Rinnai Hydra Heat Hot Water Heat Pump User Guide

HydraHeat™ Hot Water Heat Pump

Operation guide

Important

This hot water system shall be installed in accordance with:
– Manufacturer’s installation instructions

Current:
– AS/NZS 3000 Electrical Standards
– AS/NZS 3500 Plumbing and Drainage Standards
– AS/NZS 5149 Refrigerating Systems Operation
– AS/NZS 5125.1:2014 Heat Pump Water Heaters

Appliance must be installed, commissioned, serviced, and removed by authorised personnel.

Not suitable as a spa or swimming pool heater.
Not suitable for hydronic applications.

Warning
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life.

For more information about buying, using, and servicing of Rinnai appliances call: 0800 RINNAI (0800 746 624).

Rinnai New Zealand Limited
105 Pavilion Drive, Mangere, Auckland
PO Box 53177, Auckland Airport, Auckland 2150

Phone:          (09) 257 3800
Email:           info@rinnai.co.nz
Web:             rinnai.co.nz
youtube.com/rinnainz
facebook.com/rinnainz

For reliable operation the Rinnai HydraHeat™ Hot Water Heat Pump should be serviced every two years. A typical service would include accessing the head unit to clean the evaporator, checking the condition of the compressor, connecting hoses and o-rings, and ensuring there are no water leaks. Regular servicing will help extend the life of the system.

Safety and important messages

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. Children should be supervised to ensure they do not play with the appliance.

• DO NOT modify this appliance
• DO NOT touch power connections
• DO NOT operate the unit unless the head unit is connected to the cylinder
• DO NOT operate the unit unless the cylinder is full of water
• DO NOT operate unless all covers are secured in place
• DO NOT store items on top of or against the unit
• DO NOT install with any other cylinder except the HydraHeat cylinder (ME275685E20H)
• Avoid touching exposed pipework and fittings connected to the unit as they can be HOT

Maintain the necessary clearances around the unit to ensure continued safe operation.

Warning about hot water

Excessively hot water is dangerous. The Rinnai HydraHeat is set to operate in ‘Standard’ mode, heating water to 60 °C, and has a tempering valve to control the temperature of hot water to safe levels.

Always

DANGER BEWARE OF
**SCALDING HAZARDS

**

• Test the water temperature with your elbow before placing your child in the bath, and feel the water yourself before bathing or showering.
• Supervise children whenever they are in the bathroom.
• Make sure the hot water tap is turned off.

Consider
Installing child proof tap covers or child resistant taps, both will prevent a child from being able to turn on a tap.

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.

Hot pipe work
Care should be taken not to touch the pipe work from the cylinder as this could be very hot.

Risk of fire

The unit uses R290 (propane) refrigerant, a class 3 flammable gas according to AS/NZS ISO 817. The refrigerant can only be handled by a refrigeration technician with the appropriate refrigerant handling license.

• If the refrigerant leaks¹, there is a possibility of a fire with an external ignition source
• DO NOT store chemicals or flammable materials near this unit
• DO NOT place the unit near any ignition sources
• DO NOT use a flammable spray such as hair spray, spray paint etc. near this unit as it may cause a fire

¹ The Rinnai HydraHeat has a sealed refrigerant system, leaks will not be common unless the internal components of the head unit have been punctured. If punctured a hissing sound could occur indicating a leak. Contact your installer or Rinnai as soon as possible if this occurs.

Safety devices
Your Rinnai HydraHeat is fitted with a:

• Temperature & Pressure Relief (TPR) valve that ensures the water remains at a safe pressure and temperature.
• Automatic thermostat to maintain water temperature.
• Temperature override cutout for the heating element.

DANGER
The operation of the thermal cutout can indicate a serious situation. Do not reset the thermal cutout until the system has been serviced by a qualified person.

Do not operate the system unless all the safety devices are fitted and are in working order. It is also important that you do not tamper or remove any of these devices.

Element cover
Do not remove the element cover as this will expose 230 V wiring. It must only be removed by an authorised person.

Damaged components
If any component is damaged, it must only be replaced by an authorised person using Rinnai replacement parts.

