Start-Up - Weil-McLain CP7531680 Manual

CGi
GAS-FIRED WATER BOILER — SERIES 3 —
7a
Start-up — preparation
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
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 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. Your supplier
may be able to suggest an appro-
priate device.
32
Boiler Manual
Determine if water treatment is needed
— Your pro-
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.
1. Determine
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
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.
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.
ethylene glycol, automotive or undiluted
Do not use
antifreeze
. Severe personal injury or death can result.
antifreeze quantity
according to system water content.
back flow preventer
Part Number 550-142-902/1016
or actual disconnect from