A minimum of 7" WC and a maximum of 10.5" WC upstream pressure under load, and no load conditions must be provided for natural gas or a minimum of 11" WC and a maximum of 13" for propane.

* Models 181, 261, 331, and 401 are Low NOx units and are not available in propane.

GAS PRESSURE REGULATOR

The gas pressure regulator located in the gas valve is preset nominally at 4" WC for natural gas, and 11" WC for propane. Between the gas valve and the burners is a 1/8" pipe plug. The pressure at this point, taken with a manometer, should be about 3.7" WC natural gas and 10.5" WC propane. Models 181, 261, 331, and 401 should be 3.9 wc natural gas. If an adjustment is needed, turn adjustment screw clockwise to increase pressure, or counter-clockwise to decrease pressure.

VENTING OF DIAPHRAGM GAS COMPONENTS

Gas train components that have diaphragms in their construction are supplied with a bleed line connection that must be connected to the outside atmosphere as required by the National Fuel Gas Code. Under NO circumstances shall bleed lines terminate in the gas utilization equipment flue or exhaust system.

Fig # 8185.2

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Raypak 0133-4001 manual GAS Pressure Regulator, Venting of Diaphragm GAS Components

0133-4001 specifications

Raypak 0133-4001 is a high-performance pool and spa heater designed for efficient and reliable heating. As part of Raypak's commitment to quality and innovation, this model combines advanced technologies and features to ensure optimal heating and energy efficiency.

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In conclusion, the Raypak 0133-4001 is an excellent choice for those seeking a reliable, efficient, and user-friendly pool and spa heater. With its robust construction, powerful heating capabilities, advanced digital controls, and emphasis on energy efficiency, it stands out as a premier option in the market. Whether for residential or commercial use, the Raypak 0133-4001 is engineered to enhance the enjoyment and comfort of your swimming experience.