13
Checking the nozzle pressure
A
Top test nipple: "P.IN" (input), static
and supply pressure
B
Plug with connecting cable
C
Hexagon screw (full load adjust-
ment)
D
Phillips screw (partial load adjust-
ment)
E
2 plugs
a:Ö
(modulation coil)
F
Bottom test nipple: "P.OUT" (out-
put)
G
Nozzle cap
H
Gas nozzle
K
Gas manifold
Disabling the l.h. gas train (BV1)
1.
Close the gas shut-off valve.
2.
Seal at least the r.h. half of the gas
nozzles
H
with nozzle caps
G
sup-
plied.
3.
Open the screw at bottom test nipple
F
of the
l.h.
gas train (BV1) by one
full turn.
4.
Connect the pressure gauge at bot-
tom test nipple
F
of the
l.h.
gas train
(BV1) to check the nozzle pressure.
5.
Disconnect plug
B
from the
r.h.
gas
train (BV2).
6.
Open the gas shut-off valve.
Start the boiler.
7.
Enable the emissions test function
"
S
" (
full load
):
Operating instructions
8.
Counterhold Phillips screw
D
.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 704 GB