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Part number 550-100-260/0520
98
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
6. One zone at a time, open the isolation valves. Allow water
to run through the zone, pushing out the air. Run until no
noticeable air flow is present. Close the zone isolation valves
and proceed with the next zone. Follow this procedure until all
zones are purged. Follow the same procedure to purge air from
the boiler and its internal piping.
7. Close the quick-fill water valve and purge valve and remove the
hose. Open all isolation valves. Watch that system pressure rises
to correct cold-fill pressure.
8. After the system has operated for a while, eliminate any residual
air by using the manual air vents located throughout the system.
9. If purge valves are not installed in system, open manual air vents
in system one at a time, beginning with lowest floor. Close vent
when water squirts out. Repeat with remaining vents.
10. Open automatic air vent (diaphragm-type or bladder-type
expansion tank systems only) one turn.
11. Starting on the lowest floor, open air vents one at a time until
water squirts out.
12. Repeat with remaining vents.
13. Refill to correct pressure.
X100 inhibitor is required
1. It is required that the ECO
Tec boiler have Sentinel X100 added
to the system to prevent damage to the boilers’ heat exchanger.
See Replacement Parts section at the end of this manual for
ordering information.
2. After filling the system as directed in these instructions, use a
caulking gun to inject the X100 inhibitor concentrate into the
system, or fill with the X100 in its liquid form, following the
instructions on the tube or container.
3. After adding the inhibitor to the system, allow time for the
water to circulate and mix. Then check the inhibitor level. Add
additional inhibitor if necessary.
4. See separate instructions or Weil-McLain website for suggested
guidelines to determine how much inhibitor to use.
Check/verify water chemistry
1. The system may have residual substances that could affect water
chemistry.
2. After the system has been filled and leak tested, verify water pH
and chloride concentrations are acceptable.
3. Test the pH of a sample of system water at least annually. The
pH of the water mixture must be between 7.0 and 8.5. (Or use
the Sentinel inhibitor test kit to check concentration.)
4. If pH is outside this range (or inhibitor test kit indicates low
level), the inhibitor level may not be sufficient to prevent
corrosion.
5. Verify and test antifreeze concentration, if used.
Test antifreeze concentration at least annually. If
concentration is low, add antifreeze or drain system
and refill with correct mixture.
6. Follow instructions on antifreeze container to determine the
amount of antifreeze needed.
exceed 50% by volume
concentration of antifreeze.
7. Follow the instructions on the Sentinel test kit to sample the
system water and verify inhibitor concentration.
8. Check inhibitor level after adjustments are made. Check
concentration annually.
Freeze protection (if used)
Follow these guidelines to prevent possibility
of severe personal injury, death or substantial
property damage:
before installing the new boiler.
are available online. The MSDS
contains information on potential hazards and
first aid procedures for exposure or ingestion.
. Glycol concentration and inhibitor
levels may change over time. Add antifreeze
to increase concentration if necessary. Add
inhibitor as needed to bring to acceptable level,
using inhibitor test kit to verify.
In addition to antifreeze and inhibitor, use
and maintain minimum level of Sentinel X100
inhibitor as directed on this page.
If using freeze protection fluid with automatic
fill,
. Freeze protection fluid may
leak before the water begins to leak, causing
concentration to drop, reducing the freeze
protection level.
. Antifreeze moves more sluggishly
than water and can interfere with heat transfer.
At antifreeze concentrations higher than 50%,
sludge can develop in the boiler, potentially
causing damage to the heat exchanger.
. Always drain
and flush the system thoroughly before filling
with antifreeze. Sludge, iron oxide deposits and
other sediment in the system inhibit flow and
can cause rapid breakdown of inhibitors.
Use only antifreeze recommended by Weil-
McLain.
Weil-McLain provides information for
application of the antifreeze products listed
in this document only for use in Weil-McLain
boilers. Do not apply these products or
instructions for other applications. Local codes
may require a backflow preventer or actual
disconnection from city water supply.
Startup — fill the system (continued)
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