Install Instructions

Part Number 550-142-902/1016
CGi
GAS-FIRED WATER BOILER — SERIES 3 — Boiler Manual
32
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
oor level. Smell nearthe oor
for the gas odorant or any un-
usual 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.You r  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 70. 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be-
ginstoleak,causingglycolleveltodrop.Addedwaterwilldilutethe
antifreeze, reducing the freeze protection level.
Start-up — preparation
7a