End Of Season; Troubleshooting; Shutdown Procedure - Williamson-Thermoflo RVGP User's Information Manual

GSA Gas-Fired Steam Boilers – User's Information Manual
❏ End of season

Shutdown procedure

1. Follow "TO TURN OFF GAS TO APPLIANCE" on the "Lighting
Instructions" on the inside of the jacket panel. You will also find
these instructions on pages 4 and 5 of this manual.
Use the "Lighting Instructions" for the gas valve model installed
on the boiler.
❏ Troubleshooting
Troubleshooting — Common problems and possible solutions
Symptom Common Causes
Thermostat installed where drafts or
heat affect reading
Heat anticipator in thermostat
adjusted incorrectly
Rapid cycling — boiler
turns on and off
Incorrect limit setting
frequently
Main air vent not working (one-pie
steam) or trap not working (two-pipe
steam)
Frequent release of
water through relief Inoperative limit control
valve
Need to frequently add
Leaks in boiler or piping
makeup water
Oxygen corrosion due to leaks in
Black water condition
boiler and piping
Mineral deposits in sections due to
constant use of makeup water
Popping or percolating
noise heard in boiler
Incorrect pH of boiler water
Incorrect piping in Hartford loop
Water disappears from
gauge glass and back
Check-valve inoperative or leaking
out into system through
return piping
Vacuum breaker inoperative
Contaminated combustion air supply
Metal flakes found in
— See page 2 in this manual.
vent outlet or vent —
flueway corrosion
Condensation of combustion gases
in boiler sections
Main (or radiator) air vents (one-pipe
Some radiators or
steam) or traps (two-pipe steam) not
baseboard units do not
operating correctly
heat
High limit set too low
Dirt, oil or other impurities in water
Violent waterline
fluctuations or surging
Waterline too high
Incorrect piping
Water passing into
steam mains — priming
Sudden release of boiler steam
pressure by action of zone valves
8
2. Do not drain system unless exposure to freezing temperatures
will occur.
3. Do not drain the system if it is filled with an antifreeze solution.
4. Do not shut down boilers used for domestic water heating. They
must operate year-round.
Possible Corrections
Locate thermostat on inner wall away from heat sources or cool drafts.
Adjust thermostat per manufacturer's instructions.
Set limit according to system needs. Maximum setting is 15 psig. Increase limit setting to
decrease cycling.
Contact service technician to check/replace main air vent or trap
Call qualified service technician to replace limit control.
Have qualified service technician repair leaks at once to avoid constant use of makeup
water. Makeup water can cause mineral deposits which, in turn, can cause boiler section
failure.
Have qualified service technician repair at once. Keep pH of water between 7.0 to 8.5.
Call qualified service technician to de-lime boiler, if necessary. In some cases, deposits will
be too heavy to remove with de-liming procedures.
Have qualified service technician repair leaks to eliminate need for constant makeup water.
Call qualified service technician to check pH level and correct. pH should be maintained
between 7.0 to 8.5.
Call qualified service technician to inspect. Correct piping, if necessary, to agree exactly with
Boiler Manual. Clean or replace check valve or vacuum breaker if required.
Remove any contaminating products. See page 2 in this manual.
Provide outside air for combustion. Kit available through local distributor. Have qualified
service technician pipe-up kit.
Have qualified service technician inspect system piping and controls to verify proper
regulation of return water temperature.
Call qualified service technician to inspect/replace air vents or traps
Adjust high limit to higher setting.
Call qualified service technician to skim boiler, referring to Boiler Manual for procedure.
Correct waterline to maximum height of gauge glass, minimum height of ¼" above bottom
of gauge glass.
Call qualified service technician to inspect piping, correcting to exactly as shown in Boiler
Manual, if not as shown.
Call qualified service technician to inspect, adjusting valves or replacing with slow-opening
valves if necessary.
W-T
8201 W. Calumet Rd.
Milwaukee, WI 53223
Part Number 550-110-739/0703