START

Thermostat calls for heat

N

Circulator

Y

Induced

 

draft fan

start?

 

 

start?

 

 

N

 

 

 

 

N

24volts across R

Y

and C on R8285

 

 

fan center?

 

 

 

YWait 30 seconds

(prepurge)

Unplug fan and check for 120 volts across black and white connections on female half of plug.

120 volts across

Yblack and white

transformer

primary leads on back of R8285 ?

 

 

Y

120 volts

N

24 volts across

 

present?

 

 

 

G and C on

 

 

 

 

R8285 fan

 

 

N

 

 

 

center?

 

 

 

 

 

 

 

 

 

 

 

 

 

N

* Power off

* Blown fuse or

tripped breaker

* Miswired or

loose electrical

connection in

120 volt line

*Loose connection in

t'stat or zone valve end switch wiring

*Defective t'stat or zone valve end switch

*T'stat or zone system miswired-consult zone valve or t'stat manufacturer's instructions.

Y

*Loose connection at fan plug or fan capacitor

*Defective capacitor

*Defective fan

Reconnect fan

24 volts

Npresent across

yellow and

purple leads on

R8222?

* Defective

transformer.

Replace R8285.

* Defective relay on

R8285

* Relay not fully seated

in socket

* Loose connection in

circulator wiring

N

120 volts across

 

 

circulator

 

 

 

 

connections?

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Defective

 

 

 

circulator

 

 

 

 

 

 

24 volts present

across yellow and orange connections on R8222?

Y

*Kinked or blocked pressure switch tubing

*Defective pressure switch

NY

*Defective

R8222 relay

*Socket not fully seated on relay

*Boiler off on

high limit

*Defective L4080D

TROUBLESHOOTING CHART FOR BOILERS WITH R8285 CONTROL SYSTEM - PAGE 1 OF 2

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Image 64
Crown Boiler CWD083, CWD220, CWD060, CWD165, CWD138, CWD193, CWD245, CWD110 Thermostat calls for heat Circulator

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.