Raypak P-1178 Commercial Heater 1.18M BTU Natural Gas (outdoor model)

Features:

• Rugged All-Brass Headers
  Resist corrosion, and are easily removed for inspection or service. AB 1953 low-lead complaint.
• Cupro-nickel Finned-tube
  Single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes. Cupro-nickel tubes provide superior chemical resistance over copper for tough commercial installations.
  
• On-off Operation.
  
• Models P-926-1287 are certified to the ANSI Z21.56 standard. Models WHP-1414-1758 are certified to the ANSI Z21.10.3 standard.
  
• Corrosion Resistant Steel
  Fittings are brushgalvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.
• 24-Volt Controls
  Are totally enclosed for protection. Cover is easily removed for inspection and service.
• Floating Return Header
  Immunizes heat exchanger to thermal shock.
• Tube Sheet and “O” Ring Construction
  Eliminates the repair and maintenance problems associated with rolling tubes directly into a casting.
• Interlocking Refractory Panels
  With sealed corners reduce radiation losses.
• Stainless Steel Burners
  Maintain precise combustion at all firing rates, burn quietly and won’t clog or corrode.
• Slide-out Burner Tray
  Allows easy inspection and service.
• Spark-to-Pilot Ignition
  The most dependable ignition method available.
• Available for natural gas or propane.
• More so than any other type of finned-tube unit, pool heaters require some form of protection against the damaging effects of too-cold water entering the heat exchanger. Since pool heaters operate at a temperature range below this point, some form of protection is always needed.
  Bypass Options:
  
  • Unitherm Governor (std on 926-1178)
    This provides a temperature-activated valve inside the header which varies flow through the heat exchanger. No pump on the heater. Flow comes from an external source.
    
  • H-Style Bypass (std on 1287-1758)
    This provides a larger manually-set bypass to bring heated water back to the inlet, raising the temp inside the heat exchanger. For size 1287, H-bypass is horizontal with rear-mounted pump. For sizes 1414-1758, H-bypass is vertical with front-mounted pump.
    
  • None (field-supplied)
    Protection provided by others and mounted in the field.
  • Cold-Water Run (CWR)
    This approach uses digital controls to vary the performance of a variable-speed pump which governs how much heated water is returned to the inlet. Performance is adjusted in real time.