Rinnai AS1 Mains Pressure Indoor Enamel Cylinders Installation Guide

Rinnai AS1 Mains Pressure Indoor Enamel Cylinders

Specifications

• Product Name: Mains Pressure Indoor Enamel Cylinders
• Manufacturer: Rinnai New Zealand Limited
• Address: 105 Pavilion Drive, Mangere, Auckland, PO Box 53177, Auckland Airport, Auckland 2150
• Contact: (09) 257-3800 | Email: info@rinnai.co.nz

Product Information

The Mains Pressure Indoor Enamel Cylinders from Rinnai are designed for indoor use and provide hot water to your household. It is important to follow the installation instructions provided by the manufacturer and adhere to relevant regulations for safe operation.

About Your Cylinder
All cylinders have the potential to leak water. Ensure installation includes a drip tray to minimize damage. Refer to warranty terms and conditions for more details.

Safety Messages

• Safety Devices: Your cylinder is equipped with safety devices. Do not reset the thermal cutout without professional service.
• Element Cover: Do not remove the element cover; contact an authorized person for any maintenance.
• Thermostat Setting: Adjust only by an electrician or qualified tradesperson.
• Child Supervision: Children should not play with any part of the hot water system.
• Hot Pipe Work: Be cautious of hot pipe work from the cylinder.
• Hydrogen Gas: To dissipate accumulated hydrogen gas safely, run a hot tap for two minutes without any nearby open flames or smoking.

Product Usage Instructions

Installation
Only licensed tradespersons should install, adjust, maintain, service, or remove the water heater. Any unauthorized work will void the warranty.

Maintenance and Servicing
Regular maintenance is essential for optimal performance. Ensure safety devices are functioning properly and do not attempt to tamper with them. Contact authorized personnel for any repairs or replacements.

Troubleshooting
If you encounter any issues with your cylinder, refer to the troubleshooting section in the manual or contact Rinnai for assistance.

FAQ

• Q: Can I adjust the thermostat setting myself?
  A: No, the thermostat setting should only be adjusted by an electrician or qualified tradesperson.

• Q: How do I dissipate accumulated hydrogen gas safely?
  A: Run a hot tap for two minutes without any nearby open flames or smoking.

Important

• Cylinders shall be installed in accordance with:
  • Manufacturer’s installation instructions
  • Current AS/NZS 3000, AS/NZS 3500, and G12/AS1
• Must be installed, commissioned, serviced, repaired, and removed by authorised personnel.
• Not suitable as a spa or swimming pool heater.
• Owner, please retain this guide for future reference
• Installer, please leave this guide with the owner

Warning
Improper installation, adjustment, alteration, service and maintenance can cause property damage, personal injury or loss of life.
This appliance is not to be used 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.
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, AucklandPO 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

Please note
Only a licensed tradesperson can install, adjust, maintain, service, and remove this water heater. Any work carried out by a non-licensed tradesperson is illegal and will void any warranty.

About your cylinder

Water is heated by an electric element, or elements located in the cylinder. The temperature of the water is controlled by an automatic thermostat that is set by your installer, usually to 65 °C.

Important
All cylinders have the potential to leak water. To minimise damage to other areas of your home, ensure that your cylinder has been installed with a drip tray—the person doing the installation is responsible for this.
Refer to the warranty terms and conditions in this guide for more information.

Safety messages

Safety devices
Your cylinder is fitted with a:

• Temperature & Pressure and Relief (TPR) valve, designed to automatically release water in the event that temperature or pressure exceeds safe levels.

• Automatic thermostat to maintain water temperature.

• Temperature override cutout for heating element.

• DANGER
  The operation of the thermal cutout can indicate a dangerous situation. Do not reset the thermal cutout until the water heater 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.

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

2. Thermostat setting
   Must only be adjusted by an electrician or other suitably qualified tradesperson.

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

4. Child supervision
   Children should be supervised to ensure they do not play with any part of the hot water system.

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

6. Hydrogen gas
   If hot water is not used for two weeks or more, a quantity of hydrogen gas, which is highly flammable, may accumulate in the cylinder. To dissipate safely, it is recommended a hot tap (non-electrical) be turned on for two minutes at a sink, basin or bath. During this procedure there must be no smoking, open flame, or any other appliance operating nearby.

7. Cylinder thermostat setting
   To meet the New Zealand Building Code requirement1 to disinfect water for legionella bacteria2, the thermostat has been set to 65 °C.

