Weil-McLain Gold CGa - Manual (Page 49)

Part Number 550-101-009/0107
49
GOLD CGa Gas-Fired Water Boiler — Boiler Manual
❏ Cleaning boiler heating surfaces
1. Shut down boiler:
• Follow “ To Turn Off Gas to Appliance ” in-
structions on boiler and Lighting or Operating
instructions .
• Do not drain boiler unless it will be exposed
to freezing temperatures. If using antifreeze in
system, do not drain.
. Follow shutdown procedure.
3. Remove venting system connection to boiler.
4. Remove top jacket panel. Turn back insulation.
5. Remove flue collector. Clean sealant from assembly
and sections.
. Remove radiation plates hanging between sections.
. Remove burners from base. Brush and vacuum
burners to remove all dust and lint. Verify that all
burner ports are free of debris.
8. Place newspapers in base of boiler to collect soot.
9. Clean between sections with wire flue brush.
10. Remove newspaper and soot. Vacuum or brush base
and surrounding area.
11. Reinstall radiation plates.
1. 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
6 of this manual
and the boiler Lighting or Operating instructions
(Section 8b or 9b ). Excessive sooting indicates
improper gas combustion. If found, check for proper
combustion and make any necessary adjustments.
Before troubleshooting:
1. Have the following items:
a. Voltmeter that can check 10 VAC and
4 VAC.
b. Microammeter with a minimum scale
range of 0-5.
c. Continuity checker.
d. U-tube manometer.
. Check for 10 VAC (minimum 10 VAC to
maximum 13 VAC) to boiler.
3. Make sure thermostat is calling for heat and
contacts (including appropriate zone controls)
are closed. Check for 4 VAC between thermo-
stat wire nuts and ground.
Troubleshooting — procedure
11a
Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper and
dangerous operation.
Never jumper (bypass) rollout thermal fuse element
or any other device except for momentary testing
as outlined in Troubleshooting Charts . Severe
personal injury, death or substantial property
damage can result.
Burner 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.
See pages 50 through 59 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 68 of this manual. Failure to comply
could result in severe personal injury.
Service & maintenance – annual start-up
(cont.)
10b