Author Archives: Hot Water Cylinders NZ

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Rinnai Discontinues the iHeat Ducted Heating Range

Rinnai Corporation, the leading makers of tankless gas water heaters in New Zealand, announces the discontinuation of their iHeat central heating products dues to “cost increases of key internal components.”

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The Rinnai iHeat is a ducted heating system that uses hot water to warm and circulate air, providing fast central heating to the entire home. The system is designed to operate in conjunction with a Rinnai Infinity continuous flow water heater. It has been touted as a healthy central heating option as it maintains the air quality and reduces the likelihood of allergens entering the home. The iHeat system is defined by its discreet installation and high energy efficiency (up to 80 percent).

Despite its wide public reception and positive reviews, the Rinnai team has decided to stop its production as a result of their ongoing product rationalisation, citing the following reason:

“Cost increases of key internal components has made producing the iHeat uneconomical.”

iHeat products will remain on the market until the end of December this year, or until stocks have run out. Nevertheless, Rinnai reassures iHeat users that spare parts will remain available and all warranties for iHeat will be honoured over the long term.

An Alternative to iHeat

With the iHeat phased out, Rinnai offers an equally efficient and powerful central heating system: Brivis ducted heaters.

Brivis is the leading brand of gas ducted central heating solutions in New Zealand, and has only been recently owned as a subsidiary of the Rinnai Corporation. The brand supplies a complete range of highly efficient ducted gas central heating products specifically designed for the NZ conditions.

“The addition of Brivis to the Rinnai range means that a more complete heating range is now available,” said the Rinnai team. “In most instances where an iHeat has been specified, Rinnai can supply an equivalent Brivis central heating solution.”

Brivis heaters may not have some of the “smarts” found in the iHeat, but their performance is highly comparable. They are also extremely efficient, with the range offering 6-Star rated systems such as the StarPro 6.

Some of the noteworthy features of Brivis ducted heating systems include:

  • Up to 16 fan speed settings that better match air volume and flow to your home
  • Zero ChillTM soft fan that prevents cold drafts on start-up
  • Automatic gas modulator that maintains the temperature level using a minimal amount of energy. You can set your home to a comfortable temperature and leave the system to keep it steadily heated at that level.
  • Ability to create up to four distinct zones
  • Ability to set the system to automatically turn on/off so you come home to a warm house or limit heating when not needed
  • Simple and easy to use programmable controller with both manual and auto modes
  • Compact, splittable and weatherproof units that ensure ease of installation.

More information on the Brivis range can be found at brivis.co.nz. To enquire about an installation, please contact our home heating specialists on 0800 4 CYLINDERS or 0800 429 546.

Rinnai Discontinues INFINITY Composite Recess Box

Rinnai Corporation, leading manufacturer of tankless gas water heaters, announces the discontinuation of its INFINITY™ composite recess box (R1406).

The composite recess box was introduced as an affordable alternative to the metal recess box designed for housing some units from the INFINITY™ range. Composite products are known for being incredibly strong and corrosion resistant, making them perfect for external applications. Despite this, the Rinnai NZ team explains that demand for the composite recess box is low, hence their decision for its discontinuation.

Meanwhile, the metal recess box will continue to be available.

INFINITYTM Metal Recess Box

The Rinnai metal recess box allows you to virtually hide your INFINITYTM unit, pipe work and power supply into a cavity, ensuring a smooth and neat finish to the job.

It allows a continuous flow gas water heater to be partially or fully recessed into an external wall, unlike the composite recess box which can only be semi recessed. The composite recess box is also not suitable for fire rated walls. These are probably why the metal recess box proved to be a more popular option.

Constructed of folded galvanised steel and powder coated white, the metal recess box can easily be painted to match or complement the exterior cladding. It is suitable for the following external Rinnai INFINITY gas water heaters:

rinnai_composite_recess_box_discontinuedR1405 recess box:

  • A-Series: A16-A26 (current range)
  • VT16-VT26 (discontinued)
  • XR16-XR26 (discontinued)
  • V16-V24 (discontinued)

R1407 recess box:

  • EF24 (current model)
  • HD200 (current model)
  • HD250 (current model)
  • XR32 (discontinued)

Installing a metal recess box

The INFINITYTM metal recess box is ideal for new builds or major renovations as it needs to be installed during the framing stage, i.e. before the internal linings, claddings or building wrap are applied.

