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3.
For the Electrician
3. For the Electrician
3.1
Elektrische Anschlüsse
Mains connection: 230 VAC, 50 Hz, fuse 13 A slow-blow
The boiler and related accessories are designed to be installed only in dry areas (protection type IP 20). Installa-
tion 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 blo-
wer 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 crosssection.
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 earth), 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. By special
order, up to 3 MESplus modules (including boiler sensor) will be installed in the control panel and wired at the
factory – Fig. 85. 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 upon the number of modules installed in the unit, that is, the number of actua-
tors powered (pumps, mixing valves, etc.).
In areas with increased power surge risk (e.g., lightning strikes in regions prone to storms), we recommend ins-
tallation of an appropriate surge protector.
Fig. 85 Control panel BioWIN 2 102–262
Fuse T 6.3 A
MESplus module
Information!
Electrical cables must not touch heating and exhaust pipes, nor must they come in contact with no-
ninsulated boiler components. They are to be sufficiently braced and provided with a protective tube.