Product Overview

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103859-12 - 8/19
MPO-IQ
Installation & Service Manual
c. Remove relief valve using extreme care to avoid
damaging it.
d. Add an appropriate amount of recommended
boil out compound.
e. Replace relief valve.
f. Fill the entire system with water.
g. Start firing the boiler.
h. Circulate the water through the entire system.
i. Vent the system, including the radiation.
j Allow boiler water to reach operating temperature,
if possible.
k. Continue to circulate the water for a few hours.
l. Stop firing the boiler.
m. Drain the system in a manner and to a location
that hot water can be discharged with safety.
n. Remove plugs from all available returns and
wash the water side of the boiler as thoroughly
as possible, using a high-pressure water stream.
o. Refill the system with fresh water.
3. Add appropriate boiler water treatment compounds
as recommended by your qualified water treatment
company.
4. Make pH or Alkalinity Test.
After boiler and system have been cleaned and
refilled as previously described, test the pH of the
water in the system. This can easily be done by
drawing a small sample of boiler water and testing
with hydrion paper which is used in the same manner
as litmus paper, except it gives specific readings. A
color chart on the side of the small hydrion dispenser
gives the reading pH. Hydrion paper is inexpensive
and obtainable from any chemical supply house
or through your local druggist. The pH should be
higher than 7 but lower than 11. Add appropriate
water treatment chemicals, if necessary, to bring the
pH within the specified range. With this lower level
of protection, care must be exercised to eliminate
all of the free oxygen in the system.
5. Boiler is now ready to be put into service.
C. EXCESSIVE MAKE-UP WATER
A leaky system will increase the volume of make-up
water supplied to the boiler which can significantly
shorten the life of the boiler. Entrained in make-up water
are dissolved minerals, salts and oxygen. When the
fresh, cool make-up water is heated in the boiler the
minerals fall out as sediment, the salts coat the inside
of the boiler, and the oxygen escapes as a gas. The
accumulation of sediment eventually isolates the water
from contacting the cast iron. When this happens
the cast iron in that area gets extremely hot and
eventually cracks. The presence of free oxygen or
chloride salts in the boiler corrodes the cast iron
from the inside. More make-up water and higher
concentrations of contaminants damage the boiler
sooner. Our warranty does not cover corrosion and
sediment-related damage. Clearly it is in everyone's
best interest to prevent this type of failure. You can
do your part by ensuring that your system is leak-free,
keeping leakage to less than 2 percent of the boiler
water volume each month.
D. ATTENTION TO BOILER WHILE NOT IN
OPERATION.
NOTICE If boiler is not used during winter time, it
must be fully drained to prevent freeze damage.
1. Spray inside surfaces with light lubricating or
crankcase oil using gun with extended stem so as
to reach all corners.
2. Always keep the manual fuel supply valve shut off
if the burner is shut down for an extended period
of time.
3. To recondition the heating system in the fall season
after a prolonged shut down, follow the instructions
outlined in Section VIII.
IMPORTANT
IF, DURING NORMAL OPERATION, IT IS
NECESSARY TO ADD MORE WATER THAN
INDICATED BELOW, CONSULT A QUALIFIED
SERVICE TECHNICIAN TO CHECK YOUR
SYSTEM FOR LEAKS.
Model No.
Gallons
Per Month
Gallons
Per Year
MPO-IQ84B/115B 0.20 2.4
MPO-IQ147B 0.25 3.0
MPO-IQ189B 0.30 3.6
MPO-IQ231B 0.40 4.8
10 Maintenance and Service Instructions (continued)
WARNING
This boiler contains controls which may cause the
boiler to shut down and not restart without service.
If damage due to frozen pipes is a possibility,
the heating system should not be left unattended
in cold weather; or appropriate safeguards and
alarms should be installed on the heating system
to prevent damage if the boiler is inoperative.
!