8.If burner does not light on first trial. It will retry, up to three times.

9.Main burner ignition: Check upper manifold gas pressure.

10.If the pressure readings differ by more than ± 0.1 in. WC, remove screw cover from the gas pres- sure regulator on the FlexGas fuel train and adjust until upper manifold pressure is nominally 2.2 ± 0.1 in. WC (manifold pressure 1.3 ± 0.1 in. WC). If a flue gas analyzer is used, the CO2 on propane

should be 9.0-10.0% and CO should be less than 150 ppm.

CAUTION: Once the natural gas pressures are established, DO NOT adjust the Hi Delta gas valves to attain the required propane pressures. Adjustments must be made to the FlexGas propane regulator.

11. Replace the screw cover.

CAUTION: Special manifold and air settings may be required. Verify rating plate and blower housing.

12.Turn the gas selector key on the FlexGas control panel to “OFF”.

13.Close the manual valve on the propane gas supply and open the manual valve on the natural gas supply. Turn the gas selector key on the FlexGas control clockwise to “NAT”. The heater is now ready for operation.

FlexGas Operation - Changing Fuels

From NAT to PRO:

1.Turn the boiler off (power switch on front control panel).

2.Turn FlexGas key to “OFF”.

3.Close NAT manual valve.

4.Open PRO manual valve.

5.Turn FlexGas key to “PRO”.

6.Turn the boiler on.

NOTE: Reset Low Gas Pressure Switch (when equipped) if necessary. Refer to Fig. 2 for location.

From PRO to NAT:

1.Turn the boiler off (power switch on front control panel).

2.Turn FlexGas key to “OFF”.

3.Close PRO manual valve.

4.Open NAT manual valve.

5.Turn FlexGas key to “NAT”.

6.Turn the boiler on.

Safety Inspection

1.Check all thermostats and high limit settings.

2.During the following safety checks leave ma- nometers hooked up, check and record.0

3.If other gas-fired appliances in the room are on the same gas main, check all pressures on the Hi Delta with all other equipment running.

4.Check thermostats for ON-OFF operation.

5.Check high limits for ON-OFF operation.

6.While in operation, check flow switch operation.

7.Check the low gas pressure switch. (For proper adjustment, use the attached manometers, if available, to set pressure. The scales on the switch are approximate only.) Low gas pressure switch (if equipped) must be set at 5.0 in. WC for natural gas.

Follow-Up

Safety checks must be recorded as performed.

Turn heater on. After main burner ignition:

1.Check manometer for proper reading.

2.Cycle heater several times and re-check readings.

3.Turn unit off.

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Raypak 302BD-2342BD FlexGas Operation Changing Fuels, Safety Inspection, Follow-Up, From NAT to PRO, From PRO to NAT
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302BD-2342BD specifications

The Raypak 302BD-2342BD is a standout in the realm of commercial water heating, designed to meet the needs of various applications while ensuring efficiency and reliability. Known for its robust construction and state-of-the-art technology, this model is a preferred choice for both residential and commercial users.

One of the key features of the Raypak 302BD-2342BD is its dual thermostat functionality. This feature allows for precise temperature control, making it suitable for diverse heating requirements. With a maximum output of 302,000 BTUs, this unit can handle large volumes of water, making it ideal for swimming pools, spas, and other high-demand situations.

The Raypak 302BD-2342BD is also equipped with a highly efficient heat exchanger. Constructed from copper, the heat exchanger provides superior thermal conductivity, allowing for faster heating and improved energy efficiency. This contributes to reduced operating costs, a crucial consideration for commercial applications where budget constraints are paramount.

Another notable characteristic of this model is its compact design. The unit is engineered for easy installation, taking up minimal space while still delivering powerful performance. This aspect is particularly advantageous in commercial settings where space can be a significant limiting factor.

Safety and user-friendly operation are prioritized in the design of the Raypak 302BD-2342BD. It features an integrated digital display, providing users with real-time information about the unit's performance and conditions. Furthermore, the model includes built-in diagnostic features, allowing for easy troubleshooting and maintenance.

The Raypak 302BD-2342BD also boasts advanced flame sensing technology, ensuring a secure and reliable ignition process. This feature enhances safety while promoting efficiency by optimizing combustion levels.

Lastly, the unit is compatible with various fuel types, including natural gas and propane. This versatility ensures that users can select the most suitable fuel source based on availability and cost considerations.

In summary, the Raypak 302BD-2342BD represents the pinnacle of modern water heating technology, boasting features such as dual thermostats, a high-efficiency heat exchanger, a compact design, and advanced safety measures. Its combination of power, efficiency, and versatility positions it as a leader in the market, meeting the heating needs of both residential and commercial users alike.
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