Hydrogen gas
If hot water is not used for two weeks or more, for example after a holiday, a hot water cylinder with an anode can produce hydrogen gas, which is highly flammable. To remove any potential gas buildup it is recommended a hot tap be turned on for two minutes at a sink, basin, or bath. During this procedure there must be no smoking, open flame, or other appliance operating nearby.

Location and positioning
The HydraHeat is designed primarily for outdoor installation. It may be possible to install the HydraHeat internally if the proposed location is not an occupied space as defined by AS/NZS 5149. Please note that internally installed units will need adequate ventilation as the appliance has a cooling effect on the installed space, operating noise should also be considered. Rinnai strongly recommends discussing the installation with a qualified installer prior to installation.

• DO NOT install the unit in a location that may be exposed to combustible gas leaks. If combustible gas accumulates around the unit, it may cause a fire.
• DO NOT install the unit where noise may be a nuisance, such as near bedrooms or neighbouring properties. Do not place any objects on top of the unit, this could cause excessive vibration and increase noise levels.
• DO NOT install the unit where it will be directly exposed to sea wind and salt spray, this will significantly reduce the durability of the unit.

Draining and filling the system
This normally 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.

Installation by a licensed tradesperson
Only a licensed tradesperson can install, adjust, maintain, and remove this hot water system. Any work carried out by a non-licensed tradesperson is illegal and will void any warranty.

Legionella
To comply with the NZ Building Code requirement¹ for legionella² disinfection, the system incorporates a built-in disinfection cycle. In this cycle, the water in the cylinder is heated above 60 °C for one hour each week. Depending on the mode of operation, this can be achieved using either the electric element, or the heat pump.

1    Clause G12.3.9, Acceptable Solution G12/AS1 6.14.32
2    Legionella is a bacterium that can cause Legionnaires’ disease―a severe form of pneumonia

General information

The heat pump MUST be installed free-standing on a level and stable base capable of withstanding the weight of a full system.

Where property damage can occur as a result of water leakage, the storage cylinder MUST be installed with a safe tray (overflow tray) and drain in accordance with AS/NZS 3500.4.

Unit orientation
The heat pump is designed for open air operation, requiring sufficient air supply to maintain operating efficiency. The air inlet and outlet of the heat pump must be positioned away from prevailing winds, and be provided with sufficient clearances as shown in the installation guide.

Genuine Rinnai parts
Only use the included accessories, and specified parts for installation. Using nonstandard parts can cause water leaks, electrical shock, fire, and cause the unit to fail.

Defrost function and freeze protection
The HydraHeat has a defrost function that operates automatically, as long as the appliance is connected to the power supply, to remove ice from the evaporator when the outside air temperature is between -10 and 5 °C.

The HydraHeat also activates freeze protection when temperature sensors detect < 1 °C to stop the pipes from freezing. This activates the pump to circulate hot water, the pump stops once the sensors detect temperatures above 3 °C.

If you live in an area prone to frost and will be away for an extended period with the power supply disconnected, Rinnai recommend draining your system, by an authorised tradesperson, to prevent frost damage. Frost damage which is not covered by warranty.

Snow zone locations
If the location is prone to snow the system must be in a covered location. The system will not operate if snow is allowed to build up on top of the appliance.

Disposal guidelines
The head unit of this system contains refrigerant and other potentially hazardous materials. Do not dispose of this system as household waste. Contact Rinnai for more information.

Electrical connection
The heat pump is not fitted with a power cord and plug, it MUST have the supply terminals connected to an independent, fused AC 230 V 50 Hz power supply with an isolating switch installed at the switch board.

All electrical work and permanent wiring must be carried out by a qualified person in accordance with AS/NZS 3000 Wiring Rules.

Note about water / water blasting
The HydraHeat system has an IPX4 rating which means it’s protected against splashing water, for example rain. It is not protected from sustained low or high pressure water, for example water blasting.

Power supply disruption
If the power goes off the system will retain all of its settings, including the day and time. When power is restored the system will come back on as normal in the operation mode that was previously set.

