Weil-McLain CGA25SPDN manual 11a Troubleshooting - procedure, OCleaning boiler heating surfaces

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

10b Service & maintenance – annual start-up (cont.)

OCleaning boiler heating surfaces

The boiler contains ceramic fiber and fiberglass materi- als. Use care when handling these materials per instruc- tions on PAGE  of this manual. Failure to comply could result in severe personal injury.

1.Shut down boiler:

s &OLLOW h4O 4URNR /FFF 'ASA TO !PPLIANCEvvIN- structions on boiler and ,IGHTING OR /PERATINGA INSTRUCTIONS.

ss$O NOTODRAINABOILER UNLESS IT WILL BE EXPOSEDO to freezing temperatures. If using antifreeze in system, do not drain.

2.Follow shutdown procedure.

3.Remove venting system connection to boiler.

4.Remove top jacket panel. Turn back insulation.

 2EMOVE mUEUCOLLECTOR #LEANESEALANTLFROM ASSEMBLY and sections.

6. Remove radiation plates hanging between sections.

 2EMOVE BURNERSN FROM BASES "RUSHU ANDN VACUUM BURNERSNTO REMOVE ALLLDUST ANDNLINTN6ERIFY THAT ALLL burner ports are free of debris.

8.Place newspapers in base of boiler to collect soot.

 #LEANEBETWEENBSECTIONS WITH WIRE mUE BRUSH

2EMOVE NEWSPAPERPANDNSOOTO6ACUUM OR BRUSHUBASE and surrounding area.

11.Reinstall radiation plates.

12.Replace collector box/transition assembly. Seal with sealant. Obtain gas-tight seal to prevent flue gas spillage and carbon monoxide emissions, resulting in severe personal injury or death.

13.Replace insulation and jacket top panel.

14.Start up boiler following Section  of this manual and the boiler ,IGHTING OR /PERATINGAINSTRUCTIONS

(Section B or B). Excessive sooting indicates improper gas combustion. If found, check for proper combustion and make any necessary adjustments.

11a Troubleshooting — procedure

Label all wires prior to disconnection when servic- ing controls. Wiring errors can cause improper and dangerous operation.

.EVERVJUMPER BYPASS ROLLOUTLTHERMALRFUSE ELE- ment or any other device except for momentary testing as outlined in 4ROUBLESHOOTING #HARTS. Severe personal injury, death or substantial prop- erty damage can result.

"URNER ACCESS PANELNMUST BE IN POSITION DURING boiler operation to prevent momentary flame rollout on ignition of main flame. Severe per- sonal injury or substantial property damage will result.

3EEEPAGESG  THROUGHO  FOROADDITIONAL TROUBLE-

shooting information.

Before troubleshooting:

 (AVE THE FOLLOWING ITEMS

A 6OLTMETERMTHAT CAN CHECK  6!# AND  6!#

b.Microammeter with a minimum scale range of 0-25.

C #ONTINUITY CHECKER

d. U-tube manometer.

 #HECKEFORO6!#!MINIMUM 6!#!TO MAXIMUMIU6!# TOBOILER

3.Make sure thermostat is calling for heat and contacts (including appropriate zone controls)

ARERCLOSEDS#HECKEFORO 6!#!BETWEENWTHERMO- stat wire nuts and ground.

Part Number 550-101-009/0107