The Rinnai continuous flow gas water heaters are designed for external installation, and thus your metal recess box must be located in an above ground, open-air situation. The area must have natural ventilation, where flue gases are safely expelled and rapidly dispersed by wind and natural convection.

Generally, it can be mounted on any vertical structure with water and gas connections and enough clearance for the pipe work. You can install it on an outside wall below eaves, balconies and other areas, but you might want to reconsider siting it near bedrooms since water heaters inside a recess box operates at a slightly louder level than units located externally. In most cases, the metal recess box is better located near the kitchen where there is a high demand for instant hot water.

In addition to general clearances, you need to consider your local building codes regarding this type of installation. To make sure your INFINITYTM water heater is compliant and installed properly, consult a licensed gasfitter familiar with the system prior to installation.

For Rinnai installation advice and consultation, you may call us at 0800 TEAM EURO. For more information about the Rinnai metal recess box and gas water heaters, click here.

When Pressure Relief Valves Leak And What To Do

Recently there have been several claims against ‘leaking’ TPR valves. Upon testing it has been found that the relief valve is neither passing nor failing to reseat, the ‘leak’ appears to be water passing out of the blow-out cage which has opened when the easing lever has been operated too quickly during maintenance.

THE EASING LEVER SHOULD BE OPERATED SLOWLY

The purpose of the blow-out cage is to act as a ‘back-up’ relief valve which may (in certain circumstances) open when a high flow rate is passing through the TPR valve during emergency relief conditions and is normal.

Incorrectly sized or partially blocked relief drains causing back pressure may also cause the blow-out cage to activate again releasing water at the cylinder. The relief pressure of the blow-out cage is roughly 50% of the pressure rating of the TPR valve.

This new plastic device is manually resettable as opposed to the previous model which had a ‘one shot’ non-resettable metallic mechanism.

To reset the blow-out mechanism please follow the instructions belo

  1. (Fig 1) Once the water flow has ceased to turn the blow-out cage anti-clockwise to remove the device from the TPR valve body.
  2. (Fig 2) Push the valve stem back through the cage until both the stem and the washer are completely removed from the cage (a resonable amount of force will be required to push the bevelled end of the shaft through cage, lubricating oil will prevent the rubber washer from being pinched).
  3. (Fig 3) Fit the washer onto the stem and insert fully into the cage until the bevelled end ‘clicks’ back into position.
  4. (Fig 4) Fit the device into the TPR valve body and SLOWLY re-test the valve.

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One thing to note is that sometimes there may be a case where the valve can be genuinely faulty. Depending on age the valve may or may not be under warranty. In such cases, give us a call to book an inspection in.

Product Review: Paloma External Gas Water Heater

Gas water heaters are becoming a more and more popular option as time goes. They provide endless instantaneous hot water without the need for a storage tank, and prove to be more energy efficient than a traditional electric water heater.

If you are looking at upgrading to a gas water heater, Paloma water heaters are an excellent option. Established in 1911, based in Nagoya, Japan, Paloma is one of the world’s largest manufacturers of gas appliances and offer an excellent solution to your water heating needs in New Zealand.

