15
1.
Electrical installation
1.1
Security instructions for the electrical installation
- All work concerned with the electrical installation must only be performed by
qualified technical personnel (e.g. electricians or technicians with equivalent
training). The customer is responsible for ensuring their suitability.
- Please observe the local regulations concerning the provision of electrical
installations.
- Electronic components are highly sensitive to electrostatic discharges. These
components must be protected by measures in all installation work to prevent
damage by electrostatic discharge (ESD protection).
1.2
Survey of electrical installation
The following diagrams provide a survey of the electrical installations for the two
types of unit “ST” and “IT” to be provided by the customer. Accessories available
for the electrical installation are indicated:
Block diagram for “ST” type series
1
2
Mk4
P/I
7
10
11
9
8
3
5
4
6
1
Control unit power supply
2
Power unit power supply
3
Step control board (option “Z243”)
4
Remote operating and fault indication (option “Z242”)
5
External controller
6
External set-point adjuster
7
Maximum humidistat (external security chain)
8
Duct sensor inlet air
9
Room sensor
10
Humidistat 3-stage (Option “HDU 3”)
11
Duct sensor outlet air
Summary of Contents for Mk4 IT 10 Series
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