MasterTempTM C E R T I F I E D ® ® POOL AND SPA HEATER 120/240 VAC NATURAL GAS/LP GAS I N S T A L L A T I O N a n d U S E R ’ S G U I D E MODELS Natural Propane 200K BTU/HR 460730 460731 250K BTU/HR 460732 460733 300K BTU/HR 460734 460735 400K BTU...