9
excel HE -
Installation and Servicing
GENERAL
450 (17
1
/
2
")
331 (13")
119 (4
3
/
4
")
800
(31
1
/
2
")
320 (12
5
/
8
")
177 (7")
Flue
terminal
Gas Inlet
CH Return
Condensate
Drain
DHW Inlet
DHW Outlet
Pressure Relief Outlet
CH Flow
ix7378
10 (
3
/
8
")
470 (18
1
/
2
")
33
(1
3
/
8
")
35
(1
3
/
8
")
53
(2
1
/
8
")
65
(2
5
/
8
")
60
(2
1
/
2
")
25
10 (
3
/
8
")
35
(1
3
/
8
")
109
(4
1
/
4
")
200 (8") **
100 (4")*
from case
62
(2
1
/
2
")
of
water & gas
connections
C
L
of
condensate
drain
C
L
2
BOILER DIMENSIONS, SERVICES & CLEARANCES
all dimensions in mm (in)
The following minimum clearances must be maintained for
operation and servicing.
Additional space will be required for installation, depending
upon site conditions.
Side and Rear Flue
a.
Provided that the flue hole is cut accurately, e.g. with a core
drill, the flue can be installed from inside the building
where wall thicknesses do not exceed 600mm (24").
Front clearance
The minimum front clearance when built in to a
cupboard is 5mm (1/4") from the cupboard door but
450mm (17 3/4") overall clearance is still required,
with the cupboard door open, to allow for servicing.
*
Bottom clearance
Bottom clearance after installation can be reduced to 5mm.
However, 100mm must be available for servicing.
Where the space into which the boiler is going to be
installed is less than the length of flue required the flue
must be fitted from the outside.
Installation from inside ONLY
b.
If a core boring tool is to be used inside the building the
space in which the boiler is to be installed must be at least
wide enough to accommodate the tool.
SIDE FLUE ONLY **
Horizontal length of flue
Top clearance
from boiler to
required (MIN.)
outside wall
Dim. A
C24
C28
C32
0.5 m
0.5 m
0.5 m
200 mm
(7
7/8
")
1.0 m
1.0 m
1.0 m
200 mm
(7
7/8"
)
1.5 m
1.5 m
1.5 m
230 mm
(9")
2.0 m
2.0 m 1.725 m 250 mm
(9
13/16
")
2.5 m
2.5 m
N/A
260 mm
(10 1
/4
")
3.0 m 2.675 m
N/A
280 mm
(11")
REAR FLUE ONLY **
MIN. Top clearance required = 200 mm (8")
