THE WATER HEATER(S) SHALL BE RHEEM ELECTRIC MODEL No. 312025 WITH AN HOURLY INPUT OF __kW AND AN HOURLY RECOVERY RATE OF ___LITRES THROUGH 50°C RISE. THE WATER HEATERS SHALL CONFORM TO NEW ZEALAND STANDARD [TBA]. THE WATER HEATER(S) SHALL BE FACTORY ASSEMBLED AND TESTED. MODELS SHALL BE MANUFACTURED WITH IMMERSION ELECTRIC HEATING UNITS FITTED WITH A SURFACE MOUNTED THERMOSTAT INCORPORATING A SAFETY OVER TEMPERATURE ENERGY CUT OUT. THE HEATER(S) SHALL BE INSULATED USING CFC FREE MATERIAL.