8. Turning the cylinder on/off
   If you plan to be away for a few nights we suggest you leave the system switched on. If it is necessary to switch it off, when switching back on, remember that the cylinder will take time to heat back up again.

9. Draining / filling the cylinder
   This normally occurs during installation or servicing and must be carried out by an authorised person.

Maintenance and servicing

Hot water systems require regular maintenance and servicing. To ensure longevity of your cylinder we recommend the following.

TPR valve
This valve is located near the top of the cylinder and 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. As this will discharge hot water, ensure no one is near the drain line.

DANGER

• Failure to operate the 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 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

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).

element*
Every 24 months after

year five

| Inspection and service the entire hot water system, including element*

• In hard water areas the element(s) must be periodically descaled. To do this the cylinder must be drained and the element(s) removed

Anodes in enamel tanks
Storage tanks manufactured from metal 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

1. Insulated TPR on the top of a cylinder. The lever arm (easing gear) will be in the down position. TPR will be connected to a drain line (not shown in this photo).
2. Operate the easing gear by gently lifting until water flows from the drain line, lower gently.

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

cylinder?

Check that the isolating switch marked ‘hot water’ or ‘water heater’, at the meter box, is switched on. Also check any isolating switches near the water heater are switched on.

Check the fuse or circuit breaker marked ‘hot water’ or ‘water heater’ at the meter box. Repeated failure of the fuse or tripping of the circuit breaker

indicates a fault, which must be investigated by an authorised tradesperson.

Most hot water cylinders are controlled at peak times by your electricity supplier via a ripple relay. Contact your electricity supplier to determine if there have been any issues with the power supply.

Lack of hot water or no hot water| Are you using more hot water than you think?

Often you don’t realise how much water is actually being used. This applies especially when showering. Typical flow rates for showers is approximately 8-10 litres per minute. Conduct a simple experiment by placing a measured bucket under your shower for ten seconds and multiply by six to determine the amount of water produced over a minute. If your result is significantly

more than the rates mentioned you may want to consider installing a low flow shower rose―available at all good plumbing stores.

Lack of hot water or no hot water| Cold water relief valve discharging continuously?

It is normal for the cold water relief valve to discharge a small quantity of water through the drain line. If water is discharging continuously there may be a fault with one of the valves, contact the installer to discuss.

Water is too hot| If possible check the temperature of the water coming out of a hot water tap with a thermometer. If it is higher than 55 °C then this indicates a problem with your system—contact an electrician for advice.
High electricity bills| If you think your electricity bill is too high, investigate the following:

•       Has your electricity tariff changed?

•       Is your cold water relief valve discharging continuously?

•       Are you using more hot water than normal?

•       Has there been any leaking hot water pipes, or taps?

Installation

Installation, servicing, repair, and removal shall be carried out only by authorised personnel.

Specification summary

Suitability

• Indoor mains and low-pressure systems
• Residential applications only
• Left or right-hand cold inlet connections (250 and 300 L)
• Not suitable as a pool or spa heater.
• The system should be located and arranged to achieve the closest proximity to water draw-off points

1. Construction Inner cylinder: High-quality glass lined (vitreous enamel) Outer casing: Galvanised steel
2. Connections Hot and cold water connections ¾ ” (20 mm)
3. Thermal insulation CFC-free polyurethane foam, compliant with MEPS standard
4. Maximum working pressure 850 kPa
5. Element Incoloy 825 alloy sheath curved element positioned at the bottom of the cylinder, and midway if a dual element is purchased.
6. The thermostat Setting range 60-70 °C. Maximum thermostat setting, to maintain the warranty, is 70 70 °C Robert Shaw 30 A contact thermostat, manually resettable at 85 °C (black dial).
7. Protection against water IPX1
8. Pressure limiting valve This water heater MUST be installed with a 500 kPa or less pressure limiting (reducing) valve and appropriate cold water expansion valve.
9. TPR valve A temperature and pressure relief valve (850 kPa, 90 °C) is supplied with the water heater and MUST be fitted. A TPR insulation kit, to reduce heat loss, is also supplied—this needs to be fitted.

