WHS, WCS & SHS
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3
General
The coil has copper tubes and aluminium fins. The
casing is made in galvanized steel as standard.
All cooling battery’s has a drip tray in stainless steel
to collect the condensed water.
In order to ensure maximum effectiveness and
reliable operation, it is inadvisable to install the coil
immediately downstream of the fan outlet or a duct
bend.
The coil must be installed so it is accessible for
cleaning.
It can be installed in horizontal or in vertical duct with
optional air direction.
Note
, if steam heater SHS is
installed in a vertical duct the heater must be angled
in the direction of the outlet.
An efficient air filter is recommended in the system.
The filter must not be installed immediately
downstream of the cooling coil. (see also under
Cleaning).
Operating data
The maximum operation pressure (MPa) and the
maximum work temperature (°C) is stated on the type
label.
Installation
When installing, the following must be taken into
consideration:
•
The coil can be installed either upstream or
downstream of the fan unit, it is either bolted
to the duct system or connected by means of
slip clamps.
•
The battery is normally provided with labels,
that shows the inlet and outlet water
connection.
On SHS coils the steam-inlet must always
be connected to the pipe situated the very
top; otherwise there is a risk that the coil
can be damaged.
•
The outside of a duct cooler must be
insulated so that no condensate will form on
the outside. The ducts carrying cooled air
must also be insulated.
•
The ½” condensate outlet should be
connected across a water trap in order to
prevent air leakage. N.B. The size of the
outlet should be determined so that no
stagnant water will remain in the drip tray.
•
Direct after the system been filled with water
check coil and its connection for leakage.
Leakage can cause water damage.
Steam and Condensate pipes
(on SHS)
The steam should be dry, wet steam can damage the
coil and piping system.
Before the coil, the steam pipe should be drained
from condense with a shunt. The branch conduit for
this should be place as close as possible to the coil
to drain the condensate off.
Connection
The connection tubes are made with male
threadings.
When tightening the couplings at the connecting
pipes, these must be restrained so that the tightening
torque will not be applied to the inlet and outlet pipes
of the coil.
Make sure that the coils connections are not
subjected to expansion forces in the system or to the
deadweight of the pipe system.
Cleaning
The intervals between cleaning are entirely
dependent on the cleanliness of the air and on how
well the filter and the entire air handling system is
maintained.
Clean first the inlet side with a brush and then the
entire battery can be cleaned with compressed air,
water or steam. Use environmentally friendly
detergents which do not damage the coil.
Venting/ draining
(on WHS & WCS)
If the water coil is installed in a horizontal duct, it can
easily be drained through the drainage nipple at the
lowest point of the coil.
Frost protection
When there is risk for frost, provide the coil with
appropriate frost protection; add anti freeze to the
water, use a frost-sensor or drain the coil from water
trough the drainage nipple. Use compressed air to
facilitate the drainage.
The watercoil has an Rp ¼ nipple for mounting of an
immersion frost sensor, use this kind of frost sensor
in preference to a thermostats on the air-side. Make
sure that the immersion sensor is placed so it senses
the coldest water; this will be secured by connecting
the incoming water according to the labels on the
coil.
A frost damaged coil can cause water leakage from
the system and cause of this water damage.
GB