manufactured in the USA of cold rolled low carbon steel and
should be used only in closed hydronic systems to insure
against corrosion of system components.
operation depends on adequate flow of water to the panel,
which can only be accomplished when all the system air has
been fully vented from the panels.
each be vented, with the system pressurized but in a static
state (pumps off). Venting may need to be done periodically
to assure a closed system.
RS2 radiators are standard pressure construction. Standard
pressure column radiators should be tested with no more than
56 psi max (tested at 74 psi)
Radiators expand a
maximum of 0.016 inch per linear foot of length if heated to
215°F. Piping attached to the radiator must provide the
necessary expansion compensation.
and elbowed piping are two simple ways to provide the 1/8
inch to 1/2 inch (typical) of flexibility required in
expansion situations (usually series piping).
require less flow rate than other hydronic heating products.
If flow noise is apparent, balance the system until the
noise is reduced.
8. For a delta T of 20°F (T supply minus T return), divide
the total Btu/hr capacity of the loop by 10,000. This gives
the Flow Rate in gallons per minute (GPM).
Many levels of
control are available today for hydronic systems. Runtal
Radiators will provide comfortable, even heating whether
operated by a simple thermostat to baseboard loop system, or
an advanced boiler reset controller with motorized mixing
valves, constant circulation and 2-pipe distribution.
maintenance should include routine checks for piping leaks
(usually indicated by frequent makeup water), and a yearly
diagnosis of the system water pH to evaluate its corrosive
maintenance depends entirely on the system water makeup and
proper venting. Hydronic system additives are available to
passivate and protect against freezing. These additives will
not significantly reduce the output of Runtal Radiators.
maintenance consists of keeping the surfaces clean, and any
paint nicks or deep scratches painted with touch-up to
prevent any surface rust.
Radiators can be
painted after sanding with fine grit paper to dull the high
gloss and by wiping with solvent or a tack rag. Use only
oil-based enamel paint (alkyd, acrylic, urethane, epoxy) –
do not use latex or lacquer paint. Use urethane or epoxy
enamel for radiators located in harsh environments. Spray
the paint to achieve an even coating, and let dry completely
before heating the radiator.