Venting of Diaphragm Gas Components, General

*Low NOx units not available for propane.

Table G: Maximum Equivalent Pipe Length

CAUTION: The boiler and its manual shut-off valve must be disconnected from the gas supply during any pressure testing of that system at test pressures in excess of 1/2 PSIG. Dissipate test pressure in the gas supply line before reconnecting the boiler and its manual shut-off valve to gas supply line.

FAILURE TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE. OVER PRESSURED GAS VALVES ARE NOT COVERED BY WARRANTY. The boiler and its gas connections shall be leak tested before placing the appliance in operation. Use soapy water for leak test do NOT use open flame.

Venting of Diaphragm Gas

Components

Gas valves that are equipped with a gas bleed must be vented to the outdoors as required by the National Fuel Gas Code. Under NO circumstances shall bleed lines terminate in the gas utilization equipment flue or exhaust system.

Bleed Line

Connection

A minimum of 7" W.C. and a maximum of 10.5" W.C. upstream pressure, under load and no-load condi- tions, must be provided for natural gas, or a minimum of 12" W.C. and a maximum of 13" for propane.

Vent Line Connection

Gas Pressure Regulator

The gas pressure regulator is preset nominally at 4" W.C. for natural gas, and 11" W.C. for propane. Between the gas valve and the burners is a 1/8" pipe plug. The pressure at this point, taken with a manome- ter, should be about 3.7" W.C. for natural gas and 10.5" W.C. for propane. Low NOx models should be 3.9" W.C., natural gas only. If an adjustment is need- ed, turn adjustment screw clockwise to increase pressure, or counter-clockwise to decrease pressure.

For boilers with mechanical modulation gas valves (Type H1 and H5) or two-stage gas valves (Type H3), the gas pressure regulator is preset and sealed, and not field adjustable. Pressure tap is provided on the outlet side of the gas valve for measurement of gas pressure in the manifold.

Fig. 23: Bleed Line Connection Location

General

Boiler should be located so that any water leaks will not cause damage to any adjacent areas or structures. See piping diagrams for proper water connections for the type of boiler and system.

Pump Selection

In order to ensure proper hydraulics in your hydronic heating system, adequate pump size must be select- ed. We recommend that the pump be sized for 20°F Delta T whenever possible. (Delta T is the temperature

133-4001 specifications

Raypak 133-4001 is a premier heating solution designed for both residential and commercial applications, known for its efficiency and reliability. This high-performance water heater is specifically engineered to meet the demanding requirements of hot water supply while ensuring energy conservation and user convenience.

One of the standout features of the Raypak 133-4001 is its robust construction. Made from high-quality materials, including a corrosion-resistant heat exchanger and durable casing, this unit is designed to withstand harsh environmental conditions. Its compact design allows for easy installation in various locations, making it an ideal choice for homeowners and businesses alike.

The unit operates on natural gas or LP gas, providing versatility in fuel choice. With a heating capacity of 199,000 BTU/hr, it delivers an impressive flow rate that ensures a steady supply of hot water, even during peak demand periods. This capacity makes it suitable for a wide range of applications, from residential water heating to larger facilities requiring substantial hot water output.

Raypak’s advanced technology set ensures that the 133-4001 operates at maximum efficiency. It utilizes a modulating power burner that adjusts the flame based on demand, optimizing fuel consumption. This feature not only helps in reducing energy bills but also minimizes the carbon footprint, making it an environmentally friendly option.

Another notable characteristic of the Raypak 133-4001 is its digital control system. The intuitive interface allows for precise temperature adjustments and easy monitoring of the heating process. Users can set the desired water temperature, and the system will maintain it consistently, ensuring comfort and reducing the risk of scalding.

Safety is a paramount consideration in the design of the 133-4001. It features a built-in high-limit switch, pressure relief valve, and multiple safety sensors to prevent overheating and potential hazards. These safety features provide peace of mind for homeowners and facility managers, knowing that their hot water system is reliable and secure.

In conclusion, Raypak 133-4001 combines advanced technology, robust construction, and user-friendly features, making it a highly effective water heating solution. Its efficiency and dependability cater to a variety of hot water needs, positioning it as a top choice for both residential and commercial use. Whether for a single-family home or a large facility, the Raypak 133-4001 is built to deliver exceptional performance with every use.

Raypak 133-4001 manual Venting of Diaphragm Gas Components, Gas Pressure Regulator, General

Models: 133-4001