Installation Manual - Unical Lattner Condensing Hot Water Boilers

Technical features and dimensions2.5 - PERFORMANCE DATAFor information regarding the adjustment of: INJECTORS - BURNER PRESSURES – DIAPHRAGMS – OUTPUTS – GAS CONSUMPTIONS please refer to theparagraph ADAPTMENT TO THE USE OF OTHER GASES.ALKON 90Minimum heat inputNominal heat input (low)(*) Nominal heat input (high) (reduction for Altitude)Nominal heat output (HT)Minimum heat output (HT)Efficiency at full load (100%)Efficiency at min loadNominal heat output in condensing modeMinimum heat output in condensing modeEfficiency at nominal load in condensing modeEfficiency at min load in condensing modeCombustion efficiency at nominal loadCombustion efficiency at min loadStand-by lossesFlue gas temperature (Flue gas temp - room temp)Air excess λCondensate production max[Btu/hr (kW)][Btu/hr (kW)][Btu/hr (kW)][Btu/hr (kW)][Btu/hr (kW)][%][%][Btu/hr (kW)][Btu/hr (kW)][%][%][%][%][%][°F (°C)][%][lb/hr (kg/hr)]83,300341,000307,000298,60072,00087.5586.44298,60072,00093.6698.397.998.40.90101.325.5030.36(24,41)(99,94)(89,97)(87,51)(21,10)(87,51)(21,10)(38,5)(13,8)Boiler categoryMinimum water flow rate in CH circuit Δt 36 °F (20 °C)Min. pressure in CH circuitMax. pressure in CH circuitMin. dynamic gas pressure (natural gas)Water content in primary circuitMaximum operating temperatureMinimum operating temperature[gal/min (l/min)][psi (kPa)][psi (kPa)][in wc (kPa)][gal (L)][°F (°C)][°F (°C)]IV4.07.3923.5117686(15,12)(50)(634)(0,87)(3,9)(80)(30)Electrical supply[V-Hz]120 - 60Net weightGross weight[lb (kg)][lb (kg)]298312(135)(141,5)Max dynamic gas pressure A (natural)Nominal dynamic gas pressure A (natural)Min. dynamic gas pressure A (natural)[in wc (kPa)][in wc (kPa)][in wc (kPa)]10.57.03.5(2.61)(1.74)(0.87)Max dynamic gas pressure E (Propan HD)Nominal dynamic gas pressure E (Propan HD)Min. dynamic gas pressure E (Propan HD)[in wc (kPa)][in wc (kPa)][in wc (kPa)]13.011.08.0(3.23)(2.74)(1.99)(*) For adjustments, refer to section 3.26 and 3.2712