THE PALOMA EXTERNAL GAS WATER HEATER

The Paloma external gas water heater systems are compact, stylish and inconspicuous systems made to provide efficient water heating. They are designed to take up the minimal required space outdoors, resulting in minimal impact on your home and surrounds. Loaded with features to ensure efficient water heating, Paloma gas water heaters compete with the best and provide an excellent alternative to electric water heaters, with 6 star energy efficiency, instant heat at the touch of a button, precise temperature control and an endless supply of hot water for your home.

paloma_continuous_flow_external_gas_water_heaterKey features and benefits:

  • Available in 16L, 24L and 27L options
  • Hot water circulating system compatible
  • Over heat limit switch
  • Water pressure relief valves
  • Flamesafe over-heat protection system
  • Flame failure device
  • Digital diagnostic display
  • Q function
  • Error code recall
  • LPG or NG models available

Specifications

Recommended Outlets: 1-3
Litres: 16-27L
Size: 520H x 350W x 163D – 651H x 331W x 254D (mm)
Weight: 21-26Kg
Output: 27.9 kW – 40.0 kW

CONCLUSION

Gas water heaters add value to your property and reduce running costs, and the Paloma is an excellent option if you want to convert to gas. Gas water heating is becoming highly desired both for the lifestyle and cost savings provided to us here in NZ. If you would like to upgrade to a Paloma gas water heater, talk to us today!

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How Water Cylinder Theft And How To Prevent It

Did you know that hot water cylinders are a target of theft? To most people, the thought of someone stealing your hot water cylinder would be ludicrous. But it is no joke, and hot water cylinder thefts continue to rise.

hot_water_cylinder_stolenCylinder Thefts And The Resulting Problems
The main target of hot water cylinder thefts are older low pressure hot water cylinder units which contain a large amount of copper. Copper fetches a significant price over metals like steel at scrap metal merchants, as high as $7.40 per kg, which means a 180L cylinder could be worth as much as $74, placing these cylinders containing copper at the top of the list for thieves.

However, the theft of the cylinder is not the only problem. When these thefts occur, the thieves are not exactly overly concerned about what state the property is left in, and as such usually take the quickest route to removing the cylinder which involves quickly sawing or ripping pipes, letting the cylinder drain onto the floor and then removing the cylinder by force. This causes a substantial amount of damage, not only to the pipework and the area surrounding the cylinder, but extending into the rest of the house due to the flooding.

Primary targets have been older homes which are under renovation or construction and are easier to access, not occupied and are likely to have an old cylinder about. Boarded up unused houses and houses which look to have been unoccupied for a while (such as when the occupants go on holiday) are also common targets.

However, due to these thefts, it is required by law to produce ID when selling scrap metal to a metal dealer. This makes it more difficult for thieves to sell the scrap once they’ve taken it, and acts as a deterrent to minimise the amount of theft that is happening.

How To Protect Yourself
There are steps you can take to minimise the risk of your hot water cylinder being targeted by thieves. One of the best steps you can take is to make your property look occupied, even if you are going away. This could involve having a friend clear out your letterbox regularly, leaving an old car parked in the driveway or leaving a light or two on to seem like someone is home. Thieves usually target vacant homes when going for cylinders, so if it looks like someone is home it will minimise the chance that they will try your home. Always have a friend or family member check on your home regularly to ensure it is secure while you are away.

Other measures you can take include making sure your cylinder is securely strapped into its installed position. This makes removal much more difficult, and is likely to put off opportunists. For home owners with instantaneous gas water heating units installed outside, there are brackets and cages which you can install on the unit to make removal next to impossible.

Luckily, modern mains pressure hot water cylinders are usually either stainless steel or enamel, which makes them much less of a target for theft than the older low pressure copper cylinders. While this does not guarantee that your home won’t be targeted, it certainly means that the reward is far smaller and will make the break in much less worthwhile.

Always Report Theft
If you have been a victim of theft, it is always important to report it to the police, even if you believe the damage is insignificant or you believe that they won’t be able to help. Reporting crimes helps to paint a bigger picture, allowing the police to see how prevalent the problem actually is and treat it as a priority. It can lead to an investigation which could result in the apprehension of the culprit. It will also help with insurance claims, as a police report can help with the process of filing a claim.

If you would like assistance in securing your water heater or have questions about how you can prevent theft from your property, contact us today.

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Product Review: Rinnai Hotflo Hot Water Heat Pump

Have you considered heating your water with a heat pump? Heat pump water heaters are becoming increasingly popular with home owners looking for more efficient methods of water heating.