Condensation
During normal operation condensation occurs in the heat pump as air across the evaporator is cooled. In high humidity locations a large volume of condensate can be generated. The installer will ensure condensate is plumbed to a suitable drain.

About your HydraHeat hot water heat pump

Designed and made in New Zealand

Congratulations on the purchase of your Rinnai HydraHeat hot water heat pump system. We hope you love this product as much as we do, and on the off chance that something does go wrong, or if you need help, we’re only a phone call away.

1. Designed in NZ for NZ conditions
   Designed to operate efficiently in climates with a wide temperature range of -10 °C to 42 °C.

2. Innovative modular system
   The removable head unit sets it apart from other hot water heat pumps, as it guarantees a consistent supply of hot water during servicing, providing ease of servicing and peace of mind.

3. Low operating noise
   An ideal choice for built-up residential areas due to its low operating sound level of 45 dB(A), making it one of the quietest options available.

4. NZ MEPS
   The HydraHeat cylinder stands out as the sole product in NZ that meets the rigorous requirements of NZ MEPS (Minimum Energy Performance Standards).

5. HydraHeat standalone cylinder
   Offers the option for standalone operation as a hot water cylinder, thanks to its ‘heat pump ready’ design, which allows for the addition of the head heat pump unit at a later time. This exclusive feature provides unmatched purchase and installation flexibility.

6. Easy to use controls
   A user-friendly control interface ensuring convenience and ease of use.

Energy efficient performance
HydraHeat boasts an impressive coefficient of performance (COP) of 4.7, resulting in highly efficient water heating that minimises energy consumption and lowers operating costs.

How it works

The operation of a hot water heat pump is similar to a refrigerator, but in reverse. A heat pump operates by transferring heat from the ambient outside air into the water. Electricity is used to operate the system, but not to directly heat the water. Because of this, energy consumption is significantly reduced when compared to an electric element hot water system.

The warmer the climate in which the heat pump is installed, the more efficient the heat pump system will be at heating water.

The heat pump unit includes a circulation pump which draws water from the bottom of the storage cylinder and returns it at a higher temperature. Temperature sensors in the top and bottom of the cylinder are used to control the heat pump operation to achieve suitable cylinder temperatures.

1. 1 kW
   power INPUT

2. **4.7 kW*
   HEATING WATER ENERGY**

• At 19 °C ambient temperature. Water heated from 19-55 °C

Heat pump unit
The top unit is the powerhouse using heat pump technology that extracts thermal energy from ambient air.

275 L cylinder
The cylinder can operate on electricity or in heat pump mode so you have the freedom to choose the best heating option.

There are seven indicators on the control panel which display the current operational mode / status of the heat pump. These are:

Element only, factory preset temperature of 70 °C, with a range of 65-75 °C.

Operation modes

Standard (default setting)
The system comes factory preset to operate in ‘Standard’ mode. This means the system continually heats the water to a minimum of 60 °C by the heat pump without the need to activate the element in the tank.

Boost (one time boost)
The heat pump and the tank element heat the water to 70 °C, in a one-off boost so as to heat the water as quickly as possible. Once heating has been completed the system reverts back to the previous mode that was selected.

Eco 50 / Eco 55
Cost saving mode. This means the system continually heats the water to 50 / 55 °C by the heat pump without the need to activate the element in the tank.

High usage
The heat pump and the element in the tank heat the water to 70 °C. This differs to ‘Boost’ as the system is continually heating the water (not just a one off boost).

This mode would typically be used if there are extra people in the house all using hot water at a similar time each day.

Element only
Water in the cylinder is heated only by the electric element, the heat pump does not run. This mode would only be used if there was a fault with the head (heat pump) module¹, or if the homeowner wanted the heat pump not to activate at night due to noise (timer to be set). It will still allow the homeowner to have hot water.

Shutdown
The entire system is off and in standby. This mode would be used if the homeowner is away on holiday, or wanted the heat pump not to activate at night due to noise. If switched to SHUTDOWN (standby) bear in mind the cylinder will take time, approximately 4-8 hours depending on the ambient air temperature, to heat back up again.

