5)Assembly of Z-FlexZ-Vent III:

a) General Notes:

Non-expanded ends of SVE Series III piping sections may be cut using aviation snips or a 24 thread per inch hacksaw. File or sand the cut end smooth before assembling. Expanded ends may be cut to adapt the SVE series III to the vent collar or Crown coaxial terminal. See the following instructions.

Support horizontal piping sections at intervals of 48” or less.

Vertical venting systems must be supported by at least one Z-Flex fire stop. An additional vertical support is required after any offset and as required by the Z-Vent III installation instructions.

b)Start assembly of the vent system at the boiler. Remove the hose clamp shipped on the CWD vent collar. Bend the three hose clamp tabs on this collar outward slightly.

c)Clean the exterior of the male end of the first piece of pipe and the inside of the vent collar on the boiler. Remove dirt, grease, and moisture from the surfaces to be sealed. Dry surfaces or allow to dry thoroughly.

d)On the male end of the pipe, apply a ¼” wide bead of high temperature silicone approximately ½ inch from the male end of the pipe. Apply ¼” beads of silicone along both sides of the longitudinal seam (Fig. 20).

e)Insert the male end of the pipe into the boiler vent collar until it bottoms out.

f)Apply an additional bead of silicone over the outside of the joint and smooth out. Also apply silicone over the seams in the collar (Fig 20).

g)Replace and tighten the clamp on the vent collar.

h)The female end of each Z-Vent III component has a silicone sealing gasket. Examine all vent components to insure that the gasket integrity has remained during shipping. Gaskets must be in the proper position or flue gas could leak resulting in carbon monoxide poisoning.

i)Align the second piece of pipe with the first and push them together as far as they will go, but not less than 1 3/4”.

j)Tighten gear clamp to a minimum torque of 40 in-lbs and a maximum of 50 in-lbs.

k)Repeat Steps (h) – (j) for the remaining Z-Vent III components. If a termination elbow is used, use this procedure to complete the vent system.

l)If a termination elbow or tee is used, a locking band or gear clamp must be used at either side of the wall penetration to prevent shifting of the vent system in and out of the wall. This applies to both combustible and non-combustible walls.

m)To join Z-Vent III to a Crown coaxial terminal, a male end must be present at the end of the piping to be joined to the terminal. It will therefore be necessary to cut off the expanded end of the pipe before it can be joined to the terminal. This male end of the pipe must be inserted into the terminal connection with at least a 1” overlap. It may be necessary to crimp the end of the vent pipe before it can be inserted into the terminal. Apply silicone to the male end of the pipe as in

(d) above, insert into the terminal, and apply an additional bead of silicone over the outside of the joint. Smooth out the excess silicone and tighten the hose clamp on the terminal.

n)Allow the silicone to cure per the silicone manufacturer’s instructions before operating the boiler.

FIGURE 20: Z-VENT III CONNECTION TO VENT COLLAR

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Crown Boiler CWD138, CWD083, CWD220, CWD060, CWD165, CWD193, CWD245, CWD110 Vent III Connection to Vent Collar

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.