THE WATER HEATER(S) SHALL BE RHEEMGLAS INDOOR GAS MODEL No. 441170 WITH AN HOURLY GAS INPUT OF 33 MJ (NATURAL) AND A HOURLY RECOVERY RATE OF 126 LITRES (NATURAL) THROUGH A 45°C RISE. THE WATER HEATER(S) SHALL BE APPROVED TO THE NEW ZEALAND STANDARD NZS5262 THE WATER HEATER SHALL BE FACTORY ASSEMBLED AND TESTED. GAS CONTROLS SHALL INCORPORATE OVER TEMPERATURE ENERGY CUT OFF SWITCH AND A 100% SAFETY SHUT DOWN FAILURE CONTROL IN THE EVENT OF THE THERMOSTAT BECOMING INOPERATIVE.