6
2.7 Electrical
connection
Electrical connections must be carried out in compliance with current general regional and local
regulations. Cables should not run, or be installed, in the vicinity of inspections doors, panel con-
nections and fastener profiles. To avoid damage, the electrical connection diagram in the branch-
ing box
must
be followed.
Earth connections already installed in the air handling unit must be removed. The air ducts from
the air handling unit to the appliance must be properly earthed.
2.8 Gas
connection
The air handling units can be equipped with a gas-fired heat source The gas connection between
the gas-fired heat source and the gas network must be carried out in accordance with regional
and local regulations. For further details, please see the installation and operating instructions sup-
plied for the relevant gas-fired heat source. When installing the gas connection, make sure that in-
spection doors, panel connections and fastener profiles are not blocked. The pipes must never be
installed in the air flow of the Mark Klimat.
3.0 Start-up/shutdown
3.1 General
Appliances must be installed and started up by skilled personnel. It is important to be familiar be-
forehand with the installation, operating and maintenance instructions supplied as well as the
maintenance instructions for air handling units and any peripherals. Disregarding these instructions
could result in danger to the personnel carrying out the work, and damage the appliance. Do not
forget to instruct the user on the correct use and operation of the appliance and peripherals. The
appliance is suitable for the purpose for which it was designed and safe to operate only when fully
installed (building, water, air, electrics, condensation etc.).
3.2 Control
activities
Check that all screw fittings have been sufficiently tightened.
Make sure that the air handling unit cannot be loaded in excess of the design parameters. Note in
particular;
– The fan’s maximum speed.
– The fan motor’s maximum current consumption.
– The maximum temperature inside the appliance < 60 ºC.
Checks prior to starting up the appliance for the first time.
– Has the appliance been cleaned internally?
– Have all tools been removed from the appliance?
– Has all the transport protection been removed?
– Can the shock absorbers under the fan frame move freely?
– Are the V-pulleys correctly aligned?
– Do the V-belts have the correct tension?
– Have any siphons been filled with water?
– Are the siphons protected from freezing?
– Have the heat exchanger(s)/gas feed pipes been bled?
– Have all the air ducts been installed?
– Are all the components in the duct system for the correct system pressure measurement?
– Are the motors connected according to the electrical diagram, and at the correct tension?
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