Dimensions

30 L and 50 L

Tank size| Diameter| Height| B| C| D| F| Recovery times (theoretical) 1
---|---|---|---|---|---|---|---
30 L| Ø400 mm| 540 mm| 150 mm| 235 mm| 365 mm| 115 mm| 1.5 kW: 1 hr 10 mins

3.0 kW: 35 mins

50 L| Ø488 mm| 615 mm| 200 mm| 235 mm| 403 mm| 135 mm| 1.5 kW: 1 hr 56 mins

3.0 kW: 58 mins

Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.|  |

135 / 180 L (squat), 250 / 300 L

Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.

Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.

Plumbing setup

Cylinders should be installed in accordance with G12/AS1 or G12/VM1 (AS/NZS 3500.4). Please allow sufficient room for access to covers and valves.
Fitting a dedicated cylinder drain, separate from any other valve, is highly recommended to enable servicing of the water heater to be undertaken.
For an appliance intended to be permanently connected to the water mains and not connected by a hose set.

Plumbing setup for a mains pressure cylinder

Base requirements
Cylinders should be installed on a flat level base of sufficient strength to support the weight of the water heater when full.

Seismic restraint
The water heater must be suitably restrained against seismic activity, ‘G12/AS1 Figure 14’ details an acceptable method of restraint.

Drip tray/catch pan (MUST be fitted)
The Rinnai warranty does not cover any consequential loss from leaks to the cylinder, so a suitably drained drip tray/catch pan must be fitted as per AS/NZS 3500.4 5.4 and G12/AS1 6.11.3.

Pipe work

• It is the installer’s responsibility to adequately size the distribution pipework in a property to ensure sufficient performance from all outlet fittings. Water pipe sizing should be performed in accordance with AS/NZS 3500.4 and/or G12/AS1. Pipe sizing and valve selection must be performed to allow for the water supply pressure.
• A drain-off tap or line must be fitted to the inlet of the water heater.
• All hot water pipework should be insulated with polythene foam or equivalent insulation to optimize performance and energy efficiency.
• DO NOT drill anything into the water heater, this could damage critical components and cause corrosion.

Pressure reducing valve
If the water supply pressure exceeds the rated pressure, a pressure-reducing valve is to be fitted in the installation.

TPR valve

• A TPR is supplied with the water heater and MUST be fitted. Use spanner flats on the valve body to tighten, DO NOT use a wrench on the valve body.
• The TPR valve must be fitted with a drain pipe to direct any water discharged to a visible point outside the property. The drain pipe must have a continuous fall and be at least the same size as the TPR valve outlet. It must also be protected from freezing conditions.
• Where the drain pipe exceeds three meters in length it is recommended an air break be provided within 300 mm of the TPR valve outlet. Where an air break is used it is recommended that the pipe size after the air break be increased to one size larger than the TPR valve.

Storage and delivery temperatures

Storage temperature
To meet the New Zealand Building Code requirement1 to disinfect water for legionella bacteria, the cylinder thermostat has been preset to 65 °C.

WARNING

• The access cover to the element and the thermostat must only be removed by an electrician or other suitable qualified tradesperson.
• Thermostat settings must only be adjusted by an electrician or other suitably qualified tradesperson.

Hot water temperatures
NZBC G12.3.6 states that “Where hot water is provided to sanitary fixtures and sanitary appliances, used for personal hygiene, it must be delivered at a temperature that avoids the likelihood of scalding.”
In order to prevent scalding the delivered hot water temperature at any sanitary fixture used for personal hygiene must meet:

• G12/AS1 6.14.1 a)
• G12/AS1 6.14.1 b)

Sanitary fixtures used for personal hygiene includes showers, baths, hand basins and bidets.
In kitchens and laundries, heated water must be delivered to fixtures and appliances at flow rates and temperatures which are adequate for the correct functioning of those fixtures and appliances. The temperature required may be greater than 55°C.
To comply with these requirements, a temperature-limiting device, such as a tempering or thermostatic mixing valve will be required on standard residential installations

Electrical supply and connections

The electrical connection must be carried out by a qualified person in accordance with NZ Electrical Regulations. The water heater must have the heating element connected to an independent, fused, AC 230 V 50 Hz power supply with an isolating switch installed at the switch board. Disconnect all power prior to installation and commissioning.

