Discontinued Product, please contact 0800 RINNAI for more information

Discontinued Product, please contact 0800 RINNAI for more information

HJ Cooper Copper Low Pressure Hot Water Cylinders


HJ Cooper Copper Low Pressure Hot Water Cylinders

Our low pressure hot water cylinders are New Zealand's traditional electric cylinder. Manufactured in New Zealand since the 1930's an HJ Cooper hot water cylinder is the smart choice if you're looking for a low cost, high efficiency replacement.

Range of sizes
Extensive range of capacities (9-225 L) and sizes means hot water cylinder replacement is easy.

Custom built options available.

Energy efficient
No cylinder wraps required, all HJ Cooper hot water cylinders meet NZ MEPS.

MEPS = Minimum Energy Performance Standard

Easy installation
Connection to existing plumbing is easy with triple inlets, just choose left, right, or bottom for your cold water inlet.

Undersink range
Perfect if you need a little extra hot water—four sizes available 9-44 L.

Wetback options
Many wood, pellet fires, or burner systems can have wetbacks fitted to them. A wetback can work as a valuable supplement to your hot water system.
  

Suitable for:
  • Low pressure indoor residential and commercial water heating applications

 •  Maximum operating pressures up to 76 kPa
  • Left, right, or bottom plumbing connections 

Not suitable as a pool or spa heater.


 

Model Codes and Capacities: Undersink LCUS00934010 = 9 L (1kW)
LCUS01434010 = 14 L (1 kW)
LCUS02234010 = 22 L (1 kW)
LCUSO4444515 = 44 L (1.5 kW)
Model Codes and Capacities: Classic
(energy cut-out thermostat fitted) 
LC04444515 = 44 L (1.5 kW)
LC09043020 = 90 L (2 kW)
LC09050020 = 90 L (2 kW)
LC09053020 = 90 L (2 kW)
LC13547020 = 135 L (2 kW)
LC13550020 = 135 L (2 kW)
LC13551020 = 135 L (2 kW)
LC13553020 = 135 L (2 kW)
LC13554020 = 135 L (2 kW)
LC13555020 = 135 L (2 kW)
LC18051030 = 180 L (3 kW)
LC18051020 = 180 L (2 kW)
LC18053030 = 180 L (3 kW)
LC18053020 = 180 L (2 kW)
LC18054030 = 180 L (3 kW)
LC18054020 = 180 L (2 kW)
LC18055030 = 180 L (3 kW)
LC18055020 = 180 L (2 kW)
LC22555030 = 225 L (3 kW)
LC22560030 = 225 L (3 kW)
Model Codes and Capacities: Wetback
(loose riser, bottom entry, energy cut-out thermostat NOT fitted)
 
LCW13547020 = 135 L (2 kW)
LCW13550020 = 135 L (2 kW)
LCW13551020 = 135 L (2 kW)
LCW13553020 = 135 L (2 kW)
LCW13554020 = 135 L (2 kW)
LCW13555020 = 135 L (2 kW)
LCW18051030 = 180 L (3 kW)
LCW18051020 = 180 L (2 KW)
LCW18053030 = 180 L (3 kW)
LCW18053020 = 180 L (2 kW)
LCW18053020 = 180 L (2 kW)
LCW18054030 = 180 L (3 kW)
LCW18054020 = 180 L (2 kW)
LCW18055030 = 180 L (3 kW)
LCW18055020 = 180 L (2 kW)
LCW22555030 = 225 L (3 kW)
LCW22560030 = 225 L (3 kW)
Operating pressures

Max. inlet pressure = 76 kPa

Max. working pressure = 76 kPa

Anode Not required
Connections Hot and cold water connections ¾ " (20 mm)
Construction High grade copper inner cylinder.
Galvanised steel outer casing.
Element Low watt density nickel plated copper, 1.25 " BSP boss
Thermal Insulation CFC-free polyurethane foam insulation, compliant with NZ MEPS.
Thermostat: Classic 7 " Cotherm probe 20 A over-temperature thermostat, manually resettable at 85 °C
Thermostat: Wetback 7 " Cotherm probe 20 A (no over-temperature)
TPR Valve N/A
Cylinder recovery times (theoretical) Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.
9 L 37.8 mins (1 kW)
14 L 44.4 mins (1 kW)
22 L 1 hr 10 mins (1 kW)
44 L 1 hr 32 mins (1 kW)
90 L 2 hrs 22 mins (1 kW)
135 L 3 hrs 32 mins (2 kW)
180 L 4 hrs 44 mins (2 kW), 3 hrs 9 mins (3 kW)
225 L 3 hrs 56 mins (3 kW)
Discontinued late 2017, superseded by Rinnai Low Pressure Copper cylinders
Vol. (litres)  A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm)
90 Ø 430 1115 150  N/A  ¾ " ¾ " N/A
90 Ø 500 820 175  N/A  ¾ " ¾ " N/A 
90 Ø 530 745 175  N/A ¾ " ¾ "  N/A
135 Ø 470 1315 180  170  ¾ " ¾ " 1 "
135 Ø 500 1165 175 170  ¾ "  ¾ "  1 "
135 Ø 510 1170 175  170  ¾ "  ¾ "  1 " 
135 Ø 530 1055 175 170  ¾ "  ¾ "  1 " 
135 Ø 550 980 180  170  ¾ "  ¾ "  1 " 
180 Ø 510 1495 175  170  ¾ "  ¾ "  1 " 
180 Ø 530 1370 175 170  ¾ "  ¾ "  1 " 
180 Ø 550 1265 180  170  ¾ "  ¾ "  1 " 
225 Ø 530 1540 180  170  ¾ "  ¾ "  1 " 
225 Ø 600 1330 205  170  ¾ "  ¾ "  1 " 


E = cold inlet, F = hot outlet, G = WBC connector


 

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