VTS Medical Systems VENTUS COMPACT VVS021c Instructions For Use Manual page 29

!
See instructions at www.vtsgroup.com
! Installation, Operation and Maintenance Manual - Electric Heater supply and control
system/ Electric heater supply and control system Technical and operating
documentation,
! Operation and Maintenance manual - Electric Heaters - Power Slices / Electric Heaters -
Slices Technical and Operational Documentation.
The electric heater is an optional accessory and consists of heating elements (heaters), connection
terminal, control Control (SCCR) and over-temperature protection.
The heaters are Cr-Ni-Fe heating wires of 6kW/400V. They are connected in heating slices (heating
sections). The heater can consist of: 1, 2 or 3 heating slices.
Electric heaters can be supplied in two power variants - low power, which is suited to AHUs with
relatively low heating requirements, and high power, which includes AHU cases for facilities with higher
heat requirements. These types differ primarily in the types of electrical connection of the individual
heaters in the heater unit (star connection for low power or delta connection for high power).
The appropriate connection of the heaters to each other is made at the heater manufacturing stage -
the installer is only required to connect the power and control wires - no modifications to the heater
system connections from the factory configuration are allowed.
MODULATING THE SUPPLY VOLTAGE DEPENDING ON THE HEATING POWER DEMAND
(FIRST HEATING SLICE).
The first slice is controlled steplessly 0-10V, each remaining slice (ON/OFF) ON-OFF.
Each time a regulated slice reaches full output, the demand is passed on to the next slice, which
starts operating at full capacity. Any additional heating power will be realised by steplessly
increasing the regulated heating power of the modulating slice.
DETAILS OF THE ELECTRICAL INSTALLATION
Type of network
Rated supply voltage
Rated insulation voltage
Rated withstand surge voltage
www.vtsgroup.com
:
OIMM VENTUS COMPACT - ver. 6.0.0 (06.2024)
TN
3x400V AC
400V
2500V
29