• The water heater must be filled with water prior to connection to the power supply
• Household wiring to the heater must be capable of withstanding the appliance load
• Fixed wiring must be protected from contact with the internal hot surface of the water heater

Electrical access is via a hole in the element cover for mounting with an approved electrical conduit gland. For entry to the element cover remove the two fixing screws.
Connect all LIVE, NEUTRAL and EARTH wires in accordance with the wiring diagram. Inspect and ensure all wiring links are secure prior to fixing the access cover and turning the power on.
To ensure the over-temperature and energy cutout is set press the ‘reset’ button on the thermostat.
The appliance is intended to be connected to cables of fixed wiring which has a cross-sectional area of 1.5 mm2 – 2.5 mm2.
Once the cylinder is full of water perform an Earth Continuity Test, as outlined in Annex A of AS/NZS 60335.1.

Valves and fittings

Valves with pressure ratings other than those listed in this manual must not be used.

Fittings supplied with the cylinder
TPR valve, brass plugs, to plug unused connections, and the owner and installer guide are packaged inside the element cover.
The TPR valve insulation kit and instructions are supplied in a clear plastic bag fixed to the element cover as shown. The valve insulation kit is provided to reduce heat loss from the TPR and must be fitted.

Commissioning

Commissioning and draining activities must be carried out by an authorised person.

To fill and turn on the water heater

• Open all hot water taps in the house including the shower.
• Open the cold water isolation valve to the water heater. Air will now be forced out of the taps.
• Close each tap when the water runs freely without air bubbles.
• Check all plumbing connections and pipe work for water leaks.
• Switch on the electric power supply.

To turn off the water heater
It may be necessary to turn off a water heater after installation and commissioning, for example during building activities or if the premises are vacant.

Switch off the electricity supply at the isolating switch to the water heater.
Close the cold water isolation valve at the inlet to the water heater.

To drain the water heater

• Turn off the water heater as above.
• Close all the hot water taps.
• Gently operate the TPR valve release, this will relieve the pressure in the water heater.
• Open the drain valve—make sure no damage will occur from discharged water.
• Operate the TPR valve again. This allows air into the water heater and will result in the water draining.

Limited Warranty

Rinnai brings you peace of mind with a:

7-year warranty
This warranty applies to all Rinnai mains pressure enamel indoor cylinders (including Smart enamel cylinders).
All terms of the warranty are effective from the first date of installation. Proof of installation date 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—refer to the data label on the cylinder. Any warranty claim must be made within a reasonable time of discovery of the potential fault or defect.

Cylinder only

|  | 7 years
Labour| 5 years

Components1 supplied by Rinnai

| Parts| 1 year
Labour| 1 year

Components include, but are not limited to; sensors, thermostats, valves, electric heating elements

General warranty terms

• Rinnai reserves the right to make modifications and change specifications and its parts without notice.
• For 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 cylinder 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 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: a 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 by the manufacturer’s instructions, local regulations, and municipal building codes by persons authorized by local regulations to do so.
• All appliances must be operated and maintained by 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, pipework, electrical cables, fuses, but not limited to these.
• Where the appliance has not been sited by 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 the installed product returned to the factory for inspection.
  • The decision of whether to repair or replace a faulty component of the cylinder is at the sole discretion of Rinnai.
  • Where Rinnai determines that the cylinder needs to be removed for repair, Rinnai may undertake such removal and may permanently replace the unit with a substitute unit that is in the reasonable opinion of Rinnai, in a better or equal condition to the unit being replaced.
• Where the cylinder is installed outside the metropolitan area or further than 40 km from an authorized repairer, 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 unauthorized installations.
• Failure or damage caused by alterations, service or repair work carried out by individuals not authorized by Rinnai.
• Where the cylinder has failed directly or indirectly as a result of poor water quality outside the limits specified (refer to 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 cylinder 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 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

Warranty examples in the real world
We understand warranty information can be confusing. To help clarify what this means in the real world we have developed some residential application scenarios to clarify what would fall within warranty and what wouldn’t

Cylinder leaks as a result of a faulty inner cylinder and causes damage to carpets and flooring| 11 months| Yes/No| Cost of cylinder replacement covered by Rinnai. Consequential loss, damage to carpets and flooring, is not1.

Consequential losses
All cylinders are required to be installed with a drip tray, this is a mandatory requirement of the installation. If damage is caused by a leaking cylinder that has not been installed with a drip tray the owner can seek compensation through the installer or consider claiming on insurance.

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

http://Rinnai.co.nz
Tel: 0800 746 624
http://www.youtube.com/rinnainz
http://facebook.com/rinnainz

References

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

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