14
Units will be furnished with an
epoxy powder coated paint finish.
Small scratches in the finish may
be repaired with touch-up spray
paint available from the factory.
Proper safety procedures should
be followed regarding ventilation
and personal safety equipment
when using spray paint. Follow
the manufacturer’s directions for
the products being used.
To repaint the factory powder
coat finish, prepare the surface
by lightly sanding with #280 grit
sand paper or #000 or #0000 fine
steel wool. The surface may also
be wiped with a liquid surface
etch cleaning product. These
items should be available at most
paint product stores. It should be
noted that the more care taken
during this process, the more
effective it will be.
Exposed unit touch-up
and repainting
Heating system
After this preparation is finished,
the factory finish should provide
excellent adhesion for a variety
of air dried top coats. Enamel will
give a more durable, higher gloss
finish, while latex will not adhere
as well and will give a dull, softer
finish. Top coats involving an
exothermic chemical process
between two components such
as epoxies and urethanes should
be avoided.
All standard colors including
primer can be painted over. If the
installing contractor chooses not
to paint over the primer color,
the factory cannot match primer
color on future orders, potentially
causing color match issues in the
field.
Factory touch-up spray paint
may require a number of light
coats to isolate the factory finish
from the quick drying touch-up
paint.
Prior to the water system
start-up and balancing, the
hot water system should be
thoroughly flushed to clean
out dirt and debris which may
have accumulated in the piping
during construction. During this
procedure, all unit service valves
must be in the closed position.
This will prevent any foreign
material from entering the unit’s
heat exchanger and clogging
valves and metering devices.
Strainers should be installed in
the piping mains to prevent this
material from entering the units
during normal operation.
During system filling, air venting
should be done through air vents
provided in the main system.
Inspect the entire system
for potential air traps and
independently vent those areas
as required. In addition, some
systems may require repeated
venting over time to fully
eliminate air in the system.
