Grant Vortex VTXBH15/26 User Manual

9.5 PREPARE THE WALL
9.5.1 LOW LEVEL BALANCED FLUE
If the boiler is to be used with a low level balanced ue (Yellow
system) make the hole in the wall for the ue as shown in Figure
9-11.
Side wall
Rear wall
Note: This dimension is given with
the boiler pushed back against
the rear wall. Any clearances
must be added to it.
Hole to be
cut in wall
Boiler
centre line
Outline
of boiler
Rear exit
Side exit
C
C
A
A
B
Figure 9-11: Flue hole dimensions and position for low level
system
Table 9-6: Low level balanced ue hole cutting dimensions
Model
Dimension (mm)
A (dia.) B C
15-26 127 120 762
26-46 162 120 784
46-70 162 120 1,106
! NOTE !
Dimension A given in Table 9-6 includes an extra 10 mm
over the size of the terminal to provide clearance for tting.
! NOTE !
Dimension C given in Table 9-6 includes the depth of the
neoprene gasket on top of the heat exchanger when fully
compressed to 2mm.
Section 9: Flue System and Air Supply Page 33
9.5.2 HIGH LEVEL AND VERTICAL BALANCED
FLUE
If the boiler is to be used with the high level balanced ue (White
system) make the hole in the wall as shown in Figure 9-12.
Side wall
Rear wall
Note: This dimension is given with
the boiler pushed back against
the rear wall. Any clearances
must be added to it.
Hole to be
cut in wall
Hole to be
cut in wall
Boiler
centre line
Outline
of boiler
Rear exit
Side exit
Standard kit with no extensions
D
C
A
A
B
Figure 9-12: Flue hole dimensions and position for high level
system
Table 9-7: High level balanced ue hole cutting dimensions
Model
Dimension (mm)
A (dia.) B C D
15-26 175 120 1,227*
1,737 -
2,132**
26-46 200 120 1,279*
1,714 -
2,014**
46-70 200 120 1,601*
2,036 -
2,336
* Dimension C for starter section and elbow/terminal only
** Dimension D starter section, adjustable extension and elbow/terminal from
white system only
! NOTE !
Dimension A given in Table 9-7 includes an extra 10 mm
over the size of the terminal to provide clearance for tting.
! NOTE !
Dimensions C and D given in Table 9-7 include the depth
of the neoprene gasket on top of the heat exchanger when
fully compressed to 2mm.
Fitting instructions for the high level balanced ue and vertical
balanced ue are supplied with the ue kits.
Adjustable extensions
The adjustable extensions are telescopic.
The wall terminal section is adjustable and is suitable for a wall
thickness of 215 mm to 450 mm.
Simply adjust to the required length using a twisting motion. The
outer pipes must overlap by a minimum of 25 mm.

Grant Vortex VTXBH15/26 Specifications

General

Brand	Grant
Model	Vortex VTXBH15/26
Category	Boiler
Language	English