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4.5 Burner mounting
Burner will typically be installed through an oven wall or insulated air
duct. Cut opening at least 25 mm larger in diameter than discharge
sleeve to allow for sleeve expansion.
Additional burner support may be required in conjunction with a
stiffener plate to support burner package weight (20–25 kg). Four
13 mm diameter holes into panels flange accept 10 mm stud bolts
welded to panels or stiffener.
A
B
CAUtIon
Seal welding of burner flange to stiffener plate at (A) may cause
warpage of burner flange and require additional seal material to
prevent leakage.
➔ For push-through systems, area A should be sealed with additional
gasketing or high temperature packing, to prevent back flow of
high temperature air.
1 Fill area B with no more than 50 mm of high temperature packing
(too little will overheat mounting, too much will overheat sleeve).
➔ For pull-through systems, spacers may be installed on stud bolts
and area B left empty to permit cooling air past the sleeve.
➔ Four lock screws permit centering mixing cone within burner
body and sleeve.
2 They should be drawn up handtight, then backed out 180° to
allow for cone expansion.
3 They must be rechecked after start-up and loosened if necessary
to prevent deformation of cone, see page 4 (7.1 To start-up
a VALUPAK-II burner for the first time). instruction for details.
Tightening can lead to cone distortion and greatly reduced cone
and discharge sleeve life.
➔ Discharge sleeve must be flush with, or extended beyond interior
wall.
4 A viewing port should be provided for flame observation in such
a position that burner flame can be fully seen.
4.6 Flame rod or UV scanner arrangement with spark ignitor
4.6.1 spark ignitor orientation
The spark igniter can be mounted in 4 different positions on the
burner housing (seen from the back of the burner): left (standard
position), right, up (blower side) and bottom (if the air inlet is on top).
VP-II-60 has only 3 different positions. There's no up connection (to
the blower side), only left, right and bottom/down.
All spark ignitor arrangements = 1/2" NPT connection.
L
R
VP-II-60–900
Legend:
L: Left (standard position)
R: Right
U: Up = blower side (not VP-II-60)
D: Down = opposite of the blower
Lock screws
L
U
D
4.6.2 spark ignitor arrangement
Spark ignitor 1/2" NPT
Burner
VP-II-60
VP-II-150
VP-II-300
VP-II-600
VP-II-900
4.6.3 spark ignitor replacement
1 First loosen the ignitor from the 1/2" bushing.
2 Turn the 1/2" bushing in the main housing.
3 Put the ignitor thru the bushing.
4 Put the ignitor thru the ignitor hole in the mixing cone until the
mechanical stop (see detail X).
5 Tighten the ignitor in the 1/2" bushing.
4.6.4 Flame rod arrangement
A
Burner
VP-II-60
VP-II-150
VP-II-300
VP-II-600
VP-II-900
➔ The flame rod is located at the back of the burner, through the
scanner tube.
➔ It is important that the flame rod is mounted gastight!
➔ The recommended adjusting dimension shall be respected.
5 stARt
1 Make sure trip release shut-off valve and main gas cock are all
closed.
2 Make sure the burner firing rate control handle is at predetermined
low fire "LO" position.
3 Start all circulating and exhaust fans.
4 Energize system control panel (if applicable).
5 Start burner blower motor.
6 Open main gas cock.
7 Press start button.
8 Main gas valve will open (only if all safety circuits are complete).
6 stoP
1 Push STOP button.
2 Main gas valve should automatically close.
3 De-energize system control panel and burner blower motor.
4 Close main gas cock.
7 CoMMIssIonInG
CAUtIon
Incorrect start up and ajustment!
EN-3
Detail X
X
Z
Z
44
15
33
27
14
B
C
A
B
C
152
70
235
200
60
235
200
25
235
324
15
235
432
20
356
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