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Enamel Mains Pressure Indoor/Outdoor Cylinders

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Extended range of flexible options

Can be installed outside or inside

This extended range of electric hot water cylinders can be installed either inside your home like a traditional cylinder, or outside your home to free up extra space. With a wide range of sizes and capacities to meet the needs of every home, these offer a versatile solution for those looking at electric cylinders. Furthermore, the 250 L and 280 L sizes have the option of adding a second element to make hot water recovery times faster.

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Product Details

Suitable for

  • indoor and outdoor installations
  • mains and low pressure systems
  • residential and commercial water heating applications
  • dual plumbing connections (215, 275, 340 L)
  • 250 L and 280 L cylinders have an option of a second element making recovery times quicker

Hard or aggressive water will need to be treated in order to use this product, please test before use.

Not suitable as a spa or pool heater, or for solar thermal.

30L cylinder

If installing the 30 L unit outdoors, the power cable requires protection in conduit, as it is not UV-rated, or alternatively, the unit could be hardwired.

Technical Specifications

Warranty
7 years

IP rating
IPX4

TPR
supplied

Codes, capacities, and dimensions

Model Element size Code Diam. (mm) Height (mm)
30 L 2 kW MEU030415E20 415 470
50 L 2 kW MEU050488E20 488 640
50 L 3 kW MEU050488E30 488 640
90 L 2 kW ME090488E20 488 995
90 L 3 kW ME090488E30 488 995
135 L 2 kW ME135488E20 488 1395
135 L 3 kW ME135488E30 488 1395
135 L 2 kW (eco port) ME135590E20 590 935
135 L 3 kW (eco port) ME135590E30 590 935
180 L 2 kW ME180488E20 488 1790
180 L 3 kW ME180488E30 488 1790
180 L 2 kW (eco port) ME180590E20 590 1190
180 L 3 kW (eco port) ME180590E30 590 1190
215 L 3 kW ME215515E30 515 1830
250 L 3 kW (eco port) ME250590E30 590 1575
250 L 2 x 3 kW (eco port) ME250590DE30 590 1575
275 L 3 kW ME275685E30 685 1275
280 L 3 kW (eco port) ME280590E30 590 1740
280 L 2 x 3 kW (eco port) ME280590DE30 590 1740
340 L 3 kW ME340685E30 685 1520

Construction

High quality glass lined (vitreous enamel) inner cylinder. Sturdy corrosion resistant coloursteel outer casing, and high density expanded polyurethane foam insulation.

Colour

Dune
Bunnings colour match (for touchups):
– Base Delux Vivid White
– Can size 0.25
– M OY7.75, EE OY8.25, G 0Y2.75

Connections

  • Hot and cold water connections ¾ ” (20 mm)
  • TPR ¾ ” (20 mm)
  • Eco port ¾ ” (20 mm) (selected models)

Element

cTech element positioned at the bottom of the cylinder, and top of cylinder (if dual element). Top element is positioned on its side.

Pressure limiting valve

500 kPa (approx.) all models

Cold water pressure relief valve

700 kPa (approx.) all models

Thermostat

The thermostat setting is between 60-75 °C. Maximum thermostat setting, in order to maintain the warranty, is 75 °C.

TPR

Rating of the TPR supplied with the cylinders:

  • 850 kPa models: 10 kW / 850 kPa, 99 °C
  • 1000 kPa models: 10 kW / 1000 kPa, 99 °C

Weights

Model Weight empty Weight full
30 L 19 kg 79 kg
50 L 26 kg 79 kg
90 L 44 kg 134 kg
135 L diam 488 56 kg 191 kg
135 L diam 590 49 kg 187 kg
180 L diam 488 60 kg 242 kg
180 L diam 590 61 kg 244 kg
215 L 83 kg 298 kg
250 L 82 kg 332 kg
275 L 87 kg 364 kg
280 L 85 kg 365 kg
340 L 92 kg 432 kg

Cylinder recovery times

Based on a thermostat temperature setting of 60 °C and an incoming water temperature of 15 °C. Dual element cylinder times are based on both elements running at the same time. In reality only one element will be running at a time (non-simultaneous).

Model Element Heat up time Recovery rate
30 L 2 kW 47 mins 36 L/h
30 L 3 kW 35 mins 54 L/h
50 L 2 kW 1 hr 18 mins 36 L/h
50 L 3 kW 58 mins 54 L/h
90 L 2 kW 2 hrs 38 mins 36 L/h
90 L 3 kW 1 hr 45 mins 54 L/h
135 L 2 kW 3 hrs 56 mins 36 L/h
135 L 3 kW 2 hrs 37 mins 54 L/h
180 L 2 kW 5 hrs 15 mins 36 L/h
180 L 3 kW 3 hrs 30 mins 54 L/h
215 L 3 kW 4 hrs 11 mins 54 L/h
250 L 3 kW 4 hrs 51 mins 54 L/h
250 L 2 x 3 kW 2 hrs 26 mins 109 L/h
275 L 3 kW 5 hrs 21 mins 54 L/h
280 L 3 kW 5 hrs 38 mins 54 L/h
280 L 2 x 3 kW 2 hrs 49 mins 109 L/h
340 L 3 kW 6 hrs 37 mins 54 L/h

5 kW accessory kit

21253: 5 kW optional accessory kit for those that need fast recovery (250 L and greater).

Compliance

No cylinder wrap required. All Rinnai cylinders meet the NZ Minimum Energy Performance Standard (MEPS).

Market release

September 2025

CAD/BIM Downloads

FAQs

In all Rinnai cylinder instructions, we mandate the use of a drip tray. This is because all cylinders have the potential to leak water and cause extensive damage.

Our instructions state: The Rinnai warranty does not cover any consequential loss from leaks to the cylinder, so it’s important a suitably drained drip tray/catch pan is fitted as per AS/NZ 3500.4:2015 5.4 and G12/AS1 6.11.3. Like-for-like replacements are a grey area as most installers will only replace the cylinder to the same configuration as the cylinder that is being replaced. In these instances, Rinnai still maintains that a drip tray should be fitted. This protects the homeowner and the building from any future problems should a leak occur.

If a drip tray cannot be fitted, then look at other possible options such as:
• Locating the cylinder outside
• Using a continuous flow gas hot water heater

  • As the world’s largest gas appliance manufacturer, Rinnai is widely regarded as the industry leader.
  • Rinnai products are known throughout the world for their superior quality, safety, technology and sophisticated control systems, all factories are ISO 9001 and/or ISO 14001 certified.
  • We have an established 40 year history in New Zealand.
  • Rinnai are happy to advise that we now have an IANZ accredited Test Lab for MEPS testing on Hot Water Cylinders. The lab uses the latest in test equipment and can test all type of Hot Water Cylinders for MEPS heat loss testing.

We realise there’s a lot of information out there. Water heating is important and it’s better to spend the time up front deciding on what you need and what’s important.

We have an experienced customer service team that can walk you through the process. For those more complicated projects we also have a free specification service. Give us a call: 0800 RINNAI (0800 746 624)

Installation costs are difficult to provide as every installation is different. Factors such as the length of pipe required, whether you have accessories fitted, how far away you live and choosing an internal or an external unit all influence the overall cost.

If you’re interested in a Rinnai hot water heating solution, we highly recommend you contact a plumber/gas fitter who will be able to explain all the options to you.

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