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Part Number 550-142-303/1120
24
EG
/
PEG sEriEs 6
•
EGH sEriEs 5 Gas-firEd boilErs — boilEr manual
Freeze protection (when used)
Use antifreeze especially made for hydronic systems. Inhibited
propylene glycol is recommended.
Do not use automotive, ethylene glycol or undiluted
antifreeze. Severe personal injury, death or substan-
tial property damage can result.
Local codes may require back-flow preventer or actual disconnect
from city water supply.
Determine quantity according to system water content. Boiler
water content is listed on page 39. Remember to add in expansion
tank water content.
Follow antifreeze manufacturer’s instructions.
Filling water systems
1. Close manual air vents, drain cock, and automatic air vent, if
used.
2. Fill to correct system pressure. Correct pressure will vary with
each application. Residential systems are often designed for
12 PSIG of cold fill pressure.
3. Open automatic air vent one turn, if used.
4. Open manual water feed valve.
a. Starting on lowest floor, open air vents one at a time until
water squirts out. Close vent.
b. Repeat with remaining vents.
5. Close manual water feed valve when correct boiler pressure
is reached.
6. If purge valve is used - located in the return piping above
isolation valve:
a. Connect hose to purge valve.
b. Close isolation valve. Open purge valve.
c. Open hand water feed valve and allow system to purge all
air. If system has more than one circuit, purge each circuit
separately by opening each balancing valve one at a time.
d. Close purge valve and water feed valve cock.
e. Open isolation valve.
f. Fill system to correct pressure.
Filling steam boilers
1. Fill to normal waterline, halfway up gauge glass.
2. Boiler water pH 7.0 to 8.5 is recommended.
3. Follow skimming procedure.
Wiring multiple zones
Refer to zone valve manufacturer’s literature for wiring and ap-
plication. A separate transformer is required to power zone valves.
Zoning with circulators requires a relay for each circulator.
DO NOT connect directly from 3-wire
zone valves to the T-T terminals on the
boiler
. When using 3-wire zone valves, install
an isolation relay. Connect the zone valve
end switch wires to the isolation relay coil.
Connect the isolation relay contact across the
boiler T-T terminals. Failure to comply can
result in damage to boiler components or
cause unreliable operation, resulting in severe
property damage.
Check for gas leaks
Before starting the boiler, and during initial opera-
tion, 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 propane 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.
• Propanegascanaccumulate at oor 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.
• Usecautionwhenattemptingtolightthepropane
pilot. This should be done by a qualified service
technician, particularly if pilot outages are common.
• Periodicallychecktheodorantlevelofyourgas.
• Inspectboilerandsystem at least yearlytomake
sure all gas piping is leak-tight.
• Consultyourpropanesupplierregardinginstalla-
tion of a gas leak detector. There are some products
on the market intended for this purpose. Your sup-
plier may be able to suggest an appropriate device.
Fill the system
Do not fill (except for leakage tests) until the boiler
is ready to be fired.
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.
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.
Start-up
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