11)Assembly of Vertical Coaxial Vent System Using Crown #500005 Coaxial Vent Kit (Vent Option #11)

a)Start by installing the “B” vent piping. Install and assemble this piping in accordance with the “B” vent manufacturer’s instructions. Seal the joints between sections of “B” vent with GE RTV 106 or Dow 732 RTV sealant. Consult the “B” vent manufacturer’s instructions for the clearance to combustibles (typically 1”) as well as for fire stop and support requirements.

Install a 5” “B” vent Tee on the bottom of the run of “B” vent as shown in Figure 12. Extend the run of “B” vent far enough above the roof so that the bottom of the air intake hood will be at least one foot above the normal snow line that can be expected on the roof. Seal the roof penetration with a “B” vent roof flashing and storm collar in accordance with the “B” vent manufacturer’s instructions.

b)Assemble the vent piping that is to be run inside the “B” vent and drop it through the “B” vent. Join and seal the vent piping in accordance with the instructions 4, 5,6 or 8 above. Use the longest sections of vent piping possible so as to minimize the number of joints inside the “B” vent. Temporarily support the vertical section of vent pipe from underneath so that the top of the vent pipe is at the correct height (Figure 12).

c)Slip the Crown concentric air intake hood over the vent pipe and seat it on the “B” vent. Secure the concentric air intake hood to the “B” vent with at least three sheet metal screws. Install a storm collar compatible with the vent system over the vent pipe. Secure and seal it in accordance with the vent manufacturer’s instructions. Note: this collar provides a watertight seal between the vent piping and the concentric air intake hood and also supports the vent piping. Once the storm collar is installed, remove the temporary vent support. Install a compatible rain cap on the top of the vent system (Table 4).

d)Slip the Crown vent support over the vent pipe protruding from the bottom of the “B” vent. Orient the vent support so that it will be possible to tighten the gear clamp by reaching through the side opening in the “B” vent Tee (Figure 23). Attach the vent support to the “B” vent Tee with at least three sheet metal screws. Tighten the gear clamp. Seal all joints in between the vent support, the vent pipe, and the “B” vent.

e)Install the vent piping between the boiler and the vertical section of “B” vent already installed. Observe the clearance and support requirements in the installation manual.

f)Install a 5 x 4 single wall reducer in the side connection of the “B” vent Tee. Install 4” galvanized or PVC piping between this reducer and the combustion air intake on the boiler. Seal all joints in the air intake piping.

12)Condensate Traps:

a)Trap should have the basic configuration shown in Figure 24. All tubing is 3/8 I.D.

b)All drain tubing must be acid resistant.

c)At least the first 6 inches of tubing must be silicone with a 300F temperature rating.

d)Pipe condensate to a drain or other suitable location. Make sure that condensate disposal method is in accordance with local regulations. Ensure condensate is not subjected to freezing temperatures.

13)Rodent Screens:

a)A rodent screen is provided with the CWD boiler. On direct exhaust boilers, this screen is installed in the air inlet collar on the boiler and held in place with screws or RTV sealant.

b)The Crown coaxial terminal has integral inlet and exhaust rodent screens. The rodent screen supplied with the boiler is not used when the boiler is installed with the coaxial terminal.

c)In horizontal direct vent installations using termination elbows or tees, the rodent screen provided is mounted in the air inlet elbow. A second screen is required for the exhaust elbow. This second screen can be any one of the following items:

•A rodent screen provided by the vent system manufacturer.

•A second Crown rodent screen (Crown #60-601).

•A rodent screen made of stainless steel screen having a ½” (2 x 2) or greater mesh.

d)In vertical direct vent or direct exhaust systems, no rodent screen is required on the exhaust terminal. The rodent screen is installed either on the 180-degree inlet elbow (direct vent installations) or on the boiler inlet collar (direct exhaust installations).

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Crown Boiler CWD083, CWD220, CWD060, CWD165, CWD138, CWD193, CWD245, CWD110 installation instructions
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CWD193, CWD165, CWD245, CWD220, CWD110 specifications

Crown Boiler Company is well-known for its commitment to quality and performance in the heating industry. Among its extensive range of products, the Crown Boiler CWD series stands out for its reliability and efficiency. This series includes models CWD060, CWD083, CWD110, CWD138, and CWD220, each designed to meet diverse heating needs in residential and commercial applications.

One of the main features of the CWD series is its durable construction. Made with high-quality materials, these boilers are built to withstand the test of time. The cast iron heat exchanger delivers exceptional heat retention and efficiency, ensuring optimal performance even in demanding conditions. Additionally, the CWD models are equipped with a reliable standing pilot ignition system, which enhances user safety and operational reliability.

Another important characteristic of the Crown CWD series is its versatility in fuel options. These boilers can operate on either natural gas or propane, providing flexibility to homeowners and businesses depending on their preferred energy source. The ability to easily switch fuels makes these units adaptable to various heating applications, maximizing convenience for users.

Efficiency is a cornerstone of the Crown Boiler CWD series. With an AFUE rating of up to 85%, these boilers deliver substantial cost savings over the heating season. Their efficient operation not only lowers energy bills but also contributes to a reduced environmental impact, which is increasingly important in today’s energy-conscious world.

Crown’s innovative design features also include a low water cut-off and a built-in draft hood. The low water cut-off ensures safe operation by preventing the boiler from running dry, while the draft hood allows for optimal venting capabilities, minimizing the risk of dangerous flue gas build-up.

Maintenance is straightforward with the CWD series, thanks to its easy-access design. Routine service and inspections can be performed with minimal disruption, ensuring that the units maintain peak performance over their lifespan.

The Crown Boiler CWD060, CWD083, CWD110, CWD138, and CWD220 models exemplify the brand’s dedication to delivering high-quality heating solutions. With their impressive efficiency ratings, durable construction, versatile fuel options, and user-friendly features, these boilers represent a smart investment for anyone looking to enhance heating reliability and comfort in their space.
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