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MODEL IDENTIFICATION
The model identification number and boiler serial number are found on the boiler data plate located on the left
inside jacket of the boiler. The model number will have the form H4 0500A ADB or similar depending on the
boiler size and configuration. The first character of the model number identifies application (H = Hydronic
Heating System, W = Hot Water Supply System, P = Pool Application). The second character identifies the
firing mode (4 = On-Off firing). The next four places identify the input of the boiler in 1,000s of BTUH 0500 =
500,000 BTUH). The remaining suffix identifies the control, ignition, and construction configuration. The last
three characters of the model number identifies the model type (ADB = Advanced Design Boiler).
RATINGS AND CERTIFICATION
All Raypak boilers are National Board Approved, design certified and tested under the applicable American
National Standard/CSA Standard for USA and Canada. Each boiler is constructed in accordance with Section IV
of the American Society of Mechanical Engineers (ASME) Boiler Pressure Vessel Code and bears the ASME
stamp. This boiler complies with the latest edition of ASHRAE 90.1 Standard.
Altering any RAYPAK pressure vessel by installing replacement heat-exchangers, tube bundle headers, or any
other ASME part not manufactured and/or approved by RAYPAK will instantly void the ASME, and agency
listings and any RAYPAK warranty on the vessel. Altering the ASME, agency ratings of the vessel also violates
national, state, and local approval codes. The terms "boiler" and "heater" are used interchangeably in this
manual.
No derate is required for altitudes up to 7000 feet. Rated inputs, at sea level settings, are suitable for up to 5000
feet elevation. At altitudes between 5000 and 7000 feet, rated inputs are achieved with pressure settings
adjustment. Consult the factory for installations at altitudes in excess of 7000 feet.
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