Stulz Tel-Air-2 Series, Operating Instructions Manual

Page: 47 / 72

E/0618/35A/47
7.2 Hydraulic connections
Make sure the condensate drain pipes do not interfere with the air flow.
Connections are carried out by the installer.
h > 0 mm

Use PVC pipes with an internal diameter of 14 mm

Connect the pipes to the plastic union at the rear of the conditioner

Make sure there is a slope of at least 2% towards the drain outlet
7.3 Electrical Connections
It is absolutely necessary, before making any connections, to use a suitable tester
to check the supply voltage. This must be the same as the voltage indicated on the
technical data plate.
The user must furnish and install, upstream from the unit, an isolating switch with
pre-fuse and capacity as specified on the technical plate in order to be able to
perform maintenance on the unit in the absence of electricity.
The ON/OFF-key on the C2020 keypad (if present) is only used for the unit stand-by.
It must therefore not be considered as a safety element to perform maintenance on
the unit. Maintenance must be done after disconnecting the power supply of the
unit (see note above).
Electrical connections may only be performed by authorised technicians.
The system must be connected to an efficient earth circuit.
The conditioning system must be electrically connected in compliance with the regulations at
paragraph 1.2 and national regulations for technical systems.

Check the supply voltage and frequency.

Check that supply voltage and frequency are compatible with those for the unit

(shown in its name-plate).

Interrupt both main power and auxiliary power before working on the system.