DIMENSIONS AND TECHNICAL DATASPECIFICATIONSPRS-150N PRS-150L PRS-250NPRS-250CNPRS-250LPRS-250CLOutput (kW) 3.4 3.4 5.9 5.9Maximum heating capacity (Maximum room size) Refer to "Minimum & Maximum Rom Sizes" on page 14Electrical supply voltage 220 ~ 250 Volts AC 50HzGas connection R½/15Min inlet gas pressure (kPa) 1.13 2.75 1.13 2.75Max inlet gas pressure (kPa) 3.5Burner gas pressure low rate (kPa) 0.11 0.15 0.13 0.16Burner gas pressure high rate (kPa) 0.53 0.73 0.69 0.95Number of injectors 2 2 3 3Main burner injector orifice diameter (mm) 1.6 1.15 1.6 1.15Pilot burner injector orifice diameter (mm) N/ATemperature settings 16 ~ 26ºC (selectable in 1 ºC increments)Ignition Continuous direct sparkPERFORMANCEPRS-150N PRS-150L PRS-250NPRS-250CNPRS-250LPRS-250CLAS4553 Efficiency Star rating 4.8Nominal gas consumption (MJ/h) Low 6 6 9 9High 15.0 15.0 25.0 25.0Electrical consumption (W)Standby 1 1 1 1Low 25 25 27 26High 41 44 57 58Note: Electrical consumption for central control connection 5 mA per heater @ 24 VAC ±25% (PRS-250CN &PRS-250CL commercial models only).DIMENSIONS & WEIGHTPRS-150 PRS-250 & PRS-250CHeight (mm) 610 610Width (mm) 760 760Depth (mm) 257 257Nominal flue diameter (internal/external mm) 50/75 50/75Packaged weight (kg) 31 31PRS-150 & PRS-250 PRS-250C31