58
3.
For the Electrician
3. For the Electrician
3.1 Electrical connections
Mains connection: 230 VAC, 50 Hz, 13 A slow-blow fuse, each boiler has its own mains connection
The boiler and related accessories are designed to be installed only in dry areas (protection type IP 20). Install-
ation of electrical components may only be performed by a qualified technician. The regulations and specifications
of ÖVE, VDI, SEV and local ordinances must be followed.
Attention!
– The phases of the 230 V electrical power supply must be connected correctly, otherwise the
blower might still be live even after the fuse has blown.
– The mains connection must be protected against short circuit with a 13 A delayed action fuse.
We recommend using fine-wire PVC sheathed cables, round cable Ø 6.5–8.3 mm e.g., H05VV-F (YMM-J) with a 3
x 1.5 mm2 nominal cross section.
Two separate cables are required for connecting the changeover unit (located in the pellet store).
– Cable for limit switch (extra-low voltage): min. 3 x 0.5 mm
2
(no ground), we recommend using a shielded cable
if the cable is longer than 5 m.
– Cable for changeover unit motor (low voltage): 4 x 1.5 mm
2
The boiler is pre-wired and internally fused with a T 6.3 A fine-wire fuse to protect against short circuit. As per
order, up to 3 MESplus modules (incl. boiler sensor) can be installed at the works into the control panel of the
wood gasification boiler and electrically connected. If there are more than 3 modules, they are installed in the
wall-mount casing (accessory: MES 004) and need to be electrically wired on-site.
Maximum MESplus module switching capacity: Relay outputs: 230 V AC, 6 A (2 A inductive), 50 Hz
WVF+ and B-PLM+ modules with X1/X2 contact: Solid-state relay: 230 V AC, 1 A
The electrical rating is dependent on the number of modules installed in the unit [that is, the number of actuators
powered (pumps, mixing valves, etc)].
In areas with increased power surge risk (e.g., lightning strikes in regions prone to storms), we recommend the
installation of an appropriate surge protector.
Information!
Electrical cables must not touch heating and exhaust pipes, nor come in contact with non-insulated
boiler components. They are to be sufficiently braced and provided with a protective tube.
Fig. 140 Control panel pellet boiler
3.1.1 Pelletboiler
Device fuse T 6,3 A
Service plug
Cover of safety thermostat
B7.1
Cover of safety thermostat
auger tube B8.1
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