Ultra Boiler Manual
Part number 550-100-440/0122
36
(continued)
Follow these guidelines to prevent pos-
sibility of severe personal injury, death
or substantial property damage:
NEVER use automotive or standard
glycol antifreeze
, even glycol made
for hydronic systems
. Use only
freeze-prevention uids recommended
by WM Technologies for application in
Ultra Boiler systems.
has used glycol
before installing the
new Ultra boiler.
Review the material safety data
sheet (MSDS)
for the uid used with
the boiler owner and leave a copy for
reference. e MSDS contains informa-
tion on potential hazards and rst aid
procedures for exposure or ingestion.
Check antifreeze 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.
When using freeze protection uid with
automatic ll,
install a water meter to
monitor water make-up
. Freeze pro-
tection uid 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 con-
centrations 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 lling with antifreeze.
Sludge, iron oxide deposits and other
sediment in the system inhibit ow and
can cause rapid breakdown of inhibitors.
Use only antifreeze recommended by
WM Technologies.
WM Technologies provides information
for application of the antifreeze products
listed in this document only for use in
Weil-McLain Ultra boilers. Do not apply
these products or instructions for other
applications. Local codes may require a
backow preventer or actual disconnec-
tion from city water supply.
2. Aer the system has been lled and leak tested, verify water pH and
chlorine concentrations are acceptable.
3. Verify antifreeze concentration, when used.
4. Follow the instructions on the Sentinel test kit to sample the system
water and verify inhibitor concentration.
1. Test the pH of a sample of system water at least annually. e 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 sucient to prevent corrosion.
3. Test antifreeze concentration.
Test antifreeze concentration at least annually. If concentra-
tion is low, add antifreeze or drain system and rell with
correct mixture.
4. Follow instructions on antifreeze container to determine the amount
of antifreeze needed.
DO NOT exceed 50% by volume concentration
of antifreeze.
5. Check inhibitor level aer adjustments are made.
1. Connect a hose to the purge valve (see purge/drain valves, item 11, in
piping diagrams beginning on page12 andpage52. Route hose to an
area where water can drain and be seen.
2. Close the boiler or system isolation valve between the purge valve and
ll connection to the system.
3. Close zone isolation valves.
4. Open quick-ll 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 ow
is present. Close the zone isolation valves and proceed with the next
zone. Follow this procedure until all zones are purged.
7. Close the quick-ll water valve and purge valve and remove the hose.
Open all isolation valves. Watch that system pressure rises to correct
cold-ll pressure.
8. Aer 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 oor. 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 oor, open air vents one at a time until water
squirts out.
12. Repeat with remaining vents.
13. Rell to correct pressure.