Hayward HDF400 - Page 5

5ONLYUSEGENUINEHAYWARDREPLACEMENTPARTS
51300803801REVB
Model GasInput
NaturalorPropane
Minimum
WaterFlow
Thermal
Efficiency
Heater
Width
Heater
Weight
 Btu/hr GPM % in. lbs.
HDF400 400,000 30 84 21 135
Table 1: SPECIFICATIONS
FEATURES:
 120or240VAC,60Hz,Singlephasepower,5.5Amaximumcurrent
 Pre‐mixcombusonwithsiliconnitridehotsurfaceignion
 Cupronickelheatexchangertubesstandard
 Integralwaterbypasstomaintaincorrectwaterflowthroughtheheatexchanger.Maximumwaterflowthrough
theunitis125GPM.
GAS REQUIREMENTS
OPERATINGPRESSURES NaturalGas PropaneGas
GasManifoldPressure*[in.wc] ‐0.1to‐0.3
GasInletPressure,Minimum[in.wc] 4.0 4.0
GasInletPressure,Maximum[in.wc] 14.0 14.0
Gas/AirOrificeServiceSKU HDXFMXN400 HDXFMXP400
*Negavepressureregulaon,rangeshownforallowableheangvaluevariaon