Pilot

Y

Main

Y

 

burners

 

light?

 

 

 

light?

 

 

 

 

N

 

N

 

END

Do burners shut

Y

down before

 

gauge temp

 

exceeds high limit

 

setting +15F?

 

N

 

24 volts

between 24V Y

and 24V (GND) on

ign. module?

N

See "Intermittent

Ignition System

Troubleshooting

Chart" on page 64.

*Defective L4080D

*Sensing bulb not bottomed out in well

Do burner,

circulator and Y fan shut down at

end of call for

heat?

N

Minimum pressure at switch called in

Table 7 present N across switch?

Y

*Tubes reversed on pressure switch

*Leak in tubes at pressure switch connection *Loose pressure switch harness connection

 

Does boiler shut

N

 

down when t'stat

 

 

 

 

wire is removed from

 

 

 

 

 

 

terminal R on

 

 

 

 

R8285?

 

 

 

 

Y

 

 

 

 

 

 

 

 

* Blockage in venting system

 

 

 

 

 

 

 

 

 

 

 

 

* Internal boiler wiring

* Vent system not installed in

 

 

accordance with installation manual

 

 

problem, consult

* Excessive silicone on I.D. of vent

 

 

Crown representative

system joints

 

 

 

 

 

 

 

 

 

 

*Blockage, condensate or leakage in vacuum switch tubing

*Improperly sealed flue collector

* Damaged or missing fan gasket

 

* Defective fan

* T'stat or zone system

* Wind at horizontal vent terminal in

excess of 40 mph

calling for heat

* T'stat wires shorted

 

 

 

TROUBLESHOOTING CHART FOR BOILERS WITH R8285 CONTROL SYSTEM - PAGE 2 OF 2

63

Page 65
Image 65
Crown Boiler CWD220, CWD083, CWD060, CWD165, CWD138, CWD193, CWD245, CWD110 installation instructions Pilot Main

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.