Crown Boiler CWD245, CWD083, CWD220, CWD060, CWD165, CWD138, CWD193 Air for Combustion and Ventilation

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TABLE 2: CLEARANCES FROM VENT PIPING TO COMBUSTIBLE CONSTRUCTION

 

 

 

MINIMUM CLEARANCE

 

 

 

TO COMBUSTIBLE

TYPE OF VENT PIPE

PIPE DIRECTION

ENCLOSURE

MATERIAL

HEAT FAB SAF-T VENT

 

AT LEAST ONE SIDE OPEN,

 

PROTECH FASNSEAL

VERTICAL OR

1”

COMBUSTIBLE MATERIAL ON A

PROTECH FASNSEAL W2

HORIZONTAL

 

MAXIMUM OF THREE SIDES

 

METAL-FAB CORR/GUARD

 

 

 

 

 

 

 

 

 

HEAT FAB SAF-T VENT

 

 

 

PROTECH FASNSEAL

HORIZONTAL OR VERTICAL

ENCLOSED ON ALL FOUR SIDES

8”

Z-FLEX Z-VENT III

WITH OFFSETS

 

 

 

METAL-FAB CORR/GUARD

 

 

 

HEAT FAB SAF-T VENT

 

 

 

PROTECH FASNSEAL

VERTICAL WITH NO OFFSETS

ENCLOSED ON ALL FOUR SIDES

6”

Z-FLEX Z-VENT III

 

 

 

 

METAL-FAB CORR/GUARD

 

 

 

PROTECH FASNSEAL W2

VERTICAL OR HORIZONTAL

ENCLOSED ON ALL FOUR SIDES

3”

HEAT FAB SAF-T VENT SC

VERTICAL OR HORIZONTAL

UNENCLOSED OR ENCLOSED ON

0”

ALL SIDES

 

 

 

“B” VENT CHASE USED AS PART OF

 

PER “B” VENT MANFACTUER’S

REFER TO “B” VENT

VERTICAL

MANUFACTURER’S

CROWN COAXIAL VENT SYSTEM*

INSTRUCTIONS

 

INSTRUCTIONS

 

 

 

* “B” Vent is used as a chase to carry combustion air in this system - never attempt to vent a CWD boiler using “B” vent

V Air for Combustion and Ventilation

Sufficient fresh air must be supplied for both combustion and ventilation. In general, combustion air is obtained in one of two ways:

•Direct Vent Installations – Combustion air is piped directly to the boiler inlet collar from the outdoors. This is also sometimes called a “sealed combustion” installation.

•Direct Exhaust Installations – Combustion air is obtained from the boiler room. In some cases, openings or duct work may be run from the outdoors to the boiler room, however the ducting is not connected directly to the boiler.

Air for ventilation is required to keep various boiler components from overheating and is always obtained from indoors. To ensure an adequate combustion and ventilation air supply, perform the following steps:

Step 1: Determine whether the boiler is to be installed in a building of unusually tight construction

A good definition of “unusually tight construction” is construction having all of the following features:

•Walls and ceilings exposed to outside atmosphere have a continuous water vapor retarder with a rating of 1 perm or less with openings gasketed and sealed.

•Weather stripping has been added on openable windows and doors.

•Caulking and sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

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Contents CWD Series Table of Contents Product Description II SpecificationsIII Before Installing IV Locating the BoilerClearances When Combustion AIR is Obtained from Boiler Room Air for Combustion and Ventilation Clearances from Vent Piping to Combustible ConstructionPage If Indoor Combustion Air is Used, Provide Air as Follows ALL AIR from Outside Using Ventilated Crawl Space and Attic ALL AIR from Outside Using Openings Into Boiler Room VI Venting Vent System DesignSummary of Horizontal Venting Options Page Horizontal Direct Exhaust Vent System Vent Options 4,5 Page Summary of Vertical Venting Options Vertical NON-COAXIAL Direct Vent System Vent Options 6 Summary of Vertical Coaxial Venting Options Page Permissible Vent Systems and Principle Vent Components Removing an Existing Boiler From a Common Chimney Vent FittingAIR Intake Fitting Horizontal Terminal Offsets Positioning Vent Terminal Under Overhangs Vent / Intake System Assembly USE of Condensate TrapsFAN Outlet Orifice Crown Coaxial Terminal Exploded View CORR/GUARD Connection to Vent Collar Vent III Connection to Vent Collar SAF-T Vent Ezseal Connection to Vent Collar Fasnseal Connection to Vent Collar FSA-SWDW3 Page Condensate TRAP/DRAIN Detail VII Gas Piping GAS Connection to BoilerViii System Piping Standard PipingPiping for Special Situations Basic Piping Bypass Piping Chiller Piping IX Wiring CB502 System Single Zone WiringCB502 Control System Single Zone Field Wiring CB502 System Wiring Variations CB502 Control System Sequence of OperationCB502 Control System Field Wiring for TWO Circulator Zones CB502 Control System Internal Ladder Diagram CB502 Control System Internal Connection Diagram R8285 Control System Single Zone Wiring R8285 Control System Wiring VariationsR8285 Control System Sequence of Operation R8285 Control System Single Zone Field Wiring R8285 Control System Zone Valve Field Wiring R8285 Control System Internal Connection Diagram Start-up and Checkout For Your Safety Read Before Operating Pilot Burner Flame GAS Valve XI Service and Maintenance Heat Exchanger Cleaning Procedure Service Notes Pressure Switch Settings Measuring Pressure Across Pressure Switch XII Troubleshooting PWR DHW Limit 24V GND on ign. module? Thermostat calls for heat Circulator Pilot Main Start Xiii Parts BLOCK, BASE, Flue Collector Components Page Burner Tray Components Page Jacket Components Page Common Controls & Trim Page Page Page Crown

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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