Summary table

We do not recommend switching the system off (without power connected) in areas where frost could occur or in the middle of winter. Damage to the system if not continually connected to the electricity supply is not covered by warranty.

¹ If there is a fault an error code will appear on the display and the unit will beep once every 15 seconds. Refer p.13 for more information.
² Under extremely low ambient air conditions, the element may be briefly used to complete the legionella disinfection heating cycle.
³ Element will be used for the legionella disinfection cycle.

Controller interface

The HydraHeat controller uses a capacitive touchscreen which requires minimal pressure to navigate through the menu. When a button is pressed there will be an audible beep. Be aware that holding fingers close and near to the screen, or pressing too hard, may result in the screen jumping through options.

Home screen and navigation
To access the home screen press OK for approximately 3-5 seconds. The slight delay is to confirm that it isn’t a fake signal, for example heavy rain. The screen will show the current operating mode, which is set to ‘Standard’ by default.

The display will automatically turn off after 30 seconds, but can be reactivated again by pressing any of the buttons.

Down button – scrolls through the different menu options
OK button – selects the option
Back button – returns to the previous screen

Operation modes
Press the down button to cycle through the screens to select the mode of operation required. Select OK to confirm. Once the mode is selected, the screen will display the modes in the order shown below. The operation modes are spread over two screens.

Day and time

This only needs to be done if the factory set date and time settings are lost, for example if a ‘Factory reset’ has been done. The clock is a 24-hour clock.

Once in ‘Set Day / Time’ press and hold the down button to scroll through the day, hour, and minutes to edit, press OK to confirm selection at each stage.

Set and forget timer

The timer can be used to lock out the system so it does not operate. Once set it will continue to operate at the programmed times until ‘Timer Reset’ is selected.

Scenario: Dave wants to reduce the operating noise of the system at night as it’s located near a neighbouring boundary where bedrooms are located. He sets the system to go off from 10pm to 6am.

How to set

1. Select ‘SET TIMER’, and press OK.
2. Press and hold the down button to scroll through the hours / minutes you want to edit, and press OK.
3. Once the time is set, select the mode of operation by using the down button, press OK to confirm.

Reset timer

1. Select ‘SET TIMER’, and press OK.
2. Use the down button to select ‘RESET TIMER’, and press OK.
3. Confirm ‘YES’, and press OK.

Factory reset

A factory reset clears the date and time plus any timers that were set. The only thing it does retain is the default ‘STANDARD’ mode setting. If a factory reset is done the date and time will need to be set otherwise the timer functionality will not work.

Maintenance and servicing

For reliable operation the Rinnai HydraHeat should be serviced every two years. A typical service would include accessing the head unit to clean the evaporator, checking the condition of the compressor, connecting hoses and o-rings, and ensuring there are no water leaks. In addition to this we also recommend the following.

Anode may need replacing.
Every 24 months after year five| Inspection and service of the entire system, including element¹
¹ In hard water areas the element must be periodically descaled. To do this the cylinder must be drained and the element removed

TPR valve
This valve is located near the top of the cylinder. It is essential for safe operation. The TPR valve works by automatically venting hot water if the temperature or pressure of the water in the cylinder gets too high.

Every six months operate the easing gear to remove lime deposits and to check that it is not blocked. Easing the lever discharges hot water, ensure no one is near the drain line.

DANGER
Failure to operate the WARNING relief valve easing gear at least once every six months may result in the water heater exploding.

Continuous leakage of water from the valve may indicate a problem. It is important that you raise and lower the easing gear GENTLY.

During the operation, if the valve does not discharge water when the easing gear is lifted, or does not seal again when closed arrange for an authorised person to come and inspect the system immediately.

During servicing of your cylinder the TPR valve IMPORTANT needs to be checked and/or replaced. This needs to be done by an authorised person at intervals not exceeding five years, or more frequently in areas where the water is classified as hard.

A TPR valve must not be replaced with one that has a higher pressure rating than that specified for the cylinder.

