Unigas LMV2 Series, Manual Of Installation - Use - Maintenance

Page: 11 / 112

PART I: SPECIFICATIONS
11
Fan installation
Connect the air duct to the burner by means of the bellows unit provided together with the burner (see the picture below).
Connection diagram of the air pressure switch to the burner air conduct
ATTENTION! The bellows unit provided is made of canvas and is provided with blocking spacers to avoid brea-
king it during installation: first place the bellows unit between flanges, then remove the spacers. Canvas has to
be stretched after the installation, but not stressed.
ATTENTION! the air duct dimensioning must be perforformed according to the flow rate, the temperature, the
distance between the fan and the burner and according to the fan features as well..
ATTENTION! It is suggested to install the fan on vibration-damping supports in order to reduce vibration propa-
gation.
A
B
C
D
E
P1
Iron sleeve Ø 10 mm
Male elbow fitting Ø 6 mm x 10
Copper tube Ø 6 mm x 1,5 mt
Nut for male elbow fitting Ø 6 mm x 10 mm
Burner air pressure switch
Air conduct
Copper tube connection Ø 6 mm:
- Drill the air duct (with hole from Ø 10 mm);
- Fit sleeve
A (Ø 10 mm) and weld it on channel E ;
- Assemble in sequence the B-D details on the tube (Ø 6 mm) C appropriately shaped up to the connection on the air pressure switch ( P1 ).
Picture refers to application with air pressure switch mounted on the junction box. Other applications are provided with air pressure
switch mounted on the air damper.