Weil-McLain CGA25SPDN Boiler User Manual


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Part Number 550-101-009/0107

GOLD CGa Gas-Fired Water Boiler — Boiler Manual
O Cleaning boiler heating surfaces
1. Shut down boiler:
s &OLLOWh
4O4URN/FF'ASTO!PPLIANCEvIN-
structions on boiler and ,IGHTINGOR/PERATING
INSTRUCTIONS
.
s $ONOTDRAINBOILERUNLESSITWILLBEEXPOSED
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mUECOLLECTOR#LEANSEALANTFROMASSEMBLY
and sections.
6. Remove radiation plates hanging between sections.
 2EMOVEBURNERSFROMBASE"RUSHANDVACUUM
BURNERSTOREMOVEALLDUSTANDLINT6ERIFYTHATALL
burner ports are free of debris.
8. Place newspapers in base of boiler to collect soot.
 #LEANBETWEENSECTIONSWITHWIREmUEBRUSH
2EMOVENEWSPAPERANDSOOT6ACUUMORBRUSHBASE
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/PERATINGINSTRUCTIONS
(Section B or B). Excessive sooting indicates
improper gas combustion. If found, check for proper
combustion and make any necessary adjustments.
Before troubleshooting:
 (AVETHEFOLLOWINGITEMS
A 6OLTMETERTHATCANCHECK6!#AND
6!#
b. Microammeter with a minimum scale
range of 0-25.
C #ONTINUITYCHECKER
d. U-tube manometer.
 #HECKFOR6!#MINIMUM6!#TO
MAXIMUM6!#TOBOILER
3. Make sure thermostat is calling for heat and
contacts (including appropriate zone controls)
ARECLOSED#HECKFOR6!#BETWEENTHERMO-
stat wire nuts and ground.
Troubleshooting — procedure11a
Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper
and dangerous operation.
.EVERJUMPERBYPASSROLLOUTTHERMALFUSE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PANELMUST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.
3EEPAGESTHROUGHFORADDITIONALTROUBLE-
shooting information.
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.
Service & maintenance – annual start-up (cont.)10b
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