How do they work and what are the benefits?
Heat pump water heaters work like fridges in reverse, using electricity to move heat from one place to another instead of generating the heat. They can be up to three times for efficient than a conventional electric hot water cylinder. To move the heat, heat pump water heaters pull heat from the surrounding air and dump it at higher temperature into a tank to heat the water.

rinnai_hotflo_heat_pumpTHE RINNAI HOTFLO HEAT PUMP WATER HEATER

The Rinnai Hotflo Hot Water Heat Pump was designed for homeowners who want to significantly reduce running costs while minimising their carbon footprint. Rinnai state that the Hotflo heat pumps offer an energy consumption profile similar to solar water heating systems and can generate up to 700 liters of hot water per day. Under normal operating conditions, the Hotflo will will around 66% electricity than a typical electric hot water cylinder.

Key benefits and features:

  • Retrofits to virtually any brand of electric hot water cylinder
  • Simple installation, usually takes less than one day
  • Carbon footprint reduction with reduced energy consumption

Specifications

Rated input 1.9 kW
Max. energy output 6.0 kW
This is the maximum possible from the unit and should be used to ensure the tank TPR valve is suitably sized.
Max. water pressure 850 kPa
Refrigerant type/mass R134A/750 g
Refrigerant pressure High 2.7 MPa, Low 1.0 MPa
Refrigerant compressor oil Type: Neo 32, quantity: 520 ml
Ingress protection IP24
Noise level Fan approx. 55 dB(A)
Net weight 60 kg
Power supply 240 V, 50 Hz

Ambient temperature operating range
Operating temperature range is -7 to 45 °C. When the ambient temperature is below 2 °C the tank temperature achieved may be lower. When the ambient temperature is high, the air supply fan will run at a lower speed.

Start up protection
When the power is first turned on to the heat pump, or when the power is cut, then retsored, the unit will not start for three minutes. This is to protect the condenser.

Defrosting function
The heat pump has protection systems that will stop the operation of the unit if; the air inlet/outlet is blocked, voltage is out of nominal range (207-255 V), over pressure, or over temperature in the refrigerant system.

CONS OF THIS PRODUCT

Despite being very efficient, the best heat pump units will be more costly than an electric water heater and are more likely to have failures than electric water heaters. Installation will also be trickier, as they need a supply of warm air to be able to run effectively. This can be a disadvantage during the winter and in colder places.

Indoor Installation
Installation indoors could be challenging due to how these heat pump systems work. Because the heat pump uses the air around it, and exhausts cold air, it will be increasing more difficult for it to extract heat from the same cold air it has extracted. This wastes power and extends the running time of the heat pump, making it less efficient. If using a split system, you will want to heat pump installed outside and the tank inside, which will work well.

Repair Costs
It is common to be facing repairs soon into the life of a heat pump system, usually once the warranty has expired.

Noise
Heat pumps do make a humming sound similar to an air conditioner while operating. This could cause disruption depending on placement and how sensitive to sound the occupants of the house are, so this should be taken into account when deciding where to install the unit.

CONCLUSION

Heat pump water heaters are a good option for high hot water users who want to improve the efficiency and performance of their water heating system. They provide a fast ROI, being up to three times more efficient than electric water heating systems. The Rinnai Hotflo Hot Water Heat Pump is a top of the range choice if you want to go the heat pump route, providing you with efficient water heating and hot water on standby.

For more information on the Rinnai Hotflo Heat Pump, download this PDF.
pdfRinnai Hotflo Heat Pump Water Heater PDF

 

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Product Review: Rinnai Smart Cylinder 180L Stainless Steel

All creature comforts can be made “smart” these days, from TVs to washing machines and now even our heaters. And what difference do they make! Not only do they allow us to make better use of our time, but they also help us trim down our household bills.

rinnai_smart_cylinder_180LThe 180L Rinnai Smart Cylinder is one such modern-day wonder. You wouldn’t think a hot water cylinder could save you cash, but this one promises just that! To be more precise, the Rinnai Smart Cylinder promises to shave up to 10% off your water heating costs. That’s a huge savings considering the fact that hot water heating accounts for around 30% of the average household energy bill.