Anodes in enamel tanks
Storage tanks manufactured from enamel can be susceptible to corrosion. The combined effects of water pressure, temperature and water chemistry can create an aggressive environment for corrosion of some materials. For this reason anodes are placed in enamel tanks so as to corrode first. Anodes should be changed every five years, or more frequently in hard or aggressive water areas.

Clearing debris and pooling water
Ensure that water does not pool around the cylinder base, and that debris around the base is regularly cleared and does not build up.

Regular visual inspection
Regularly check your system to ensure there is no buildup around or on top of the unit, and that there are no water leaks. The exterior needs to be kept clean.

Maintenance and servicing
Rinnai has a maintenance, service and spare parts network, with personnel who are fully trained and equipped to give the best advice on your Rinnai product. Regular maintenance and servicing is not covered by the Rinnai warranty.

For help locating a service person in your area call 0800 RINNAI (0800 746 624).

TPR position – top of cylinder

How to operate the easing gear

1. GENTLY lift until water flows from the drain line, lower GENTLY to release
2. To drain line
3. To water heater

Error codes

When the system encounters an error, the error code will display on the screen, for example S1, and the unit will beep once every 15 seconds. Take a note of the error code and contact Rinnai or your installer. They may advise you to switch to ‘Element Only’ mode to ensure a continued supply of hot water until someone is able to come and check the unit.

Element only, means water in the cylinder is heated only by the electric element, like a traditional storage cylinder. If this isn’t addressed quickly it may result in a larger than normal power bill.

Fault code

| Event / fault description| Action
---|---|---

–

| No hot water| Check if there is power to the cylinder. Check that the circuit breaker in the distribution board is on. Check ripple control is on.

–

| Display not visible| Timeout may have occurred, press the OK button. If this doesn’t work the screen may be ‘locked’ in the operation mode, press and hold the OK button for 3-5 seconds.

00

| No active fault| Contact Rinnai.

S1

| Ambient sensor fault| Contact Rinnai.

S2

| Water inlet sensor fault| Contact Rinnai.

S3

| Water outlet sensor fault| Contact Rinnai.

S4

| Compressor discharge sensor fault| Contact Rinnai.

S5

| Condenser sensor fault| Contact Rinnai.

S6

| Suction sensor fault| Contact Rinnai.

S7

| Evaporator (pressure) sensor fault| Contact Rinnai.

S8

| Lower tank temperature sensor fault| Contact Rinnai.

S9

| Upper tank temperature sensor fault| Contact Rinnai.

T1

| Condenser over temperature| Contact Rinnai.

T2

| Evaporator under temperature| Contact Rinnai.

T3

| Low super heat fault| Contact Rinnai.

T4

| Low water temperature fault| Contact Rinnai.

T6

| Discharge over temperature| Contact Rinnai.

F1

| Fan not rotating| Contact Rinnai.

F2

| Fan over speed| Contact Rinnai.

P1

| Pump is not rotating| Contact Rinnai.

P2

| Pump over speed| Contact Rinnai.

C1

| Compressor not running| Contact Rinnai.

E1

| Electric heater is not running| Contact Rinnai.

Troubleshooting

Do not attempt to carry out any work other than that mentioned in this troubleshooting section. If you have any other faults or problems, please contact your installer, or contact Rinnai.

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: The compressor will not start up for five minutes after the power is turned on.
Excessive hot water consumption| Often people are surprised at the amount of hot water used, especially when showering. If the amount of hot water used during the day exceeds the storage capacity of the cylinder, it is likely there will be insufficient hot water.
Temperature & Pressure Relief (TPR) valve continually discharging water| 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 dribbles continuously, try easing the valve gear for a few seconds as described on p.12. This may dislodge any foreign matter and alleviate the problem.

If the valve discharges at high flows, especially at night, it may be as a result of the water pressure exceeding the design pressure of the system. Contact your installer about fitting a Pressure Limiting Valve (PLV).

