Weil-McLain Series 2 Manual page 80

® S
ERIES
Startup — fill the system
Freeze protection (if used)
Follow these guidelines to prevent
possibility of severe personal injury,
death or substantial property damage:
Use only the products listed by Weil-
McLain for use with this boiler. See
page 115 for information.
Thoroughly flush any system that
has used glycol
new ECO boiler.
Review the material safety data
sheets (MSDS)
The MSDS contains information
on potential hazards and first aid
procedures for exposure or ingestion.
Check antifreeze inhibitor level at
least annually
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,
meter to monitor water make-
up . Freeze protection fluid may leak
before the water begins to leak, causing
concentration to drop, reducing the
freeze protection level.
DO NOT exceed 50% antifreeze
by volume . 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.
Clean the system before filling
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.
80
2
-
G
AS FIRED WATER BOILER
before installing the
are available online.
. Glycol concentration
install a water
.
— Boiler Manual
(continued)
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 boilers have Sentinel X100 added to the
system to prevent damage to the boilers' heat exchanger. Replacement
Parts section at the end of this manual for re-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. Verify antifreeze concentration, if used.
4. Follow the instructions on the Sentinel test kit to sample the system
water and verify inhibitor concentration.
Check inhibitor concentration annually
1. 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 a Sentinel inhibitor
test kit to check concentration.)
2. If pH is outside this range (or inhibitor test kit indicates low level), the
inhibitor level may not be sufficient to prevent corrosion.
3. Test antifreeze concentration.
Test antifreeze concentration at least annually. If concentration
is low, add antifreeze or drain system and refill with correct
mixture.
4. Follow instructions on antifreeze container to determine the amount
of antifreeze needed. DO NOT
of antifreeze.
5. Check inhibitor level after adjustments are made.
exceed 50% by volume concentration
Part number 550-142-190/1218