Weil-McLain CGI-4E Boiler User Manual


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CGi-4E Gas-Fired Water Boiler — Boiler Manual
32
Part Number 550-110-711/1108
Start-up — preparation7a
Check for gas leaks
Beforestartingtheboiler,anddur-
ing initial operation, smell near the
floor and around the boiler for gas
odorantor anyunusualodor.Do
not proceed with start-up if there is
any indication of a gas leak. Repair
any leak at once.
Propane boilers only—Yourpro-
pane supplier mixes an odorant with
the propane to make its presence
detectable. In some instances, the
odorant can fade and the gas may
no longer have an odor.
• Propane gas canaccumulate
atfloorlevel.Smellnearthe
floor for the gas odorant or any
unusual odor. If you suspect a
leak, do not attempt to light the
pilot.
• Use cautionwhen attempting
to light the propane pilot. This
should be done by a qualified
service technician, particularly
if pilot outages are common.
• Periodically check the odorant
level of your gas.
• Inspectboilerandsystematleast
yearly to make sure all gas piping
is leak-tight.
• Consult your propanesupplier
regarding installation of a gas
leak detector. There are some
products on the market intended
forthispurpose.Yoursupplier
may be able to suggest an appro-
priate device.
Determine if water treatment is needed
Donotusepetroleum-based cleaning or sealing
compounds
inboilersystem.Severedamagetoboiler
will occur, resulting in substantial property damage.
Eliminateallsystemleaks.Continualfresh makeup
water will reduce boiler life. Minerals can build up in
sections, reducing heat transfer, overheating cast iron,
and causing section failure.
Verify water chemistry
Consultlocalwatertreatmentcompaniesforunusuallyhardwaterareas
(above7grainshardness)orlowpHwaterconditions(below7.0).Boiler
waterpHof7.0to8.5isrecommended.
Freeze protection (when used)
Use antifreeze made especially for hydronic systems. Inhibited propylene
glycol is recommended.
Donotuseethylene glycol, automotive or undiluted
antifreeze
.Severepersonalinjuryordeathcanresult.
1. Determine
antifreeze quantity according to system water content.
Boilerwatercontentislistedonpage67.Remembertoincludeexpan-
sion tank water content.
2. Follow antifreeze manufacturer’s instructions.
3. A50%solutionofpropyleneglycol/waterprovidesmaximumprotec-
tion to about -30°F.
4. Local codes may require
back ow preventer or actual disconnect
from city water supply.
5. When using antifreeze in a system with automatic fill, install a water
metertomonitor water makeup.Glycolwillleakbeforethewater
begins to leak, causing glycol level to drop. Added water will dilute the
antifreeze, reducing the freeze protection level.
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