17
SILVER M
INSTALLATION
– OPERATING - MAINTENANCE
Activated 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 manufacturer's
service instructions.
5.6.
Heat exchanger
General
In order to avoid freezing of the heat exchanger, an air-side, water-
side or condensate-side frost protection should be installed,
dependent upon the model.
In order to achieve an optimal temperature stratification
and/or to prevent potential freezing of units with multiple
heat exchangers, use of the piping in the Tichelmann
system is recommended. If this is not feasible, the hydraulic
compensation must take place with a regulating/shut-off valve.
The compensation must be carried out on site by the system
operator.
Do not use high-pressure water or high-pressure steam to clean the
heat exchanger. The lamella-fins can be damaged (exception is the
steel-galvanised heat exchanger with reinforced lamella-fins).
A still unavoidable amount of residual Stanzoil, left over from the
production process, will be present during the initial weeks of
operation.
Clean the heat exchanger 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, compressed air is
used by carefully blowing against the direction of air flow.
The surface of the lamella-fin packets are cleaned with a brush (not
metal) or a vacuum cleaner. Hard or pointed cleaning utensils may
not be used.
Commissioning
The on-site piping is to be carefully cleaned prior to connection of
the heat exchanger.
Check to ensure the proper connection of the feed/return lines.
Give heed to counter current flow.
When the system is being filled, the heat exchanger is to be
carefully bled once it has reached the highest point of the system.
An improperly bled heat exchanger 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 automatic
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 and 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
