7.7 Electrical installation
Caution
Danger from electric current. The electrical installation is to be carried out
only by a qualified electrician.
Please note the following:
■
Observe all relevant regulations (e.g. EN 60204-1).
■
Choose the dimensions of the cable cross sections in line with the applicable
regulations.
■
Carry out the electrical installation according to the wiring diagram.
■
Route signal and bus lines separately from mains cables.
■
Make sure the lightning protection system for the units or for the entire building
is planned and carried out by professionals.
■
Provide overload protection equipment on site in the mains connection line of
the zone control panel.
■
Secure all connections against working loose.
Proceed as follows:
■
Connect the the connection box in the below-roof unit to the control block in the
roof unit:
–
Unscrew the fan protecting plate.
–
Pull out upwards the laced wiring harness from the connection module and
fasten it using a cable bushing and a cable clamp.
–
Connect the cable to the control block according to wiring diagram.
–
Screw the fan protecting plate tightly again. To do this, use the supplied M5 x
16 screws (total of 20 pieces).
■
Connect the power supply to the connection box.
■
Connect the zone bus to the connection box.
■
Connect the unit frame with the foundation earth electrode and attach an
earthing label.
■
Wire up the actuator Air-Injector, frost controller and supply air temperature
sensor to the connection box.
■
Wire up the mixing valves to the connection box.
■
The room air sensor and the fresh air temperature sensor are supplied loose in
the control panel:
–
Install the room air temperature sensor at a representative position in the
occupied area at a height of about 1.5 m. Its measured values must not
be distorted by the presence of sources of heat or cold (machines, direct
sunlight, windows, doors, etc.).
–
Install the fresh air temperature sensor at least 3 m above the ground on a
north-facing wall, so that it is protected from direct sunlight. Provide cover for
the sensor and thermally insulate it from the building.
Options:
■
Wire up the condensate pump to the connection box.
■
Wire up the return temperature sensor to the connection box.
■
For injection system: Wire up the pump and valve to the connection box.
■
For units with 2 Air-Injectors: Wire up the actuators of the vortex air distributors
to the connection box.
■
Version with 2 Air-Injectors or without Air-Injector: Install the enclosed supply air
temperature sensor in the supply air duct and wire it up to the connection box.
Plug connection to the control
block
Connections for lightning arresters
Cable duct
Connection box
Power supply
Zone bus
Frost controller
Actuator Air-Injector
Supply air sensor
Fig. 40: Electrical installation
RoofVent
®
RH | RC | RHC | R
Transport and installation
Art.No. 4 214 745-en-04 / Page 42
