Provide UFLT steel
panel radiator elements of lengths and in locations as
indicated, and of capacities, style and having accessories
as scheduled. The wall hung heating panel radiation shall be
of one-piece all-welded steel construction, consisting of
flattened water tubes welded to headers at each end. The
radiator shall include an integral heavy gauge (0.09
minimum) all-welded perforated top grille. UFLT models to
have steel corrugated fins welded to the active water tubes
to increase the convective output of the unit. There shall
be no less than 32 fins per foot. Fins shall start within 1
of the headers, and shall be spot-welded three times per
tube. In addition, there shall be an inactive set of tubes
on the front side of the UFLT, so that the front and rear
sides of the UFLT look the same.
The radiators headers shall include all necessary inlet,
outlet and vent connections as required. Standard connection
sizes are ½ NPT tapered thread for supply and return
piping, and 1/8 for the vent connection.
The radiant heating panels shall be available in lengths
from 2-0 to 24-0 in six inch even increments from 2-0
to 4-0, and in one foot increments from 4-0 to 24-0.
The panel radiation shall be capable of being mounted to
typical stud wall construction without additional blocking
or strapping. Appropriate wall mounting brackets or optional
floor post mounting shall be provided with the radiation.
Panel radiation expansion shall not exceed 1/64 per foot of
radiation at 215ΊF. The installer shall provide adequate
expansion compensation for each radiator.
The panel radiation shall be manufactured in the USA.
Pressure ratings for the radiation shall be as follows:
STANDARD: Working pressure-56 PSI maximum, Test Pressure-74
MEDIUM: Working pressure-85 PSI maximum, Test Pressure-110 PSI
HIGH: Working pressure-128 PSI maximum, Test Pressure 184 PSI
The panel radiation shall be cleaned and phosphatized in
preparation for the powder coat finish. The radiation is
then finish painted with a gloss powder coat finish, for a
total paint thickness of 2-3 mils (0.002 - 0.003). The
color shall be selected from Runtals ten Standard Colors;
or Runtal Optional Colors shall be available at and
All Runtal radiators are covered by a 5-Year Limited Warranty.
Subject to compliance with requirements, provide flat tube
panel radiation as manufactured by Runtal North America, Inc.
OPTIONAL ITEMS WHICH MAY BE ADDED TO THE SPECIFICATION:
Ribbed pipe cover trims,
finished to match the radiators shall be provided with the
The radiation manufacturer shall
provide combination shutoff valve/union fitting of less than
two inches in width for the supply and return to each panel
radiator, to be field installed by others.
Runtal-Flex connectors shall be
used where appropriate to provide expansion compensation for