Install Instructions
Startup — fill the system (continued)
Freeze protection (if used)
Follow these guidelines to prevent pos-
sibility of severe personal injury, death
or substantial property damage:
5SE ONLY THE PRODUCTS LISTED BY
7EIL-C,AINFORUSEWITHTHISBOILER
3EEPAGEFORINFORMATION
4HOROUGHLY mUSH ANY SYSTEM THAT
HASUSEDGLYCOL
before installing the
new Evergreen
TM
boiler.
2EVIEW THE MATERIAL SAFETY DATA
SHEETS -3$3
are available online.
The MSDS contains information on
potential hazards and first aid procedures
for exposure or ingestion.
#HECKANTIFREEZE INHIBITOR LEVEL AT
LEAST ANNUALLY
. Glycol concentration
and inhibitor levels may change over
time. Add antifreeze to increase con-
centration 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,
INSTALL A WATER METER
TO MONITOR WATER MAKEUP
. Freeze
protection fluid may leak before the wa-
ter begins to leak, causing concentration
to drop, reducing the freeze protection
level.
$/./4EXCEEDANTIFREEZEBY
VOLUME
. Antifreeze moves more slug-
gishly than water and can interfere with
heat transfer. At antifreeze concentra-
tions higher than 50%, sludge can de-
velop in the boiler, potentially causing
damage to the heat exchanger.
#LEAN THE SYSTEM BEFORE FILLING.
Always drain and flush the system thor-
oughly 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 Evergreen
TM
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.
Part number 550-100-131/0715
– 85 –
™
GAS-FIRED WATER BOILER — Boiler Manual
3. Close zone isolation valves.
4. Open quick-fill valve on cold water make-up line.
5. Open purge valve.
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.
Use X100 Inhibitor supplied with boiler
The boiler must have Sentinel X100 inhibitor added to the
system to prevent damage to the boilers heat exchanger.
1. After filling the system as directed in these instructions, use a caulk-
ing gun to inject the X100 inhibitor into the system, following the
instructions on the tube.
2. Inject all of the inhibitor supplied with the boiler. Allow time for the
water to circulate and mix. Then check the inhibitor level. Add ad-
ditional inhibitor if necessary. See Repair Parts at end of manual for
re-ordering information.
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 the 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 concentra-
tion 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.
$/./4 exceed 50% by volume concentration
of antifreeze.
5. Check inhibitor level after adjustments are made.