XIII Operation

Lamp 1

DHW

Heating System Knob

 

 

Flame Reset Button

Lamp 2

Thermostat

Lamp 3

(Combi Only)

Flame Lockout Lamp

 

 

 

Figure 13.1: Control Panel

Figure 13.1 shows the control panel for the MWC boiler. The purpose of the adjustments and lamps on this panel are as follows:

1)Lamps 1, 2, 3 - These lamps show the status of the boiler by lighting and/or flashing in various combinations. Table 13.4 shows lamp codes that will be seen during normal operation. Lamp codes indicating a problem are shown in Section XV.

2)Heating System Knob - A detail of the heating system knob is shown in Figure 13.2. This knob has three discrete settings:

•Off - Boiler will not respond to a call for heat or domestic hot water (DHW). The boiler will fire, if necessary, to protect itself from freezing. In addition, it will operate the circulator and the 3-way valve for a few seconds every 24 hours to prevent these devices from sticking.

The “Off” setting is also used to reset the boiler after it experiences a lockout. To reset the boiler, rotate the Heating System Knob to “Off” for a few seconds and then return it to its original position (if the lockout is due to a loss of flame, it will ALSO be necessary push the Flame Reset Button).

•Summer Operation (Combi Only) - Boiler will not respond to a call for heat from the heating thermostat, but will respond to a call for DHW.

•Target Supply Temperature Setting - When the Heating System Knob is rotated clockwise to any position from “Off” the boiler will respond to a call for heat. During the call for heat, the boiler will attempt to maintain a “target” supply temperature. This target supply temperature can bet set anywhere between 100F and 178F (Figure 13.2) .

3)DHW Thermostat (Combi Boilers Only) - This knob determines the target domestic hot water (DHW) temperature. It is adjustable from 95F to 131F (Figure 13.3). If a call for heat is present at the same time as a call for DHW, the call for DHW has priority; no heat will be delivered to the heating system until the call for DHW is satisfied.

4)Flame Reset Button - This button is used to reset the boiler in the event that it locks out due to failure to establish a flame. In addition to pressing this button, it is also necessary to rotate the Heating System Knob back to “0” for a few seconds to reset the boiler.

5)Flame Lockout Lamp - Illuminates if the boiler locks out due to failure to establish a flame.

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Crown Boiler MWC Series, MWC116ENL, MWC116ELL, MWC116ENT, MWC116ELT manual Xiii Operation, Dhw
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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.
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