Review With Owner - Williamson-Thermoflo GWS-090E Manual

GWS-090E Gas-Fired Water Boiler – Boiler Manual
11 Service and maintenance
❏ Check/test . . . .
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 manu-
facturer'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 3, page 9, before
proceeding further.
Safety relief valves should be reinspected AT LEAST
ONCE EVERY THREEYEARS, by a licensed plumb-
ing contractor or authorized inspection agency, to
ensure that the product has not been affected by
corrosive water conditions and to ensure that the
valve and discharge line have not been altered or
tampered with illegally. Certain naturally occurring
conditions may corrode the valve or its components
over time, rendering the valve inoperative. Such
conditions are not detectable unless the valve and its
components are physically removed and inspected.
This inspection must only be conducted by a plumb-
ing contractor or authorized inspection 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.
2. After following the above warning directions, if the relief valve
weeps or will not seat properly, replace the relief valve. En-
sure that the reason for relief valve weeping is the valve and
not over-pressurization of the system due to expansion tank
waterlogging or undersizing.
Following installation, the valve lever must be op-
erated AT LEAST ONCE A YEAR to ensure that
waterways are clear. Certain naturally occurring
mineral deposits may adhere to the valve, rendering
it inoperative. 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 direct-
ing the flow of hot water from the valve to a proper
place of disposal otherwise severe personal injury
may result. If no water flows, valve is inoperative.
Shut down boiler until a new relief valve has been
installed.
❏ Review with owner
1. Review the User's Information Manual with the owner.
2. Emphasize the need to perform the maintenance schedule
specified in the User's Information Manual (and in this manual
as well).
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.
24
continued
continued
❏ Cleaning boiler heating surfaces
The boiler contains ceramic fiber and fiberglass
materials. Use care when handling these materials
per instructions on page 21 of this manual. Failure
to comply could result in severe personal injury.
1. Shut down boiler:
• Follow "To Turn Off Gas to Appliance" instructions on boiler and
"Operating instructions" page 19.
• Do not drain boiler unless it will be exposed to freezing tempera-
tures. 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 sections.
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 14-15 of this manual
and the boiler "Operating instructions", page 19. Excessive
sooting indicates improper gas combustion. If found, check for
proper combustion and make any necessary adjustments.
Verifying gas manifold pressure
valve)
a. Natural gas:
Manifold pressure, high fire: 3.50" w.c.
Manifold pressure, low fire: 0.90" w.c. while in low fire at
start-up (60 seconds)
b. Propane gas:
Manifold pressure, high fire: 10.0" w.c.
Manifold pressure, low fire: 3.50" w.c. while in low fire at
start-up (60 seconds)
c. If necessary, adjust gas pressure on the gas valve as
shown below. After adjustments, refer to page 34 to
check the flame.
High-fire gas pressure adjustment
Low-fire gas pressure adjustment
Honeywell VR8204Q two-stage gas valve
(downstream of gas
Part Number 550-110-737/1108