Operating Instructions and Installation Instructions

LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 36 edition 30.10.2007
6.6. Boiler control panel and casing assembly
Please refer to the separate assembly guide enclosed with the supply.
The boiler casing should only be assembled after the boiler has been hydraulically connected otherwise, there is a
risk of damage of the casing. However, the casing must be mounted prior to connecting the unit to the flue!
6.7. Connecting the burner and ARF-blower
6.7.1. Burner mating dimensions / orientation possibilities
Model
21 22-23 24-25 26 27-28 29 30 31 32
Furnace
Lenght FRL mm 1517 1623 1794 1889 2225 2559 2745 2985 3265
Diameter FR mm 516 549 614 640 675 712 750 811 870
Burner connection
Burner admittance diameter M mm 330
Burner tube lenght min
max (qN max) P mm
max (qN low NOx)
Maximum door load from burner
weight **
kg x m 140 160 180 200 220 250 280 320 360
Exhaust gas fan connection
(ARF)
Bore diameter (ARF) mm 100 140
Burner orientation
Max. swivel radius R mm
720 760 835 880 940 1000 1050 1145 1210
Distance boiler axle - pivot
D
1
mm
460 485 527 560 600 640 675 737 772
Distance door flange - pivot
D
2
mm
103 103 104 104 97 139 139 139 139
Door thickness
T mm 167 167 168 168 168 234 234 234 234
Door flange thickness F mm
* Burner tube lengths without consideration of an eventual intermediate flange
** Load as burner weight x distance burner centre of gravity - door. When necessary use a burner support.
24.09.07
265 280
120 160
400
6xM12, 15° vers.
330 365
195
400 490 540
230 380300
Lk mm
330
4xM12,15° vers.
Screw hole centre diameter
450
6xM16, 15° vers.
80
6035
mm
210
4xM16, 45° vers.
Screw hole diameter
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