9)Remove the monometer and make sure that the inlet and manifold pressure tap screws are closed

10)Check the entire gas train for leaks. Fix any leaks found immediately.

11)Run the gas valve safety shut-down test. With the boiler firing, close the gas cock upstream of the boiler. The gas valve should close as soon as loss of flame is detected (within a few seconds of closing the gas cock). The boiler should then make one attempt to relight before going into a hard lockout. To reset the boiler, push the red reset button, rotate the heating system knob back to zero for a few seconds, then rotate the heating system knob fully clockwise.

12)Run a combustion test with the boiler operating at high fire. CO2 or O2 readings should be reasonably close to the values shown in Table 12.8. The CO level should be less than 50PPM. Consult the factory if the CO level is exceeded or if the CO2 or O2 are significantly different from the valves shown.

Table 12.8: High Fire Combustion Readings

Fuel

Approx. O2 (%)

Approx. CO2 (%)

Maximum CO (PPM)

Natural Gas

9.7

6.3

50

Propane

9.5

7.5

50

13)Verify that the flue system is tight and securely assembled in accordance with the Venting section in this manual.

14)Replace all jacket panels

15)After the boiler has operated for at least 30 minutes recheck the boiler and system for leaks. Repair ant leaks found before leaving the boiler in operation.

16)Test any external limits or other controls in accordance with the manufacturer’s instructions.

17)Verify that the boiler starts and stops in response to calls for heat from the heating thermostat/s. Make sure that the appropriate circulators also start and stop in response to the thermostats.

18)Set the Heating System Knob and the DHW knob for the desired target supply and DHW temperatures (see the Operation section for more information on how to do this).

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Crown Boiler MWC116ELT, MWC Series, MWC116ENL, MWC116ELL, MWC116ENT manual High Fire Combustion Readings

MWC116ENL, MWC116ELL, MWC116ELT, MWC116ENT, MWC Series specifications

Crown Boiler's MWC Series represents a commendable choice in the realm of residential and light commercial heating solutions. Specifically, models like the MWC116ENT, MWC116ELT, MWC116ELL, and MWC116ENL stand out due to their exceptional performance, reliability, and innovative features.

At the core of the MWC Series lies a robust cast iron boiler construction designed to withstand the test of time. This material not only provides durability but also enhances heat retention, thereby increasing the system's efficiency. Each model in this series is designed for natural gas or propane fuel types, ensuring flexibility based on availability and user preference.

A notable feature of the MWC116 models is the efficient heat exchanger, which enables rapid heating of water for both space heating and domestic hot water applications. With a heating capacity of 116,000 BTUs, these boilers deliver ample warmth for mid-sized homes or light commercial settings, making them a versatile option for various applications.

The MWC116ENT model is equipped with an energy-efficient electronic ignition system, which enhances reliability and efficiency. This technology reduces energy consumption, providing users with cost savings on their utility bills. Similarly, the MWC116ELT model boasts an integrated aquastat that regulates water temperature, ensuring optimal performance and comfort.

For those requiring increased venting options, the MWC116ELL model includes advanced horizontal venting capabilities, allowing for flexible installation in various environments. This feature aids in overcoming space limitations and facilitating optimal combustion conditions. The MWC116ENL, on the other hand, features a low NOx emissions configuration, making it an environmentally conscious choice for users concerned about their carbon footprint.

User-friendly controls are a characteristic hallmark of the MWC Series, enabling straightforward operation and easy adjustments. The boilers come equipped with a digital display that provides critical system information and diagnostics, streamlining maintenance efforts.

Overall, the Crown Boiler MWC Series, particularly models like the MWC116ENT, MWC116ELT, MWC116ELL, and MWC116ENL, offer an impressive blend of efficiency, flexibility, and advanced technology. These units are designed to meet contemporary heating demands while ensuring sustainable operation, making them a wise investment for comfort and performance in residential and light commercial applications alike. With reliable construction and innovative features, the MWC Series remains a top choice for those seeking effective heating solutions.