Xylem MM 307H Series 101-A Electric Water Feeder - Manual (Page 7)

7
Burner Off (Cold) Test
1. Manually fill boiler until water level in the sight glass
is more than half filled.
2. With the room thermostat set at the lowest setting,
turn on the power to the boiler and water feeder.
3. Using the sight glass as a reference, slowly drain
water from boiler by opening the low water cut-off
blow down valve or the boiler drain until the low
water cut-off activates the water feeder.
IMPORTANT: If the water feeder does not activate
before the water level reaches the bottom of the
sight glass, immediately close any open drain or
blow down valve and check controls and piping for
proper installation. Correct any problems.
4. Using the sight glass as a reference, see that the
water feeder activates and fills to approximately 1/2”
to 1” (13 - 15mm) above the burner cut-off level of
the low water cut-off.
IMPORTANT: If the water feeder does not turn off
once the water level has surpassed the halfway
point of the sight glass, immediately turn off the
power to the boiler and water feeder and check
control for proper installation. Correct any problems.
5. Repeat test 2 or 3 times. Restore boiler and controls
to normal settings.
Burner On (Hot) Test
1. Manually fill the boiler to the boiler manufacturer’s
recommended operating level.
2. Turn on the power to the boiler and water feeder.
Activate the burner by raising the thermostat set point.
3. As steam is generated, the boiler water level will
decrease. Slowly open the low water cut-off blow
down valve or the boiler drain to lower the water level
to the proper level, necessary to activate water feed-
er.
IMPORTANT: If the water feeder does not activate
before the water level reaches the bottom of the sight
glass, immediately turn off power to the boiler and
close any open drain or blow down valve and check
controls and piping for proper installation. Correct any
problems.
4. Using the sight glass as a reference, see that the
water feeder activates and fills to approximately 1/2”
to 1” (13 - 15mm) above the burner cut-off level of the
low water cut-off.
IMPORTANT:
If the water feeder does not turn off
once the water level has surpassed the halfway point
of the sight glass, immediately turn off the power to
the boiler and water feeder and check control for
proper installation. Correct any problems.
5. Repeat test 2 or 3 times. Restore boiler and controls
to normal settings.
INSTALLATION COMPLETE
TROUBLESHOOTING
Problem:
1. Pipes rattle when valve is operating.
Solution:
a.
Secure all piping.
b. Install an air chamber on water feeder inlet pipe.
2. Water feeder doesn’t activate.
Solution:
a.
Check wiring and connections to make sure they
are correct and secure.
b. Make sure that the low water cut-off is operating
properly.
3. Water feeder activates, but does not feed water to
the boiler.
Solution:
a.
Make sure all valves are open.
b. Remove and clean strainer.
c. Remove and clean cartridge valve assembly.
d. Make sure the water feeder is properly piped to
the boiler.
e. Make sure the piping is not restricted or clogged.
4. Water feeder does not shut off.
Solution:
a.
Check wiring and connections to make sure they
are correct and secure.
b. Make sure that the low water cut-off is operating
properly.
c. Make sure manual feed button operates freely.
NOTE: The water feeder will only restore the boiler
water level to approximately 1/2” to 1” (13-25mm)
above the burner cut-off level of the low water cut-off.