9
Fig. 9
If required, there is space for all piping to pass behind the boiler. Using
fig. 12 for reference, connect the gas and water pipes and the valves to
the base of the appliance using the tails provided. There is a
190 mm space between the valves and the wall to make these
connections.
Provision must be made to fill and recharge the system pressure. This
can be achieved using a filling loop or other methods approved by the
local water authority.
The pressure relief should terminate below the boiler over a tundish or
22 mm pipe (see
I fig 12) which should in turn discharge safely outside
the premises. Care should be taken that it does not terminate over an
entrance or window or where a discharge of heated water could
endanger occupants or passers by.
The system should be carefully checked for leaks, as frequent refilling
could cause premature system corrosion or unnecessary scaling of the
heat exchanger
Connecting the boiler to the system (fig. 11)
- Hinge down the electrical box to access to the valves connections.
Push in the tabs (
P Fig 14) on either side of the boiler and pivot the
box forward.
- Remove the yellow caps from connecting pipes and connect the
boiler to the taps using washers provided in the plastic bag
3 x fibre washers for the water pipes
1 x washer mesh filter “
F” CH return connection.
1 x rubber washer “
R” for gas connection.
Provision must be maid to reduce as much as possible the distance
A
from the cylinder coil return to the boiler and
B
should be greater than
200 mm to avoid gravity effects.(fig. 13)
Fitting the Horizontal Flue
The instructions for the vertical and biflux (twin pipe) flue options are
included with the relevant adapter kits.
The standard flue supplied with the appliance is suitable for lengths
from 300 mm minimum to 790 mm maximum. This means for rear
flueing, the standard kit will accommodate a maximum wall thickness
of 600 mm, and for side flueing a maximum wall thickness of 587 mm.
This takes into account the minimum appliance side clearances of 5 mm.
If the fixing is a rear exit flue, the template provides the position of the
centre for drilling the flue hole with a core drill.
If the flue is a side exit installation then calculate the position of the
hole with a slope of 5 mm / metre away from the boiler to the terminal.
The flue should fall slightly to the terminal.
7
A
A
A A
Fig. 10
R
F
bar
0
1
3
4
I
J
L
K
N
I
Safety valve outlet
∅
15 mm
J
Heating flow
∅
22 mm
K
H.W. flow
∅
22 mm
L
Gas supply
∅
22 mm
N
Heating return
∅
22 mm
Fig. 11
Fig. 12
Fig 13
B
200 mm mini
heating return
coil return
A
Installing the Boiler
(continued)
Summary of Contents for Britony System II Plus 80 Nat
Page 15: ...15 Notes...
