HJ Cooper Enamel Mains Pressure Hot Water Cylinders


HJ Cooper Enamel Mains Pressure Hot Water Cylinders

HJ Cooper by Rinnai enamel mains pressure hot water cylinders offer exceptional performance and reliability. With a range of slim diameters, they are an easy replacement option for your old electric hot water cylinder.

Peace of mind
Backed by Rinnai after sales support.

Energy Efficient
Curved element design ensures 98% of water is heated
No cylinder wraps required, all HJ Cooper cylinders meet NZ MEPS
 
MEPS = Minimum Energy Performance Standard

Convenience

Large range of sizes (30-300 L), there's an electric hot water cylinder to suit
Easy replacement, 488 mm and 590 mm diam. matches traditional NZ cylinder sizes
Auto reset thermostat option available for solar and hot water heat pump applications

Future proof your home
Eco inlet connection allows connection to an open loop hot water heat pump now or in the future—saving you up to 60% on your power bill.
 
Install as a low pressure system then connect, without replacing your cylinder, to the luxury of mains pressure when you are ready.
 

Suitable for:
• Indoor installations
• Mains  and low pressure systems
• Domestic water heating applications
• Left or right hand plumbing connections 
• Connection to open loop solar or hot water heat pump systems

Not suitable as a pool or spa heater.

Water quality
HJ Cooper water heaters are manufactured to suit most New Zealand council water supplies. However some water supplies can have a detrimental effect on the water heater, its operation and life expectancy.

Water supplies with a high level of calcium carbonate (hard water) can cause scaling on hot surfaces. We recommend a water temperature of no more than 65 °C to minimise scale build-up. Scale reducing or water softening devices should be considered in hard water areas. The unit is not guaranteed against damage due to scaling. 

HJ Cooper Enamel Mains Pressure Hot Water Cylinders

HJ Cooper Enamel Mains Pressure Hot Water Cylinders

HJ Cooper Enamel Mains Pressure Hot Water Cylinders

 
N/A
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HJ Cooper Stainless Steel Mains Pressure Hot Water Cylinders

HJ Cooper Stainless Steel Mains Pressure Hot Water Cylinders

 
N/A
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Hotflo Mains Pressure Hot Water Cylinders

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Rinnai INFINITY® EF24 External (REU-K2430WG)

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43 kW
6.8 stars 
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Type: Internal

Sizes: 30, 50, 90, 135,180, 250, 300

Max pressure: 850 kPa

kW: 1.5, 2 or 3kW

Curved element: Yes

Wetback Option: No

Solar Enabled: No

Heat pump ready: Yes

Warranty: 5 Years

Type: Internal

Sizes: 135, 180, 250, 300

Max pressure: 850 kPa

kW: 2 or 3kW

Curved element: Yes

Wetback Option: No

Solar Enable: Yes

Heat pump ready: Yes

Warranty: Limited 20 years

Type: Internal/External

Sizes: 135, 180, 215, 270, 340

Max pressure: 850 kPa

kW: 2,3 or 3.6

Curved element: Yes

Wetback Option: No

Solar Enabled: Yes

Heat pump ready: Yes

Warranty 5 Years

Type: Internal/External

Sizes: 24L - 32L

Max star rating: 6.8

Efficiency: 95%

Savings over electric on NG: 66%

Savings over electric on LPG: 28%

Warranty: 10 years pro rata on heat exch, 3 years parts


 

Models and capacities MEUS03040015 = 30 L (1.5 kW)
MEUS03040030 = 30 L (3 kW)
MEUS05048815 = 50 L (1.5 kW)
MEUS05048830 = 50 L (3 kW)
ME09048820 = 90 L (2 kW)
ME09048830 = 90 L (3 kW)
ME13548820 = 135 L (2 kW)
ME13548830 = 135 L (3 kW)
ME18048820 = 180 L (2 kW)
ME18048830 = 180 L (3 kW)
ME18059020 = 180 L (2 kW)
ME18059030 = 180 L (3 kW)
ME25059020 = 250 L (2 kW)
ME25059030 = 250 L (3 kW)
ME30059020 = 300 L (2 kW)
ME30059030 = 300 L (3 kW)
Within the range there are different element sizes and configurations, and thermostat options. For further details refer to the 'Mains Pressure Classic - Enamel' section in the Storage Hot Water Pocket Guide.
Anode High performance anode fitted
Connections Hot and cold water connections ¾ " (20 mm)
Construction Inner tank: High grade enamel steel
Outer casing: Galvanised steel
Element Long-life Superloy 825 alloy sheathed element, incorporated into an easily removable outer plate, should replacement be necessary.
• 30 L: 1.5 or 3 kW
• 50 L: 1.5 or 3 kW
• 90 L: 2 or 3 kW
• 135 L: 2 or 3 kW
• 180 L 488 mm diam.: 2 or 3 kW
• 180 L 590 mm diam.: 2 or 3 kW
• 250 L: 2 or 3 kW*
• 300 L: 2 or 3 kW*
* Twin element options available
Maximum operating pressure 850 kPa
Pressure testing To 15 bar
Thermal insulation CFC-free polyurethane foam, compliant with MEPS standards.
Thermostat Robert Shaw 30 A contact thermostat, manually resettable at 85 °C. Thermostat can be upgraded to an auto-reset thermostat for solar and hot water heat pump applications.
TPR valve Rating of TPR supplied with cylinder—factory set to 850 kPa and 90 °C.
Weight Empty of 488 mm Diam. Cylinders 135 L = 44.2 kg
180 L = 54.5 kg
Cylinder recovery times (theoretical)

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

30 L

1 hr 3 mins (1.5 kW), 31.8 mins (3 kW)

50 L

1 hr 45 mins (1.5 kW), 52.8 mins (3 kW)

90 L

2 hrs 22 mins (2 kW), 1 hr 35 mins (3 kW)

135 L

3 hrs 32 mins (2 kW), 2 hrs 22 mins (3 kW)

180 L

4 hrs 44 mins (2 kW), 3 hrs 9 mins (3 kW)

250 L

6 hrs 34 mins hrs (2 kW), 4 hrs 23 mins (3 kW)

3 hrs 17 mins (2 x 2 kW), 2 hrs 11 mins (2 x 3 kW)

300 L

7 hrs 53 mins (2 kW), 5 hrs 15 mins (3 kW)

1 hr 56 mins (2 x 2 kW), 2 hrs 39 mins (2 x 3 kW)

HJ Cooper mains pressure enamel 30, 50, 90, 135 and 180 L cylinder dimensions diagram



Mains pressure enamel 180 squat 250 and 300 litre dimensions diagram

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