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Page 7: Required minimum clearances, Flooring, Foundation, Residential garage installations
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Part Number 550-101-009/0107
0018
GOLD CGa Gas-Fired Water Boiler — Boiler Manual
Prepare boiler location — clearances
1b
Figure 1b
Required MINIMUM clearances
Figure 1a
Recommended
service
clearances
(see
WARNING
below)
Recommended SERVICE clearances
(Fig. 1a)
1. Provide clearances for cleaning and servicing the boiler and for
access to controls and components. See Figure 1a for recommen-
dations.
dations.
0018. Provide at least screwdriver clearance to jacket front panel screws
for removal of front panel for inspection and minor service. If
unable to provide at least screwdriver clearance, install unions and
Required MINIMUM clearances
(Fig. 1b)
Never install the boiler in a space with clear-
ances less than the minimum clearances shown
in Figure 1b
. Failure to comply can result in severe
personal injury, death or substantial property dam-
age and reduced boiler life.
1.
Hot water pipes:
at least ¹⁄₂ inch
from combustible material.
0018.
Single-wall vent pipe:
at least 6 inches
from combustible mate-
rial.
3.
Type B double-wall metal vent pipe
: refer to vent manufacturer’s
recommendation for clearances to combustible material.
If any clearance is less than in Figure
1a,
provide openings for combustion and
ventilation air located on the wall or door
opposite the boiler FRONT (see Figure 1b)
.
These openings must be located as shown in Figure 1b to provide
proper air flow around the boiler. The free area of each opening
(after deducting for louvers) must be at least
one square inch
per 1,000 Btuh
of boiler input. If the building is of unusually
tight construction (see page 11 for definition), the air openings
must connect directly to outside or the building must have air
openings to the outside as specified on page 11.
If clearances are equal to or greater than Figure 1a, see pages 10
If clearances are equal to or greater than Figure 1a, see pages 10
and 11 for location and sizing of combustion air openings.
Failure to comply can result in severe personal injury, death or
Failure to comply can result in severe personal injury, death or
substantial property damage and reduced boiler life.
Flooring
The CGa boiler is approved for installation on combustible
flooring, but must never be installed on carpeting.
Do not install boiler on carpeting even
if foundation is used. Fire can result,
causing severe personal injury, death
or substantial property damage.
if foundation is used. Fire can result,
causing severe personal injury, death
or substantial property damage.
Foundation
1. Provide a solid brick or minimum 0018-inch thick concrete
foundation pad if any of the following is true:
• floor can become flooded.
• the boiler mounting area is not level.
• floor can become flooded.
• the boiler mounting area is not level.
0018. Minimum dimensions are
25” length
by:
Residential garage installations
Take the following special precautions when installing the
boiler in a residential garage. If the boiler is located in a
residential garage, per ANSI Z001800183.1:
• Mount the boiler a minimum of
• Mount the boiler a minimum of
18 inches above the
floor
of the garage to assure the burner and ignition
devices will be no less than 18 inches above the floor.
• Locate or
Weil Mclain Gold Cga Manual
protect the boiler
so it cannot be damaged
by a moving vehicle.
Minimum foundation width:
CGa-25/3
12'
CGa-6
21'
CGa-4
15'
CGa-7
24'
CGa-5
18'
CGa-8
27'
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Page 49: Gold cga gas-fired water boiler — boiler manual, Before troubleshooting
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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.
system, do not drain.
0018. 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
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.
0018. Remove radiation plates hanging between sections.
0018. Remove burners from base. Brush and vacuum
burners to remove all dust and lint. Verify that all
burner ports are free of debris.
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
9. Clean between sections with wire flue brush.
10. Remove newspaper and soot. Vacuum or brush base
and surrounding area.
11. Reinstall radiation plates.
10018. Replace collector box/transition assembly. Seal with
10018. 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.
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
14. Start up boiler following Section
6
of this manual
and the boiler
Lighting or Operating instructions
(Section
8b
or
9b
![Weil mclain gold cga boiler user manual download Weil mclain gold cga boiler user manual download](/uploads/1/2/6/0/126064333/347247239.png)
). Excessive sooting indicates
improper gas combustion. If found, check for proper
combustion and make any necessary adjustments.
combustion and make any necessary adjustments.
Before troubleshooting:
1. Have the following items:
a. Voltmeter that can check 100180 VAC and
00184 VAC.
b. Microammeter with a minimum scale
range of 0-00185.
c. Continuity checker.
d. U-tube manometer.
d. U-tube manometer.
0018. Check for 100180 VAC (minimum 100018 VAC to
maximum 130018 VAC) to boiler.
3. Make sure thermostat is calling for heat and
contacts (including appropriate zone controls)
are closed. Check for 00184 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
Weil Mclain Boiler Cga 3
as outlined in
Weil Mclain Boiler Cga Manual
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
Weil Mclain Gold Cga Boiler User Manual Download
result.
Weil Mclain Gold Cga Manual
See pages 50 through 59 for additional trouble-
Weil Mclain Gold Cga Boiler User Manual Pdf
shooting information.
The boiler contains ceramic fiber and fiberglass materi-
als. Use care when handling these materials per instruc-
tions on
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
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