10
7.5 Assembly instructions
Always have assembly, installation, repair and maintenance of smoke and heat extraction systems carried out by
qualified personnel trained for this purpose.
Rules to be adhered to for setting up and installation
The following safety relevant rules have to be adhered to when planning the use of a smoke and heat extraction system and its
set-up and installation:
• The Provincial Building Ordinance of the provinces,
• The regulations of the competent fire protection authority,
Accident prevention regulations
Adhere to the general accident prevention regulations (APR), the APR for power operated windows and doors, and the
installation rules in your country.
CAUTION:
Live components are directly accessible after opening the system housing.
Prior to inserting / removing cards disconnect to the panel from the mains supply and the back-up batteries.
• adhere to the installation instructions and your local energy providers
• select the place of installation such that free access is guaranteed for maintenance purposes
• select cables according to regulations in this instruction - take the calculation of the actuator supply cable lengths
into account when laying the cables
• power cables entered via the cable glands
• connect the cables in accordance with the drawings provided by the manufacturer
• route the cables in the building according to the regulations in this instruction
• after the smoke panel is installed the back-up batteries will be fully charged after ca. 8 hours
• check all system functions
Electric cable routing for smoke and heat extraction systems
Electrical cables always have to be laid in accordance with the national and local rules in your country.
Do not use the PE wire / green/yellow wire!
Cables of type NYM, concealed, can be used.
For surface laying, halogen free safety cables are recommended (see cable plan).
If possible, the use of cable types should be agreed with the Technical Services and the competent fire protection authority.
For the maximum permissible cable lengths of the actuator supply cables for the WSC 3xx system, taking the specified cable
cross sections into account (cable information for surface laying), please refer to chapter 8 “Cable dimensioning”.
8 Cable dimensioning
8.1 Maintaining the cable functions
According to valid national regulations.
The cable network for smoke ventilation systems (“Cable system“) ends normally at the interface (junction box) for the actuator!
The flexible, heat resistant connection cable of actuator is part of the system component‚ electric actuator actuation, and is not a
part of the electrical installation!
We recommend in all cases to discuss the type of cable routing with the competent fire fighting authorities.
8.2 Max. cable Length
Maximum permissible cable length from the smoke ventilation panel to the actuators and pyrotechnic gas generator taking into
account the cable cross-section is shown in the following tables for “± 24V standard actuators“, “MotorLink
®
actuators“ and
pyrotechnic gas generator.
8.2.1 Formula for the calculation of the maximum actuator cable length
Max. cable length = permissible voltage drop 2V (UL) x conductivity of copper(56) x cable cross section in mm
2
(a)
max. actuator current total in amps (I) x 2
For both ±24V standard actuators and actuators with MotorLink
®
the cross section of the cable must not be less than 0.75mm
2
regardless of the result of above formula.
Maximum actuator cable length: Always measured from the smoke to the last junction box
Permissible max. voltage drop in the line: 2 Volt
Actuating current: Sum of all actuator power consumption per motor line
Note: do not use the PE wire / green/yellow wire!
Example
Max actuator cable length with cable cross section 0.75mm
2
and actuator current 2A: (2 x 56x0.75) : (2 x 2) = 21m
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