Use and Care Manual
36
110637-01 - 5/20
RRO Installation & Service Manual
x. Stop firing the boiler.
xi. Drain the system in a manner and
to a location that hot water can be
discharged with safety.
xii. Remove plugs from all available returns
and wash the water side of the boiler as
thoroughly as possible, using a high-
pressure water stream.
xiii. Refill the system with fresh water.
c. Add appropriate boiler water treatment
compounds as recommended by your
qualified water treatment company.
d. 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.
e. Boiler is now ready to be put into service.
11 Maintenance and Service Instructions (continued)
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 IX, Paragraphs
A through K.
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.
!
IMPORTANT
IF, DURING NORMAL OPERATION, IT IS
NECESSARY TO ADD MORE WATER THAT
INDICATED BELOW, CONSULT A QUALIFIED
SERVICE TECHNICIAN TO CHECK YOUR
SYSTEM FOR LEAKS.
Boiler
Series
Gallons Per
Month
Gallons Per
Year
RRO-3 0.3 4
RRO-4 0.4 5