the timer.
NOTE
The unit can not be connected to OFF PEAK meters.
In this case the system will be OFF (No power when connected to this meter) causing, the
disinfection timer to stop counting down.
If the water temperature drops below the required level for an extended period, there is a risk
of legionella developing in the hot water system.
OPERATION
S112519 28 EHPA Heat Pump OIM - Issue 1 - SEPT 2024
CONTACTS
Rinnai Australia Pty Ltd
ABN 74 005 138 769 | AU45204
100 Atlantic Drive, Keysborough, Victoria 3173
P.O. Box 460, Braeside, Victoria 3195
Tel: (03) 9271 6625
National Help Line
Tel: 1300 555 545*
Monday to Friday, 8.00 am to 5.00 pm EST.
After Hours Hot Water Service Line
Tel: 1800 000 340*
*Cost of a local call may be higher from a mobile phone.
(National calls from public phones in Australia are free.)
For further information visit www.rinnai.com.au
or email [email protected]
Rinnai has a Service and Spare Parts network with
personnel who are fully trained and equipped to give
the best service on your Rinnai appliance. If your
appliance requires service, please call our National
Help Line. Rinnai recommends that this appliance be
serviced every 3 years.
With our policy of continuous improvement, we
reserve the right to change, or discontinue at any time,
specifications or designs without notice.