Expansion Control Valve (ECV) continually discharging water| 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 dribbles continuously, try easing the valve gear for a few seconds. This may dislodge any foreign matter and alleviate the problem. If this does not solve the problem contact your installer or 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 -10 °C. The heating element will operate if water heating is required, but may take longer to heat the water.
NO WATER FROM THE TAP
Restriction in the hot tap or failure of the cold water supply to the water heater| Check for water flow at the other taps and that the cold water isolation valve is fully open.
HIGH ELECTRICITY BILLS
Excessive hot water consumption| Refer ‘Insufficient or no hot water’.
High electricity tariffs| The electricity tariff will determine the running costs of the system. Refer to your latest bill or contact your electricity provider to confirm what plan you are on and what you are paying.
Higher cylinder element usage| In extremely cold conditions the cylinder element may be operating more than normal.
WATER FLOW FLUCTUATIONS
One or more 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 flow.

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.

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 ICING UP
Defrosting function| The heat pump has an inbuilt defrosting function which may operate and remove any ice.
HEAT PUMP ERROR INDICATOR
LED indicator is flashing on the display| This will flash if an error is detected with the heat pump, refer error code table and then contact Rinnai for assistance.
WATER LEAK FROM TOP OF CYLINDER
Possible heat exchanger fault| Turn the unit off and contact your installer or Rinnai for assistance.
ERROR CODE AFTER A POWER DISRUPTION
Error code appearing after a power disruption| If there is a power cut while the unit is running an error code may appear on the display. If this occurs try powering off the system, wait for approximately ten seconds, then turn on again. If the error code reappears contact Rinnai for assistance.
TIMERS NOT WORKING
Date and time not showing| Peform a factory reset. If this does not fix the problem then the coin cell battery in the PCB may be flat. Contact Rinnai for assistance as replacing the battery requires an authorised person.

The PCB battery has an expected life of approximately ten years.

Limited Warranty – HydraHeat

Rinnai HydraHeat warranty summary

| HydraHeat head unit| HydraHeat cylinder| All other parts¹
---|---|---|---
Product| Residential – 5 years
Commercial – 1 year| Residential – 7 years
Commercial – 3 years| Residential – 5 years
Commercial – 3 years
Labour| 1 year| 1 year| 1 year

All terms of the warranty are effective from the first date of installation. Proof of installation will be required. Where the date of installation is not known or cannot be proven, the warranty will be based on the date of manufacture. Any warranty claim must be made within a reasonable time of discovery of the potential fault or defect.

¹ All other parts include, but are not limited to; sensors, thermostats, valves, electric heating elements, anodes.

General warranty terms

Rinnai reserves the right to make modifications and change specifications and its parts without notice.

For the purposes of the Consumer Guarantees Act 1993, Rinnai only guarantees the availability of repair facilities and spare parts for the express warranty periods recorded in the Rinnai warranty summary table.

If the Rinnai HydraHeat is being acquired for personal, domestic or household use*, this warranty does not limit any consumer rights or guarantees that may apply under the Consumer Guarantees Act 1993. If the product is being acquired for the purposes of a business, the provisions of the Consumer Guarantees Act 1993 do not apply and no other warranties (either express or implied by law), apart from those stated in this warranty, apply.

*A residential application is defined as an installation where the water heater, with the thermostat set at 70 °C and below, delivers hot water to a single family dwelling, not used for commercial purposes. Examples where a residential dwelling is used for commercial purposes: hair salon, catering kitchen, communal care facility etc. These installations would be considered commercial applications. An exception would be an accommodation business such as a motel, where the water heater serves the equivalent of a single family dwelling, this would be a residential application.

Warranty terms and conditions

• All terms of this warranty are effective from the date of first installation. The attending service person reserves the right to verify this date.

• All Rinnai appliances must be installed, commissioned, serviced, repaired and removed in accordance with the manufacturer’s instructions, local regulations, and municipal building codes by persons authorised by local regulations to do so.

• All appliances must be operated and maintained in accordance with the manufacturer’s operating instructions.

• This warranty applies only to the components supplied by Rinnai. It does not apply to components supplied by others, such as, isolating valves, electrical switches, pipe work, electrical cables, fuses, but not limited to these.

