Weil-McLain CGi 4 Series Manual page 48

Gas-fired water boilers
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CGi
SERIES 4 — GAS-FIRED WATER BOILER —
10b
Service & maintenance – annual start-up
Safety relief valves should be
AT LEAST ONCE EVERY THREE YEARS
licensed plumbing contractor or authorized
inspection agency, to ensure that the prod-
uct has not been affected by corrosive water
conditions and to ensure that the valve and
discharge line have not been altered or tam-
pered with illegally. Certain naturally occur-
ring conditions may corrode the valve or its
components over time, rendering the valve
inoperative. Such conditions are not detect-
able unless the valve and its components
are physically removed and inspected. This
inspection must only be conducted by a
plumbing contractor or authorized inspec-
tion agency — not by the owner. Failure to
reinspect the boiler relief valve as directed
could result in unsafe pressure buildup,
which can result in severe personal injury,
death or substantial property damage.
Following installation, the
be operated AT LEAST ONCE A YEAR
ensure that waterways are clear. Certain
naturally occurring mineral deposits may
adhere to the valve, rendering it inopera-
tive. When manually operating the lever,
water will discharge and precautions must
be taken to avoid contact with hot water and
to avoid water damage. Before operating
lever, check to see that a discharge line is
connected to this valve directing the flow of
hot water from the valve to a proper place
of disposal otherwise severe personal injury
may result.
erative.
valve has been installed.
Boiler relief valve
1. Inspect the relief valve and lift the lever to verify flow as
in the following warnings, excerpted from a relief valve
manufacturer's warning label. Before operating any relief
valve, ensure that it is piped with its discharge in a safe
area to avoid severe scald potential. Read manual Section
before proceeding further.
4
2. After following the above warning directions, if the relief
valve weeps or will not seat properly, replace the relief
valve. Ensure that the reason for relief valve weeping is
the valve and not over-pressurization of the system due
to expansion tank waterlogging or under sizing.
Figure 35 Relief valve, typical
48
reinspected
valve lever must
If no water flows, valve is inop-
Shut down boiler until a new relief
Boiler Manual
Review with owner
, by a
1. Review the
owner.
2. Emphasize the need to perform the maintenance
schedule specified in the
(and in this manual as well).
Manual
3. Remind the owner of the need to call in a licensed
contractor should the boiler or system exhibit any
unusual behavior.
4. Remind the owner to follow the proper shutdown
procedure and to schedule an annual start-up at
the beginning of the next heating season.
Cleaning boiler
heating surfaces
to
1. Shut down boiler:
Follow "To Turn Off Gas to Appliance" in-
structions on boiler and Operating instruc-
tions.
Do 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.
5. Remove collector box/transition assembly. Clean
sealant from assembly and sections.
6. Remove radiation plates hanging between sec-
tions.
7. 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.
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 7, pages 32-35
of this manual and the boiler Operating instruc-
tions. Excessive sooting indicates improper gas
combustion. If found check for proper combustion
and make any necessary adjustments.
(cont.)
User's Information Manual
User's Information
The boiler contains ceramic fiber and
fiberglass materials. Use care when
handling these materials per instruc-
tions on page 71 of this manual. Fail-
ure to comply could result in severe
personal injury.
Part Number 550-142-302/0124
with the

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