It’s called smart for a reason: its thermostat learns your household’s hot water usage behaviour so it only heats water when it’s actually needed. This is unlike traditional electric hot water cylinders, which heats water round the clock.

In theory, it’s a total game changer. But does it deliver? Let’s take a closer look at its features, benefits and performance.

PRODUCT INFORMATION

The Rinnai Smart Cylinder is suitable for residential indoor water heating applications with mains and low pressure systems. It has triple inlets that make installation easy, and a curved element design that ensures 98% of water is heated.

Product name: Rinnai Smart Cylinder Low-Medium Pressure
Construction: High grade duplex stainless steel tan
Product diameter/height: 488/1660
Capacity: 180L
Connections: Hot and cold water connections ¾” (20mm)
Element: 3kW Incoloy 825 alloy sheath element positioned at the bottom of the tank
Max. working pressure: 120 kPa
Thermostat: Cothern iQuaflex 14 A probe thermostat
Cylinder recovery time: 3 hrs 9 mins (3kW) Based on a thermostat temp.setting of 60 °C and an incoming water temp. of 15 °C
Warranty: 10 years

The smart cylinder features an easy-to-use LCD control pad where you can access its three modes:

  • iQ Automatic Mode – This smart leaning mode enables the cylinder to learn a week’s worth of hot water usage in the home, which then sets a savings algorithm that automatically adjust the cylinder heating times according to your hot water usage pattern. Hot water usage habits are constantly monitored, so the saving algorithm is always updated according to anticipated demand. This means you always have a certain amount of hot water at all times depending on the level you select.
  • Vacation Mode – A hot bath is always a nice way to shake off the stress and aches of traveling. Traditionally, you’ll have to wait for your water heater to heat up nicely before you could take that much-needed relaxing shower. But with the Rinnai Smart Cylinder, you can have hot water as soon as you enter the door.

You simply set it to vacation mode, select the number of days you will be away for and the cylinder takes care of the rest. It keeps the water at a minimum temperature (6°C) while you are away to save power and keep the water from freezing in colder areas. After the specified period, the cylinder automatically reverts back to the operating mode you have selected before vacation was set.

  • Manual Mode – This mode operates the Rinnai Smart Cylinder as a traditional electric hot water cylinder. It’s most useful when you are having guests over. You simply set it using the mode button to make sure water is permanently maintained at a temperature.

NOTEWORTHY FEATURES

There are few other things that make the Rinnai Smart Cylinder a great option for hot water cylinder for your home.

rinnai_smart_cylinder_180L_features

  • A water level indicator
    Just above the shower symbol, there are visual levels that show the estimated amount of hot water available (occurs in iQ mode). The default setting (level 3) achieves energy savings whilst it ensures you have enough hot water available.
  • Maintenance/error indicator

This features makes troubleshooting easy. If something is wrong with the cylinder, an error code is indicated by the maintenance logo, the error code number and a flashing background light.

  • Child lock
    Prevent unwanted access to the control pad to keep the whole family safe.
  • Biosafe operation

The Rinnai Smart Cylinder meets the New Zealand Building Code requirement to disinfect water for legionella bacteria. To ensure water safety, the system performs heating above 60 °C whenever it detects risk conditions (<60 °C for 21 days).

CONS

The Rinnai Smart Cylinder is ideal for households that have a consistent pattern of hot water use. Otherwise, its iQ mode will not be accurate and will provide little advantage in terms of cost savings.

The smart cylinder doesn’t work for an open loop solar or hot water heat pump system, and it’s strictly for indoor use. You can’t use it as a pool or spa heater.

The Verdict

The Rinnai Smart Cylinder is a reliable appliance all in all. It does its job well and even saves you money. Its smart features offer benefits that are well worth the upgrade from gas, if you’re ever considering it.

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We Have Hot Water Cylinders for Sale!

