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Carbon filter
The cartridge is secured with a bayonet fitting. When
replacing the filter, remove the cartridge by turning it out
of the frame.
In order to ensure a fault-free functioning of the filter
cartridge, an odour check following filtering should be
carried out. If necessary, the cartridge should be replaced.
Special filters
Special filters are serviced in accordance with the manu-
facturer's service instructions.
5.6 Water coils
Gerneral
In order to avoid freezing of the water coils, an air-side,
water-side or condensate-side frost protection should be
installed, dependent upon the model.
Do not use high-pressure water or high-pressure steam to
clean the coils. The lamella-fins can be damaged (excep-
tion is the steel-galvanised heat exchanger with reinforced
lamella-fins).
A still unavoidable amount of residual punch-oil, left over
from the production process, will be present during the
initial weeks of operation.
Clean the coil while installed or, if it cannot be accessed,
it can be removed for cleaning. Removed contaminants
must not be allowed to seep into surrounding component
parts. Contaminants and dirty water should be carefully
removed.
Use water only if the chamber or flooring can collect the
water and direct it away.
When cleaning copper or aluminium lamella-fins, com-
pressed air is used by carefully blowing against the direc-
tion of air flow.
The surface of the lamella-fin packets are cleaned with
a soft brush (not metal) or a vacuum cleaner. Hard or
pointed cleaning utensils may not be used.
The company reserves the right to make design changes without prior notice.
Commissioning
The on-site piping is to be carefully cleaned prior to con-
nection of the coil.
Check to ensure the proper connection of the supply/
return lines.
Give heed to counter current flow.
When the system is being filled, the coil is to be carefully
bled once it has reached the highest point of the system.
An improperly bled coil can form air pockets, which can
lead to a reduction in performance.
Check shut-offs and other fixtures for proper installation.
For filling, the following work is to be carried out:
• All shut-offs and regulating devices should be fully
opened.
• Open the prescribed bleeding devices, as long as auto-
matic bleeding devices are not provided.
• The system should be slowly filled from its lowest point.
• Gradually close the bleed valves at the various height
levels, as soon as air-free water is discharged.
• Switch on the primary/secondary pumps, check the
turning direction and operate the system for a longer
period of time.
• Drive the regulating valve to the converse position
(three-way valve).
• Follow up control by re-opening the bleed valve.
• Check system for leak-tightness.
Frost protection
Frost protection is assured by means of a frost protection
sensor, which must be adjusted depending upon the per-
centage of glycol in the media.
Percentage of
Setting value for
glycol
ethylene-glycol
20 %
30 %
40 %
The complete frost protection switching (e.g. mixing
valve, circulation pump, louver damper ventilator, heating
supply) is to be checked for function with available frost
protection thermostats.
If temperature close to the air handling unit can go below
5°C, the frost protection sensor must be built-in, or out-
side capillary frost protection must be insulated.
The warm water supply to the heat exchanger must be
assured even after switching off of the RAC equipment.
Damage, which is the result of frost impact, is not covered
as part of our warranty responsibility.
Removal from service
The coil must be completely emptied for longer periods
of standstill, especially with a freezing hazard. For this,
first remove the bleed air valve screw, then the drain plug.
Subsequently blow out each coil with compressed air for
a complete purging, as a residual amount of media can
remain in the heat exchanger following a free drainage.
EN.SILVER.110322
Setting value for
propylene-glycol
-11 °C
-7 °C
-18 °C
-12 °C
-25 °C
-19 °C
www.swegon.com
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