Table 7.5: Vent/ Air Intake Fitting Equivalent Length

VENT FITTING

EQUIVALENT LENGTH (ft)

 

 

60/100mm 90° CONCENTRIC ELBOW

4.5

 

 

60/100mm 45° CONCENTRIC ELBOW

4.0

 

 

80/125mm 90° CONCENTRIC ELBOW

8.5

 

 

80/125mm 90° SWEEP CONCENTRIC ELBOW

5.5

 

 

80/125mm 45° CONCENTRIC ELBOW

3.0

 

 

80/125mm 90° CONCENTRIC SUPPORT ELBOW

8.5

 

 

6)Permitted Terminals for Vertical Venting - Use Crown PN 230532 with the appropriate flashing (Table 7.3b)

7)Vertical Vent Terminal Locations (Vent Option 5) - Observe the following limitations on the location of all vertical vent terminals (see Figure 7.7):

•The top of the vent pipe must be at least 2 feet above any object located within 10 feet.

•The bottom of the air inlet terminal must be at least 12” above the normal snow accumulation that can be expected on the roof. The terminal used in Vent Option #5 has a fixed distance above the storm collar of 19”. If a greater distance is needed to provide the clearance above the snow line, build a chase on the roof and mount the vertical terminal on top of the chase.

8)Wall thimbles – Concentric vent has a “zero” clearance to combustibles and therefore does not require the use of wall thimbles.

9)Pitch of Horizontal Piping - Pitch all horizontal piping so that any condensate which forms in the piping will run towards the boiler. Pitch Crown horizontal concentric venting 5/8” per foot

10)Supporting Pipe - Vertical and horizontal sections of pipe must be properly supported. Support Crown concentric venting near the female end of each straight section of pipe. Exception: Vertical runs of concentric pipe in an unused chimney (Figure 7.36) need only be supported at the terminal and at the base of the run.

Table 7.6: Summary Of Vertical Venting Options

VENT OPTION #

5

6

 

 

 

CLASSIFICATION USED IN THIS

VERTICAL

RESERVED FOR

MANUAL

CONCENTRIC

FUTURE USE

 

 

 

ILLUSTRATED IN FIGURE

7.7

 

 

 

 

VENT PIPE PENETRATION

ROOF

 

THROUGH STRUCTURE

 

 

 

 

 

 

VENT PIPE SIZE

80/125mm

 

CONCENTRIC

 

 

 

 

 

 

INLET AIR ORIFICE SIZE

82mm

 

MAX. VENT LENGTH

27ft - 10in

 

 

 

 

MIN. VENT LENGTH

6in

 

 

 

 

 

CROWN #230532

 

VENT TERMINAL

CONCENTRIC

 

TERMINAL (TABLE

 

 

 

 

7.3b)

 

 

 

 

 

CROWN 80/125 mm

 

VENT MATERIAL

VENT COMPONENTS

 

SHOWN IN TABLE

 

 

 

 

7.3b

 

 

 

 

17

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Crown Boiler MWC116ELT, MWC Series, MWC116ENL, MWC116ELL, MWC116ENT manual Vent/ Air Intake Fitting Equivalent Length
Page 18 Page 20

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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