Operating and installation instructions
M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units
- 52 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
V E N T I L A T I O N & H E A T R E C O V E R Y
16 Installing the three-step rotary switch with zero
position
This section describes how to connect the three-step rotary switch with zero position elec-
trically to the ventilation unit.
WARNING
The activities described in this chapter must only be carried out by technicians with the
following qualifications:
— Training in the installation and commissioning of electrical devices
— Training in electrical hazards and the local safety requirements
— Knowledge of the relevant standards and directives
— Knowledge and observance of this document and all the safety instructions (see
chapter “2 Safety instructions” from page 12)
NOTICE
— The ventilation unit may be damaged if the control cable is connected incorrectly.
This will also invalidate the warranty.
— Also follow the installation manual for the M-WRG-II ventilation units (see
section 1.12 on page 11).
— The installation must be carried out in accordance with the generally acknowledged
rules of technology.
16.1
Switching off power to the ventilation unit
DANGER
Potentially fatal voltages
— The electrical installation work must only be carried out by a qualified electrician.
— The VDE regulations or any special safety regulations applicable in your country
apply to the electrical installation work.
► Before starting installation or maintenance work, disconnect the mains cable for
connecting to the ventilation unit on all poles from the mains supply.
► Observe the five safety rules (DIN VDE 0105-100, EN 50110-1) for working on elec-
trical systems:
— Disconnect from mains (all-pole disconnection of a system from live parts)
— Secure against reconnection
— Check that the system is voltage-free
— Earth and short-circuit
— Cover or block off access to adjacent live parts