Construction; Dimensions; Accessories; Wiring - BRAHMA EUROGAS Series Quick Start Manual

Power consumption, at starting up:
Power consumption, running:
Contact rating:
-Thermostat:
-EV1:
-EV2:
-Burner motor:
-Alarm:
-Ignition transformer:
Fuse rating internal:
Fuse rating external:
Flame control:
The ionization flame detecting device makes use of the
rectification property of the flame.
The ionization flame detecting device is not a safe-to-touch
output (no provision with protective impedance).
- Minimum ionization current:
on request:
- Recommended ionization current:
≥10 times the minimum ionization current
- Minimum insulation resistance of cable and detection
electrode to earth:
- Max. parasitic capacitance of detection electrode:
- Max. short circuit current:
Weight including socket:

CONSTRUCTION

A special building technique and the surface mounting
technology for the electronic components have allowed to
realize a box structure and to maintain the dimensions of
the previous mechanical controls unchanged.
The enclosure protects the control from mechanical
damage, dust and dirt from the conditions of installation.
A varistor protects the control from voltage transients on
the mains supply.
A fuse protects the internal relay of the control box in case
of short circuits on the outputs (gas valves, motor,
transformer and lock-out signal). This is not an accessible
fuse and the control must be protected with a fuse of the
fast blow type suitable to the loads connected and never
exceeding 5A.
OVERALL DIMENSIONS
Fig. 1 shows the control overall dimensions.
2/4
VM41 VM42
12 VA 15VA
9 VA 12VA
I max
6 A cosϕ > 0.4
0.5 A cosϕ > 0.4
0.5 A cosϕ > 0.4
3 A cosϕ > 0.4
1 A cosϕ = 1
2 A cosϕ > 0.4
6.3 A T
5 A F
1.2µA
0.5µA
≥50MΩ
≤1nF
< 200µA AC
250g
Fig.1

ACCESSORIES

The controls are supplied with inbuilt reset button; the
enclosures are arranged for the fitting of strain relieves
and/or cable holders on the sides (see fig.2).

WIRING

The lenght of the cables of external components should not
be longer than 1 m.
For the wiring of the controls you can use connecting
sockets of our production.
Socket N is suitable for the VM41 control, socket NE is
suitable for the VM42 control.
Fig.3 shows these accessories and all relevant dimensions,
useful for the installation.
Fig.2
Socket N
Socket NE
Socket N
Socket NE
Fig.3
4007_r00