Sime Planet Dewy 60 BFR Manuel De Montage, D'utilisation Et D'entretien page 34

Single modules are calibrated in heating position.
ENG
"∆p air" ADJUSTMENT
FR
To measure "∆p air" simply con-
nect the differential pressure
gauge, equipped with a decimal
scale in mmH O or "W.C., to the
2
positive and negative sockets on
the air pressure switch (Drawing
1) .
Operating sequence:
1) Rotate the module heating
power adjustment trimmer
clockwise to the limit (B -
Drawing 2) ; fan on maximum.
2) Find the "max ∆p air" values in
the table, using the fan board
"MAX" trimmer (Drawing 3) :
Max. ∆p air (mm H
Single module
Natural gas
L.P. gas
Max. ∆p air ("W.C.)
Single module
Natural gas
L.P. gas
3) Rotate the module heating
power adjustment trimmer
counter-clockwise to the limit
(B - Drawing 2) ; fan on mini-
mum.
4) Find the "min ∆p air" values in
the table, using the fan board
"MIN" trimmer (Drawing 3) :
Min. ∆p air (mm H
Single module
Natural gas
L.P. gas
Min. ∆p air ("W.C.)
Single module
Natural gas
L.P. gas
34
Air pressure switch
Pressostato aria
O)
2
61. 1 kW
53.0 ±2
47.0 ±2
61. 1 kW
2.09 ±0.08
1.85 ±0.08
O)
2
61. 1 kW
8.4 ±0,2
7.5 ±0,2
61. 1 kW
0.33 ±0.008
0.30 ±0.008
"∆p air-gas" ADJUSTMENT
To measure "∆p air-gas" simply
connect the positive socket on
the differential pressure gauge to
the downstream pressure fixture
and the negative socket to the air
pressure switch (Drawing 4) .
Gas pressure is always adjusted
with the fan on minimum.
Drawing 1
Operating sequence:
Drawing 2
B
1) Rotate the module heating
power adjustment trimmer
counter-clockwise to the limit
(B - Drawing 5) ; fan on mini-
mum.
2) Completely unscrew the valve
gas shutter (1- Drawing 6) .
3) Use the gas valve OFF-SET adjustment screw (2 - Drawing 6) and
find the "∆p aria-gas" value in the table:
Shutter open (61. 1 kW)
"∆p air"
min/max Single module
adjustment
Natural gas
L.P. gas
4) Use the shutter (1- Drawing 6) and find the "∆p air-gas" value in the
table:
Adjusted shutter (61. 1 kW)
Single module
Drawing 3
Natural gas
L.P. gas
Air pressure switch
Pressostato aria
6 6 1 1 . . 1 1 k k W W
60 kW
Drawing 4
B Drawing 5
1
2
6 6 1 1 . . 1 1 k k W W
60 kW
Drawing 6
mm H O "W.C.
2
5.2 ±0. 1 0.205 ±0.004
7.7 ±0. 1 0.303 ±0.004
mm H O "W.C.
2
3.7 ±0. 1 0. 1 46 ±0.004
7.3 ±0. 1 0.287 ±0.004