• Where the appliance has not been sited in accordance with the installation instructions or installed such that normal service access is difficult, a service charge will apply. If at the discretion of the attending service person the installation is deemed illegal or access is dangerous, service will be refused. Any work required to gain access to the appliance will be chargeable by the attending service person (for example, removal of walls, or the use of special equipment to move components, but not limited to these).

• Where a failed component is replaced under warranty, the balance of the original appliance warranty will remain effective. The replacement part or appliance does not carry a new warranty.

• Rinnai reserve the right to transfer functional components from defective appliances if they are suitable.

• Rinnai reserve the right to have installed product returned to the factory for inspection.
  – The decision of whether to repair or replace a faulty component of the heat pump unit is at the sole discretion of Rinnai.
  – Where Rinnai determines that the heat pump unit needs to be removed for repair, Rinnai may undertake such removal and may permanently replace the defective heat pump unit with a substitute unit that is in the reasonable opinion of Rinnai, in a better or equal condition to the repaired unit.

• Where the heat pump is installed outside the metropolitan area or further than 40 km from a Rinnai authorised service centre, travel costs shall be the owner’s responsibility.

Warranty exclusions

The following exclusions may cause the warranty to become void and will result in a service charge and costs of parts (if required).

• Accidental damage, defects or failure caused by acts of nature (fire, wind, lightning, flood, storm, hail storm fallout), vandalism, earthquake, war, civil unrest, pests, animals, insects, or entry of foreign objects or matter into the product such as dirt, debris or moisture.
• Defects or failure due to environmental damage such as corrosion.
• Failure due to abuse or misuse, improper maintenance or improper storage.
• Failure due to incorrect or unauthorised installations.
• Failure or damage caused by alterations, service or repair work carried out by persons other than a Rinnai service person or service centre.
• Where the heat pump or cylinder has failed directly or indirectly as a result of poor water quality outside the limits specified (refer next page).
• Where it is found that there is no fault with the appliance and the issue is related to the installation or is due to power failure.
• Subject to any statutory provisions to the contrary, Rinnai does not accept:
  – Liability for consequential damage or any incidental expenses resulting from any breach of the warranty.
  – Claims for damage to buildings or any other consequential loss either directly or indirectly due to leaks from the heat pump or any other faults.

Water quality

Water chemistry has a direct impact on hot water heaters, affecting corrosion protection measures, or causing scale buildup.

Water quality MUST:

1. Meet the Water Services (Drinking Water Standards for New Zealand) Regulations 2022 and the Aesthetic Values for Drinking Water Notice 2022, or the water standards as statutorily defined at the time; AND
2. Be within the limits shown in the table below.

Water quality outside these limits will void this warranty.

Water quality and impurity limits

¹ Langelier Saturation index—scaling potential of water.

Water quality warranty guidelines

Filtration
Where there is discolouration, debris, or silt present in the water, an inline filter must be fitted into the water supply to protect the copper in the HydraHeat head unit from corrosion. Particulates and deposits in hot water systems are corrosive to copper and stainless steel and can lead to premature pitting. The filters must be periodically replaced to maintain the integrity of the system.

Stagnation
Leaving water stagnant in the system will promote corrosion. It is recommended that systems, if not in use, are flushed on an eight week cycle.

Bore and tank water
Bore and tank water supplies should be considered to be corrosive and should be tested prior to using the system. Bore and tank water must meet the water quality parameters stated in the above table.

Purchase details

Record your purchase details below

ATTACH YOUR PROOF OF
PURCHASE HERE:

Retailer:

Retailer address:

Date of purchase:

Product details:

Please keep these details in a safe place for future reference.

Register your system online:
www.rinnai.co.nz/register/
for service reminders, product updates, and special offers. You can unsubscribe at any time.

Installer details

Company name:

Installer name:

Address:

Phone:                                      Mobile:

Signed:                                      Date:

Rinnai.co.nz

Tel: 0800 746 624
http://www.youtube.com/rinnainz
http://facebook.com/rinnainz
Rinnai HydraHeat operation guide 31115-D 4:24

References

• Rinnai NZ - Home Heating - Water Heating - Heat Pumps
• Rinnai NZ Product Registration

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