| (1) Venting of the unit is possible by unscrewing the screw of vent (position A - service valve (2), position B - service valve (1), position C - service valve (3)). Access to the service valve you can get by disassembling of plug by putting the allen key in a rubber cable. Venting of the medium heating by drainage plug (position A - service valve (1), position B - service valve (3), position C - service valve (1)). Access to the drainage plug is possible after disassembling of the plug. (2) In case of venting coil in the horizontal position motor up you have to pay attention to defend the unit from the water into casing; a coil should be vent by a special rubber tube assembly to the service ferrule; you it should not be disassembled. (3) In case of starting up the device after venting the heating medium you have to remember about venting the heating unit.
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air curtain
