22
All electrical connections are located in the control panel. The control panel at the front contains the LogWIN
main board while the control panel at the rear contains the connection terminals (screwless spring-type termi-
nals) for connecting the MES control.
– The phases of the 230 V electrical power supply must be connected correctly, otherwise the blower
might still be live even after the mains fuse has blown.
– The mains connection must be protected against short circuit with a 13 A delayed-action fuse.
– On site, the technician must install an all-pole disconnection with at least 3 mm contact gap at the
mains access point. Current-operated r.c.d. protection switches are considered all-pole disconnec-
tions (ÖVE regulation).
Fig. 41
Control panel
Fuse F1
T 6.3 A
Control panel
MES module
For the Electrician
3.1 Electrical connections
The boiler and related accessories are designed to be installed only in dry areas (protection type IP 10).
Installation of electrical components may only be performed by a qualified technician. The regulations and spec-
ifications of ÖVE, VDE, SEV and local ordinances must be followed.
We recommend using fine-wire PVC sheathed cables, e.g., H05VV-F (YMM-J) with a 3 x 1.5 mm
2
nominal cross-
section.
The boiler is pre-wired and internally fused with a T 6.3 A fine-wire fuse to protect against short circuit – Fig.
41. By special order, the MES modules (including boiler sensor) will be installed and wired at the factory:
Maximum MES module switching capacity:
Relay outputs: 230 V AC, 6 A (2 A inductive), 50 Hz
WVF and solar modules with X1/X2 contact:
Solid-state relay: 230 V AC, 1 A
The electrical rating is dependent upon the number of modules installed in the unit, that is, the number of actu-
ators powered (pumps, mixing valves, etc.).
In areas with increased power surge risk (e.g., lightning strikes in regions prone to storms), we recommend
installation of an appropriate surge protector.
Electrical cables must not touch heating and exhaust pipes, nor must they come in contact with non-
insulated boiler components. They are to be sufficiently braced and provided with a protective tube.
Cladding door switch
Fuse F2
T 2.0 A
Service plug