Gas heaters can be found in many homes in Auckland. These heating systems often use hot water cylinders to ensure copious amounts of hot water are stored and available on demand. There are a number of things to consider when choosing a hot water cylinder for your home, i.e. capacity, efficiency, cost effectiveness and suitability to your boiler system.

Types of Hot Water Cylindershot_water_cylinders_for_sale

There are two main types of cylinders:

  • Unvented Cylinders. These work off the cold water main pressure, providing hot water on demand. Since they operate without a feeder tank, unvented cylinders free up space in your loft and allows you to install the cylinder anywhere around your home.

Generally constructed with top quality stainless steel, unvented cylinders have long lifespan and high durability with manufacturer’s warranty that range up to 25 years.

Since they operate at higher pressure than traditional vented units, unvented systems require additional safety features and need to be installed by boiler specialists. This adds up to the installation costs.

  • Vented Cylinders. These copper tanks are fed cold water from the mains feed and use gravity to drive water through the pipes to the home’s heating system. They are suitable for use with standard heat only boilers. A vent pipe connects the cylinder and the cold water in the header tank.

Vented hot water cylinders are less complicated than vented systems, which means they are easier to install and maintain.

Other types of hot water cylinders come in both vented and unvented systems:

internal_gas_hwc_for_saleDirect Systems

In direct systems, an internal element (usually an immersion heater) heats the water in the cylinder directly. The heated water is fed out the top of the cylinder and supplied to the outlet (i.e. a shower or a tap) on demand.

Direct cylinders are an electric only option and are normally used when no central heating is installed, such as in flats and apartments.

Indirect Systems

As the name suggests, indirect cylinder systems heat water indirectly via an external heat source such as a gas boiler or solar thermal. An immersion heater is typically fitted as a direct backup or supplementary heat source. This ensures you have a steady flow of hot water even when your boiler is broken.

Indirect gas heaters particularly heat up and recover faster, making them a cost effective option. If you want to save cash without compromising performance or efficiency, you can always switch to gas cylinders any time.

We offer Best Price Guarantee!

Just as not all hot water cylinders are created equal, not all varieties are priced the same. Think your quote is cheap? Try Us!

We carry a wide selection of hot water cylinders from leading brands including:

  • Bosch
  • Rheem
  • Econergy
  • HJ Cooper
  • Rinnai
  • Peter Cocks
  • Apex Valves
  • Chromagen
  • Green Glo
  • Triumph
  • Thermann
  • And more

For hot water cylinder repairs, upgrades or replacements, call our free NZ hotline: 0800 429 546.

We Want A Hot Water Hero!

HWC ad 2We know the right guy is out there!
If your passion is hot water then Hot Water Cylinders NZ need you!Your responsibilities will include:

  • 60% Hot water cylinder installations
  • 20% Hot water gas units
  • 10% Solar Heating (servicing and fault finding)
  • 10% Heat pumps and Boilers

You Job position will include:

  • Vehicle, phone, fuel card and uniform
  • Industry Specialised Tools Provided
  • Training in systems

Every job will have a KPI and if accomplished you will be rewarded above and beyond your epic hourly pay. We have a unique package waiting for the right candidate. If hot water is your super power, apply now! Please submit your CV to cv@hotwatercylinders.nz

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Hot water cylinder repairs in Auckland

Checkout some of our latest hot water cylinder repairs in Auckland!

We pride ourselves with over 1500 Hot water cylinder repairs in 2017. Hot Water Cylinders NZ is your #1 water heater specialist in repairs and replacements. If you have a fault, talk to us.

Repaired faulty cold water expansion valve.

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New Pipework due to leaks

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Resealing of incoming connections

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Installation of new Rheem Stellar

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Replacement of fault change over regulator

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Repair of exiting Rheem Instant water heater

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Repair of gas leak

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Replacing existing low pressure hot water cylinder limiting valve

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Temporary hot water cylinder installation to accommodate renovations

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Inlet valve and pipe repair

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Replacing therm couple on gas hot water cylinder

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Gas valve repairs on Rheem Stellar

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